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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Analysis	Don't be rude, emit debugging info where asked to.	2008-01-02 02:49:20 +00:00
Archive	Remove attribution from file headers, per discussion on llvmdev.	2007-12-29 20:36:04 +00:00
AsmParser	If there are attributes on the varargs part of a	2008-01-11 21:23:39 +00:00
Bitcode	Remove attribution from file headers, per discussion on llvmdev.	2007-12-29 20:36:04 +00:00
CodeGen	Fixes a nasty dag combiner bug that causes a bunch of tests to fail at -O0.	2008-01-16 23:11:54 +00:00
Debugger	Remove attribution from file headers, per discussion on llvmdev.	2007-12-29 20:36:04 +00:00
ExecutionEngine	I doubt the address of the Error string was intended	2008-01-07 19:14:42 +00:00
Linker	Remove attribution from file headers, per discussion on llvmdev.	2007-12-29 20:36:04 +00:00
Support	Remove attribution from file headers, per discussion on llvmdev.	2007-12-29 20:36:04 +00:00
System	Fix compile failures with g++-4.3.	2008-01-09 19:42:09 +00:00
Target	Trampoline support for x86-64. This looks like	2008-01-16 22:55:25 +00:00
Transforms	Handle attribute(used) global variables that are i8.	2008-01-16 21:35:43 +00:00
VMCore	improve compatibility with mingw, patch by Alain Frisch	2008-01-15 22:50:50 +00:00
Makefile	remove attribution from lib Makefiles.	2007-12-29 20:09:26 +00:00