1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2; RUN: opt -S -instcombine < %s | FileCheck %s
3
4define float @test1(float %x) nounwind readnone ssp {
5; CHECK-LABEL: @test1(
6; CHECK-NEXT:    [[SQRTF:%.*]] = call float @sqrtf(float [[X:%.*]]) #3
7; CHECK-NEXT:    ret float [[SQRTF]]
8;
9  %conv = fpext float %x to double
10  %call = tail call double @sqrt(double %conv) readnone nounwind
11  %conv1 = fptrunc double %call to float
12  ret float %conv1
13}
14
15; PR8096
16
17define float @test2(float %x) nounwind readnone ssp {
18; CHECK-LABEL: @test2(
19; CHECK-NEXT:    [[SQRTF:%.*]] = call float @sqrtf(float [[X:%.*]]) #3
20; CHECK-NEXT:    ret float [[SQRTF]]
21;
22  %conv = fpext float %x to double
23  %call = tail call double @sqrt(double %conv) nounwind
24  %conv1 = fptrunc double %call to float
25  ret float %conv1
26}
27
28; rdar://9763193
29; Can't fold (fptrunc (sqrt (fpext x))) -> (sqrtf x) since there is another
30; use of sqrt result.
31
32define float @test3(float* %v) nounwind uwtable ssp {
33; CHECK-LABEL: @test3(
34; CHECK-NEXT:    [[CALL34:%.*]] = call double @sqrt(double 0x7FF8000000000000) #3
35; CHECK-NEXT:    [[CALL36:%.*]] = call i32 @foo(double [[CALL34]]) #4
36; CHECK-NEXT:    [[CONV38:%.*]] = fptrunc double [[CALL34]] to float
37; CHECK-NEXT:    ret float [[CONV38]]
38;
39  %arrayidx13 = getelementptr inbounds float, float* %v, i64 2
40  %tmp14 = load float, float* %arrayidx13
41  %mul18 = fmul float %tmp14, %tmp14
42  %add19 = fadd float undef, %mul18
43  %conv = fpext float %add19 to double
44  %call34 = call double @sqrt(double %conv) readnone
45  %call36 = call i32 (double) @foo(double %call34) nounwind
46  %conv38 = fptrunc double %call34 to float
47  ret float %conv38
48}
49
50; PR43347 - https://bugs.llvm.org/show_bug.cgi?id=43347
51
52define void @0(float %f) {
53; CHECK-LABEL: @0(
54; CHECK-NEXT:    [[SQRTF:%.*]] = call float @sqrtf(float [[F:%.*]]) #2
55; CHECK-NEXT:    ret void
56;
57  %d = fpext float %f to double
58  %r = call double @sqrt(double %d)
59  ret void
60}
61
62declare i32 @foo(double)
63declare double @sqrt(double) readnone
64