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Craig Topper
912ef7aa01
Passing -mattr=-mmx needs to disable these instructions since the MMX register class won't have been set up. But we don't want -mattr=-mmx to disable SSE so we have to do it separately. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@333984 91177308-0d34-0410-b5e6-96231b3b80d8
20 lines
561 B
LLVM
20 lines
561 B
LLVM
; RUN: llc < %s -mtriple x86_64-unknown-unknown -mattr=mmx | FileCheck %s
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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; PR23246
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; We're really only interested in doing something sane with the shuffle.
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; CHECK-LABEL: test:
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; CHECK: movq2dq %mm0, %xmm0
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; CHECK-NEXT: pshufd {{.*}} xmm0 = xmm0[0,1,0,1]
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; CHECK-NEXT: retq
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define <2 x i64> @test(x86_mmx %a) #0 {
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entry:
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%b = bitcast x86_mmx %a to <1 x i64>
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%s = shufflevector <1 x i64> %b, <1 x i64> undef, <2 x i32> <i32 undef, i32 0>
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ret <2 x i64> %s
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}
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attributes #0 = { nounwind }
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