1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2; Test some floating point casting cases
3; RUN: opt < %s -instcombine -S | FileCheck %s
4
5define i8 @test1() {
6; CHECK-LABEL: @test1(
7; CHECK-NEXT:    ret i8 -1
8;
9  %x = fptoui float 2.550000e+02 to i8
10  ret i8 %x
11}
12
13define i8 @test2() {
14; CHECK-LABEL: @test2(
15; CHECK-NEXT:    ret i8 -1
16;
17  %x = fptosi float -1.000000e+00 to i8
18  ret i8 %x
19}
20
21define half @test3(float %a) {
22; CHECK-LABEL: @test3(
23; CHECK-NEXT:    [[TMP1:%.*]] = fptrunc float [[A:%.*]] to half
24; CHECK-NEXT:    [[C:%.*]] = call half @llvm.fabs.f16(half [[TMP1]])
25; CHECK-NEXT:    ret half [[C]]
26;
27  %b = call float @llvm.fabs.f32(float %a)
28  %c = fptrunc float %b to half
29  ret half %c
30}
31
32define half @test4(float %a) {
33; CHECK-LABEL: @test4(
34; CHECK-NEXT:    [[TMP1:%.*]] = fptrunc float [[A:%.*]] to half
35; CHECK-NEXT:    [[C:%.*]] = fsub half 0xH8000, [[TMP1]]
36; CHECK-NEXT:    ret half [[C]]
37;
38  %b = fsub float -0.0, %a
39  %c = fptrunc float %b to half
40  ret half %c
41}
42
43define half @test4-fast(float %a) {
44; CHECK-LABEL: @test4-fast(
45; CHECK-NEXT:    [[TMP1:%.*]] = fptrunc float [[A:%.*]] to half
46; CHECK-NEXT:    [[C:%.*]] = fsub fast half 0xH8000, [[TMP1]]
47; CHECK-NEXT:    ret half [[C]]
48;
49  %b = fsub fast float -0.0, %a
50  %c = fptrunc float %b to half
51  ret half %c
52}
53
54define half @test5(float %a, float %b, float %c) {
55; CHECK-LABEL: @test5(
56; CHECK-NEXT:    [[D:%.*]] = fcmp ogt float [[A:%.*]], [[B:%.*]]
57; CHECK-NEXT:    [[E:%.*]] = select i1 [[D]], float [[C:%.*]], float 1.000000e+00
58; CHECK-NEXT:    [[F:%.*]] = fptrunc float [[E]] to half
59; CHECK-NEXT:    ret half [[F]]
60;
61  %d = fcmp ogt float %a, %b
62  %e = select i1 %d, float %c, float 1.0
63  %f = fptrunc float %e to half
64  ret half %f
65}
66
67declare float @llvm.fabs.f32(float) nounwind readonly
68
69define <1 x float> @test6(<1 x double> %V) {
70; CHECK-LABEL: @test6(
71; CHECK-NEXT:    [[FREM:%.*]] = frem <1 x double> [[V:%.*]], [[V]]
72; CHECK-NEXT:    [[TRUNC:%.*]] = fptrunc <1 x double> [[FREM]] to <1 x float>
73; CHECK-NEXT:    ret <1 x float> [[TRUNC]]
74;
75  %frem = frem <1 x double> %V, %V
76  %trunc = fptrunc <1 x double> %frem to <1 x float>
77  ret <1 x float> %trunc
78}
79
80define float @test7(double %V) {
81; CHECK-LABEL: @test7(
82; CHECK-NEXT:    [[FREM:%.*]] = frem double [[V:%.*]], 1.000000e+00
83; CHECK-NEXT:    [[TRUNC:%.*]] = fptrunc double [[FREM]] to float
84; CHECK-NEXT:    ret float [[TRUNC]]
85;
86  %frem = frem double %V, 1.000000e+00
87  %trunc = fptrunc double %frem to float
88  ret float %trunc
89}
90
91define float @test8(float %V) {
92; CHECK-LABEL: @test8(
93; CHECK-NEXT:    [[FEXT:%.*]] = fpext float [[V:%.*]] to double
94; CHECK-NEXT:    [[FREM:%.*]] = frem double [[FEXT]], 1.000000e-01
95; CHECK-NEXT:    [[TRUNC:%.*]] = fptrunc double [[FREM]] to float
96; CHECK-NEXT:    ret float [[TRUNC]]
97;
98  %fext = fpext float %V to double
99  %frem = frem double %fext, 1.000000e-01
100  %trunc = fptrunc double %frem to float
101  ret float %trunc
102}
103
104define half @test_fptrunc_fptrunc(double %V) {
105; CHECK-LABEL: @test_fptrunc_fptrunc(
106; CHECK-NEXT:    [[T1:%.*]] = fptrunc double [[V:%.*]] to float
107; CHECK-NEXT:    [[T2:%.*]] = fptrunc float [[T1]] to half
108; CHECK-NEXT:    ret half [[T2]]
109;
110  %t1 = fptrunc double %V to float
111  %t2 = fptrunc float %t1 to half
112  ret half %t2
113}
114
115