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a6995220b3
Summary: This patch correctly handles undef case of EXTRACT_VECTOR_ELT node where the element index is constant and not less than vector size. Test Plan: CodeGen for X86 test included. Also one incorrect regression test fixed. Reviewers: qcolombet, chandlerc, hfinkel Reviewed By: hfinkel Subscribers: hfinkel, llvm-commits Differential Revision: http://reviews.llvm.org/D9250 llvm-svn: 236584
47 lines
1.2 KiB
LLVM
47 lines
1.2 KiB
LLVM
; RUN: llc < %s -o - -mcpu=generic -march=x86-64 -mattr=+sse4.1 | FileCheck %s -check-prefix=SSE41
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; RUN: llc < %s -o - -mcpu=generic -march=x86-64 -mattr=+avx | FileCheck %s -check-prefix=AVX
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; CHECK-LABEL: extract_i8
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define void @extract_i8(i8* nocapture %dst, <16 x i8> %foo) {
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; AVX: vpextrb
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; SSE41: pextrb
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; AVX-NOT: movb
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; SSE41-NOT: movb
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%vecext = extractelement <16 x i8> %foo, i32 15
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store i8 %vecext, i8* %dst, align 1
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ret void
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}
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; CHECK-LABEL: extract_i16
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define void @extract_i16(i16* nocapture %dst, <8 x i16> %foo) {
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; AVX: vpextrw
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; SSE41: pextrw
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; AVX-NOT: movw
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; SSE41-NOT: movw
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%vecext = extractelement <8 x i16> %foo, i32 7
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store i16 %vecext, i16* %dst, align 1
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ret void
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}
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; CHECK-LABEL: extract_i8_undef
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define void @extract_i8_undef(i8* nocapture %dst, <16 x i8> %foo) {
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; AVX-NOT: vpextrb
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; SSE41-NOT: pextrb
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; AVX-NOT: movb
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; SSE41-NOT: movb
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%vecext = extractelement <16 x i8> %foo, i32 16 ; undef
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store i8 %vecext, i8* %dst, align 1
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ret void
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}
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; CHECK-LABEL: extract_i16_undef
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define void @extract_i16_undef(i16* nocapture %dst, <8 x i16> %foo) {
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; AVX-NOT: vpextrw
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; SSE41-NOT: pextrw
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; AVX-NOT: movw
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; SSE41-NOT: movw
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%vecext = extractelement <8 x i16> %foo, i32 9 ; undef
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store i16 %vecext, i16* %dst, align 1
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ret void
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}
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