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- ; 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"}
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