6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-12-14 11:32:34 +00:00
Code Issues Projects Releases Wiki Activity
5939f08f5e
llvm-6502/lib/Transforms/InstCombine
History
David Majnemer 5939f08f5e InstCombine: Don't unconditionally preserve 'nuw' when shrinking constants 
Consider:
  %add = add nuw i32 %a, -16777216
  %and = and i32 %add, 255

Regardless of whether or not we demand the sign bit of %add, we cannot
replace -16777216 with 2130706432 without also removing 'nuw' from the
instruction.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216273 91177308-0d34-0410-b5e6-96231b3b80d8
2014-08-22 17:11:04 +00:00
..
CMakeLists.txt
InstCombine.h InstCombine: Fold ((A | B) & C1) ^ (B & C2) -> (A & C1) ^ B if C1^C2=-1 2014-08-21 05:14:48 +00:00
InstCombineAddSub.cpp InstCombine: sub nsw %x, C -> add nsw %x, -C if C isn't INT_MIN 2014-08-22 16:41:23 +00:00
InstCombineAndOrXor.cpp InstCombine: Fold ((A | B) & C1) ^ (B & C2) -> (A & C1) ^ B if C1^C2=-1 2014-08-21 05:14:48 +00:00
InstCombineCalls.cpp Canonicalization for @llvm.assume 2014-07-25 21:45:17 +00:00
InstCombineCasts.cpp Fix comment in InstCombiner::visitAddrSpaceCast. 2014-07-16 01:34:21 +00:00
InstCombineCompares.cpp This patch implements optimization as mentioned in PR19753: Optimize comparisons with "ashr/lshr exact" of a constanst. 2014-07-22 19:19:36 +00:00
InstCombineLoadStoreAlloca.cpp AA metadata refactoring (introduce AAMDNodes) 2014-07-24 12:16:19 +00:00
InstCombineMulDivRem.cpp Remove an InstCombine that transformed patterns like (x * uitofp i1 y) to (select y, x, 0.0) when the multiply has fast math flags set. 2014-08-17 03:51:29 +00:00
InstCombinePHI.cpp Repace SmallPtrSet with SmallPtrSetImpl in function arguments to avoid needing to mention the size. 2014-08-21 05:55:13 +00:00
InstCombineSelect.cpp
InstCombineShifts.cpp fixed typo in comment 2014-07-22 04:57:06 +00:00
InstCombineSimplifyDemanded.cpp InstCombine: Don't unconditionally preserve 'nuw' when shrinking constants 2014-08-22 17:11:04 +00:00
InstCombineVectorOps.cpp
InstCombineWorklist.h Canonicalize header guards into a common format. 2014-08-13 16:26:38 +00:00
InstructionCombining.cpp Repace SmallPtrSet with SmallPtrSetImpl in function arguments to avoid needing to mention the size. 2014-08-21 05:55:13 +00:00
LLVMBuild.txt
Makefile