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