91 lines
3.5 KiB
LLVM
91 lines
3.5 KiB
LLVM
|
; RUN: llc < %s -march=nvptx64 -mcpu=sm_30 | FileCheck %s
|
||
|
|
|
||
|
|
declare i32 @llvm.nvvm.shfl.down.i32(i32, i32, i32)
|
||
|
|
declare float @llvm.nvvm.shfl.down.f32(float, i32, i32)
|
||
|
|
declare i32 @llvm.nvvm.shfl.up.i32(i32, i32, i32)
|
||
|
|
declare float @llvm.nvvm.shfl.up.f32(float, i32, i32)
|
||
|
|
declare i32 @llvm.nvvm.shfl.bfly.i32(i32, i32, i32)
|
||
|
|
declare float @llvm.nvvm.shfl.bfly.f32(float, i32, i32)
|
||
|
|
declare i32 @llvm.nvvm.shfl.idx.i32(i32, i32, i32)
|
||
|
|
declare float @llvm.nvvm.shfl.idx.f32(float, i32, i32)
|
||
|
|
|
||
|
|
; Try all four permutations of register and immediate parameters with
|
||
|
|
; shfl.down.
|
||
|
|
|
||
|
|
; CHECK-LABEL: .func{{.*}}shfl.down1
|
||
|
|
define i32 @shfl.down1(i32 %in) {
|
||
|
|
; CHECK: ld.param.u32 [[IN:%r[0-9]+]]
|
||
|
|
; CHECK: shfl.down.b32 [[OUT:%r[0-9]+]], [[IN]], 1, 2;
|
||
|
|
; CHECK: st.param.{{.}}32 {{.*}}, [[OUT]]
|
||
|
|
%val = call i32 @llvm.nvvm.shfl.down.i32(i32 %in, i32 1, i32 2)
|
||
|
|
ret i32 %val
|
||
|
|
}
|
||
|
|
|
||
|
|
; CHECK-LABEL: .func{{.*}}shfl.down2
|
||
|
|
define i32 @shfl.down2(i32 %in, i32 %width) {
|
||
|
|
; CHECK: ld.param.u32 [[IN1:%r[0-9]+]]
|
||
|
|
; CHECK: ld.param.u32 [[IN2:%r[0-9]+]]
|
||
|
|
; CHECK: shfl.down.{{.}}32 %r{{[0-9]+}}, [[IN1]], [[IN2]], 3;
|
||
|
|
%val = call i32 @llvm.nvvm.shfl.down.i32(i32 %in, i32 %width, i32 3)
|
||
|
|
ret i32 %val
|
||
|
|
}
|
||
|
|
|
||
|
|
; CHECK-LABEL: .func{{.*}}shfl.down3
|
||
|
|
define i32 @shfl.down3(i32 %in, i32 %mask) {
|
||
|
|
; CHECK: ld.param.u32 [[IN1:%r[0-9]+]]
|
||
|
|
; CHECK: ld.param.u32 [[IN2:%r[0-9]+]]
|
||
|
|
; CHECK: shfl.down.{{.}}32 %r{{[0-9]+}}, [[IN1]], 4, [[IN2]];
|
||
|
|
%val = call i32 @llvm.nvvm.shfl.down.i32(i32 %in, i32 4, i32 %mask)
|
||
|
|
ret i32 %val
|
||
|
|
}
|
||
|
|
|
||
|
|
; CHECK-LABEL: .func{{.*}}shfl.down4
|
||
|
|
define i32 @shfl.down4(i32 %in, i32 %width, i32 %mask) {
|
||
|
|
; CHECK: ld.param.u32 [[IN1:%r[0-9]+]]
|
||
|
|
; CHECK: ld.param.u32 [[IN2:%r[0-9]+]]
|
||
|
|
; CHECK: ld.param.u32 [[IN3:%r[0-9]+]]
|
||
|
|
; CHECK: shfl.down.{{.}}32 %r{{[0-9]+}}, [[IN1]], [[IN2]], [[IN3]];
|
||
|
|
%val = call i32 @llvm.nvvm.shfl.down.i32(i32 %in, i32 %width, i32 %mask)
|
||
|
|
ret i32 %val
|
||
|
|
}
|
||
|
|
|
||
|
|
; Try shfl.down with floating-point params.
|
||
|
|
; CHECK-LABEL: .func{{.*}}shfl.down.float
|
||
|
|
define float @shfl.down.float(float %in) {
|
||
|
|
; CHECK: ld.param.f32 [[IN:%f[0-9]+]]
|
||
|
|
; CHECK: shfl.down.b32 [[OUT:%f[0-9]+]], [[IN]], 5, 6;
|
||
|
|
; CHECK: st.param.{{.}}32 {{.*}}, [[OUT]]
|
||
|
|
%out = call float @llvm.nvvm.shfl.down.f32(float %in, i32 5, i32 6)
|
||
|
|
ret float %out
|
||
|
|
}
|
||
|
|
|
||
|
|
; Try the rest of the shfl modes. Hopefully they're declared in such a way
|
||
|
|
; that if shfl.down works correctly, they also work correctly.
|
||
|
|
define void @shfl.rest(i32 %in_i32, float %in_float, i32* %out_i32, float* %out_float) {
|
||
|
|
; CHECK: shfl.up.b32 %r{{[0-9]+}}, %r{{[0-9]+}}, 1, 2;
|
||
|
|
%up_i32 = call i32 @llvm.nvvm.shfl.up.i32(i32 %in_i32, i32 1, i32 2)
|
||
|
|
store i32 %up_i32, i32* %out_i32
|
||
|
|
|
||
|
|
; CHECK: shfl.up.b32 %f{{[0-9]+}}, %f{{[0-9]+}}, 3, 4;
|
||
|
|
%up_float = call float @llvm.nvvm.shfl.up.f32(float %in_float, i32 3, i32 4)
|
||
|
|
store float %up_float, float* %out_float
|
||
|
|
|
||
|
|
; CHECK: shfl.bfly.b32 %r{{[0-9]+}}, %r{{[0-9]+}}, 5, 6;
|
||
|
|
%bfly_i32 = call i32 @llvm.nvvm.shfl.bfly.i32(i32 %in_i32, i32 5, i32 6)
|
||
|
|
store i32 %bfly_i32, i32* %out_i32
|
||
|
|
|
||
|
|
; CHECK: shfl.bfly.b32 %f{{[0-9]+}}, %f{{[0-9]+}}, 7, 8;
|
||
|
|
%bfly_float = call float @llvm.nvvm.shfl.bfly.f32(float %in_float, i32 7, i32 8)
|
||
|
|
store float %bfly_float, float* %out_float
|
||
|
|
|
||
|
|
; CHECK: shfl.idx.b32 %r{{[0-9]+}}, %r{{[0-9]+}}, 9, 10;
|
||
|
|
%idx_i32 = call i32 @llvm.nvvm.shfl.idx.i32(i32 %in_i32, i32 9, i32 10)
|
||
|
|
store i32 %idx_i32, i32* %out_i32
|
||
|
|
|
||
|
|
; CHECK: shfl.idx.b32 %f{{[0-9]+}}, %f{{[0-9]+}}, 11, 12;
|
||
|
|
%idx_float = call float @llvm.nvvm.shfl.idx.f32(float %in_float, i32 11, i32 12)
|
||
|
|
store float %idx_float, float* %out_float
|
||
|
|
|
||
|
|
ret void
|
||
|
|
}
|