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1539 Commits

Author SHA1 Message Date
Chris Lattner
5f55aaf0f0 Remove obsolete comment. Unreachable blocks will automatically be left at the 
end of the function.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11313 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-11 05:20:50 +00:00
Chris Lattner
206805e172 Add an _embarassingly simple_ implementation of basic block layout. This is 
more of a testcase for profiling information than anything that should reasonably
be used, but it's a starting point.  When I have more time I will whip this into
better shape.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11311 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-11 04:53:20 +00:00
Chris Lattner
723c66d4c0 Implement SimplifyCFG/PhiEliminate.ll 
Having a proper 'select' instruction would allow the elimination of a lot
of the special case cruft in this patch, but we don't have one yet.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11307 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-11 03:36:04 +00:00
Chris Lattner
2355f948c5 The hasConstantReferences predicate always returns false. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11301 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-11 01:17:07 +00:00
Chris Lattner
81d1a2207d initialization calls now return argc. If the program uses the argc value 
passed into main, make sure they use the return value of the init call
instead of the one passed in.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11262 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-10 17:41:01 +00:00
Chris Lattner
f1d0d3519f Only add the global variable with the abort message if an unwind actually 
occurs in the program.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11249 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-09 22:48:47 +00:00
Chris Lattner
68b86f4f41 Don't depend on auto data conversion 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11229 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-09 05:16:30 +00:00
Chris Lattner
d21cd809b6 Adjust to the changed StructType interface. In particular, getElementTypes() is gone. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11228 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-09 04:37:31 +00:00
Chris Lattner
d5d8996720 Start using the new and improve interface to FunctionType arguments 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11224 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-09 04:14:01 +00:00
Chris Lattner
99d6b8ec95 The ConstantExpr::getCast call can cause a CPR to be generated. If so, 
strip it off.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11213 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-09 00:20:55 +00:00
Misha Brukman
b9806e0101 Fix grammar-o. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11210 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-08 22:27:33 +00:00
Chris Lattner
501825e08a Improve compatibility with programs that already have a prototype for 'write', 
even if it is wierd in some way.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11207 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-08 22:14:44 +00:00
Chris Lattner
aeb2a1d708 rename the "exceptional" destination of an invoke instruction to the 'unwind' dest 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11202 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-08 21:44:31 +00:00
Chris Lattner
e0def04e43 Fix PR225: [pruneeh] -pruneeh pass removes invoke instructions it shouldn't 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11200 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-08 21:15:59 +00:00
Chris Lattner
edb1cf0c19 splitBasicBlock "does the right thing" now, no reason to reposition it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11199 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-08 20:49:07 +00:00
Chris Lattner
6d78457f17 Implement proper invoke/unwind lowering. 
This fixed PR16 "[lowerinvoke] The -lowerinvoke pass does not insert calls to setjmp/longjmp"


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11195 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-08 19:53:56 +00:00
Chris Lattner
e1c09309f2 Add a call to 'write' right before the call to abort() in the unwind path. 
This causes the JIT, or LLC'd program to print out a nice message, explaining
WHY the program aborted.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11184 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-08 07:30:29 +00:00
Chris Lattner
99dcc1da86 Fix another dominator update bug. These bugs keep getting exposed because GCSE 
keeps finding more code motion opportunities now that the dominators are correct!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11142 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-05 23:20:59 +00:00
Chris Lattner
3e0b870def Fix bug updating dominators 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11140 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-05 22:33:26 +00:00
Chris Lattner
79fc865ccb Add debug output 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11139 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-05 22:33:19 +00:00
Chris Lattner
4f02fc28eb Fix PR223: Loopsimplify incorrectly updates dominator information 
The problem is that the dominator update code didn't "realize" that it's
possible for the newly inserted basic block to dominate anything.  Because
it IS possible, stuff was getting updated wrong.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11137 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-05 21:12:24 +00:00
Chris Lattner
a33ceaa2d4 Minor speedup, don't query ValueMap each time through the loop 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11123 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-04 21:44:26 +00:00
Chris Lattner
c1df7e1799 Two changes: 
1. Don't scan to the end of alloca instructions in the caller function to
     insert inlined allocas, just insert at the top.  This saves a lot of
     time inlining into functions with a lot of allocas.
  2. Use splice to move the alloca instructions over, instead of remove/insert.
     This allows us to transfer a block at a time, and eliminates a bunch of
     silly symbol table manipulations.

This speeds up the inliner on the testcase in PR209 from 1.73s -> 1.04s (67%)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11118 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-04 21:33:42 +00:00
Chris Lattner
44a6807f4f Optimize the case where we are inlining a function that contains only one basic block, 
and that basic block ends with a return instruction.  In this case, we can just splice
the cloned "body" of the function directly into the source basic block, avoiding a lot
of rearrangement and splitBasicBlock's linear scan over the split block.  This speeds up
the inliner on the testcase in PR209 from 2.3s to 1.7s, a 35% reduction.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11116 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-04 04:17:06 +00:00
Chris Lattner
c24a076c6a Adjust to the new BasicBlock ctor, which requires a function parameter 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11114 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-04 03:58:28 +00:00
Chris Lattner
3b332fd376 Remove unneeded code now that splitBasicBlock does the "right thing" 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11111 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-04 03:21:51 +00:00
Chris Lattner
5e923dee60 More refactoring. Move alloca instructions and handle invoke instructions 
before we delete the original call site, allowing slight simplifications of
code, but nothing exciting.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11109 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-04 02:51:48 +00:00
Chris Lattner
5052c911ec Move the cloning of the function body much earlier in the inlinefunction 
process.  The only optimization we did so far is to avoid creating a
PHI node, then immediately destroying it in the common case where the
callee has one return statement.  Instead, we just don't create the return
value.  This has no noticable performance impact, but paves the way for
future improvements.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11108 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-04 01:41:09 +00:00
Chris Lattner
23b4c68f46 Give CloneBasicBlock an optional function argument to specify which function 
to add the cloned block to.  This allows the block to be added to the function
immediately, and all of the instructions to be immediately added to the function
symbol table, which speeds up the inliner from 3.7 -> 3.38s on the PR209.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11107 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-04 01:19:43 +00:00
Chris Lattner
e47f78ed12 Bunch up all locally used allocas by the block they are allocated in, and 
process them all as a group.  This speeds up SRoA/mem2reg from 28.46s to
0.62s on the testcase from PR209.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11100 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-03 22:34:12 +00:00
Chris Lattner
7fecc2e5e2 Handle extremely trivial cases extremely efficiently. This speeds up 
SRoA/mem2reg from 41.2s to 27.5s on the testcase in PR209.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11099 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-03 22:00:33 +00:00
Chris Lattner
0517e72096 Disable (x - (y - z)) => (x + (z - y)) optimization for floating point. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11083 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-02 20:09:56 +00:00
Chris Lattner
529429224c Update comment 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11082 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-02 20:09:22 +00:00
Brian Gaeke
09ca4115ee Make deadarghaX0r warning louder. 
(I just love typing haX0r.   haX0r haX0r haX0r.)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11079 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-02 19:32:27 +00:00
Chris Lattner
c23396e8de Disable tail duplication in any "hard" cases, where it might break SSA form. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11052 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-01 06:32:28 +00:00
Chris Lattner
e400a0976f Fix the count of the number of instructions removed 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11049 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-01 05:15:07 +00:00
Misha Brukman
7c791ed0a4 Hyphenate `target-dependent' 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11003 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-01-28 20:43:01 +00:00
Chris Lattner
f78616b339 Fix InstCombine/2004-01-13-InstCombineInvokePHI.ll, which also fixes lots 
of C++ programs in Shootout-C++, including lists1 and moments, etc


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10845 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-01-14 06:06:08 +00:00
Chris Lattner
7822c2ae07 Clean up #includes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10799 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-01-12 19:56:36 +00:00
Chris Lattner
76f7fe25d9 Fix bug in previous checkin 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10798 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-01-12 19:47:05 +00:00
Chris Lattner
7c4049c5a0 Eliminate use of ConstantHandling and ConstantExpr::getShift interfaces 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10796 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-01-12 19:35:11 +00:00
Chris Lattner
b6ac8bc586 Add header file I accidentally removed in teh shuffle 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10795 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-01-12 19:15:20 +00:00
Chris Lattner
5585b335e5 Remove use of the ConstantHandling interfaces 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10793 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-01-12 19:12:50 +00:00
Chris Lattner
c6646ebdb9 Remove use of ConstantExpr::getShift 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10792 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-01-12 19:10:58 +00:00
Chris Lattner
b16689b647 Don't use ConstantExpr::getShift anymore 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10791 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-01-12 19:08:43 +00:00
Chris Lattner
81ebc30089 Remove use of ConstantHandling 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10789 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-01-12 18:35:03 +00:00
Chris Lattner
e5d4f1b9e7 Remove unneeded #include 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10788 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-01-12 18:33:54 +00:00
Chris Lattner
8f90b005d6 Move llvm::ConstantFoldInstruction from VMCore to here, next to ConstantFoldTerminator 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10785 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-01-12 18:25:22 +00:00
Chris Lattner
ccd3a878d0 Remove uses of ConstantHandling itf 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10783 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-01-12 18:12:44 +00:00
Chris Lattner
b7a5d3edee Use constantexprs for casts. Eliminate use of the ConstantHandling interfaces 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10779 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-01-12 17:43:40 +00:00
Chris Lattner
84831642e4 Fix fairly severe bug in my last checking where we treated all unfoldable 
constants as being "true" when evaluating branches.  This was introduced
because we now create constantexprs for the constants instead of failing the
fold.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10778 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-01-12 17:40:36 +00:00
Chris Lattner
c6a4d6a066 * Implement minor performance optimization for the getelementptr case 
* Implement SCCP of load instructions, implementing Transforms/SCCP/loadtest.ll
  This allows us to fold expressions like "foo"[2], even if the pointer is only
  a conditional constant.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10767 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-01-12 04:29:41 +00:00
Chris Lattner
5f16a13896 Do not hack on volatile loads. I'm not sure what the point of a volatile load 
from constant memory is, but lets not take chances.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10765 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-01-12 04:13:56 +00:00
Chris Lattner
1daee8b010 Implement SCCP/phitest.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10763 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-01-12 03:57:30 +00:00
Chris Lattner
2d11f167e6 Implement Transforms/ScalarRepl/phinodepromote.ll, which is an important 
case that the C/C++ front-end generates.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10761 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-01-12 01:18:32 +00:00
Chris Lattner
2cacc0a306 Update obsolete comments 
Fix iterator invalidation problems which was causing -mstrip to miss some
entries, and read free'd memory.  This shrinks the symbol table of 254.gap
from 333 to 284 bytes!  :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10751 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-01-10 21:36:49 +00:00
Chris Lattner
f7703df496 Finegrainify namespacification 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10727 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-01-09 06:12:26 +00:00
Chris Lattner
21949d9088 Remove dependence on structure index type. s/MT/FT 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10726 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-01-09 06:02:51 +00:00
Chris Lattner
d745602662 Finegrainify namespacification 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10725 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-01-09 06:02:20 +00:00
Chris Lattner
559d519549 Finegrainify namespacification 
add flags for PR82


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10724 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-01-09 05:53:38 +00:00
Chris Lattner
63a917bbc2 Inching towards fixing PR82 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10722 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-01-09 05:44:50 +00:00
Chris Lattner
329c1c6c94 Improve encapsulation in the Loop and LoopInfo classes by eliminating the 
getSubLoops/getTopLevelLoops methods, replacing them with iterator-based
accessors.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10714 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-01-08 00:09:44 +00:00
Chris Lattner
0898c78a52 Merging constants can cause further room for improvement. Iterate until 
we converge


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10618 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-28 07:19:08 +00:00
Chris Lattner
9a0a41f224 rename ClassifyExpression -> ClassifyExpr 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10592 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-23 08:04:08 +00:00
Chris Lattner
15cad759fe More minor non-functional changes. This now computes the exit condition, though 
it doesn't do anything with it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10590 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-23 07:47:09 +00:00
Chris Lattner
e799902fbb Remove extraneous #include 
finegrainify namespacification


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10589 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-23 07:43:38 +00:00
Chris Lattner
b97238079d Fix memory corruption bug PR193 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10586 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-22 23:49:36 +00:00
Chris Lattner
500597a1c3 Don't mind me, I'm just refactoring away. This patch makes room for LFTR, but 
contains no functionality changes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10583 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-22 09:53:29 +00:00
Chris Lattner
18b3c97bc7 Implement IndVarsSimplify/pointer-indvars.ll, transforming pointer 
arithmetic into "array subscripts"


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10580 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-22 05:02:01 +00:00
Chris Lattner
3324e718bc Fix PR194 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10573 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-22 03:58:44 +00:00
Chris Lattner
bd1a90ecc7 Fix ADCE/2003-12-19-MergeReturn.llx 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10539 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-19 09:08:34 +00:00
Chris Lattner
a3df8a964a Remove the wierd "Operands" loop, by traversing basicblocks in reverse order 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10536 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-19 08:18:16 +00:00
Chris Lattner
e4365b2e8c Implement LICM/sink_multiple.ll, by sinking all possible instructions in the 
loop before hoisting any.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10534 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-19 07:22:45 +00:00
Chris Lattner
0f98e75adf Generalize a special case to fix PR187 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10531 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-19 06:27:08 +00:00
Chris Lattner
60921c9aa1 Factor code out into the Utils library 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10530 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-19 05:58:40 +00:00
Chris Lattner
abbc2dd779 Add new function 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10529 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-19 05:56:28 +00:00
John Criswell
47df12d80d Reverted back to previous revision - this was previously merged 
according to the CVS log messages.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10517 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-18 17:19:19 +00:00
John Criswell
d000e1dc2f Merged in RELEASE_11. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10516 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-18 16:43:17 +00:00
Chris Lattner
ba7df4c482 When we delete instructions from the loop, make sure to remove them from the 
AliasSetTracker as well.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10507 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-18 08:12:32 +00:00
Chris Lattner
9e45d2e0e8 Fix for PR185 & IndVarsSimplify/2003-12-15-Crash.llx 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10473 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-15 17:34:02 +00:00
Chris Lattner
d64152a708 Refactor code just a little bit, allowing us to implement TailCallElim/return_constant.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10467 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-14 23:57:39 +00:00
Chris Lattner
00ad4a2d17 Do not promote volatile alias sets into registers 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10458 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-14 04:52:31 +00:00
Chris Lattner
ea9403f2aa Fix LICM/2003-12-11-SinkingToPHI.ll, and quite possibly all of the other known problems in the universe. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10409 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-11 22:23:32 +00:00
Chris Lattner
1301515197 verifyFunction depends on dominator info, which levelraise does not declare 
that it needs.  This is pretty scary code!  This fixes

Regression.Transforms.LevelRaise.2002-07-16-SourceAndDestCrash
Regression.Transforms.LevelRaise.2002-07-31-AssertionFailure


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10406 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-11 21:47:37 +00:00
Chris Lattner
7d3ced934f Fix bug: LICM/sink_multiple_exits.ll 
Thanks for pointing this out John  :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10387 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-10 22:35:56 +00:00
Chris Lattner
df45bd3803 Don't allow dead instructions to stop sinking early. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10386 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-10 20:43:29 +00:00
Chris Lattner
88369d214f Fix bug: IndVarsSimplify/2003-12-10-RemoveInstrCrash.llx 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10385 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-10 20:43:04 +00:00
Chris Lattner
dead99325c Finegrainify namespacification 
Fix bug: LowerInvoke/2003-12-10-Crash.llx


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10382 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-10 20:22:42 +00:00
Chris Lattner
ba4f3f6a41 Finegrainify namespacification 
Reorder #includes
Implement: IndVarsSimplify/2003-12-10-IndVarDeadCode.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10376 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-10 18:06:47 +00:00
Chris Lattner
66ea98e85c Finegrainify namespacification 
Fix bug: LoopSimplify/2003-12-10-ExitBlocksProblem.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10373 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-10 17:20:35 +00:00
Chris Lattner
e3cfe8d563 Simplify code 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10371 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-10 16:58:24 +00:00
Chris Lattner
f594a03197 Avoid performing two identical lookups when one will suffice 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10370 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-10 16:57:24 +00:00
Chris Lattner
0ed2da9ac7 Make LICM itself a bit more efficient, and make the generated code more efficient too: don't insert a store in every exit block, because a particular block may be exited to more than once by a loop 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10369 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-10 15:56:24 +00:00
Chris Lattner
a2706518f9 Implement instruction sinking out of loops. This still can do a little bit 
better job, but this is the majority of the work.  This implements
LICM/sink*.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10358 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-10 06:41:05 +00:00
Chris Lattner
010ba10032 Do not insert one entry PHI nodes in split exit blocks! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10348 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-09 23:12:55 +00:00
Chris Lattner
ed6dfc2856 Refactor code a little bit, eliminating the gratuitous InstVisitor, which 
should make subsequent changes simpler.  This also allows us to hoist vaarg
and vanext instructions


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10342 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-09 19:32:44 +00:00
Chris Lattner
92094b4d92 Fine grainify namespacification 
Code cleanups
Make LICM::SafeToHoist marginally more efficient


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10341 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-09 17:18:00 +00:00
Chris Lattner
cf2f89251d Implement: TailCallElim/accum_recursion_constant_arg.ll 
Also make sure to clean up any PHI nodes that are inserted which are pointless.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10333 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-08 23:37:35 +00:00
Chris Lattner
543d622ef7 Implement: test/Regression/Transforms/TailCallElim/accum_recursion.ll 
We now insert accumulator variables as necessary to eliminate tail recursion
more aggressively.  This is still fairly limited, but allows us to transform
fib/factorial, and other functions into nice happy loops.  :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10332 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-08 23:19:26 +00:00
Chris Lattner
7152da38ef Cleanup and restructure the code to make it easier to read and maintain. 
The only functionality change is that we now implement:
  Regression/Transforms/TailCallElim/intervening-inst.ll

Which is really kinda pointless, because it means that trivially dead code
does not interfere with -tce, but trivially dead code probably wouldn't be
around anytime when this pass is run anyway.

The point of including this change it to support other more aggressive
transformations when we have the analysis capabilities to do so.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10312 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-08 05:34:54 +00:00
Chris Lattner
eb12cd67dd Implement RaiseAllocations/FreeCastConstantExpr.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10305 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-07 01:42:08 +00:00
Chris Lattner
67b1e1b89f * Finegrainify namespacification 
* Transform: free <ty>* (cast <ty2>* X to <ty>*) into free <ty2>* X


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10303 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-07 01:24:23 +00:00
Chris Lattner
d866473094 Finegrainify namespacification 
Fix regressions ScalarRepl/basictest.ll & arraytest.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10287 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-12-02 17:43:55 +00:00
Chris Lattner
3607f4d217 Fix test: Transforms/LevelRaise/2003-11-28-IllegalTypeConversion.ll 
Some gep generalization changes


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10252 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-29 05:31:25 +00:00
Chris Lattner
be883a23ed Do not use index type to determine what it is indexing into! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10226 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-25 21:09:18 +00:00
Chris Lattner
ab25f5a6c1 Delete dead line 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10164 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-22 02:26:17 +00:00
Chris Lattner
3788c242be Fix bug: Transforms/PruneEH/2003-11-21-PHIUpdate.llx 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10163 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-22 02:20:36 +00:00
Chris Lattner
c8ecd22037 Do not crash when deleing a region with a dead invoke instruction 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10161 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-22 02:13:08 +00:00
Chris Lattner
35bb52f8b1 Finegrainify namespacification 
The module stripping pass should not strip symbols on external globals


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10157 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-22 01:29:35 +00:00
Chris Lattner
6d1db01284 Considering that CI is not even IN SCOPE here, I wooda thought the compiler 
would have caught this.  *sigh*


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10142 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-21 21:57:29 +00:00
Chris Lattner
1e2385b941 Finegrainify namespacification 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10138 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-21 21:54:22 +00:00
Chris Lattner
1192283096 Get rid of using decls, finegrainify namespacification 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10137 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-21 21:52:10 +00:00
Chris Lattner
869adc283c * Finegrainify namespacification 
* Make the cost metric for passing constants in as arguments to functions MUCH
  more accurate, by actually estimating the amount of code that will be constant
  propagated away.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10136 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-21 21:46:09 +00:00
Chris Lattner
a51bcb50b0 Finegrainify namespacification 
Print out the costs for functions that AREN'T inlined as well


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10135 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-21 21:45:31 +00:00
Chris Lattner
108e4ab159 Minor cleanups and simplifications 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10127 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-21 16:52:05 +00:00
Chris Lattner
03fb8b2a42 * Finegrainify namespacification 
* Implement FuncResolve/2003-11-20-BogusResolveWarning.ll
   ... which eliminates a large number of annoying warnings.  I know misha
   will miss them though!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10123 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-20 21:21:31 +00:00
Chris Lattner
f8485c6434 Start using the nicer terminator auto-insertion API 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10111 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-20 18:25:24 +00:00
Chris Lattner
adbc0b5287 Spew symbolic types! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10110 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-20 18:23:14 +00:00
Chris Lattner
143df9a1bb When spewing out warnings during function resolution, do not vomit out pages 
and pages of non-symbolic types.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10109 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-20 18:19:35 +00:00
Misha Brukman
444fdea19d This file was somehow missing a top-level comment line. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10055 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-17 19:35:17 +00:00
Chris Lattner
faa45ce300 Fix PR116 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10032 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-16 21:39:27 +00:00
Chris Lattner
917e804253 Implement feature: InstCombine/2003-11-13-ConstExprCastCall.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9981 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-13 19:17:02 +00:00
Brian Gaeke
d0fde30ce8 Put all LLVM code into the llvm namespace, as per bug 109. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9903 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-11 22:41:34 +00:00
Chris Lattner
363ca610d1 Reorganize code for locality, improve comments 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9857 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-10 04:42:42 +00:00
Chris Lattner
d23520cd94 Adjust to new critical edge interface 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9853 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-10 04:10:50 +00:00
Chris Lattner
d77922f1a2 Do NOT inline self recursive calls into other functions. This is causing the 
pool allocator no end of trouble, and doesn't make a lot of sense anyway.  This
does not solve the problem with mutually recursive functions, but they are much less common.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9828 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-09 05:05:36 +00:00
Chris Lattner
b045e14111 Untypo 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9827 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-09 05:04:25 +00:00
Misha Brukman
ed1f7c81aa Declare FunctionPasses as such so that they can be used in FunctionPassManager. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9768 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-07 17:20:18 +00:00
Chris Lattner
0c7e8e17ff Various cleanups and efficiency improvements 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9753 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-06 19:46:29 +00:00
Chris Lattner
d7222ec801 Fix bug: PR93 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9752 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-06 19:18:49 +00:00
Chris Lattner
b6e0631a94 Fix the problem with running cleanups in bugpoint: We were deleting arguments 
of intrinsic functions, causing the verifier to fail.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9745 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-05 21:53:41 +00:00
Chris Lattner
fdcc3acb7b Split behavior into two pieces 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9741 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-05 21:43:02 +00:00
Chris Lattner
e7a6663eb1 Yet more fixes for constant expr shifts 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9739 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-05 20:43:58 +00:00
Chris Lattner
d981f8af79 Further fixes for PR93 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9738 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-05 20:37:01 +00:00
Chris Lattner
1bcc70d240 Fix flawed logic that was breaking several SPEC benchmarks, including gzip and crafty. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9731 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-05 17:31:36 +00:00
Chris Lattner
646f8d7457 Be gcc 3.4 clean 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9725 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-05 06:12:18 +00:00
Chris Lattner
d65460f133 Fix bug with previous implementation: 
-      // ~(c-X) == X-(c-1) == X+(-c+1)
+      // ~(c-X) == X-c-1 == X+(-c-1)

Implement: C - ~X == X + (1+C)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9715 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-05 01:06:05 +00:00
Chris Lattner
ad5b4fb6b7 Minor cleanup, plus implement InstCombine/xor.ll:test17 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9711 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-04 23:50:51 +00:00
Chris Lattner
689d24b6ed Implement InstCombine/xor.ll:test(15|16) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9708 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-04 23:37:10 +00:00
John Criswell
700867bb69 Checking in Chris's suggestions: 
Added assert() to ensure symbol table is well formed.
Added code to remember the value that was found; resolving types can change
the symbol table and invalidate the value of the iterator.
Added comments to the ResolveTypes() function (mainly for my own benefit).
Please feel free to correct the comments if they are not accurate.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9693 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-04 15:22:26 +00:00
Chris Lattner
6870805117 Implement InstCombine/cast-set.ll:test6[a]. This improves code generated for 
a hot function in em3d


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9673 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-03 05:17:03 +00:00
Chris Lattner
de90b76670 Implement InstCombine/cast-set.ll: test1, test2, test7 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9670 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-03 04:25:02 +00:00
Chris Lattner
8ee9204309 Fix bug with zero sized casts 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9667 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-03 01:29:41 +00:00
Chris Lattner
fc07a3473a Fix bug in previous checkin 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9656 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-02 06:54:48 +00:00
Chris Lattner
bc61e661bd Implement transmogriphication of allocation instructions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9654 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-02 05:57:39 +00:00
Chris Lattner
d6d0d8c18d Fix PR78 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9648 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-11-02 02:06:27 +00:00
Chris Lattner
bb9ae1512e Strip off CPR's manually, because if we don't, the inliner doesn't delete dead 
functions.  GRR


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9641 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-31 21:05:58 +00:00
Chris Lattner
bb60904469 Fix bug: 2003-10-29-CallSiteResolve.ll & PR70 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9600 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-30 00:46:41 +00:00
Chris Lattner
942457564d Refactor code, initial implementation of -insert-block-profiling pass 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9593 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-29 21:24:22 +00:00
Chris Lattner
546fc40d69 Fix PR66 & ScalarRepl/2003-10-29-ArrayProblem.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9585 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-29 17:55:44 +00:00
Chris Lattner
6ace4daa57 Fix bug: ConstantMerge/2003-10-28-MergeExternalConstants.ll & PR64 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9579 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-29 06:01:26 +00:00
Chris Lattner
fe2143d87d Check in statistifying patch for Bill 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9572 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-28 23:14:59 +00:00
Chris Lattner
c0204e0b73 Pass in argc & argv 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9563 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-28 22:42:24 +00:00
Chris Lattner
baa2007fae Initial checkin of profiling instrumentation pass. So far, despite the 
file name, we only support function profiling.  This will be fixed in the
near future.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9547 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-28 18:59:04 +00:00
Chris Lattner
7b6dd2950f Eliminate using declarations 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9543 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-27 21:44:09 +00:00
Chris Lattner
2e8dfb8221 Propagating constants to arguments can make other arguments constant. For now 
do something dumb, and inefficient, but more complete.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9542 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-27 21:09:00 +00:00
Chris Lattner
35956558e2 Fix test: Linker/2003-10-27-LinkOncePromote.ll 
Fix PR58


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9530 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-27 16:39:39 +00:00
Chris Lattner
198f4507e2 Get the list of PHI node values before the basic block is split. Also, add 
PHI node entries for unwind instructions just like for call instructions which
became invokes!  This fixes PR57, tested by
Inline/2003-10-26-InlineInvokeExceptionDestPhi.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9526 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-27 05:33:09 +00:00
Chris Lattner
2e56dd82b3 We might as well strip off any CPRs before propagation 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9437 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-23 18:49:23 +00:00
Chris Lattner
ff5bf9c62b * We were forgetting to pass varargs arguments through a call 
* Add a work around for bug PR56, gross but necessary for now.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9428 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-23 17:44:53 +00:00
Chris Lattner
d358e6fed5 Check in initial version of ipcp 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9423 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-23 16:52:27 +00:00
Chris Lattner
c3afd9bf4b Make this pass substantially stronger by having it delete dead return values 
as well as arguments.  Now it can delete arguments and return values which are
only passed into other arguments or are returned, if they are dead.  This causes
it to delete several hundred extra args/retvals from the C++ hello world program,
shrinking it by about 2K.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9398 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-23 03:48:17 +00:00
Chris Lattner
ce94319558 This important patch fixes two warnings in the linker which can occur from linking 
valid pieces of code


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9390 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-22 23:03:38 +00:00
Chris Lattner
6be5e567ce Update the 'used' flag correctly 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9366 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-22 04:43:18 +00:00
Chris Lattner
4cb766af4a Loop over the module, not the symbol table. This makes the code handle 
unused external functions again


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9365 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-22 04:42:20 +00:00
Chris Lattner
efd47ba3ac Implement FunctionResolve/2003-10-21-GlobalResolveHack.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9363 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-22 03:35:34 +00:00
Chris Lattner
5858e1e3f3 Fix bug: FunctionResolve/2003-10-21-GlobalTypeDifference.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9359 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-21 23:17:56 +00:00
Chris Lattner
aeb18ce9c0 Fix bug: Linker/2003-10-21-ConflictingTypesTolerance.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9357 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-21 22:46:38 +00:00
Chris Lattner
f85770c9a6 Fix message to make more sense and confuse Chris less 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9354 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-21 21:52:20 +00:00
John Criswell
856ba76200 Added LLVM copyright header. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9321 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-21 15:17:13 +00:00
John Criswell
e488e9360b Added LLVM copyright notice to Makefiles. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9312 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-20 22:26:57 +00:00
John Criswell
b576c94c15 Added LLVM project notice to the top of every C++ source file. 
Header files will be on the way.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9298 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-20 19:43:21 +00:00
Chris Lattner
bacc773d20 Reorder for minor efficiency gain 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9285 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-20 05:54:26 +00:00
Chris Lattner
3b237fcd38 Change the Opcode enum for PHI nodes from "Instruction::PHINode" to "Instruction::PHI" to be more consistent with the other instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9269 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-19 21:34:28 +00:00
Chris Lattner
3c4a34e8db Fix PR#50 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9227 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-18 06:14:59 +00:00
Chris Lattner
cda965e28a ADd support for the new varargs instructions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9225 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-18 05:56:52 +00:00
Chris Lattner
9493101409 Do not crash on empty structures 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9195 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-17 18:03:54 +00:00
Chris Lattner
72ac148d49 Add support for 'weak' linkage. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9171 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-16 18:29:00 +00:00
Chris Lattner
76590640cf This code does not require random access use_lists 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9156 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-16 16:49:12 +00:00
Chris Lattner
28b2265eb9 Eliminate using declaration 
Rewrite code to work with use_lists what are either random access or bidirectional


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9155 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-16 16:48:53 +00:00
Chris Lattner
fd05924946 Decrease usage of use_size() 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9135 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-15 16:48:29 +00:00
Chris Lattner
fb42dd83f8 Cleanup 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9133 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-15 16:42:21 +00:00
Chris Lattner
f775f95369 Do not move variable sized allocations to the top of the caller, which might 
break dominance relationships, and is otherwise bad.  This fixes bug:
Inline/2003-10-13-AllocaDominanceProblem.ll.  This also fixes miscompilation
of 3 176.gcc source files (reload1.c, global.c, flow.c)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9109 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-14 01:11:07 +00:00
Chris Lattner
8b716f66ad Whoops, we inserted into the wrong set. What's up with the dead set anyway? 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9094 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-13 16:49:21 +00:00
Chris Lattner
46e033d28d Use external df iterators to avoid revisiting blocks in functions with 
multiple setjmp calls.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9093 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-13 16:44:50 +00:00
Chris Lattner
4a650af599 Wrap code at 80 columns 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9073 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-13 05:04:27 +00:00
Chris Lattner
cf3056db0f Regularize header file comments 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9071 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-13 03:32:08 +00:00
Chris Lattner
21fb3afe73 Regularize header file comment, eliminate using's 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9069 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-13 03:30:47 +00:00
Chris Lattner
6d3906be28 Minor cleanups 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9067 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-13 01:02:33 +00:00
Chris Lattner
bb2d4de409 Checkin an improvement contributed by Bill: 
Only transform call sites in a setjmp'ing function which are reachable from
the setjmp.  If the call dominates the setjmp (for example), the called
function cannot longjmp to the setjmp.

This dramatically reduces the number of invoke instructions created in some
large testcases.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9066 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-13 00:57:16 +00:00
Chris Lattner
2ab6a7358e Add support to the loop canonicalization pass to make it transform loops to 
have a SINGLE backedge.  This is useful to, for example, the -indvars pass.

This implements testcase LoopSimplify/single-backedge.ll and closes PR#34


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9065 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-13 00:37:13 +00:00
Chris Lattner
98bf436e2e Rename loop preheaders pass to loop simplify 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9061 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-12 21:52:28 +00:00
Chris Lattner
67a9801bc5 File is renamed to LoopSimplify.cpp 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9059 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-12 21:44:18 +00:00
Chris Lattner
ee2c50cca5 First step in renaming the preheaders pass to loopsimplify 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9058 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-12 21:43:28 +00:00
Chris Lattner
bebd86d58e The preheader insertion pass only depends on the CFG. Mark it as such, which 
allows GCCAS to only run it once.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9056 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-12 19:33:10 +00:00
Brian Gaeke
17634f7668 Include <cstdio> instead of <stdio.h>. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9032 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-10 18:46:52 +00:00
Brian Gaeke
e24b616faa Don't include Config/stdio.h or <stdio.h>. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9031 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-10 18:46:29 +00:00
Misha Brukman
cf00c4ab3b Fix spelling. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9027 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-10 17:57:28 +00:00
Misha Brukman
9c9c90df8f Fixing the spelling of this filename. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9009 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-10 16:57:31 +00:00
Chris Lattner
929c6fbcbc Update comment 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8965 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-08 16:56:11 +00:00
Chris Lattner
16b18fdc35 Use a set to keep track of which edges have been noticed as executable already 
to avoid reprocessing PHI nodes needlessly.  This speeds up the big bad PHI
testcase 43%: from 104.9826 to 73.5157s


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8964 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-08 16:55:34 +00:00
Chris Lattner
3d405b07b4 Minor fixes here and there 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8963 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-08 16:21:03 +00:00
Chris Lattner
7d275f459b Avoid building data structures we don't really need. This improves the runtime 
of a test that Bill Wendling sent me from 228.5s to 105s.  Obviously there is
more improvement to be had, but this is a nice speedup which should be "felt"
by many programs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8962 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-08 15:47:41 +00:00
Chris Lattner
d558dc3464 whoops, don't accidentally lose variable names 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8955 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-07 22:58:41 +00:00
Chris Lattner
6c266db54c Fix bug: InstCombine/cast.ll:test11 / PR#7 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8954 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-07 22:54:13 +00:00
Chris Lattner
a44d8a2897 Refactor code a bit 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8952 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-07 22:32:43 +00:00
Chris Lattner
da78b002ca Fix bugzilla bug #5 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8930 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-07 19:33:31 +00:00
Chris Lattner
ebbc1a5aa0 Bill contributed this major rewrite of the -lowerswitch pass to make it generate 
logarithmic conditional branch sequences instead of linear sequences.  Thanks Bill!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8928 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-07 18:46:23 +00:00
Chris Lattner
6061000b54 Fix bug in previous checkin 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8922 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-07 15:17:02 +00:00
Chris Lattner
4bb7c02eba Minor speedups for the instcombine pass 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8894 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-06 17:11:01 +00:00
Chris Lattner
884d6c4e10 Speed up the predicate used to decide when to inline by caching the size 
of callees between executions.

On eon, in release mode, this changes the inliner from taking 11.5712s
to taking 2.2066s.  In debug mode, it went from taking 14.4148s to
taking 7.0745s.  In release mode, this is a 24.7% speedup of gccas, in
debug mode, it's a total speedup of 11.7%.

This also makes it slightly more aggressive.  This could be because we
are not judging the size of the functions quite as accurately as before.
When we start looking at the performance of the generated code, this can
be investigated further.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8893 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-06 15:52:43 +00:00
Chris Lattner
5f92e2b11f Avoid doing pointless work. Amazingly, this makes us go faster. 
Running the inliner on 252.eon used to take 48.4763s, now it takes 14.4148s.

In release mode, it went from taking 25.8741s to taking 11.5712s.

This also fixes a FIXME.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8890 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-06 15:23:43 +00:00
Chris Lattner
69091be83b This changes the PromoteMemToReg function to create "pruned" SSA form, not 
"minimal" SSA form (in other words, it doesn't insert dead PHIs).  This
speeds up the mem2reg pass very significantly because it doesn't have to
do a lot of frivolous work in many common cases.

In the 252.eon function I have been playing with, this doesn't even insert
the 120 PHI nodes that it used to which were trivially dead (in the process
of promoting 356 alloca instructions overall).  This speeds up the mem2reg
pass from 1.2459s to 0.1284s.  More significantly, the DCE pass used to take
2.4138s to remove the 120 dead PHI nodes that mem2reg constructed, now it
takes 0.0134s (which is the time to scan the function and decide that there
is nothing dead).  So overall, on this one function, we speed things up a
total of 3.5179s, which is a 24.8x speedup!  :)

This change is tested by the Mem2Reg/2003-10-05-DeadPHIInsertion.ll test,
which now passes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8884 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-05 22:19:20 +00:00
Chris Lattner
43f820d1f7 Change the interface to PromoteMemToReg to also take a DominatorTree 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8883 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-05 21:20:13 +00:00
Chris Lattner
24011be956 Speed up the mem2reg transform for allocas which are only read/written in a single 
basic block.  This is amazingly common in code generated by the C/C++ front-ends.
This change makes it not have to insert ANY phi nodes, whereas before it would insert
a ton of dead ones which DCE would have to clean up.

Thus, this fix improves compile-time performance of these trivial allocas in two ways:
  1. It doesn't have to do the walking and book-keeping for renaming
  2. It does not insert dead phi nodes for them which would have to
     subsequently be cleaned up.

On my favorite testcase from 252.eon, this special case handles 305 out of
356 promoted allocas in the function.  It speeds up the mem2reg pass from 7.5256s
to 1.2505s.  It inserts 677 fewer dead PHI nodes, which speeds up a subsequent
-dce pass from 18.7524s to 2.4806s.

There are still 120 trivially dead PHI nodes being inserted for variables used
in multiple basic blocks, but they are not handled by this patch.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8881 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-05 20:54:03 +00:00
Chris Lattner
86e4445ec3 Initial checkin of the LLVM->LLVM transform to support code generators which 
do not support stack unwinding yet


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8869 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-05 19:14:42 +00:00
Chris Lattner
b55803a9f4 simplify-cfg is really a function pass 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8868 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-05 19:14:16 +00:00
Chris Lattner
92e4975af4 The first PHI node may be null, scan for the first non-null one 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8865 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-05 05:34:39 +00:00
Chris Lattner
3c881cb4ce The VersionNumbers vector is only used during PHI placement. Turn it into an argument, allowing us to get rid of the vector. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8864 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-05 04:33:22 +00:00
Chris Lattner
afa060ea3f * Update file header comment 
*** Revamp the code which handled unreachable code in the function.  Now the
    code is much more efficient for high-degree basic blocks, such as those
    that occur in the 252.eon SPEC benchmark.

For the interested, the time to promote a SINGLE alloca in _ZN7mrScene4ReadERSi
function used to be > 3.5s.  Now it is < .075s.  The function has a LOT of
allocas in it, so it appeared to be infinite looping, this should make it much
nicer.  :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8863 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-05 04:26:39 +00:00
Chris Lattner
521c16aadd Simplify the loop a bit 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8862 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-05 03:45:44 +00:00
Chris Lattner
92581c24a3 There is no need for separate WriteSets and PhiNodeBlocks lists. It is just a 
work-list of value definitions.  This allows elimination of the explicit
'iterative' step of the algorithm, and also reuses temporary memory better.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8861 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-05 03:39:10 +00:00
Chris Lattner
036f1e7478 The PhiNodes 2D vector is only used during PHI node placement. It doesn't 
need to be an instance variable!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8860 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-05 03:26:25 +00:00
Chris Lattner
9e38fbf57f * Document instance vars better 
* Fuse two parallel loops
* Use a more specific type for AllocaLookup


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8859 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-05 03:16:07 +00:00
Chris Lattner
9157f041ab Two small cleanups/speedups: 
* Do not insert a new entry into NewPhiNodes during the rename pass if there are no PHIs in a block.
 * Do not compute WriteSets in parallel


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8858 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-05 02:37:36 +00:00
Chris Lattner
0fa157127f * Minor cleanups 
* Eliminate the KillList instance variable, instead, just delete loads and
  stores as they are "renamed", and delete allocas when they are done
* Make the 'visited' set an instance variable to avoid passing it on the stack.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8857 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-05 01:52:53 +00:00
Chris Lattner
6b032052cc Implement InstCombine/add.ll:test17 & 18 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8817 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-10-02 15:11:26 +00:00
Chris Lattner
23ed9c1c97 Use global *_iterator 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8703 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-24 22:07:33 +00:00
Chris Lattner
f8b5b6ddb4 Do not use BasicBlock::*_iterator, just use *_iterator itself. 
Isn't updating copy and pasted code a joy


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8702 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-24 22:06:25 +00:00
Chris Lattner
332ae7f501 Fix bug: IndVarsSimplify/2003-09-23-NotAtTop.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8689 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-23 20:26:48 +00:00
Chris Lattner
dd7036d19a Fix bugs in the last change 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8667 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-22 23:30:59 +00:00
Chris Lattner
f98a084908 Fix bug: Inline/2003-09-22-PHINodesInNormalInvokeDest.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8666 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-22 22:35:39 +00:00
Chris Lattner
51d6816089 Fix bug: Inline/2003-09-22-PHINodesInExceptionDest.ll 
... by making sure to update PHI nodes to take into consideration the
extra edges we get if we inline a call instruction through an invoke.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8664 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-22 21:59:27 +00:00
Misha Brukman
22b9aab760 Credits now go into the top-level CREDITS.TXT 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8662 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-22 21:57:56 +00:00
Misha Brukman
763f5ae902 Credits are now in top-level CREDITS.TXT 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8661 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-22 21:57:15 +00:00
Chris Lattner
021c190f8d Squelch warning 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8659 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-22 20:33:34 +00:00
Chris Lattner
a2d51afd79 Global variables with APPENDING linkage are very important to keep around! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8632 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-20 19:00:50 +00:00
Chris Lattner
02a3be020a Rename Function::getEntryNode -> getEntryBlock 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8625 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-20 14:39:18 +00:00
Chris Lattner
ab4536e353 Minor cleanups, no functional changes 
Rename Function::getEntryNode -> getEntryBlock


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8623 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-20 14:36:23 +00:00
Chris Lattner
d452ebd0bf Fix a really obvious huge gaping bug, add a comment 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8620 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-20 05:24:00 +00:00
Chris Lattner
3fc6ef1bb9 Expose the TCE pass 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8619 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-20 05:14:13 +00:00
Chris Lattner
2240d2b3f7 New transformation: tail recursion elimination 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8618 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-20 05:03:31 +00:00
Chris Lattner
62a355cc6e Implement InstCombine/and.ll:test(15|16) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8607 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-19 19:05:02 +00:00
Chris Lattner
bd7b5fff82 pull a large nested conditional out into its own function 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8605 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-19 17:17:26 +00:00
Chris Lattner
9d5890d435 Implement InstCombine/add.ll:test(15|16) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8604 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-19 15:35:42 +00:00
Chris Lattner
cc838348fc Fix bug raising allocations whose call sites were invoke instructions. 
Thanks to brg for tracking down the problem so precisely!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8568 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-16 19:42:21 +00:00
Chris Lattner
1cbcd0fd48 This is effectively a complete rewrite of the globaldce algorithm, resulting 
in it being both shorter and more effective.  It no longer depends on the
callgraph, so one FIXME has been fixed.

Additionally, this pass was not able to delete recursive (but dead) functions
if they were pointed to by global variables which were also dead.  In fact
this pass had a lot of problems deleting functions which were only pointed
to by dead globals and other stuff.

Fixing this means that the entire EH library should be stripped away now from
programs that don't use sjlj or exceptions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8567 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-16 19:27:31 +00:00
Chris Lattner
77b398cd5f Minor cleanups, give credit, remove code that should not be necessary, and 
was a "major hack"  :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8524 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-15 05:43:05 +00:00
Chris Lattner
6420f1cd50 Initial checkin of the Setjmp/Longjmp lowering/transformation pass, 
contributed by the masterful Bill Wendling!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8520 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-15 04:56:27 +00:00
Chris Lattner
c9d3e5721b Ugh, a bug fix needed because of the bug in the CallGraph code 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8519 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-15 04:52:00 +00:00
Chris Lattner
ad9b5f31ea Fix bug: PruneEH/2003-09-14-ExternalCall.llx 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8516 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-15 02:22:50 +00:00
Chris Lattner
e07007c2bd Fix bug: Inline/2003-09-14-InlineValue.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8514 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-15 02:10:16 +00:00
Chris Lattner
a497748fb1 Make sure to cannonicalize loops before running indvar simplify 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8502 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-12 16:45:01 +00:00
Chris Lattner
8fce16ef1a Do not return success after checking only the FIRST USE of a gep instruction. 
Instead, check all uses.
This fixes bug: ScalarRepl/2003-09-12-IncorrectPromote.ll
This also fixes the miscompilation of Ptrdist/bc


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8493 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-12 16:02:12 +00:00
Chris Lattner
fe7ea0da17 Minor optimization efficiency improvement: 
- Run mem2reg promotion first
  - Only rerun passes if the previous thing changed something


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8490 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-12 15:36:03 +00:00
Chris Lattner
515c97c230 Simplify code 
Implement InstCombine/mul.ll:test9


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8488 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-11 22:24:54 +00:00
Misha Brukman
3cfb6b13c0 Apostrophes are only used for possession and quoting. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8473 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-11 16:58:31 +00:00
Chris Lattner
38aec32560 Integrate functionality of the mem2reg pass directly into this pass to make 
the combination more effective


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8471 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-11 16:45:55 +00:00
Chris Lattner
c444a4228f Renamed DominatorTree::Node::getNode() -> getBlock() 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8469 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-11 16:26:13 +00:00
Misha Brukman
352361b409 Spell `definite' correctly. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8467 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-11 15:32:37 +00:00
Misha Brukman
7bc439a4b6 Spell `definitely' correctly. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8466 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-11 15:31:17 +00:00
Chris Lattner
545a76ced8 Unwind instructions are intrinsically alive, just like returns 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8462 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-10 20:38:14 +00:00
Chris Lattner
1df2998451 Update for new UnifyFunction... API 
Remove using decl


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8458 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-10 20:35:33 +00:00
Chris Lattner
4ea31ca391 Remove #include 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8457 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-10 20:35:21 +00:00
Chris Lattner
f46057be77 Expand the pass to unify all of the unwind blocks as well 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8456 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-10 20:34:51 +00:00
Chris Lattner
065a616ada Fix spell-o's 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8431 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-10 05:29:43 +00:00
Chris Lattner
3adf51d022 Spelling fixes. I think that "cannonical" is ok, but "canonical" appears to 
be the canonical form for the word


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8430 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-10 05:24:46 +00:00
Chris Lattner
c01ccfd503 Fix up file header 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8428 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-10 05:10:34 +00:00
Misha Brukman
dfa5f83c8e Spell `occurrence' correctly. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8425 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-09 21:54:45 +00:00
Chris Lattner
ee5457cbe8 Eliminate support for the llvm.unwind intrinisic, using the Unwind instruction instead 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8411 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-08 19:44:26 +00:00
Chris Lattner
e4d9096409 Should invokify is always true 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8409 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-08 19:00:30 +00:00
Chris Lattner
36143fc444 Add support for the unwind instruction 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8408 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-08 18:54:55 +00:00
Chris Lattner
61c1e7e32d Do not hoist volatile loads 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8399 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-08 18:17:14 +00:00
Brian Gaeke
85ce5f3ccc Correct comments 
Don't include InstLoops.h
Don't export factory functions for these passes


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8373 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-05 19:43:19 +00:00
Chris Lattner
bf8810040e Prototype for creator function got moved 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8315 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-01 20:45:33 +00:00
Chris Lattner
758fefc0f0 Final cleanup: remove dead code 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8291 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-01 18:01:36 +00:00
Chris Lattner
273328e8e0 Not only is this a lot smaller, it actually works if there is already a 
function with the right name in the module.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8290 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-01 16:53:46 +00:00
Chris Lattner
a0201eaca8 Dead files 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8289 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-01 16:49:57 +00:00
Chris Lattner
09a670587a If "These should be used only by the auto-parallelization pass", we might as 
well put them INTO the auto-par pass.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8288 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-01 16:49:38 +00:00
Chris Lattner
60a3518cf9 Moved all of the cilkifier stuff into lib/Transforms/IPO, as it really is not 
support stuff.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8287 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-01 16:45:30 +00:00
Chris Lattner
aa9214524d Minor cleanups 
Do not #include Parallelize.h, it's just a subset of Cilkifier.h


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8285 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-01 16:42:16 +00:00
Chris Lattner
2dbfa03fd8 Change the RaiseAllocations pass to be a Pass instead of a BasicBlock pass. 
This makes it more efficient: it doesn't have to scan the whole program, so
it performs work proportional to the number of malloc/free calls in the
program, not the size of the program.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8280 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-09-01 03:14:56 +00:00
Chris Lattner
3186d275f7 Fix bug: TailDuplicate/2003-08-31-UnreachableBlocks.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8276 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-31 21:17:44 +00:00
Chris Lattner
237ef567f6 Heavily refactor code: 
* Separate the policy decisions into a derived class [InlineSimple]
  * Move the inlining mechanics into a base class [Inliner]
  * Change the inliner to be an SCCPass, making it more structured and
    eventually pipelinable with other SCC passes


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8257 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-31 19:10:30 +00:00
Chris Lattner
f6fb96f559 Add accessor function 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8253 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-31 16:30:07 +00:00
Chris Lattner
3e64b2e1a4 Initial checkin of the -prune-eh pass, a very simple exception handling removal pass 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8250 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-31 02:47:32 +00:00
Chris Lattner
a15854c9fe ScalarRepl does not modify the CFG. Say so! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8243 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-31 00:45:13 +00:00
Chris Lattner
7d8a86aa59 Use new interface, simplifies code 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8242 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-31 00:22:27 +00:00
Chris Lattner
034636444b Use the new interface, simplifies code 
NOTE that these two files are _BUGGY_ and need to be fixed, just not by me  :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8241 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-31 00:21:59 +00:00
Chris Lattner
30aef423d1 Use the new interface, simplifies code 
Delete a bunch of commented out code


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8240 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-31 00:21:05 +00:00
Chris Lattner
5f07c877b3 Use the new interface, simplifies code 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8239 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-31 00:20:36 +00:00
Chris Lattner
841e00b962 Fix bug where we considered function types equivalent even if they had differing numbers of arguments 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8178 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-28 16:42:50 +00:00
Chris Lattner
99b28e632f Fix bug: SCCP/2003-08-26-InvokeHandling.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8152 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-27 01:08:35 +00:00
Chris Lattner
f30862f33b Remove special casing 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8144 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-25 22:34:15 +00:00
Chris Lattner
77c5f733ac Fix bug: Linker/2003-08-23-GlobalVarLinking.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8130 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-24 19:30:20 +00:00
Chris Lattner
873c5e7859 Implement: Linker/2003-08-24-InheritPtrSize.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8129 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-24 19:26:42 +00:00
Chris Lattner
dc3602bf0d Implement SimplifyCFG/InvokeEliminate.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8126 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-24 18:36:16 +00:00
Chris Lattner
657fbe68b8 rethrow is really the language independent primitive here. "throw" can be written 
in terms of it and llvm.exc.setcurrent.
Rework the intrinsics.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8111 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-24 12:24:11 +00:00
Chris Lattner
e544533874 Inline invoke instructions as well as call instructions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8107 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-24 06:59:28 +00:00
Chris Lattner
80a38d2453 *** Implement inlining of Invoke instructions! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8106 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-24 06:59:16 +00:00
Chris Lattner
6a67393e19 Big diff for a small change: delete inlined functions if all callees have 
inlined the function.
Implements: Inline/inline_dce.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8101 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-24 05:03:14 +00:00
Chris Lattner
7152c237b4 Implement: Inline/cfg_preserve_test.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8099 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-24 04:06:56 +00:00
Chris Lattner
7d6c24cdbf Implement SimplifyCFG/2003-08-17-FoldSwitch.ll:test5 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8093 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-23 23:18:19 +00:00
Chris Lattner
44bb541c01 Fix bug: LowerSwitch/2003-08-23-EmptySwitch.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8087 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-23 22:54:34 +00:00
Chris Lattner
f44c6051e0 Do not consider any types that exist in the global symbol table! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8084 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-23 21:32:24 +00:00
Chris Lattner
e3092c94ad Fix bug: Linker/2003-08-23-RecursiveOpaqueTypeResolve.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8083 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-23 21:25:54 +00:00
Chris Lattner
fcd0234de6 Implement Linker/2003-08-23-GlobalVarLinking.ll, which should fix 176.gcc 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8080 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-23 20:31:10 +00:00
Chris Lattner
086cb002d2 Fix bug: TailDup/2003-08-23-InvalidatedPointers.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8078 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-23 20:08:30 +00:00
Chris Lattner
a0f85e56c9 Fix bug: FunctionResolve/2003-08-23-ArgumentWarning.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8076 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-23 20:03:05 +00:00
Chris Lattner
9732be769e Fix typeo 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8059 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-22 20:16:48 +00:00
Chris Lattner
43f4ba8c7d The process of linking types can cause their addresses to become invalid. For this reason, we must use TypeHandles! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8057 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-22 19:12:55 +00:00
Chris Lattner
e76c57ad46 Implement Linker/2003-08-20-OpaqueTypeResolve.ll 
Hopefully this will fix the 176.gcc spec test as well.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8051 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-22 06:07:12 +00:00
Misha Brukman
ef6a6a69ff The word dependent' has no a'. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8030 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-21 22:14:26 +00:00
Chris Lattner
b29170fa40 Unless we CANNOT merge the arguments, do so 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7999 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-20 23:50:38 +00:00
Chris Lattner
e6f7f61cda Fix grammar, add comment 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7967 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-18 22:54:06 +00:00
Misha Brukman
5560c9d49c Spell `necessary' correctly. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7944 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-18 14:43:39 +00:00
Chris Lattner
10b1f5a941 Implement folding of switch instructions. 
Implements SimplifyCFG/2003-08-17-FoldSwitch.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7923 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-17 20:21:14 +00:00
Chris Lattner
694e37f08a Fix bug: SimplifyCFG/2003-08-17-BranchFoldOrdering.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7921 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-17 19:41:53 +00:00
Chris Lattner
342a9d1464 The fixme is irrelevant: if that happens, the LLVM bytecode is malformed. 
This fixes testcase: SimplifyCFG/2003-08-17-BranchFold.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7919 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-17 19:34:55 +00:00
Brian Gaeke
bf3c4cfaad Factory methods for function passes now return type FunctionPass *. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7839 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-14 06:09:32 +00:00
Chris Lattner
250d91b4bf Fix FIXME by removing FIXME 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7832 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-13 22:15:04 +00:00
Chris Lattner
aa9c1f13a1 Implement instcombine optimizations: 
(A <setcc1> B) logicalop (A <setcc2> B)  -> (A <setcc3> B) or true or false

Where setcc[123] is one of the 6 setcc instructions, and logicalop is one of: And, Or, Xor


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7828 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-13 20:16:26 +00:00
Chris Lattner
564a727969 Generalize some of the add tests to allow for reassociation to take place 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7825 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-13 19:01:45 +00:00
Brian Gaeke
19df3876e6 Factory methods for FunctionPasses now return type FunctionPass *. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7823 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-13 18:18:15 +00:00
Chris Lattner
fb5be090f5 Assign arguments different ranks so they get grouped together 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7813 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-13 16:16:26 +00:00
John Criswell
478b3a9682 Removing the pool allocator from the main CVS tree. 
Use the poolalloc module in CVS from now on.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7810 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-13 15:36:15 +00:00
Chris Lattner
3ccd17ea2a Implement InstCombine/2003-08-12-AllocaNonNull.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7807 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-13 05:38:46 +00:00
Chris Lattner
934754bed6 Do not cannonicalize (X != 0) into (cast X to bool) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7806 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-13 05:33:12 +00:00
Chris Lattner
e92d2f450a Change cannonicalization rules: add X,X is represented as multiplies, multiplies 
of a power of two are represented as a shift.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7803 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-13 04:18:28 +00:00
Brian Gaeke
aee2fdf069 Give std::map<BasicBlock *, BasicBlock *> the short name BBMap, because 
it's used 7 different times.
Rename `getBackEdges' to `findAndInstrumentBackEdges', for clarity.
Remove some excess whitespace and commented-out code.
Use shorter forms of CallInst ctors.
Do not make `reopt_threshold' visible to the LLVM program, and do not
 pass it to the call to `reoptimizerInitialize'.  Don't pass the
 GlobalVariable representing it to any of our helper methods.
 `reopt_threshold' is an internal parameter of the reoptimizer, which
 InstLoops does not need to know about.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7794 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-12 22:00:24 +00:00
Chris Lattner
df17af1dc7 Allow pulling logical operations through shifts. 
This implements InstCombine/shift.ll:test14*


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7793 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-12 21:53:41 +00:00
Chris Lattner
e9608e37fc Fix bug: Reassociate/2003-08-12-InfiniteLoop.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7792 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-12 21:45:24 +00:00
Chris Lattner
6007cb6c4d Assign finer grained ranks, make sure to reassociate top-level after reassociating bottom level 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7787 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-12 20:14:27 +00:00
Chris Lattner
e132d95b62 Simplify code 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7783 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-12 19:17:27 +00:00
Chris Lattner
67ca768927 Implement testcases InstCombine/or.ll:test16/test17 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7782 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-12 19:11:07 +00:00
Sumant Kowshik
233d0758a1 Bug fix: Some nodes pointed to by globals may not be marked incomplete and need to be tracked to find pool arguments 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7763 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-12 00:45:13 +00:00
Chris Lattner
1f28e8ce4d Fix handling of 'free' if it has absolutely no prototype 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7721 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-11 15:05:08 +00:00
John Criswell
7d3c5795f9 Fixed a segfault in gccld. 
The original code does not work because the value from WorkList.end() is
invalidated once WorkList.erase() is called.  To ensure proper functionality,
we must ensure that WorkList.erase() is always called before WorkList.end().


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7673 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-07 14:43:13 +00:00
Sumant Kowshik
8e37bd0330 Added code for pool allocating only the pool-allocatable data structures in the presence of collapsed nodes + a couple of bug fixes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7662 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-07 05:29:28 +00:00
Chris Lattner
8043127860 Remove unnecessary use of NonCopyable 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7641 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-06 17:16:24 +00:00
Tanya Lattner
11a49a722f Fixed minor bug in SafeToHoist and made some changes suggested by Chris. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7614 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-05 20:39:02 +00:00
Tanya Lattner
9966c03aad Fixed LICM bug that hoists trapping instructions that are not guaranteed to execute. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7612 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-05 18:45:46 +00:00
Chris Lattner
c8afdc150c Minor changes: 
* Expand most tabs into spaces
  * Move #define DEBUG_TYPE to top of file to avoid warning


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7611 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-05 18:44:12 +00:00
Sumant Kowshik
f67e7fc7b1 Major bug fixes including a memory leak and tracking some exceptional conditions. Also added support for including global and indirect call information in the DS graphs used by the pool allocation 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7605 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-05 17:01:54 +00:00
Chris Lattner
122558b05b Fix bug: SimplifyCFG/2003-08-05-InvokeCrash.ll 
Fix bug: SimplifyCFG/2003-08-05-MishandleInvoke.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7599 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-05 16:27:44 +00:00
Chris Lattner
6806f5614d DEBUG got moved to Support/Debug.h 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7492 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-08-01 22:15:03 +00:00
Chris Lattner
943c713c65 Instcombine: (A >> c1) << c2 for signed integers 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7295 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-07-24 18:38:56 +00:00
Chris Lattner
08fd7abb42 Reorganization of code, no functional changes. 
Now it shoudl be a bit more efficient


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7292 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-07-24 17:52:58 +00:00
Chris Lattner
24c8e38455 Allow folding several instructions into casts, which can simplify a lot 
of codes.  For example,
short kernel (short t1) {
  t1 >>= 8; t1 <<= 8;
  return t1;
}

became:

short %kernel(short %t1.1) {
        %tmp.3 = shr short %t1.1, ubyte 8               ; <short> [#uses=1]
        %tmp.5 = cast short %tmp.3 to int               ; <int> [#uses=1]
        %tmp.7 = shl int %tmp.5, ubyte 8                ; <int> [#uses=1]
        %tmp.8 = cast int %tmp.7 to short               ; <short> [#uses=1]
        ret short %tmp.8
}

before, now it becomes:
short %kernel(short %t1.1) {
        %tmp.3 = shr short %t1.1, ubyte 8               ; <short> [#uses=1]
        %tmp.8 = shl short %tmp.3, ubyte 8              ; <short> [#uses=1]
        ret short %tmp.8
}

which will become:
short %kernel(short %t1.1) {
        %tmp.3 = and short %t1.1, 0xFF00
        ret short %tmp.3
}

This implements cast-set.ll:test4 and test5


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7290 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-07-24 17:35:25 +00:00
Chris Lattner
8baa92ef0b Minor cleanups 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7289 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-07-24 17:31:56 +00:00
Chris Lattner
1078d11854 Fix bug: FunctionResolve/2003-07-23-CPR-Reference.ll 
This fixes a long time annoyance which caused prototypes for bzero, bcopy,
bcmp, fputs, and fputs_unlocked to never get deleted.  Grr.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7285 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-07-23 22:03:18 +00:00
Chris Lattner
2cd9196e87 Add comments 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7283 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-07-23 21:41:57 +00:00
Chris Lattner
eca0c5c379 Remove explicit check for: not (not X) = X, it is already handled because xor is commutative 
- InstCombine: (X & C1) ^ C2 --> (X & C1) | C2 iff (C1&C2) == 0
  - InstCombine: (X | C1) ^ C2 --> (X | C1) & ~C2 iff (C1&C2) == C2


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7282 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-07-23 21:37:07 +00:00
Chris Lattner
06782f804f InstCombine: (X ^ C1) & C2 --> (X & C2) iff (C1&C2) == 0 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7272 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-07-23 19:36:21 +00:00
Chris Lattner
5840326ae6 - InstCombine: (X | C1) & C2 --> X & C2 iff C1 & C1 == 0 
- InstCombine: (X | C) & C --> C
  - InstCombine: (X | C1) & C2 --> (X | (C1&C2)) & C2


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7269 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-07-23 19:25:52 +00:00
Chris Lattner
ad44ebfff0 IC: (X & C1) | C2 --> (X | C2) & (C1|C2) 
IC: (X ^ C1) | C2 --> (X | C2) ^ (C1&~C2)

We are now guaranteed that all 'or's will be inside of 'and's, and all 'and's
will be inside of 'xor's, if the second operands are constants.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7264 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-07-23 18:29:44 +00:00
Chris Lattner
c6a8aff3f6 IC: (X ^ C1) & C2 --> (X & C2) ^ (C1&C2) 
Minor code cleanup


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7262 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-07-23 17:57:01 +00:00
Chris Lattner
00b1a7e23e InstCombine: (X ^ 4) == 8 --> X == 12 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7260 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-07-23 17:26:36 +00:00
Chris Lattner
bc5d414823 IC: (X & 5) == 13 --> false 
IC: (X | 8) == 4  --> false


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7257 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-07-23 17:02:11 +00:00
Chris Lattner
c07736a397 Simplify code by using ConstantInt::getRawValue instead of checking to see 
whether the constant is signed or unsigned, then casting


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7252 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-07-23 15:22:26 +00:00
Chris Lattner
00f185fbfd Fix bug: TailDup/2003-07-22-InfiniteLoop.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7243 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-07-23 03:32:41 +00:00
Chris Lattner
1ba5bcd1ae - InstCombine (cast (xor A, B) to bool) ==> (setne A, B) 
- InstCombine (cast (and X, (1 << size(X)-1)) to bool) ==> x < 0


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7241 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-07-22 21:46:59 +00:00
John Criswell
067947380c Added code that checks to see if a global variable is external before replacing 
a load of the global variable with the variable's constant value.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7216 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-07-21 19:42:57 +00:00
Anand Shukla
a235e14eaf Added check for inlinable function 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7206 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-07-18 20:55:26 +00:00
Anand Shukla
0df7ddbd31 A pass to combine multiple backedges that go to same target 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7201 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-07-18 16:08:32 +00:00
John Criswell
a676b78791 Dinakar and I fixed a bug where we were trying to get the initializer of 
an external constant.  Since external constants don't have initializers, we
were failing on an assert() call in llvm/GlobalVariable.h.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7193 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-07-17 19:06:55 +00:00
Vikram S. Adve
919fc8c367 Trace loads and stores as they happen (stores were being 
remembered in valuesStoredInFunction, but never traced at function return,
and that's too late to be finding the error anyway).
Stores trace both the value and the address being stored to,
but after some experience I think only values should be traced.
The pointer hash table just fills up far too quickly if every
store address were traced.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7169 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-07-11 21:57:43 +00:00
Anand Shukla
666ff520e6 Added functionality to instrmentation pass 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7161 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-07-10 21:55:57 +00:00
John Criswell
7a73b80b90 Merged in autoconf branch. This provides configuration via the autoconf 
system.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7014 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-06-30 21:59:07 +00:00
Chris Lattner
8bc95a176a Eliminate using declarations, adjust for new DSGraph API 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6992 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-06-30 03:14:44 +00:00
Chris Lattner
cf6bac3b56 Allow the inlining limit to be controlled from the command line! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6929 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-06-28 15:57:04 +00:00
Chris Lattner
b12b75365a Add support to globaldce for deleting dead function prototypes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6918 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-06-26 05:41:18 +00:00
Chris Lattner
81d4e14449 When internalizing global ctor/dtor list, also mark it constant. This is gross, but 
until DSA is working all of the time and is totally reliable, we do this.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6917 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-06-26 05:30:40 +00:00
Chris Lattner
833b8a4181 Add support for elimination of load instruction from global constants 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6912 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-06-26 05:06:25 +00:00
Chris Lattner
0af1fab019 Instcombine: X * -1 -> -X 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6904 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-06-25 17:09:20 +00:00
Chris Lattner
83c39d2edb Fix bug: Mem2Reg/2003-06-26-IterativePromote.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6901 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-06-25 14:58:56 +00:00
Chris Lattner
9b2a14b6f1 Add argument to DAE to allow operation on non-internal functions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6895 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-06-25 04:12:49 +00:00
Chris Lattner
837e42ccef Fix bug: ADCE/2003-06-24-BadSuccessor.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6891 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-06-24 23:02:45 +00:00
Chris Lattner
99c91e021a Do not mark ALL terminators live if any instruciton in the block is live. We only 
want to mark it live if it is an unconditional branch.  This fixes bug:
ADCE/2002-05-28-Crash.ll and makes this pass _much_ more useful.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6887 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-06-24 21:49:45 +00:00
Chris Lattner
38b5ae4b48 Fix bug: SCCP/2003-06-24-OverdefinedPHIValue.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6883 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-06-24 20:29:52 +00:00
Chris Lattner
fcd74e2e31 Fix bug: TailDup/2003-06-24-Simpleloop.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6881 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-06-24 19:48:06 +00:00
Chris Lattner
79d35b3f8b Implement new transforms: 
Replace (cast (sub A, B) to bool) -> (setne A, B)
  Replace (cast (add A, B) to bool) -> (setne A, -B)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6873 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-06-23 21:59:52 +00:00
Chris Lattner
8a334a4035 avoid dividing by zero when dealing with zero sized types (like [0 x double]) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6862 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-06-23 17:36:49 +00:00
Chris Lattner
066ab6ac80 Add paranoia checking 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6856 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-06-22 20:46:00 +00:00
Chris Lattner
ea635cd072 Test change 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6852 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-06-22 20:25:27 +00:00
Chris Lattner
7a7bef4355 Initial checkin of Tail duplication pass. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6846 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-06-22 20:10:28 +00:00
Chris Lattner
797249bc13 Instcombine cast (getelementptr Ptr, 0, 0, 0) to ... into: cast Ptr to ... 
This fixes type safety problems in a variety of benchmarks that were confusing
DSA.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6837 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-06-21 23:12:02 +00:00
Chris Lattner
1c6d6c996a Fix the build. :( 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6797 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-06-20 14:36:52 +00:00
Chris Lattner
31f612589f Changes to privatize NodeType 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6795 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-06-19 21:15:26 +00:00
Chris Lattner
9fe3886678 Implement the functionality of InstCombine/call.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6783 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-06-19 17:00:31 +00:00
Chris Lattner
a3df1ff807 Remove a bunch of complicated code. The functionality is implemented in instcombine instead 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6782 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-06-19 16:59:19 +00:00
Chris Lattner
97f4b664cd Handle arguments passed in through the va_arg area 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6769 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-06-18 16:25:51 +00:00
Chris Lattner
08227e4f17 Initial checkin of DAE pass 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6759 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-06-17 22:21:05 +00:00
Chris Lattner
bea68b3021 Don't corrupt memory when removing an instruction from the program, but 
not the worklist


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6733 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-06-17 03:57:18 +00:00
Chris Lattner
34e353e560 Fix bug: ADCE/2003-06-11-InvalidCFG.ll 
This was because we were deleting large chunks of functions without an exit block, because the post-dominance
information was not useful.  This broke crafty and twolf.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6698 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-06-16 12:10:45 +00:00
Chris Lattner
e32487ebff Fix bug: LevelRaise/2003-06-07-EmptyArrayTest.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6669 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-06-07 21:45:42 +00:00
Chris Lattner
4432d8f3b5 Fix compilation problem on GCC 2.9x 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6667 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-06-07 20:29:58 +00:00
Chris Lattner
9b5fd22bd9 Fix bug: InstCombine/2003-06-05-BranchInvertInfLoop.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6630 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-06-05 20:12:51 +00:00
Anand Shukla
cd0cc61329 Fixed a bug so initialization code is always inserted in main 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6622 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-06-05 06:02:46 +00:00
Chris Lattner
d3646f1586 Use a constant expr GEP instead of an actual instruction 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6620 91177308-0d34-0410-b5e6-96231b3b80d8
 2003-06-05 04:48:18 +00:00