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| author | Simon Pilgrim <llvm-dev@redking.me.uk> | 2019-04-08 20:59:38 +0000 |
|---|---|---|
| committer | Simon Pilgrim <llvm-dev@redking.me.uk> | 2019-04-08 20:59:38 +0000 |
| commit | 9f74df7d5bcd63302e4b8bfb609ed6cb1f0ae9d7 (patch) | |
| tree | 3de92a90cd178a590fb297ceef0f5d26045ac647 /llvm/test/CodeGen/X86/extract-insert.ll | |
| parent | 4cf5743b7784b2c2bff8be82e1a5cc37f8c68a36 (diff) | |
| download | bcm5719-llvm-9f74df7d5bcd63302e4b8bfb609ed6cb1f0ae9d7.tar.gz bcm5719-llvm-9f74df7d5bcd63302e4b8bfb609ed6cb1f0ae9d7.zip | |
[TargetLowering] SimplifyDemandedBits - use DemandedElts in bitcast handling
Be more selective in the SimplifyDemandedBits -> SimplifyDemandedVectorElts bitcast call based on the demanded elts.
llvm-svn: 357942
Diffstat (limited to 'llvm/test/CodeGen/X86/extract-insert.ll')
| -rw-r--r-- | llvm/test/CodeGen/X86/extract-insert.ll | 11 |
1 files changed, 1 insertions, 10 deletions
diff --git a/llvm/test/CodeGen/X86/extract-insert.ll b/llvm/test/CodeGen/X86/extract-insert.ll index be5f9ed24fb..97ca884a54b 100644 --- a/llvm/test/CodeGen/X86/extract-insert.ll +++ b/llvm/test/CodeGen/X86/extract-insert.ll @@ -28,30 +28,21 @@ define i8 @extractelt_bitcast(i32 %x) nounwind { ret i8 %ext } -; TODO: This should have folded to avoid vector ops, but the transform -; is guarded by 'hasOneUse'. That limitation apparently makes some AMDGPU -; codegen better. - define i8 @extractelt_bitcast_extra_use(i32 %x, <4 x i8>* %p) nounwind { ; X86-LABEL: extractelt_bitcast_extra_use: ; X86: # %bb.0: ; X86-NEXT: pushl %eax ; X86-NEXT: movl {{[0-9]+}}(%esp), %eax -; X86-NEXT: movd %eax, %xmm0 -; X86-NEXT: punpcklbw {{.*#+}} xmm0 = xmm0[0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7] ; X86-NEXT: movl {{[0-9]+}}(%esp), %ecx ; X86-NEXT: movl %eax, (%ecx) -; X86-NEXT: movd %xmm0, %eax ; X86-NEXT: # kill: def $al killed $al killed $eax ; X86-NEXT: popl %ecx ; X86-NEXT: retl ; ; X64-LABEL: extractelt_bitcast_extra_use: ; X64: # %bb.0: -; X64-NEXT: movd %edi, %xmm0 -; X64-NEXT: punpcklbw {{.*#+}} xmm0 = xmm0[0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7] +; X64-NEXT: movl %edi, %eax ; X64-NEXT: movl %edi, (%rsi) -; X64-NEXT: movd %xmm0, %eax ; X64-NEXT: # kill: def $al killed $al killed $eax ; X64-NEXT: retq %bc = bitcast i32 %x to <4 x i8> |
