32 lines
896 B
LLVM
32 lines
896 B
LLVM
; RUN: opt < %s -instcombine -S | FileCheck %s
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declare double @acos(double)
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; Check that functions without any function attributes are simplified.
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define double @test_simplify_acos() {
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; CHECK-LABEL: @test_simplify_acos
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%pi = call double @acos(double -1.000000e+00)
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; CHECK-NOT: call double @acos
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; CHECK: ret double 0x400921FB54442D18
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ret double %pi
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}
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; Check that we don't constant fold builtin functions.
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define double @test_acos_nobuiltin() {
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; CHECK-LABEL: @test_acos_nobuiltin
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%pi = call double @acos(double -1.000000e+00) nobuiltin
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; CHECK: call double @acos(double -1.000000e+00)
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ret double %pi
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}
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; Check that we don't constant fold strictfp results that require rounding.
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define double @test_acos_strictfp() {
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; CHECK-LABEL: @test_acos_strictfp
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%pi = call double @acos(double -1.000000e+00) strictfp
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; CHECK: call double @acos(double -1.000000e+00)
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ret double %pi
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}
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