4 Commits

Author	SHA1	Message	Date
Eli Friedman	447f95202a	Silly mistake from r137777; restore significant isStructTy() checks. While here, be a bit more defensive ... with unknown instructions. Fixes PR10687. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137836 91177308-0d34-0410-b5e6-96231b3b80d8	2011-08-17 18:10:43 +00:00
Eli Friedman	054ddf799b	A bunch of misc fixes to SCCPSolver::ResolvedUndefsIn, including a fix to stop ... making random bad assumptions about instructions which are not explicitly listed. Includes fix for rdar://9956541, a version of "undef ^ undef should return 0 because it's easier than arguing with users". git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137777 91177308-0d34-0410-b5e6-96231b3b80d8	2011-08-16 22:06:31 +00:00
Chris Lattner	8581c260d3	fix PR6940: sitofp(undef) folds to 0.0, not undef. ... git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102358 91177308-0d34-0410-b5e6-96231b3b80d8	2010-04-26 18:21:23 +00:00
Chris Lattner	8829cec25f	fix a SCCP miscompilation that could happen when a ... forced constant is changed to a constant, we would end up adding the instruction to the wrong worklist, preventing it from being properly revisited. This fixes rdar://7832370 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100837 91177308-0d34-0410-b5e6-96231b3b80d8	2010-04-09 01:14:31 +00:00