1 ; RUN: opt < %s -passes=instcombine -S | FileCheck %s
3 declare double @acos(double) willreturn
5 ; Check that functions without any function attributes are simplified.
7 define double @test_simplify_acos() {
8 ; CHECK-LABEL: @test_simplify_acos
9 %pi = call double @acos(double -1.000000e+00)
10 ; CHECK-NOT: call double @acos
11 ; CHECK: ret double 0x400921FB54442D18
15 ; Check that we don't constant fold builtin functions.
17 define double @test_acos_nobuiltin() {
18 ; CHECK-LABEL: @test_acos_nobuiltin
19 %pi = call double @acos(double -1.000000e+00) nobuiltin
20 ; CHECK: call double @acos(double -1.000000e+00)
24 ; Check that we don't constant fold strictfp results that require rounding.
26 define double @test_acos_strictfp() strictfp {
27 ; CHECK-LABEL: @test_acos_strictfp
28 %pi = call double @acos(double -1.000000e+00) strictfp
29 ; CHECK: call double @acos(double -1.000000e+00)