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14 lines
487 B
LLVM
14 lines
487 B
LLVM
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; RUN: llc -mtriple=arm64 -fp-contract=fast -o - %s | FileCheck %s
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; Make sure we don't try to fold an fneg into +0.0, creating an illegal constant
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; -0.0. It's also good, though not essential, that we don't resort to a litpool.
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define double @test_fms_fold(double %a, double %b) {
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; CHECK-LABEL: test_fms_fold:
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; CHECK: fmov {{d[0-9]+}}, xzr
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; CHECK: ret
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%mul = fmul double %a, 0.000000e+00
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%mul1 = fmul double %b, 0.000000e+00
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%sub = fsub double %mul, %mul1
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ret double %sub
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}
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