Chris Lattner
36ba5006df
Implement a refinement to the mem2reg algorithm for cases where an alloca
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has a single def. In this case, look for uses that are dominated by the def
and attempt to rewrite them to directly use the stored value.
This speeds up mem2reg on these values and reduces the number of phi nodes
inserted. This should address PR665.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24411 91177308-0d34-0410-b5e6-96231b3b80d8
2005-11-18 07:31:42 +00:00
Chris Lattner
fed40df846
This needs proper dominance
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24410 91177308-0d34-0410-b5e6-96231b3b80d8
2005-11-18 07:29:44 +00:00
Nate Begeman
14b0529532
Add support alignment of allocation instructions.
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Add support for specifying alignment and size of setjmp jmpbufs.
No targets currently do anything with this information, nor is it presrved
in the bytecode representation. That's coming up next.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24196 91177308-0d34-0410-b5e6-96231b3b80d8
2005-11-05 09:21:28 +00:00
Chris Lattner
cbbc6b74e3
Fix #include order
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24044 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-27 16:34:00 +00:00
John Criswell
a115643357
Move some constant folding code shared by Analysis and Transform passes
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into the LLVMAnalysis library.
This allows LLVMTranform and LLVMTransformUtils to be archives and linked
with LLVMAnalysis.a, which provides any missing definitions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24036 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-27 15:54:34 +00:00
John Criswell
e96a1a576b
1. Remove libraries no longer created from the list of libraries linked into the
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SparcV9 JIT.
2. Make LLVMTransformUtils a relinked object file and always link it before
LLVMAnalysis.a. These two libraries have circular dependencies on each
other which creates problem when building the SparcV9 JIT. This change
fixes the dependency on all platforms problems with a minimum of fuss.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24023 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-26 20:35:13 +00:00
Chris Lattner
f36aeedaa3
DONT_BUILD_RELINKED is gone and implied by BUILD_ARCHIVE now
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23940 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-24 02:26:13 +00:00
Chris Lattner
ab0ed3592b
Only build .a file versions of these libraries, instead of .a and .o versions.
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This should speed up build times.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23933 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-24 01:59:48 +00:00
Jeff Cohen
66c5fd6c53
When a function takes a variable number of pointer arguments, with a zero
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pointer marking the end of the list, the zero *must* be cast to the pointer
type. An un-cast zero is a 32-bit int, and at least on x86_64, gcc will
not extend the zero to 64 bits, thus allowing the upper 32 bits to be
random junk.
The new END_WITH_NULL macro may be used to annotate a such a function
so that GCC (version 4 or newer) will detect the use of un-casted zero
at compile time.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23888 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-23 04:37:20 +00:00
Chris Lattner
ab55698349
Fix DemoteRegToStack on an invoke. This fixes PR634.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23618 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-04 00:44:01 +00:00
Chris Lattner
7a66e686fe
Clean up the code a bit. Use isInstructionTriviallyDead to be more aggressive
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and more correct than use_empty(). This fixes PR635 and
SimplifyCFG/2005-10-02-InvokeSimplify.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23616 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-03 23:43:43 +00:00
Jeff Cohen
2aeaf4e839
Fix VC++ warnings.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23579 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-01 03:57:14 +00:00
Chris Lattner
93e50ce04c
Insert stores after phi nodes in the normal dest. This fixes
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LowerInvoke/2005-08-03-InvokeWithPHI.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23525 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-29 17:44:20 +00:00
Chris Lattner
32643d8e05
Constant fold llvm.sqrt
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23487 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-28 01:34:32 +00:00
Chris Lattner
5b3c70263b
add a note about a way to improve this code further, that I won't be getting
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to right now.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23485 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-27 22:44:59 +00:00
Chris Lattner
4531371960
Avoid spilling stack slots... to stack slots.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23478 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-27 21:33:12 +00:00
Chris Lattner
f4e6c3a69b
Completely rewrite 'correct' eh support. This changes how setjmp insertion
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is performed so it is only at most once per function that contains an invoke
instead of once per invoke in the function. This patch has the following perks:
1. It fixes PR631, which complains about slowness.
2. If fixes PR240, which complains about non-volatile vars being live across
setjmp/longjmps.
3. It improves (but does not fix) the jmpbuf alignment issue on itanium by not
forcing the jmpbufs to always be 8-bytes off the alignment of the structure.
4. It speeds up 253.perlbmk from 338s to 13.70s (a 25x improvement!), making us
now about 4% faster than GCC.
Further improvements are also possible.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23477 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-27 21:18:17 +00:00
Chris Lattner
6d7277b3b4
allow demotion to volatile values, add support for invoke
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23473 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-27 19:39:00 +00:00
Chris Lattner
c5f52e6da1
Move the ConstantFoldLoadThroughGEPConstantExpr function out of the InstCombine
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pass.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23444 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-26 05:27:10 +00:00
Chris Lattner
b60e0815df
remove some debugging code
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23411 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-23 18:49:09 +00:00
Chris Lattner
263d1e469d
Fold two consequtive branches that share a common destination between them.
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This implements SimplifyCFG/branch-fold.ll, and is useful on ?:/min/max heavy
code
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23410 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-23 18:47:20 +00:00
Chris Lattner
055dc102e9
simplify some logic further
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23408 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-23 07:23:18 +00:00
Chris Lattner
f58c1a578e
pull a bunch of logic out of SimplifyCFG into a helper fn
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23407 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-23 06:39:30 +00:00
Chris Lattner
e9487f0dc8
Start threading across blocks with code in them, so long as the code does
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not define a value that is used outside of it's block. This catches many
more simplifications, e.g. 854 in 176.gcc, 137 in vpr, etc.
This implements branch-phi-thread.ll:test3.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23397 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-20 01:48:40 +00:00
Chris Lattner
2e42e36698
Implement merging of blocks with the same condition if the block has multiple
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predecessors. This implements branch-phi-thread.ll::test1
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23395 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-20 00:43:16 +00:00
Chris Lattner
9c88d98162
Reject a case we don't handle yet
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23393 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-19 23:57:04 +00:00
Chris Lattner
7e1ff8d2d9
remove debugging code :-/
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23392 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-19 23:50:15 +00:00
Chris Lattner
eaba3a194c
Implement SimplifyCFG/branch-phi-thread.ll, the most trivial case of threading
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control across branches with determined outcomes. More generality to follow.
This triggers a couple thousand times in specint.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23391 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-19 23:49:37 +00:00
Chris Lattner
0ae380a8ac
Teach SplitCriticalEdge to update LoopInfo if it is alive. This fixes
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a problem in LoopStrengthReduction, where it would split critical edges
then confused itself with outdated loop information.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22776 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-13 01:38:43 +00:00
Chris Lattner
8385393dc8
remove dead code. The exit block list is computed on demand, thus does not
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need to be updated. This code is a relic from when it did.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22775 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-13 01:30:36 +00:00
Chris Lattner
b01bfd49c3
Change break critical edges to not remove, then insert, PHI node entries.
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Instead, just update the BB in-place. This is both faster, and it prevents
split-critical-edges from shuffling the PHI argument list unneccesarily.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22765 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-12 21:58:07 +00:00
Chris Lattner
98599ba6c6
remove some trickiness that broke yacr2 and some other programs last night
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22751 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-10 17:15:20 +00:00
Chris Lattner
94f4032448
Make loop-simplify produce better loops by turning PHI nodes like X = phi [X, Y]
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into just Y. This often occurs when it seperates loops that have collapsed loop
headers. This implements LoopSimplify/phi-node-simplify.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22746 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-10 02:07:32 +00:00
Chris Lattner
5e1b231921
This code can handle non-dominating instructions
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22667 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-05 00:57:45 +00:00
Nate Begeman
a83ba0f5c9
Fix a fixme in CondPropagate.cpp by moving a PhiNode optimization into
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BasicBlock's removePredecessor routine. This requires shuffling around
the definition and implementation of hasContantValue from Utils.h,cpp into
Instructions.h,cpp
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22664 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-04 23:24:19 +00:00
Chris Lattner
f1adce42b2
The correct fix for PR612, which also fixes
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Transforms/LowerInvoke/2005-08-03-InvokeWithPHIUse.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22628 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03 18:51:44 +00:00
Chris Lattner
6e459bf0a7
When inserting code, make sure not to insert it before PHI nodes. This
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fixes PR612 and Transforms/LowerInvoke/2005-08-03-InvokeWithPHI.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22626 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03 18:34:29 +00:00
Chris Lattner
6306d07aa8
Fix Transforms/SimplifyCFG/2005-08-03-PHIFactorCrash.ll, a problem that
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occurred while bugpointing another testcase
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22621 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03 17:59:45 +00:00
Chris Lattner
1aad921c18
Finally, add the required constraint checks to fix Transforms/SimplifyCFG/2005-08-01-PHIUpdateFail.ll
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the right way
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22615 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03 00:59:12 +00:00
Chris Lattner
dc88dbeafa
Simplify some code, add the correct pred checks
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22613 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03 00:38:27 +00:00
Chris Lattner
3b3efc7797
Refactor code out of PropagatePredecessorsForPHIs, turning it into a pure function with no side-effects
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22612 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03 00:29:26 +00:00
Chris Lattner
d423b8b6ca
use splice instead of remove/insert to avoid some symtab operations
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22611 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03 00:23:42 +00:00
Chris Lattner
2bdcb56146
move two functions up in the file, use SafeToMergeTerminators to eliminate
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some duplicated code
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22610 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03 00:19:45 +00:00
Chris Lattner
7e66348cba
Rip some code out of the main SimplifyCFG function into a subfunction and
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call it from the only place it is live. No functionality changes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22609 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03 00:11:16 +00:00
Chris Lattner
17de414965
Disable this patch:
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http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20050801/027345.html
This breaks real programs and only fixes an obscure regression testcase. A
real fix is in development.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22606 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-02 23:31:38 +00:00
Chris Lattner
f5e982daa8
Change a place to use an arbitrary value instead of null, when possible
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22605 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-02 23:29:23 +00:00
Chris Lattner
1593ac259d
This code was very close, but not quite right. It did not take into
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consideration the case where a reference in an unreachable block could
occur. This fixes Transforms/SimplifyCFG/2005-08-01-PHIUpdateFail.ll,
something I ran into while bugpoint'ing another pass.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22584 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-02 03:24:05 +00:00
Jeff Cohen
00b16889ab
Eliminate all remaining tabs and trailing spaces.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22523 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-27 06:12:32 +00:00
Chris Lattner
6cfd1ebcd3
Fix PR590 and Transforms/Mem2Reg/2005-06-30-ReadBeforeWrite.ll.
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The optimization for locally used allocas was not safe for allocas that
were read before they were written. This change disables that optimization
in that case.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22318 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-30 07:29:44 +00:00
Andrew Lenharth
94cd87f658
prevent DCE of vaarg intrinsics. This should take care of most regressions
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22263 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-19 14:41:20 +00:00
Chris Lattner
0289929c62
Don't crash on: X = phi (X, X).
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This fixes PR584 and Transforms/SimplifyCFG/2005-06-16-PHICrash.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22232 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-17 01:45:53 +00:00
Chris Lattner
71fae1022e
Fix a 64-bit problem, passing (int)0 through ... instead of (void*)0
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22206 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-09 03:32:54 +00:00
Chris Lattner
42eb7524ef
Fix Transforms/SimplifyCFG/switch-simplify-crash.ll
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22158 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-20 22:19:54 +00:00
Chris Lattner
16d0db2da8
Make sure to preserve the calling convention when changing an invoke into
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a call. This fixes Prolangs-C++/deriv2, kimwitu++, and Misc-C++/bigfib
on X86 with -enable-x86-fastcc.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22023 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-14 12:21:56 +00:00
Chris Lattner
efd9168eae
When lowering invokes to calls, amke sure to preserve the calling conv. This
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fixes Ptrdist/anagram with x86 llcbeta
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21925 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-13 06:27:02 +00:00
Chris Lattner
1381dd8a6e
Prefer int 0 instead of long 0 for GEP arguments.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21924 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-13 06:10:12 +00:00
Chris Lattner
c154cef9a1
wrap long lines, preserve calling conventions when cloning functions and
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turning calls into invokes
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21797 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-09 01:04:34 +00:00
Chris Lattner
3799ed83b4
BAD typeo which caused many testsuite failures last night. Note to self, do
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not change code after testing it without retesting!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21741 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-06 17:13:16 +00:00
Chris Lattner
a9e9211bbb
Preserve tail marker
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21737 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-06 06:48:21 +00:00
Chris Lattner
1b49141821
Implement Transforms/Inline/inline-tail.ll
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21736 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-06 06:47:52 +00:00
Chris Lattner
ec710c5b12
DCE intrinsic instructions without side effects.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21719 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-06 05:27:34 +00:00
John Criswell
fe3706a12b
Fixed a comment.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21653 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-02 14:47:42 +00:00
Reid Spencer
df4945bcb5
Remove optimizations that don't require both operands to be constant. These
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are moved to simplify-libcalls pass.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21614 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-29 05:55:35 +00:00
Reid Spencer
1d3b71846b
* Add constant folding for additional floating point library calls such as
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sinh, cosh, etc.
* Make the name comparisons for the fp libcalls a little more efficient by
switching on the first character of the name before doing comparisons.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21611 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-28 23:01:59 +00:00
Jeff Cohen
9d80930e95
Eliminate tabs and trailing spaces
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21480 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-23 21:38:35 +00:00
Misha Brukman
fd93908ae8
Remove trailing whitespace
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21427 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-21 23:48:37 +00:00
Chris Lattner
0f67dd6237
Improve doxygen documentation, patch contributed by Evan Jones!
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21393 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-21 16:04:49 +00:00
Chris Lattner
bf5d4fb7d8
Teach simplifycfg that setcc is cheap and non-trapping, so that it can
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convert this:
%tmp.1 = seteq int %i, 0 ; <bool> [#uses=1]
br bool %tmp.1, label %shortcirc_done, label %shortcirc_next
shortcirc_next: ; preds = %entry
%tmp.4 = seteq int %j, 0 ; <bool> [#uses=1]
br label %shortcirc_done
shortcirc_done: ; preds = %shortcirc_next, %entry
%shortcirc_val = phi bool [ %tmp.4, %shortcirc_next ], [ true, %entry ] ; <bool> [#uses=1]
to this:
%tmp.1 = seteq int %i, 0 ; <bool> [#uses=1]
%tmp.4 = seteq int %j, 0 ; <bool> [#uses=1]
%shortcirc_val = select bool %tmp.1, bool true, bool %tmp.4 ; <bool> [#uses=1]
... which is later simplified by instcombine into an or.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21388 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-21 05:31:13 +00:00
Chris Lattner
151c80be81
Get rid of this for_each loop
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21253 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-12 18:51:33 +00:00
Alkis Evlogimenos
ab7ada3ed6
Rename createPromoteMemoryToRegister() to
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createPromoteMemoryToRegisterPass() to be consistent with other pass
creation functions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20885 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-28 02:01:12 +00:00
Chris Lattner
cec5b8831d
Enhance loopsimplify to preserve alias analysis instead of clobbering it.
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This prevents crashes on some programs when using -ds-aa -licm.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20831 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-25 06:37:22 +00:00
Chris Lattner
5b3a4553c1
Fix the missing symbols problem Bill was hitting. Patch contributed by
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Bill Wendling!!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20649 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-17 15:38:16 +00:00
Chris Lattner
e4d5c441e0
This mega patch converts us from using Function::a{iterator|begin|end} to
...
using Function::arg_{iterator|begin|end}. Likewise Module::g* -> Module::global_*.
This patch is contributed by Gabor Greif, thanks!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20597 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-15 04:54:21 +00:00
Chris Lattner
fee3411379
trivial simplification
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20494 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-06 21:35:38 +00:00
Chris Lattner
7acff25f7f
second argument to Value::setName is now gone.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20463 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-05 19:05:20 +00:00
Chris Lattner
5f792c2c53
Add an optional argument to lower to a specific constant value instead of
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to a "sizeof" expression.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20414 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-03 01:03:43 +00:00
Chris Lattner
da895d6337
Fix spelling, patch contributed by Gabor Greif!
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20343 91177308-0d34-0410-b5e6-96231b3b80d8
2005-02-27 06:18:25 +00:00
Chris Lattner
be54dcc8a9
remove extraneous cast
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20334 91177308-0d34-0410-b5e6-96231b3b80d8
2005-02-26 18:33:28 +00:00
Chris Lattner
623369ac56
Implement Transforms/SimplifyCFG/switch_thread.ll
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This does a simple form of "jump threading", which eliminates CFG edges that
are provably dead. This triggers 90 times in the external tests, and
eliminating CFG edges is always always a good thing! :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20300 91177308-0d34-0410-b5e6-96231b3b80d8
2005-02-24 06:17:52 +00:00
Chris Lattner
5551706b0f
Adjust to changes in instruction interfaces.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19900 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-29 00:39:08 +00:00
Chris Lattner
378805969e
switchinst ctor now takes a hint for the number of cases that it will have.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19898 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-29 00:38:26 +00:00
Chris Lattner
13b2f764c0
Implement SimplifyCFG/DeadSetCC.ll
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SimplifyCFG is one of those passes that we use for final cleanup: it should
not rely on other passes to clean up its garbage. This fixes the "why are
trivially dead setcc's in the output of gccas" problem.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19212 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-01 16:02:12 +00:00
Chris Lattner
de97b5788c
Get rid of getSizeOf, using ConstantExpr::getSizeOf instead.
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do not insert a prototype for malloc of: void* malloc(uint): on 64-bit u
targets this is not correct. Instead of prototype it as void *malloc(...),
and pass the correct intptr_t through the "...".
Finally, fix Regression/CodeGen/SparcV9/2004-12-13-MallocCrash.ll, by not
forming constantexpr casts from pointer to uint.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18908 91177308-0d34-0410-b5e6-96231b3b80d8
2004-12-13 20:00:02 +00:00
Chris Lattner
284d1b8827
The split bb is really the exit of the old function
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18799 91177308-0d34-0410-b5e6-96231b3b80d8
2004-12-11 16:59:54 +00:00
Chris Lattner
7613437db9
Fix Regression/Transforms/SimplifyCFG/2004-12-10-SimplifyCFGCrash.ll,
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and the failure on make_dparser last night.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18766 91177308-0d34-0410-b5e6-96231b3b80d8
2004-12-10 17:42:31 +00:00
Reid Spencer
791a959e57
For PR387:\
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Add doInitialization method to avoid overloaded virtuals
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18602 91177308-0d34-0410-b5e6-96231b3b80d8
2004-12-07 08:11:36 +00:00
Chris Lattner
0f535c6fa8
Squelch warning
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18381 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-30 07:47:34 +00:00
Chris Lattner
5a85d9c664
Fix test/Regression/Transforms/LICM/2004-09-14-AliasAnalysisInvalidate.llx
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This only fails on darwin or on X86 under valgrind.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18377 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-30 07:01:15 +00:00
Chris Lattner
6f9e571529
Alkis noticed that this variable is dead. Thanks!
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18369 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-30 04:01:44 +00:00
Chris Lattner
37dc938bbe
If we have something like this:
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if (x) {
code
...
} else {
code
...
}
Turn it into:
code
if (x) {
...
} else {
...
}
This reduces code size and in some common cases allows us to completely
eliminate the conditional. This turns several if/then/else blocks in loops
into straightline code in 179.art, turning the loops into single basic blocks
(good for modsched even!).
Maybe now brg will leave me alone ;-)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18366 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-30 00:29:14 +00:00
Misha Brukman
e74c73cf46
Allow constructor parameter to override aggregating args; fix spacing
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18028 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-20 02:20:27 +00:00
Chris Lattner
0c3b390a54
Lazily create the abort message, so only translation units that use unwind
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will actually get it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17700 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-13 19:07:32 +00:00
Chris Lattner
9ecc046184
Fix: CodeExtractor/2004-11-12-InvokeExtract.ll
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17699 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-13 00:06:45 +00:00
Chris Lattner
68c311aac6
Fix a bug where the code extractor would get a bit confused handling invoke
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instructions, setting DefBlock to a block it did not have dom info for.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17697 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-12 23:50:44 +00:00
Chris Lattner
44c94b9671
Simplify handling of constant initializers
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17696 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-12 22:42:57 +00:00
Chris Lattner
bfd3e52701
Do not compute the predecessor list for a block unless we need it.
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This speeds up simplifycfg on this program, from 44.87s to 0.29s (with
a profiled build):
#define CL0(a) case a: goto c;
#define CL1(a) CL0(a##0) CL0(a##1) CL0(a##2) CL0(a##3) CL0(a##4) CL0(a##5) \
CL0(a##6) CL0(a##7) CL0(a##8) CL0(a##9)
#define CL2(a) CL1(a##0) CL1(a##1) CL1(a##2) CL1(a##3) CL1(a##4) CL1(a##5) \
CL1(a##6) CL1(a##7) CL1(a##8) CL1(a##9)
#define CL3(a) CL2(a##0) CL2(a##1) CL2(a##2) CL2(a##3) CL2(a##4) CL2(a##5) \
CL2(a##6) CL2(a##7) CL2(a##8) CL2(a##9)
#define CL4(a) CL3(a##0) CL3(a##1) CL3(a##2) CL3(a##3) CL3(a##4) CL3(a##5) \
CL3(a##6) CL3(a##7) CL3(a##8) CL3(a##9)
void f();
void a() {
int b;
c: switch (b) {
CL4(1)
}
}
This testcase is contrived to expose N^2 behavior, but this patch should speedup
simplifycfg on any programs that use large switch statements. This testcase
comes from GCC PR17895.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17389 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-01 06:53:58 +00:00
Reid Spencer
6cb21d443e
Change Library Names Not To Conflict With Others When Installed
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17286 91177308-0d34-0410-b5e6-96231b3b80d8
2004-10-27 23:18:45 +00:00
Reid Spencer
4e073a871b
Eliminate compilation warning on uninitialized variable.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17163 91177308-0d34-0410-b5e6-96231b3b80d8
2004-10-22 16:10:39 +00:00
Reid Spencer
cac731ecbe
We won't use automake
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17155 91177308-0d34-0410-b5e6-96231b3b80d8
2004-10-22 03:35:04 +00:00
Reid Spencer
86d341b204
Initial automake generated Makefile template
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17136 91177308-0d34-0410-b5e6-96231b3b80d8
2004-10-18 23:55:41 +00:00