| ; RUN: opt < %s -separate-const-offset-from-gep -slsr -gvn -S | FileCheck %s |
| ; RUN: llc < %s -march=nvptx64 -mcpu=sm_35 | FileCheck %s --check-prefix=PTX |
| |
| target datalayout = "e-i64:64-v16:16-v32:32-n16:32:64" |
| target triple = "nvptx64-unknown-unknown" |
| |
| ; arr[i + 5] |
| ; arr[i * 2 + 5] |
| ; arr[i * 3 + 5] |
| ; arr[i * 4 + 5] |
| ; |
| ; => reassociate-geps |
| ; |
| ; *(&arr[i] + 5) |
| ; *(&arr[i * 2] + 5) |
| ; *(&arr[i * 3] + 5) |
| ; *(&arr[i * 4] + 5) |
| ; |
| ; => slsr |
| ; |
| ; p1 = &arr[i] |
| ; *(p1 + 5) |
| ; p2 = p1 + i |
| ; *(p2 + 5) |
| ; p3 = p2 + i |
| ; *(p3 + 5) |
| ; p4 = p3 + i |
| ; *(p4 + 5) |
| define void @slsr_after_reassociate_geps(float* %arr, i32 %i) { |
| ; CHECK-LABEL: @slsr_after_reassociate_geps( |
| ; PTX-LABEL: .visible .func slsr_after_reassociate_geps( |
| ; PTX: ld.param.u64 [[arr:%rd[0-9]+]], [slsr_after_reassociate_geps_param_0]; |
| ; PTX: ld.param.u32 [[i:%r[0-9]+]], [slsr_after_reassociate_geps_param_1]; |
| %i2 = shl nsw i32 %i, 1 |
| %i3 = mul nsw i32 %i, 3 |
| %i4 = shl nsw i32 %i, 2 |
| |
| %j1 = add nsw i32 %i, 5 |
| %p1 = getelementptr inbounds float, float* %arr, i32 %j1 |
| ; CHECK: [[b1:%[0-9]+]] = getelementptr float, float* %arr, i64 [[bump:%[0-9]+]] |
| ; PTX: mul.wide.s32 [[i4:%rd[0-9]+]], [[i]], 4; |
| ; PTX: add.s64 [[base1:%rd[0-9]+]], [[arr]], [[i4]]; |
| %v1 = load float, float* %p1, align 4 |
| ; PTX: ld.f32 {{%f[0-9]+}}, {{\[}}[[base1]]+20]; |
| call void @foo(float %v1) |
| |
| %j2 = add nsw i32 %i2, 5 |
| %p2 = getelementptr inbounds float, float* %arr, i32 %j2 |
| ; CHECK: [[b2:%[0-9]+]] = getelementptr float, float* [[b1]], i64 [[bump]] |
| ; PTX: add.s64 [[base2:%rd[0-9]+]], [[base1]], [[i4]]; |
| %v2 = load float, float* %p2, align 4 |
| ; PTX: ld.f32 {{%f[0-9]+}}, {{\[}}[[base2]]+20]; |
| call void @foo(float %v2) |
| |
| %j3 = add nsw i32 %i3, 5 |
| %p3 = getelementptr inbounds float, float* %arr, i32 %j3 |
| ; CHECK: [[b3:%[0-9]+]] = getelementptr float, float* [[b2]], i64 [[bump]] |
| ; PTX: add.s64 [[base3:%rd[0-9]+]], [[base2]], [[i4]]; |
| %v3 = load float, float* %p3, align 4 |
| ; PTX: ld.f32 {{%f[0-9]+}}, {{\[}}[[base3]]+20]; |
| call void @foo(float %v3) |
| |
| %j4 = add nsw i32 %i4, 5 |
| %p4 = getelementptr inbounds float, float* %arr, i32 %j4 |
| ; CHECK: [[b4:%[0-9]+]] = getelementptr float, float* [[b3]], i64 [[bump]] |
| ; PTX: add.s64 [[base4:%rd[0-9]+]], [[base3]], [[i4]]; |
| %v4 = load float, float* %p4, align 4 |
| ; PTX: ld.f32 {{%f[0-9]+}}, {{\[}}[[base4]]+20]; |
| call void @foo(float %v4) |
| |
| ret void |
| } |
| |
| declare void @foo(float) |