Commit Graph

483 Commits

Author SHA1 Message Date
Chris Lattner
d38f208cd9 Fix a faulty optimization on FP values
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11801 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-24 18:10:14 +00:00
Chris Lattner
d8864ce766 Generate much more efficient code in programs like pifft
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11775 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-23 21:46:58 +00:00
Chris Lattner
077a373791 Fix a small typeo in my checkin last night that broke vortex and other programs :(
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11774 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-23 21:46:42 +00:00
Chris Lattner
8adac75298 Fix InstCombine/2004-02-23-ShiftShiftOverflow.ll
Also, turn 'shr int %X, 1234' into 'shr int %X, 31'


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11768 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-23 20:30:06 +00:00
Chris Lattner
c5943fb186 Implement cast.ll::test14/15
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11742 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-23 07:16:20 +00:00
Chris Lattner
4cb170cc6e Refactor some code. In the mul - setcc folding case, we really care about
whether this is the sign bit or not, so check unsigned comparisons as well.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11740 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-23 06:38:22 +00:00
Chris Lattner
fed58fd72e Implement mul.ll:test11
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11737 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-23 06:00:11 +00:00
Chris Lattner
45aaafef49 Implement "strength reduction" of X <= C and X >= C
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11735 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-23 05:47:48 +00:00
Chris Lattner
fb54b2b744 Implement InstCombine/mul.ll:test10, which is a case that occurs when dealing
with "predication"


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11734 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-23 05:39:21 +00:00
Chris Lattner
c6bd195336 Implement Transforms/InstCombine/cast.ll:test13, a case which occurs in a
hot 164.gzip loop.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11702 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-22 05:25:17 +00:00
Chris Lattner
7059f2e76b Fold PHI nodes of constants which are only used by a single cast. This implements
phi.ll:test4


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11494 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-16 05:07:08 +00:00
Chris Lattner
26ca7e145e Teach LLVM to unravel the "swap idiom". This implements:
Regression/Transforms/InstCombine/xor.ll:test20


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11492 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-16 03:54:20 +00:00
Chris Lattner
c317d39887 Implement Transforms/InstCombine/xor.ll:test19
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11490 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-16 01:20:27 +00:00
Chris Lattner
de512b5b2e Adjustments to support the new ConstantAggregateZero class
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11474 91177308-0d34-0410-b5e6-96231b3b80d8
2004-02-15 05:55:15 +00:00
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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