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15 lines
636 B
LLVM
15 lines
636 B
LLVM
; RUN: llc < %s -mtriple=i686-unknown-unknown -mattr=+sse4.1 | FileCheck %s
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; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+sse4.1 | FileCheck %s
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; When commuting the operands of a SSE blend, make sure that the resulting blend
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; mask can be encoded as a imm8.
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; Before, when commuting the operands to the shuffle in function @test, the backend
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; produced the following assembly:
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; pblendw $4294967103, %xmm1, %xmm0
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define <4 x i32> @test(<4 x i32> %a, <4 x i32> %b) {
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; CHECK: pblendw $63, %xmm1, %xmm0
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%shuffle = shufflevector <4 x i32> %a, <4 x i32> %b, <4 x i32> <i32 4, i32 5, i32 6, i32 3>
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ret <4 x i32> %shuffle
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}
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