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24 lines
555 B
24 lines
555 B
4 months ago
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; RUN: opt -instcombine -S < %s | FileCheck %s
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; CHECK: test1
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define double @test1(float %a, double %b) nounwind readnone ssp uwtable {
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; CHECK-NOT: fsub
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; CHECK: fpext
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; CHECK: fadd
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%1 = fsub float -0.000000e+00, %a
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%2 = fpext float %1 to double
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%3 = fsub double %b, %2
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ret double %3
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}
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; CHECK: test2
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define double @test2(float %a, double %b) nounwind readnone ssp uwtable {
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; CHECK-NOT: fsub
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; CHECK: fpext
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; CHECK: fadd fast
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%1 = fsub float -0.000000e+00, %a
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%2 = fpext float %1 to double
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%3 = fsub fast double %b, %2
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ret double %3
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}
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