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llvm-6502/lib/Transforms/InstCombine
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David Majnemer edbc0df974 [InstCombine] Rephrase fix to SimplifyWithOpReplaced 
I don't have the IR which is causing the build bot breakage but I can
postulate as to why they are timing out:
1. SimplifyWithOpReplaced was stripping flags from the simplified value.
2. visitSelectInstWithICmp was overriding SimplifyWithOpReplaced because
   it's simplification wasn't correct.
3. InstCombine would revisit the add instruction and note that it can
   rederive the flags.
4. By modifying the value, we chose to revisit instructions which reuse
   the value.  One of the instructions is the original select, causing
   LLVM to never reach fixpoint.

Instead, strip the flags only when we are sure we are going to perform
the simplification.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239141 91177308-0d34-0410-b5e6-96231b3b80d8
2015-06-05 09:57:57 +00:00
..
CMakeLists.txt Use ADDITIONAL_HEADER_DIRS in all LLVM CMake projects. 2015-02-11 03:28:02 +00:00
InstCombineAddSub.cpp [ValueTracking] refactor: extract method haveNoCommonBitsSet 2015-05-14 23:53:19 +00:00
InstCombineAndOrXor.cpp [ConstantRange] Split makeICmpRegion in two. 2015-03-18 00:41:24 +00:00
InstCombineCalls.cpp [InstSimplify] Handle some overflow intrinsics in InstSimplify 2015-05-22 03:56:46 +00:00
InstCombineCasts.cpp Reapply r237539 with a fix for the Chromium build. 2015-05-20 18:41:25 +00:00
InstCombineCompares.cpp [InstSimplify] Handle some overflow intrinsics in InstSimplify 2015-05-22 03:56:46 +00:00
InstCombineInternal.h Rip min/max pattern matching out of InstCombine and into 2015-05-11 14:42:20 +00:00
InstCombineLoadStoreAlloca.cpp [InstCombine] Fold IntToPtr and PtrToInt into preceding loads. 2015-05-28 18:39:17 +00:00
InstCombineMulDivRem.cpp [InstCombine] (mul nsw 1, INT_MIN) != (shl nsw 1, 31) 2015-04-18 04:41:30 +00:00
InstCombinePHI.cpp Convert PHI getIncomingValue() to foreach over incoming_values(). NFC. 2015-05-12 20:05:31 +00:00
InstCombineSelect.cpp [InstCombine] Rephrase fix to SimplifyWithOpReplaced 2015-06-05 09:57:57 +00:00
InstCombineShifts.cpp Convert PHI getIncomingValue() to foreach over incoming_values(). NFC. 2015-05-12 20:05:31 +00:00
InstCombineSimplifyDemanded.cpp Reapply r237539 with a fix for the Chromium build. 2015-05-20 18:41:25 +00:00
InstCombineVectorOps.cpp [InstCombine] Use DataLayout to determine vector element width 2015-04-03 20:18:40 +00:00
InstructionCombining.cpp Replace push_back(Constructor(foo)) with emplace_back(foo) for non-trivial types 2015-05-29 19:43:39 +00:00
LLVMBuild.txt Update libdeps since TLI was moved from Target to Analysis in r226078. 2015-01-15 05:21:00 +00:00
Makefile