1 ; RUN: opt < %s -instcombine -S | FileCheck %s
4 define i1 @test1(double %X, double %Y) {
5 %tmp9 = fcmp ord double %X, 0.000000e+00
6 %tmp13 = fcmp ord double %Y, 0.000000e+00
7 %bothcond = and i1 %tmp13, %tmp9
9 ; CHECK: fcmp ord double %Y, %X
12 define i1 @test2(i1 %X, i1 %Y) {
16 ; CHECK-LABEL: @test2(
17 ; CHECK-NEXT: and i1 %X, %Y
21 define i32 @test3(i32 %X, i32 %Y) {
25 ; CHECK-LABEL: @test3(
26 ; CHECK-NEXT: and i32 %X, %Y
30 define i1 @test4(i32 %X) {
31 %a = icmp ult i32 %X, 31
32 %b = icmp slt i32 %X, 0
35 ; CHECK-LABEL: @test4(
36 ; CHECK-NEXT: ret i1 false
39 ; Make sure we don't go into an infinite loop with this test
40 define <4 x i32> @test5(<4 x i32> %A) {
41 %1 = xor <4 x i32> %A, <i32 1, i32 2, i32 3, i32 4>
42 %2 = and <4 x i32> <i32 1, i32 2, i32 3, i32 4>, %1
46 ; Check that we combine "if x!=0 && x!=-1" into "if x+1u>1"
47 define i32 @test6(i64 %x) nounwind {
48 ; CHECK-LABEL: @test6(
49 ; CHECK-NEXT: add i64 %x, 1
50 ; CHECK-NEXT: icmp ugt i64 %x.off, 1
51 %cmp1 = icmp ne i64 %x, -1
52 %not.cmp = icmp ne i64 %x, 0
53 %.cmp1 = and i1 %cmp1, %not.cmp
54 %land.ext = zext i1 %.cmp1 to i32
58 define i1 @test7(i32 %i, i1 %b) {
59 ; CHECK-LABEL: @test7(
60 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 %i, 0
61 ; CHECK-NEXT: [[AND:%.*]] = and i1 [[CMP]], %b
62 ; CHECK-NEXT: ret i1 [[AND]]
63 %cmp1 = icmp slt i32 %i, 1
64 %cmp2 = icmp sgt i32 %i, -1
65 %and1 = and i1 %cmp1, %b
66 %and2 = and i1 %and1, %cmp2
70 define i1 @test8(i32 %i) {
71 ; CHECK-LABEL: @test8(
72 ; CHECK-NEXT: [[DEC:%.*]] = add i32 %i, -1
73 ; CHECK-NEXT: [[CMP:%.*]] = icmp ult i32 [[DEC]], 13
74 ; CHECK-NEXT: ret i1 [[CMP]]
75 %cmp1 = icmp ne i32 %i, 0
76 %cmp2 = icmp ult i32 %i, 14
77 %cond = and i1 %cmp1, %cmp2
81 ; combine -x & 1 into x & 1
82 define i64 @test9(i64 %x) {
83 ; CHECK-LABEL: @test9(
84 ; CHECK-NOT: %sub = sub nsw i64 0, %x
85 ; CHECK-NOT: %and = and i64 %sub, 1
86 ; CHECK-NEXT: %and = and i64 %x, 1
87 ; CHECK-NEXT: ret i64 %and
88 %sub = sub nsw i64 0, %x
89 %and = and i64 %sub, 1
93 define i64 @test10(i64 %x) {
94 ; CHECK-LABEL: @test10(
95 ; CHECK-NOT: %sub = sub nsw i64 0, %x
96 ; CHECK-NEXT: %and = and i64 %x, 1
97 ; CHECK-NOT: %add = add i64 %sub, %and
98 ; CHECK-NEXT: %add = sub i64 %and, %x
99 ; CHECK-NEXT: ret i64 %add
100 %sub = sub nsw i64 0, %x
101 %and = and i64 %sub, 1
102 %add = add i64 %sub, %and
106 define i64 @fabs_double(double %x) {
107 ; CHECK-LABEL: @fabs_double(
108 ; CHECK-NEXT: %fabs = call double @llvm.fabs.f64(double %x)
109 ; CHECK-NEXT: %and = bitcast double %fabs to i64
110 ; CHECK-NEXT: ret i64 %and
111 %bc = bitcast double %x to i64
112 %and = and i64 %bc, 9223372036854775807
116 define i64 @fabs_double_swap(double %x) {
117 ; CHECK-LABEL: @fabs_double_swap(
118 ; CHECK-NEXT: %fabs = call double @llvm.fabs.f64(double %x)
119 ; CHECK-NEXT: %and = bitcast double %fabs to i64
120 ; CHECK-NEXT: ret i64 %and
121 %bc = bitcast double %x to i64
122 %and = and i64 9223372036854775807, %bc
126 define i32 @fabs_float(float %x) {
127 ; CHECK-LABEL: @fabs_float(
128 ; CHECK-NEXT: %fabs = call float @llvm.fabs.f32(float %x)
129 ; CHECK-NEXT: %and = bitcast float %fabs to i32
130 ; CHECK-NEXT: ret i32 %and
131 %bc = bitcast float %x to i32
132 %and = and i32 %bc, 2147483647
136 ; Make sure that only a bitcast is transformed.
138 define i64 @fabs_double_not_bitcast(double %x) {
139 ; CHECK-LABEL: @fabs_double_not_bitcast(
140 ; CHECK-NEXT: %bc = fptoui double %x to i64
141 ; CHECK-NEXT: %and = and i64 %bc, 9223372036854775807
142 ; CHECK-NEXT: ret i64 %and
143 %bc = fptoui double %x to i64
144 %and = and i64 %bc, 9223372036854775807