1 ; RUN: opt < %s -instsimplify -S | FileCheck %s
3 declare {i8, i1} @llvm.uadd.with.overflow.i8(i8 %a, i8 %b)
5 define i1 @test_uadd1() {
6 ; CHECK-LABEL: @test_uadd1(
7 %x = call {i8, i1} @llvm.uadd.with.overflow.i8(i8 254, i8 3)
8 %overflow = extractvalue {i8, i1} %x, 1
10 ; CHECK-NEXT: ret i1 true
13 define i8 @test_uadd2() {
14 ; CHECK-LABEL: @test_uadd2(
15 %x = call {i8, i1} @llvm.uadd.with.overflow.i8(i8 254, i8 44)
16 %result = extractvalue {i8, i1} %x, 0
18 ; CHECK-NEXT: ret i8 42
21 declare i256 @llvm.cttz.i256(i256 %src, i1 %is_zero_undef)
23 define i256 @test_cttz() {
24 ; CHECK-LABEL: @test_cttz(
25 %x = call i256 @llvm.cttz.i256(i256 10, i1 false)
27 ; CHECK-NEXT: ret i256 1
30 declare i256 @llvm.ctpop.i256(i256 %src)
32 define i256 @test_ctpop() {
33 ; CHECK-LABEL: @test_ctpop(
34 %x = call i256 @llvm.ctpop.i256(i256 10)
36 ; CHECK-NEXT: ret i256 2
39 ; Test a non-intrinsic that we know about as a library call.
40 declare float @fabs(float %x)
42 define float @test_fabs_libcall() {
43 ; CHECK-LABEL: @test_fabs_libcall(
45 %x = call float @fabs(float -42.0)
46 ; This is still a real function call, so instsimplify won't nuke it -- other
47 ; passes have to do that.
48 ; CHECK-NEXT: call float @fabs
51 ; CHECK-NEXT: ret float 4.2{{0+}}e+01
55 declare float @llvm.fabs.f32(float) nounwind readnone
56 declare float @llvm.floor.f32(float) nounwind readnone
57 declare float @llvm.ceil.f32(float) nounwind readnone
58 declare float @llvm.trunc.f32(float) nounwind readnone
59 declare float @llvm.rint.f32(float) nounwind readnone
60 declare float @llvm.nearbyint.f32(float) nounwind readnone
62 ; Test idempotent intrinsics
63 define float @test_idempotence(float %a) {
64 ; CHECK-LABEL: @test_idempotence(
68 %a0 = call float @llvm.fabs.f32(float %a)
69 %a1 = call float @llvm.fabs.f32(float %a0)
73 %b0 = call float @llvm.floor.f32(float %a)
74 %b1 = call float @llvm.floor.f32(float %b0)
78 %c0 = call float @llvm.ceil.f32(float %a)
79 %c1 = call float @llvm.ceil.f32(float %c0)
83 %d0 = call float @llvm.trunc.f32(float %a)
84 %d1 = call float @llvm.trunc.f32(float %d0)
88 %e0 = call float @llvm.rint.f32(float %a)
89 %e1 = call float @llvm.rint.f32(float %e0)
92 ; CHECK-NOT: nearbyint
93 %f0 = call float @llvm.nearbyint.f32(float %a)
94 %f1 = call float @llvm.nearbyint.f32(float %f0)
96 %r0 = fadd float %a1, %b1
97 %r1 = fadd float %r0, %c1
98 %r2 = fadd float %r1, %d1
99 %r3 = fadd float %r2, %e1
100 %r4 = fadd float %r3, %f1
105 define i8* @operator_new() {
107 %call = tail call noalias i8* @_Znwm(i64 8)
108 %cmp = icmp eq i8* %call, null
109 br i1 %cmp, label %cast.end, label %cast.notnull
111 cast.notnull: ; preds = %entry
112 %add.ptr = getelementptr inbounds i8* %call, i64 4
115 cast.end: ; preds = %cast.notnull, %entry
116 %cast.result = phi i8* [ %add.ptr, %cast.notnull ], [ null, %entry ]
119 ; CHECK-LABEL: @operator_new
120 ; CHECK: br i1 false, label %cast.end, label %cast.notnull
123 declare noalias i8* @_Znwm(i64)
125 define i8* @malloc_can_return_null() {
127 %call = tail call noalias i8* @malloc(i64 8)
128 %cmp = icmp eq i8* %call, null
129 br i1 %cmp, label %cast.end, label %cast.notnull
131 cast.notnull: ; preds = %entry
132 %add.ptr = getelementptr inbounds i8* %call, i64 4
135 cast.end: ; preds = %cast.notnull, %entry
136 %cast.result = phi i8* [ %add.ptr, %cast.notnull ], [ null, %entry ]
139 ; CHECK-LABEL: @malloc_can_return_null
140 ; CHECK: br i1 %cmp, label %cast.end, label %cast.notnull
143 declare noalias i8* @malloc(i64)