1; RUN: opt -S -instcombine %s -o - | FileCheck %s
2target datalayout = "e-p:32:32:32-p1:64:64:64-p2:8:8:8-p3:16:16:16-p4:16:16:16-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:32"
3
4
5define i32 @test_as0(i32 addrspace(0)* %a) {
6; CHECK-LABEL: @test_as0(
7; CHECK: %arrayidx = getelementptr i32, i32* %a, i32 1
8  %arrayidx = getelementptr i32, i32 addrspace(0)* %a, i64 1
9  %y = load i32, i32 addrspace(0)* %arrayidx, align 4
10  ret i32 %y
11}
12
13define i32 @test_as1(i32 addrspace(1)* %a) {
14; CHECK-LABEL: @test_as1(
15; CHECK: %arrayidx = getelementptr i32, i32 addrspace(1)* %a, i64 1
16  %arrayidx = getelementptr i32, i32 addrspace(1)* %a, i32 1
17  %y = load i32, i32 addrspace(1)* %arrayidx, align 4
18  ret i32 %y
19}
20
21define i32 @test_as2(i32 addrspace(2)* %a) {
22; CHECK-LABEL: @test_as2(
23; CHECK: %arrayidx = getelementptr i32, i32 addrspace(2)* %a, i8 1
24  %arrayidx = getelementptr i32, i32 addrspace(2)* %a, i32 1
25  %y = load i32, i32 addrspace(2)* %arrayidx, align 4
26  ret i32 %y
27}
28
29define i32 @test_as3(i32 addrspace(3)* %a) {
30; CHECK-LABEL: @test_as3(
31; CHECK: %arrayidx = getelementptr i32, i32 addrspace(3)* %a, i16 1
32  %arrayidx = getelementptr i32, i32 addrspace(3)* %a, i32 1
33  %y = load i32, i32 addrspace(3)* %arrayidx, align 4
34  ret i32 %y
35}
36
37define i32 @test_combine_ptrtoint(i32 addrspace(2)* %a) {
38; CHECK-LABEL: @test_combine_ptrtoint(
39; CHECK-NEXT: %y = load i32, i32 addrspace(2)* %a
40; CHECK-NEXT: ret i32 %y
41  %cast = ptrtoint i32 addrspace(2)* %a to i8
42  %castback = inttoptr i8 %cast to i32 addrspace(2)*
43  %y = load i32, i32 addrspace(2)* %castback, align 4
44  ret i32 %y
45}
46
47define i8 @test_combine_inttoptr(i8 %a) {
48; CHECK-LABEL: @test_combine_inttoptr(
49; CHECK-NEXT: ret i8 %a
50  %cast = inttoptr i8 %a to i32 addrspace(2)*
51  %castback = ptrtoint i32 addrspace(2)* %cast to i8
52  ret i8 %castback
53}
54
55define i32 @test_combine_vector_ptrtoint(<2 x i32 addrspace(2)*> %a) {
56; CHECK-LABEL: @test_combine_vector_ptrtoint(
57; CHECK-NEXT: %p = extractelement <2 x i32 addrspace(2)*> %a, i32 0
58; CHECK-NEXT: %y = load i32, i32 addrspace(2)* %p, align 4
59; CHECK-NEXT: ret i32 %y
60  %cast = ptrtoint <2 x i32 addrspace(2)*> %a to <2 x i8>
61  %castback = inttoptr <2 x i8> %cast to <2 x i32 addrspace(2)*>
62  %p = extractelement <2 x i32 addrspace(2)*> %castback, i32 0
63  %y = load i32, i32 addrspace(2)* %p, align 4
64  ret i32 %y
65}
66
67define <2 x i8> @test_combine_vector_inttoptr(<2 x i8> %a) {
68; CHECK-LABEL: @test_combine_vector_inttoptr(
69; CHECK-NEXT: ret <2 x i8> %a
70  %cast = inttoptr <2 x i8> %a to <2 x i32 addrspace(2)*>
71  %castback = ptrtoint <2 x i32 addrspace(2)*> %cast to <2 x i8>
72  ret <2 x i8> %castback
73}
74
75; Check that the GEP index is changed to the address space integer type (i64 -> i8)
76define i32 addrspace(2)* @shrink_gep_constant_index_64_as2(i32 addrspace(2)* %p) {
77; CHECK-LABEL: @shrink_gep_constant_index_64_as2(
78; CHECK-NEXT: getelementptr i32, i32 addrspace(2)* %p, i8 1
79  %ret = getelementptr i32, i32 addrspace(2)* %p, i64 1
80  ret i32 addrspace(2)* %ret
81}
82
83define i32 addrspace(2)* @shrink_gep_constant_index_32_as2(i32 addrspace(2)* %p) {
84; CHECK-LABEL: @shrink_gep_constant_index_32_as2(
85; CHECK-NEXT: getelementptr i32, i32 addrspace(2)* %p, i8 1
86  %ret = getelementptr i32, i32 addrspace(2)* %p, i32 1
87  ret i32 addrspace(2)* %ret
88}
89
90define i32 addrspace(3)* @shrink_gep_constant_index_64_as3(i32 addrspace(3)* %p) {
91; CHECK-LABEL: @shrink_gep_constant_index_64_as3(
92; CHECK-NEXT: getelementptr i32, i32 addrspace(3)* %p, i16 1
93  %ret = getelementptr i32, i32 addrspace(3)* %p, i64 1
94  ret i32 addrspace(3)* %ret
95}
96
97define i32 addrspace(2)* @shrink_gep_variable_index_64_as2(i32 addrspace(2)* %p, i64 %idx) {
98; CHECK-LABEL: @shrink_gep_variable_index_64_as2(
99; CHECK-NEXT: %1 = trunc i64 %idx to i8
100; CHECK-NEXT: getelementptr i32, i32 addrspace(2)* %p, i8 %1
101  %ret = getelementptr i32, i32 addrspace(2)* %p, i64 %idx
102  ret i32 addrspace(2)* %ret
103}
104
105define i32 addrspace(1)* @grow_gep_variable_index_8_as1(i32 addrspace(1)* %p, i8 %idx) {
106; CHECK-LABEL: @grow_gep_variable_index_8_as1(
107; CHECK-NEXT: %1 = sext i8 %idx to i64
108; CHECK-NEXT: getelementptr i32, i32 addrspace(1)* %p, i64 %1
109  %ret = getelementptr i32, i32 addrspace(1)* %p, i8 %idx
110  ret i32 addrspace(1)* %ret
111}
112
113