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Under -enable-unsafe-fp-math, SELECT_CC lowering in AArch64 transforms floating point comparisons of the form "a == 0.0 ? 0.0 : x" to "a == 0.0 ? a : x". But it incorrectly assumes that 'x' and 'a' have the same type which can lead to a wrong CSEL node that crashes later due to nonsensical copies. Differential Revision: https://reviews.llvm.org/D26394 llvm-svn: 286231
16 lines
563 B
LLVM
16 lines
563 B
LLVM
; RUN: llc -mtriple=aarch64-none-linux-gnu -enable-unsafe-fp-math < %s
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; There is no invocation to FileCheck as this
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; caused a crash in "Post-RA pseudo instruction expansion"
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define double @foo(float *%user, float %t17) {
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%t16 = load float, float* %user, align 8
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%conv = fpext float %t16 to double
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%cmp26 = fcmp fast oeq float %t17, 0.000000e+00
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%div = fdiv fast float %t16, %t17
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%div.op = fmul fast float %div, 1.000000e+02
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%t18 = fpext float %div.op to double
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%conv31 = select i1 %cmp26, double 0.000000e+00, double %t18
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ret double %conv31
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}
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