Evan Cheng 02c4285643 Fixes a nasty dag combiner bug that causes a bunch of tests to fail at -O0. ... It's not safe to use the two value CombineTo variant to combine away a dead load. e.g. v1, chain2 = load chain1, loc v2, chain3 = load chain2, loc v3 = add v2, c Now we replace use of v1 with undef, use of chain2 with chain1. ReplaceAllUsesWith() will iterate through uses of the first load and update operands: v1, chain2 = load chain1, loc v2, chain3 = load chain1, loc v3 = add v2, c Now the second load is the same as the first load, SelectionDAG cse will ensure the use of second load is replaced with the first load. v1, chain2 = load chain1, loc v3 = add v1, c Then v1 is replaced with undef and bad things happen. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46099 91177308-0d34-0410-b5e6-96231b3b80d8		2008-01-16 23:11:54 +00:00
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Alpha	xfail a test	2007-11-28 05:37:13 +00:00
ARM	Remove xfail. This is fixed.	2007-12-20 02:25:21 +00:00
CBackend	Change all floating constants that are not exactly	2007-09-05 17:50:36 +00:00
CellSPU	More CellSPU refinements:	2008-01-11 21:01:19 +00:00
Generic	new testcase for llvm.trap.	2008-01-15 22:17:26 +00:00
IA64	Convert .cvsignore files	2007-06-29 16:35:07 +00:00
PowerPC	add testcase for regression	2008-01-16 18:03:52 +00:00
SPARC	Convert tests using "| wc -l | grep ..." to use the count script.	2007-08-15 13:36:28 +00:00
X86	Fixes a nasty dag combiner bug that causes a bunch of tests to fail at -O0.	2008-01-16 23:11:54 +00:00