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cab98e3168
DAGCombine from making an illegal transformation of bitcast of a scalar to a vector into a scalar_to_vector. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119819 91177308-0d34-0410-b5e6-96231b3b80d8
28 lines
702 B
LLVM
28 lines
702 B
LLVM
; RUN: llc < %s -march=x86-64 -mattr=+sse42 -disable-mmx | FileCheck %s
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define float @extractFloat1() nounwind {
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entry:
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; CHECK: 1065353216
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%tmp0 = bitcast <1 x double> <double 0x000000003F800000> to <2 x float>
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%tmp1 = extractelement <2 x float> %tmp0, i32 0
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ret float %tmp1
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}
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define float @extractFloat2() nounwind {
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entry:
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; CHECK: pxor %xmm0, %xmm0
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%tmp4 = bitcast <1 x double> <double 0x000000003F800000> to <2 x float>
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%tmp5 = extractelement <2 x float> %tmp4, i32 1
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ret float %tmp5
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}
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define i32 @extractInt2() nounwind {
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entry:
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; CHECK: xorl %eax, %eax
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%tmp4 = bitcast <1 x i64> <i64 256> to <2 x i32>
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%tmp5 = extractelement <2 x i32> %tmp4, i32 1
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ret i32 %tmp5
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}
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