Charlie Turner 424da54881 [InstCombine] Recognize another bswap idiom. ...

Summary:
The byte-swap recognizer can now notice that this

```
uint32_t bswap(uint32_t x)
{
  x = (x & 0x0000FFFF) << 16 | (x & 0xFFFF0000) >> 16;
  x = (x & 0x00FF00FF) << 8 | (x & 0xFF00FF00) >> 8;
  return x;
}
```
    
is a bswap. Fixes PR23863.

Reviewers: nlewycky, hfinkel, hans, jmolloy, rengolin

Subscribers: majnemer, rengolin, llvm-commits

Differential Revision: http://reviews.llvm.org/D12637

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@248482 91177308-0d34-0410-b5e6-96231b3b80d8

2015-09-24 10:24:58 +00:00

..

CMakeLists.txt

Use ADDITIONAL_HEADER_DIRS in all LLVM CMake projects.

2015-02-11 03:28:02 +00:00

InstCombineAddSub.cpp

don't repeat function names in comments; NFC

2015-09-09 15:24:36 +00:00

InstCombineAndOrXor.cpp

[InstCombine] Recognize another bswap idiom.

2015-09-24 10:24:58 +00:00

InstCombineCalls.cpp

[X86][SSE] Replace 128-bit SSE41 PMOVSX intrinsics with native IR

2015-09-23 08:48:33 +00:00

InstCombineCasts.cpp

There is a trunc(lshr (zext A), Cst) optimization in InstCombineCasts that

2015-09-10 11:31:20 +00:00

InstCombineCompares.cpp

[InstCombine] FoldICmpCstShrCst failed for ashr when comparing against -1

2015-09-19 00:48:31 +00:00

InstCombineInternal.h

add ShouldChangeType() variant that takes bitwidths

2015-09-21 16:09:37 +00:00

InstCombineLoadStoreAlloca.cpp

Clean up: Refactoring the hardcoded value of 6 for FindAvailableLoadedValue()'s parameter MaxInstsToScan. (Complete version of r247497. See D12886)

2015-09-18 19:14:35 +00:00

InstCombineMulDivRem.cpp

don't repeat function names in comments; NFC

2015-09-09 15:24:36 +00:00

InstCombinePHI.cpp

[InstCombine] Preserve metadata when merging loads that are phi

2015-09-23 18:40:57 +00:00

InstCombineSelect.cpp

don't repeat function names in comments; NFC

2015-09-09 15:24:36 +00:00

InstCombineShifts.cpp

Convert PHI getIncomingValue() to foreach over incoming_values(). NFC.

2015-05-12 20:05:31 +00:00

InstCombineSimplifyDemanded.cpp

[InstCombine] Added vector demanded bits support for SSE4A EXTRQ/INSERTQ instructions

2015-09-17 20:32:45 +00:00

InstCombineVectorOps.cpp

don't repeat function names in comments; NFC

2015-09-09 15:24:36 +00:00

InstructionCombining.cpp

add ShouldChangeType() variant that takes bitwidths

2015-09-21 16:09:37 +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

…