1 ; RUN: llc -mtriple=amdgcn -verify-machineinstrs < %s | FileCheck -check-prefix=SI -check-prefix=FUNC %s
3 declare i32 @llvm.amdgcn.workitem.id.x() readnone
5 ; This is broken because the low half of the 64-bit add remains on the
6 ; SALU, but the upper half does not. The addc expects the carry bit
7 ; set in vcc, which is undefined since the low scalar half add sets
10 ; FIXME: SIShrinkInstructions should force immediate fold.
12 ; FUNC-LABEL: {{^}}imp_def_vcc_split_i64_add_0:
13 ; SI: v_mov_b32_e32 [[V_VAL:v[0-9]+]], s
14 ; SI: v_add_i32_e32 v{{[0-9]+}}, vcc, 0x18f, [[V_VAL]]
15 ; SI: v_addc_u32_e32 v{{[0-9]+}}, vcc, 0, v{{[0-9]+}}, vcc
16 define amdgpu_kernel void @imp_def_vcc_split_i64_add_0(ptr addrspace(1) %out, ptr addrspace(1) %in, i32 %s.val) {
17 %v.val = load volatile i32, ptr addrspace(1) %in
18 %vec.0 = insertelement <2 x i32> undef, i32 %s.val, i32 0
19 %vec.1 = insertelement <2 x i32> %vec.0, i32 %v.val, i32 1
20 %bc = bitcast <2 x i32> %vec.1 to i64
21 %add = add i64 %bc, 399
22 store i64 %add, ptr addrspace(1) %out, align 8
26 ; FUNC-LABEL: {{^}}s_imp_def_vcc_split_i64_add_0:
27 ; SI: s_add_u32 {{s[0-9]+}}, {{s[0-9]+}}, 0x18f
28 ; SI: s_addc_u32 {{s[0-9]+}}, 0xf423f, 0
29 define amdgpu_kernel void @s_imp_def_vcc_split_i64_add_0(ptr addrspace(1) %out, i32 %val) {
30 %vec.0 = insertelement <2 x i32> undef, i32 %val, i32 0
31 %vec.1 = insertelement <2 x i32> %vec.0, i32 999999, i32 1
32 %bc = bitcast <2 x i32> %vec.1 to i64
33 %add = add i64 %bc, 399
34 store i64 %add, ptr addrspace(1) %out, align 8
38 ; FUNC-LABEL: {{^}}imp_def_vcc_split_i64_add_1:
41 define amdgpu_kernel void @imp_def_vcc_split_i64_add_1(ptr addrspace(1) %out, ptr addrspace(1) %in, i32 %val0, i64 %val1) {
42 %v.val = load volatile i32, ptr addrspace(1) %in
43 %vec.0 = insertelement <2 x i32> undef, i32 %val0, i32 0
44 %vec.1 = insertelement <2 x i32> %vec.0, i32 %v.val, i32 1
45 %bc = bitcast <2 x i32> %vec.1 to i64
46 %add = add i64 %bc, %val1
47 store i64 %add, ptr addrspace(1) %out, align 8
51 ; FUNC-LABEL: {{^}}s_imp_def_vcc_split_i64_add_1:
52 ; SI: s_add_u32 {{s[0-9]+}}, {{s[0-9]+}}, {{s[0-9]+}}
53 ; SI: s_addc_u32 {{s[0-9]+}}, 0x1869f, {{s[0-9]+}}
54 define amdgpu_kernel void @s_imp_def_vcc_split_i64_add_1(ptr addrspace(1) %out, i32 %val0, i64 %val1) {
55 %vec.0 = insertelement <2 x i32> undef, i32 %val0, i32 0
56 %vec.1 = insertelement <2 x i32> %vec.0, i32 99999, i32 1
57 %bc = bitcast <2 x i32> %vec.1 to i64
58 %add = add i64 %bc, %val1
59 store i64 %add, ptr addrspace(1) %out, align 8
63 ; Doesn't use constants
64 ; FUNC-LABEL: {{^}}imp_def_vcc_split_i64_add_2:
65 ; SI: v_add_i32_e32 {{v[0-9]+}}, vcc, {{s[0-9]+}}, {{v[0-9]+}}
66 ; SI: v_addc_u32_e32 {{v[0-9]+}}, vcc, {{v[0-9]+}}, {{v[0-9]+}}, vcc
67 define amdgpu_kernel void @imp_def_vcc_split_i64_add_2(ptr addrspace(1) %out, ptr addrspace(1) %in, i32 %val0, i64 %val1) {
68 %tid = call i32 @llvm.amdgcn.workitem.id.x() readnone
69 %gep = getelementptr i32, ptr addrspace(1) %in, i32 %tid
70 %load = load i32, ptr addrspace(1) %gep
71 %vec.0 = insertelement <2 x i32> undef, i32 %val0, i32 0
72 %vec.1 = insertelement <2 x i32> %vec.0, i32 %load, i32 1
73 %bc = bitcast <2 x i32> %vec.1 to i64
74 %add = add i64 %bc, %val1
75 store i64 %add, ptr addrspace(1) %out, align 8