1 ; RUN: llc < %s -march=nvptx64 -mcpu=sm_30 | FileCheck %s
3 declare i32 @llvm.nvvm.shfl.down.i32(i32, i32, i32)
4 declare float @llvm.nvvm.shfl.down.f32(float, i32, i32)
5 declare i32 @llvm.nvvm.shfl.up.i32(i32, i32, i32)
6 declare float @llvm.nvvm.shfl.up.f32(float, i32, i32)
7 declare i32 @llvm.nvvm.shfl.bfly.i32(i32, i32, i32)
8 declare float @llvm.nvvm.shfl.bfly.f32(float, i32, i32)
9 declare i32 @llvm.nvvm.shfl.idx.i32(i32, i32, i32)
10 declare float @llvm.nvvm.shfl.idx.f32(float, i32, i32)
12 ; Try all four permutations of register and immediate parameters with
15 ; CHECK-LABEL: .func{{.*}}shfl.down1
16 define i32 @shfl.down1(i32 %in) {
17 ; CHECK: ld.param.u32 [[IN:%r[0-9]+]]
18 ; CHECK: shfl.down.b32 [[OUT:%r[0-9]+]], [[IN]], 1, 2;
19 ; CHECK: st.param.{{.}}32 {{.*}}, [[OUT]]
20 %val = call i32 @llvm.nvvm.shfl.down.i32(i32 %in, i32 1, i32 2)
24 ; CHECK-LABEL: .func{{.*}}shfl.down2
25 define i32 @shfl.down2(i32 %in, i32 %width) {
26 ; CHECK: ld.param.u32 [[IN1:%r[0-9]+]]
27 ; CHECK: ld.param.u32 [[IN2:%r[0-9]+]]
28 ; CHECK: shfl.down.{{.}}32 %r{{[0-9]+}}, [[IN1]], [[IN2]], 3;
29 %val = call i32 @llvm.nvvm.shfl.down.i32(i32 %in, i32 %width, i32 3)
33 ; CHECK-LABEL: .func{{.*}}shfl.down3
34 define i32 @shfl.down3(i32 %in, i32 %mask) {
35 ; CHECK: ld.param.u32 [[IN1:%r[0-9]+]]
36 ; CHECK: ld.param.u32 [[IN2:%r[0-9]+]]
37 ; CHECK: shfl.down.{{.}}32 %r{{[0-9]+}}, [[IN1]], 4, [[IN2]];
38 %val = call i32 @llvm.nvvm.shfl.down.i32(i32 %in, i32 4, i32 %mask)
42 ; CHECK-LABEL: .func{{.*}}shfl.down4
43 define i32 @shfl.down4(i32 %in, i32 %width, i32 %mask) {
44 ; CHECK: ld.param.u32 [[IN1:%r[0-9]+]]
45 ; CHECK: ld.param.u32 [[IN2:%r[0-9]+]]
46 ; CHECK: ld.param.u32 [[IN3:%r[0-9]+]]
47 ; CHECK: shfl.down.{{.}}32 %r{{[0-9]+}}, [[IN1]], [[IN2]], [[IN3]];
48 %val = call i32 @llvm.nvvm.shfl.down.i32(i32 %in, i32 %width, i32 %mask)
52 ; Try shfl.down with floating-point params.
53 ; CHECK-LABEL: .func{{.*}}shfl.down.float
54 define float @shfl.down.float(float %in) {
55 ; CHECK: ld.param.f32 [[IN:%f[0-9]+]]
56 ; CHECK: shfl.down.b32 [[OUT:%f[0-9]+]], [[IN]], 5, 6;
57 ; CHECK: st.param.{{.}}32 {{.*}}, [[OUT]]
58 %out = call float @llvm.nvvm.shfl.down.f32(float %in, i32 5, i32 6)
62 ; Try the rest of the shfl modes. Hopefully they're declared in such a way
63 ; that if shfl.down works correctly, they also work correctly.
64 define void @shfl.rest(i32 %in_i32, float %in_float, i32* %out_i32, float* %out_float) {
65 ; CHECK: shfl.up.b32 %r{{[0-9]+}}, %r{{[0-9]+}}, 1, 2;
66 %up_i32 = call i32 @llvm.nvvm.shfl.up.i32(i32 %in_i32, i32 1, i32 2)
67 store i32 %up_i32, i32* %out_i32
69 ; CHECK: shfl.up.b32 %f{{[0-9]+}}, %f{{[0-9]+}}, 3, 4;
70 %up_float = call float @llvm.nvvm.shfl.up.f32(float %in_float, i32 3, i32 4)
71 store float %up_float, float* %out_float
73 ; CHECK: shfl.bfly.b32 %r{{[0-9]+}}, %r{{[0-9]+}}, 5, 6;
74 %bfly_i32 = call i32 @llvm.nvvm.shfl.bfly.i32(i32 %in_i32, i32 5, i32 6)
75 store i32 %bfly_i32, i32* %out_i32
77 ; CHECK: shfl.bfly.b32 %f{{[0-9]+}}, %f{{[0-9]+}}, 7, 8;
78 %bfly_float = call float @llvm.nvvm.shfl.bfly.f32(float %in_float, i32 7, i32 8)
79 store float %bfly_float, float* %out_float
81 ; CHECK: shfl.idx.b32 %r{{[0-9]+}}, %r{{[0-9]+}}, 9, 10;
82 %idx_i32 = call i32 @llvm.nvvm.shfl.idx.i32(i32 %in_i32, i32 9, i32 10)
83 store i32 %idx_i32, i32* %out_i32
85 ; CHECK: shfl.idx.b32 %f{{[0-9]+}}, %f{{[0-9]+}}, 11, 12;
86 %idx_float = call float @llvm.nvvm.shfl.idx.f32(float %in_float, i32 11, i32 12)
87 store float %idx_float, float* %out_float