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| author | Sanjay Patel <spatel@rotateright.com> | 2018-10-11 22:04:36 +0000 |
|---|---|---|
| committer | Sanjay Patel <spatel@rotateright.com> | 2018-10-11 22:04:36 +0000 |
| commit | 99c02f6301028ed92b322655a7f12cf2e4549088 (patch) | |
| tree | 13fb1d4d78eba97983ecd3d313aa4a33539769ff /llvm/test/CodeGen/X86/extract-insert.ll | |
| parent | 936cfa86e5641cfac5f950034d9c786a0465e339 (diff) | |
| download | bcm5719-llvm-99c02f6301028ed92b322655a7f12cf2e4549088.tar.gz bcm5719-llvm-99c02f6301028ed92b322655a7f12cf2e4549088.zip | |
[x86] add tests for extract_element; NFC
The transform for this pattern has an unnecessary one-use limitation.
llvm-svn: 344303
Diffstat (limited to 'llvm/test/CodeGen/X86/extract-insert.ll')
| -rw-r--r-- | llvm/test/CodeGen/X86/extract-insert.ll | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/X86/extract-insert.ll b/llvm/test/CodeGen/X86/extract-insert.ll index a6cac874c41..de8ee704b88 100644 --- a/llvm/test/CodeGen/X86/extract-insert.ll +++ b/llvm/test/CodeGen/X86/extract-insert.ll @@ -12,3 +12,47 @@ define i32 @extractelt_undef_insertelt(i32 %x, i32 %y) { ret i32 %d } +define i8 @extractelt_bitcast(i32 %x) nounwind { +; X86-LABEL: extractelt_bitcast: +; X86: # %bb.0: +; X86-NEXT: movb {{[0-9]+}}(%esp), %al +; X86-NEXT: retl +; +; X64-LABEL: extractelt_bitcast: +; X64: # %bb.0: +; X64-NEXT: movl %edi, %eax +; X64-NEXT: # kill: def $al killed $al killed $eax +; X64-NEXT: retq + %bc = bitcast i32 %x to <4 x i8> + %ext = extractelement <4 x i8> %bc, i32 0 + ret i8 %ext +} + +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, (%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> + store <4 x i8> %bc, <4 x i8>* %p + %ext = extractelement <4 x i8> %bc, i32 0 + ret i8 %ext +} + |
