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
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.
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.
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
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
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 ; Can't convert ppc_fp128
59 ; CHECK-NEXT: fpext float %x to ppc_fp128
62 define float @test8(float %x) nounwind readnone optsize ssp {
63 %conv = fpext float %x to double
64 %cmp = fcmp olt double %conv, 0.000000e+00
65 %conv1 = zext i1 %cmp to i32
66 %conv2 = sitofp i32 %conv1 to float
68 ; Float comparison to zero shouldn't cast to double.
70 ; CHECK-NEXT: fcmp olt float %x, 0.000000e+00
73 declare double @fabs(double) nounwind readnone
75 define i32 @test9(double %a) nounwind {
76 %call = tail call double @fabs(double %a) nounwind
77 %cmp = fcmp olt double %call, 0.000000e+00
78 %conv = zext i1 %cmp to i32
85 define i32 @test10(double %a) nounwind {
86 %call = tail call double @fabs(double %a) nounwind
87 %cmp = fcmp ole double %call, 0.000000e+00
88 %conv = zext i1 %cmp to i32
92 ; CHECK: fcmp oeq double %a, 0.000000e+00
95 define i32 @test11(double %a) nounwind {
96 %call = tail call double @fabs(double %a) nounwind
97 %cmp = fcmp ogt double %call, 0.000000e+00
98 %conv = zext i1 %cmp to i32
102 ; CHECK: fcmp one double %a, 0.000000e+00
105 define i32 @test12(double %a) nounwind {
106 %call = tail call double @fabs(double %a) nounwind
107 %cmp = fcmp oge double %call, 0.000000e+00
108 %conv = zext i1 %cmp to i32
112 ; CHECK: fcmp ord double %a, 0.000000e+00
115 define i32 @test13(double %a) nounwind {
116 %call = tail call double @fabs(double %a) nounwind
117 %cmp = fcmp une double %call, 0.000000e+00
118 %conv = zext i1 %cmp to i32
122 ; CHECK: fcmp une double %a, 0.000000e+00
125 define i32 @test14(double %a) nounwind {
126 %call = tail call double @fabs(double %a) nounwind
127 %cmp = fcmp oeq double %call, 0.000000e+00
128 %conv = zext i1 %cmp to i32
132 ; CHECK: fcmp oeq double %a, 0.000000e+00
135 define i32 @test15(double %a) nounwind {
136 %call = tail call double @fabs(double %a) nounwind
137 %cmp = fcmp one double %call, 0.000000e+00
138 %conv = zext i1 %cmp to i32
142 ; CHECK: fcmp one double %a, 0.000000e+00
145 define i32 @test16(double %a) nounwind {
146 %call = tail call double @fabs(double %a) nounwind
147 %cmp = fcmp ueq double %call, 0.000000e+00
148 %conv = zext i1 %cmp to i32
152 ; CHECK: fcmp ueq double %a, 0.000000e+00