Guozhi Wei e225b39cd4 [PPC] Fix code generation for bswap(int32) followed by store16 ...

This patch fixes pr32063.

Current code in PPCTargetLowering::PerformDAGCombine can transform

bswap
store

into a single PPCISD::STBRX instruction. but it doesn't consider the case that the operand size of bswap may be larger than store size. When it occurs, we need 2 modifications,

1 For the last operand of PPCISD::STBRX, we should not use DAG.getValueType(N->getOperand(1).getValueType()), instead we should use cast<StoreSDNode>(N)->getMemoryVT().

2 Before PPCISD::STBRX, we need to shift the original operand of bswap to the right side.

Differential Revision: https://reviews.llvm.org/D30362



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296811 91177308-0d34-0410-b5e6-96231b3b80d8

2017-03-02 21:07:59 +00:00

..

AArch64

[AArch64] Extend redundant copy elimination pass to handle non-zero stores.

2017-03-02 20:48:11 +00:00

AMDGPU

LiveRegMatrix: Fix some subreg interference checks

2017-03-02 00:35:08 +00:00

ARM

[DAGCombiner] avoid assertion when folding binops with opaque constants

2017-03-02 17:18:56 +00:00

AVR

[AVR] Disable integrated assembler for a few tests

2017-02-22 22:41:13 +00:00

BPF

In visitSTORE, always use FindBetterChain, rather than only when UseAA is enabled.

2017-02-28 14:24:15 +00:00

Generic

Do not verify MachimeDominatorTree if it is not calculated

2017-03-02 12:00:10 +00:00

Hexagon

[Hexagon] Skip blocks that define vector predicate registers in early-if

2017-03-02 18:10:59 +00:00

Inputs

[PR27284] Reverse the ownership between DICompileUnit and DISubprogram.

2016-04-15 15:57:41 +00:00

Lanai

[lanai] Simplify small section check in LowerGlobalAddress and treat ldata sections specially.

2016-12-15 16:56:16 +00:00

Mips

Elide argument copies during instruction selection

2017-03-01 21:42:00 +00:00

MIR

MIRTests: Remove unnecessary 2>&1 redirection

2017-02-22 18:47:41 +00:00

MSP430

[MSP430] Add SRet support to MSP430 target

2017-03-02 20:25:10 +00:00

NVPTX

[DAGCombiner] add missing folds for scalar select of {-1,0,1}

2017-02-24 17:17:33 +00:00

PowerPC

[PPC] Fix code generation for bswap(int32) followed by store16

2017-03-02 21:07:59 +00:00

SPARC

Codegen: Make chains from trellis-shaped CFGs

2017-02-15 19:49:14 +00:00

SystemZ

In visitSTORE, always use FindBetterChain, rather than only when UseAA is enabled.

2017-02-28 14:24:15 +00:00

Thumb

[ARM] Don't generate deprecated T1 STM.

2017-02-28 23:32:55 +00:00

Thumb2

[ARM] Replace HasT2ExtractPack with HasDSP

2017-02-17 15:42:44 +00:00

WebAssembly

[WebAssembly] Convert the remaining unit tests to the new wasm-object-file target.

2017-02-28 23:37:04 +00:00

WinEH

Avoid infinite loops in branch folding

2016-12-12 23:05:38 +00:00

X86

[X86][MMX] Fixed i32 extraction on 32-bit targets

2017-03-02 18:56:06 +00:00

XCore

In visitSTORE, always use FindBetterChain, rather than only when UseAA is enabled.

2017-02-28 14:24:15 +00:00