| ; RUN: opt -disable-loop-unrolling -O1 -S < %s | FileCheck %s |
| ; |
| ; Check loop unrolling metadata is honored despite automatic unrolling |
| ; being disabled in the pass builder. |
| ; |
| target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| |
| ; CHECK-LABEL: @forced( |
| ; CHECK: load |
| ; CHECK: load |
| define void @forced(ptr nocapture %a) { |
| entry: |
| br label %for.body |
| |
| for.body: |
| %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] |
| %arrayidx = getelementptr inbounds i32, ptr %a, i64 %indvars.iv |
| %0 = load i32, ptr %arrayidx, align 4 |
| %inc = add nsw i32 %0, 1 |
| store i32 %inc, ptr %arrayidx, align 4 |
| %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 |
| %exitcond = icmp eq i64 %indvars.iv.next, 64 |
| br i1 %exitcond, label %for.end, label %for.body, !llvm.loop !0 |
| |
| for.end: |
| ret void |
| } |
| |
| !0 = distinct !{!0, !{!"llvm.loop.unroll.enable"}, |
| !{!"llvm.loop.unroll.count", i32 2}} |
