David Green 2c4ca6832f [InstCombine] Signed saturation patterns ...

This adds an instcombine matcher for code that attempts to perform signed
saturating arithmetic by casting to a higher type. Unsigned cases are already
matched, this adds extra matches for the more complex signed cases, which
involves matching the min(max(add a b)) nodes with proper extends to ensure
legality.

Differential Revision: https://reviews.llvm.org/D68651


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@375505 91177308-0d34-0410-b5e6-96231b3b80d8

2019-10-22 15:39:47 +00:00

..

CMakeLists.txt

[InstCombine] Optimize atomicrmw <op>, 0 into load atomic when possible

2019-02-07 21:27:23 +00:00

InstCombineAddSub.cpp

[NFC][InstCombine] Fixup comments

2019-10-21 08:21:54 +00:00

InstCombineAndOrXor.cpp

[InstCombine] conditional sign-extend of high-bit-extract: 'or' pattern.

2019-10-20 20:52:06 +00:00

InstCombineAtomicRMW.cpp

[Alignment][NFC] Remove StoreInst::setAlignment(unsigned)

2019-10-03 13:17:21 +00:00

InstCombineCalls.cpp

[Alignment][NFC] Convert StoreInst to MaybeAlign

2019-10-22 12:55:32 +00:00

InstCombineCasts.cpp

[InstCombine] don't assume 'inbounds' for bitcast deref or null pointer in non-default address space

2019-10-13 17:19:08 +00:00

InstCombineCompares.cpp

[InstCombine] Fold uadd.sat(a, b) == 0 and usub.sat(a, b) == 0

2019-10-20 20:19:42 +00:00

InstCombineInternal.h

[InstCombine] Signed saturation patterns

2019-10-22 15:39:47 +00:00

InstCombineLoadStoreAlloca.cpp

[Alignment][NFC] Convert StoreInst to MaybeAlign

2019-10-22 12:55:32 +00:00

InstCombineMulDivRem.cpp

[InstCombine] fold fneg disguised as select+fmul (PR43497)

2019-10-06 14:15:48 +00:00

InstCombinePHI.cpp

[Alignment][NFC] Convert LoadInst to MaybeAlign

2019-10-22 12:35:55 +00:00

InstCombineSelect.cpp

[InstCombine] Signed saturation patterns

2019-10-22 15:39:47 +00:00

InstCombineShifts.cpp

[InstCombine] Shift amount reassociation in shifty sign bit test (PR43595)

2019-10-20 19:38:50 +00:00

InstCombineSimplifyDemanded.cpp

[InstCombine] Allow values with multiple users in SimplifyDemandedVectorElts

2019-10-21 08:12:47 +00:00

InstCombineTables.td

InstCombine/AMDGPU: Add dimension-aware image intrinsics to SimplifyDemanded

2018-06-21 13:37:31 +00:00

InstCombineVectorOps.cpp

[InstCombine] Allow values with multiple users in SimplifyDemandedVectorElts

2019-10-21 08:12:47 +00:00

InstructionCombining.cpp

[InstCombine] Use m_Zero instead of isNullValue() when checking if a GEP index is all zeroes to prevent an infinite loop.

2019-09-26 17:20:50 +00:00

LLVMBuild.txt

Update the file headers across all of the LLVM projects in the monorepo

2019-01-19 08:50:56 +00:00