| ; RUN: llc < %s -march=nvptx64 -mcpu=sm_20 | FileCheck %s |
| |
| target datalayout = "e-i64:64-v16:16-v32:32-n16:32:64" |
| target triple = "nvptx64-unknown-unknown" |
| |
| ; Compiled from the following CUDA code: |
| ; |
| ; #pragma nounroll |
| ; for (int i = 0; i < 2; ++i) |
| ; output[i] = input[i]; |
| define void @nounroll(float* %input, float* %output) { |
| ; CHECK-LABEL: .visible .func nounroll( |
| entry: |
| br label %for.body |
| |
| for.body: |
| ; CHECK: .pragma "nounroll" |
| %i.06 = phi i32 [ 0, %entry ], [ %inc, %for.body ] |
| %idxprom = sext i32 %i.06 to i64 |
| %arrayidx = getelementptr inbounds float, float* %input, i64 %idxprom |
| %0 = load float, float* %arrayidx, align 4 |
| ; CHECK: ld.f32 |
| %arrayidx2 = getelementptr inbounds float, float* %output, i64 %idxprom |
| store float %0, float* %arrayidx2, align 4 |
| ; CHECK: st.f32 |
| %inc = add nuw nsw i32 %i.06, 1 |
| %exitcond = icmp eq i32 %inc, 2 |
| br i1 %exitcond, label %for.end, label %for.body, !llvm.loop !0 |
| ; CHECK-NOT: ld.f32 |
| ; CHECK-NOT: st.f32 |
| |
| for.end: |
| ret void |
| } |
| |
| !0 = distinct !{!0, !1} |
| !1 = !{!"llvm.loop.unroll.disable"} |
