1 ; RUN: llc < %s -march=nvptx64 -mcpu=sm_35 | FileCheck %s
3 ; Check that invariant loads from the global addrspace are lowered to
6 ; CHECK-LABEL: @ld_global
7 define i32 @ld_global(i32 addrspace(1)* %ptr) {
8 ; CHECK: ld.global.nc.{{[a-z]}}32
9 %a = load i32, i32 addrspace(1)* %ptr, !invariant.load !0
13 ; CHECK-LABEL: @ld_global_v2f16
14 define half @ld_global_v2f16(<2 x half> addrspace(1)* %ptr) {
15 ; Load of v2f16 is weird. We consider it to be a legal type, which happens to be
16 ; loaded/stored as a 32-bit scalar.
17 ; CHECK: ld.global.nc.b32
18 %a = load <2 x half>, <2 x half> addrspace(1)* %ptr, !invariant.load !0
19 %v1 = extractelement <2 x half> %a, i32 0
20 %v2 = extractelement <2 x half> %a, i32 1
21 %sum = fadd half %v1, %v2
25 ; CHECK-LABEL: @ld_global_v4f16
26 define half @ld_global_v4f16(<4 x half> addrspace(1)* %ptr) {
27 ; Larger f16 vectors may be split into individual f16 elements and multiple
28 ; loads/stores may be vectorized using f16 element type. Practically it's
29 ; limited to v4 variant only.
30 ; CHECK: ld.global.nc.v4.b16
31 %a = load <4 x half>, <4 x half> addrspace(1)* %ptr, !invariant.load !0
32 %v1 = extractelement <4 x half> %a, i32 0
33 %v2 = extractelement <4 x half> %a, i32 1
34 %v3 = extractelement <4 x half> %a, i32 2
35 %v4 = extractelement <4 x half> %a, i32 3
36 %sum1 = fadd half %v1, %v2
37 %sum2 = fadd half %v3, %v4
38 %sum = fadd half %sum1, %sum2
42 ; CHECK-LABEL: @ld_global_v8f16
43 define half @ld_global_v8f16(<8 x half> addrspace(1)* %ptr) {
44 ; Larger vectors are, again, loaded as v4i32. PTX has no v8 variants of loads/stores,
45 ; so load/store vectorizer has to convert v8f16 -> v4 x v2f16.
46 ; CHECK: ld.global.nc.v4.b32
47 %a = load <8 x half>, <8 x half> addrspace(1)* %ptr, !invariant.load !0
48 %v1 = extractelement <8 x half> %a, i32 0
49 %v2 = extractelement <8 x half> %a, i32 2
50 %v3 = extractelement <8 x half> %a, i32 4
51 %v4 = extractelement <8 x half> %a, i32 6
52 %sum1 = fadd half %v1, %v2
53 %sum2 = fadd half %v3, %v4
54 %sum = fadd half %sum1, %sum2
58 ; CHECK-LABEL: @ld_global_v2i32
59 define i32 @ld_global_v2i32(<2 x i32> addrspace(1)* %ptr) {
60 ; CHECK: ld.global.nc.v2.{{[a-z]}}32
61 %a = load <2 x i32>, <2 x i32> addrspace(1)* %ptr, !invariant.load !0
62 %v1 = extractelement <2 x i32> %a, i32 0
63 %v2 = extractelement <2 x i32> %a, i32 1
64 %sum = add i32 %v1, %v2
68 ; CHECK-LABEL: @ld_global_v4i32
69 define i32 @ld_global_v4i32(<4 x i32> addrspace(1)* %ptr) {
70 ; CHECK: ld.global.nc.v4.{{[a-z]}}32
71 %a = load <4 x i32>, <4 x i32> addrspace(1)* %ptr, !invariant.load !0
72 %v1 = extractelement <4 x i32> %a, i32 0
73 %v2 = extractelement <4 x i32> %a, i32 1
74 %v3 = extractelement <4 x i32> %a, i32 2
75 %v4 = extractelement <4 x i32> %a, i32 3
76 %sum1 = add i32 %v1, %v2
77 %sum2 = add i32 %v3, %v4
78 %sum3 = add i32 %sum1, %sum2
82 ; CHECK-LABEL: @ld_not_invariant
83 define i32 @ld_not_invariant(i32 addrspace(1)* %ptr) {
84 ; CHECK: ld.global.{{[a-z]}}32
85 %a = load i32, i32 addrspace(1)* %ptr
89 ; CHECK-LABEL: @ld_not_global_addrspace
90 define i32 @ld_not_global_addrspace(i32 addrspace(0)* %ptr) {
91 ; CHECK: ld.{{[a-z]}}32
92 %a = load i32, i32 addrspace(0)* %ptr