39 lines
966 B
LLVM
39 lines
966 B
LLVM
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; RUN: llc -march=hexagon -mcpu=hexagonv5 < %s | FileCheck %s
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; Optimize fneg to togglebit in V5.
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define float @foo(float %x) nounwind {
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entry:
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; CHECK-LABEL: foo:
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; CHECK: r{{[0-9]+}} = togglebit(r{{[0-9]+}},#31)
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%x.addr = alloca float, align 4
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store float %x, ptr %x.addr, align 4
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%0 = load float, ptr %x.addr, align 4
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%sub = fsub float -0.000000e+00, %0
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ret float %sub
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}
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define float @bar(float %x) nounwind {
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entry:
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; CHECK-LABEL: bar:
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; CHECK: r{{[0-9]+}} = togglebit(r{{[0-9]+}},#31)
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%sub = fsub float -0.000000e+00, %x
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ret float %sub
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}
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define float @baz0(float %x) nounwind {
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entry:
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; CHECK-LABEL: baz0:
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; CHECK: r{{[0-9]+}} = togglebit(r{{[0-9]+}},#31)
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%conv1 = fmul nnan float %x, -1.000000e+00
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ret float %conv1
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}
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define float @baz1(float %x) nounwind {
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entry:
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%not.nan = fadd nnan float %x, %x
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; CHECK-LABEL: baz1:
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; CHECK: r{{[0-9]+}} = togglebit(r{{[0-9]+}},#31)
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%conv1 = fmul float %not.nan, -1.000000e+00
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ret float %conv1
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}
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