20 lines
563 B
LLVM
20 lines
563 B
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=i686-- | FileCheck %s
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declare i1 @llvm.isunordered.f64(double)
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define i1 @test_isnan(double %X) {
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; CHECK-LABEL: test_isnan:
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; CHECK: # %bb.0:
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; CHECK-NEXT: fldl {{[0-9]+}}(%esp)
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; CHECK-NEXT: fucomp %st(0)
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; CHECK-NEXT: fnstsw %ax
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; CHECK-NEXT: # kill: def $ah killed $ah killed $ax
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; CHECK-NEXT: sahf
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; CHECK-NEXT: setp %al
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; CHECK-NEXT: retl
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%R = fcmp uno double %X, %X ; <i1> [#uses=1]
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ret i1 %R
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}
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