1 ; RUN: opt -S -instcombine < %s | FileCheck %s
3 define i1 @test1(float %x, float %y) nounwind {
4 %ext1 = fpext float %x to double
5 %ext2 = fpext float %y to double
6 %cmp = fcmp ogt double %ext1, %ext2
9 ; CHECK-NEXT: fcmp ogt float %x, %y
12 define i1 @test2(float %a) nounwind {
13 %ext = fpext float %a to double
14 %cmp = fcmp ogt double %ext, 1.000000e+00
16 ; CHECK-LABEL: @test2(
17 ; CHECK-NEXT: fcmp ogt float %a, 1.0
20 define i1 @test3(float %a) nounwind {
21 %ext = fpext float %a to double
22 %cmp = fcmp ogt double %ext, 0x3FF0000000000001 ; more precision than float.
24 ; CHECK-LABEL: @test3(
25 ; CHECK-NEXT: fpext float %a to double
28 define i1 @test4(float %a) nounwind {
29 %ext = fpext float %a to double
30 %cmp = fcmp ogt double %ext, 0x36A0000000000000 ; denormal in float.
32 ; CHECK-LABEL: @test4(
33 ; CHECK-NEXT: fpext float %a to double
36 define i1 @test5(float %a) nounwind {
37 %neg = fsub float -0.000000e+00, %a
38 %cmp = fcmp ogt float %neg, 1.000000e+00
40 ; CHECK-LABEL: @test5(
41 ; CHECK-NEXT: fcmp olt float %a, -1.0
44 define i1 @test6(float %x, float %y) nounwind {
45 %neg1 = fsub float -0.000000e+00, %x
46 %neg2 = fsub float -0.000000e+00, %y
47 %cmp = fcmp olt float %neg1, %neg2
49 ; CHECK-LABEL: @test6(
50 ; CHECK-NEXT: fcmp ogt float %x, %y
53 define i1 @test7(float %x) nounwind readnone ssp noredzone {
54 %ext = fpext float %x to ppc_fp128
55 %cmp = fcmp ogt ppc_fp128 %ext, 0xM00000000000000000000000000000000
57 ; CHECK-LABEL: @test7(
58 ; CHECK-NEXT: fcmp ogt float %x, 0.000000e+00
61 define float @test8(float %x) nounwind readnone optsize ssp {
62 %conv = fpext float %x to double
63 %cmp = fcmp olt double %conv, 0.000000e+00
64 %conv1 = zext i1 %cmp to i32
65 %conv2 = sitofp i32 %conv1 to float
67 ; Float comparison to zero shouldn't cast to double.
68 ; CHECK-LABEL: @test8(
69 ; CHECK-NEXT: fcmp olt float %x, 0.000000e+00
72 declare double @fabs(double) nounwind readnone
74 define i32 @test9(double %a) nounwind {
75 %call = tail call double @fabs(double %a) nounwind
76 %cmp = fcmp olt double %call, 0.000000e+00
77 %conv = zext i1 %cmp to i32
79 ; CHECK-LABEL: @test9(
84 define i32 @test10(double %a) nounwind {
85 %call = tail call double @fabs(double %a) nounwind
86 %cmp = fcmp ole double %call, 0.000000e+00
87 %conv = zext i1 %cmp to i32
89 ; CHECK-LABEL: @test10(
91 ; CHECK: fcmp oeq double %a, 0.000000e+00
94 define i32 @test11(double %a) nounwind {
95 %call = tail call double @fabs(double %a) nounwind
96 %cmp = fcmp ogt double %call, 0.000000e+00
97 %conv = zext i1 %cmp to i32
99 ; CHECK-LABEL: @test11(
101 ; CHECK: fcmp one double %a, 0.000000e+00
104 define i32 @test12(double %a) nounwind {
105 %call = tail call double @fabs(double %a) nounwind
106 %cmp = fcmp oge double %call, 0.000000e+00
107 %conv = zext i1 %cmp to i32
109 ; CHECK-LABEL: @test12(
111 ; CHECK: fcmp ord double %a, 0.000000e+00
114 define i32 @test13(double %a) nounwind {
115 %call = tail call double @fabs(double %a) nounwind
116 %cmp = fcmp une double %call, 0.000000e+00
117 %conv = zext i1 %cmp to i32
119 ; CHECK-LABEL: @test13(
121 ; CHECK: fcmp une double %a, 0.000000e+00
124 define i32 @test14(double %a) nounwind {
125 %call = tail call double @fabs(double %a) nounwind
126 %cmp = fcmp oeq double %call, 0.000000e+00
127 %conv = zext i1 %cmp to i32
129 ; CHECK-LABEL: @test14(
131 ; CHECK: fcmp oeq double %a, 0.000000e+00
134 define i32 @test15(double %a) nounwind {
135 %call = tail call double @fabs(double %a) nounwind
136 %cmp = fcmp one double %call, 0.000000e+00
137 %conv = zext i1 %cmp to i32
139 ; CHECK-LABEL: @test15(
141 ; CHECK: fcmp one double %a, 0.000000e+00
144 define i32 @test16(double %a) nounwind {
145 %call = tail call double @fabs(double %a) nounwind
146 %cmp = fcmp ueq double %call, 0.000000e+00
147 %conv = zext i1 %cmp to i32
149 ; CHECK-LABEL: @test16(
151 ; CHECK: fcmp ueq double %a, 0.000000e+00
155 define i32 @test17(double %a, double (double)* %p) nounwind {
156 %call = tail call double %p(double %a) nounwind
157 %cmp = fcmp ueq double %call, 0.000000e+00
158 %conv = zext i1 %cmp to i32