| ; REQUIRES: asserts |
| ; RUN: opt < %s -S -loop-unroll -unroll-runtime=true -unroll-allow-remainder=true -unroll-count=4 |
| |
| ; Make sure that the runtime unroll does not break with a non-exiting latch. |
| define i32 @test(i32* %a, i32* %b, i32* %c, i64 %n) { |
| entry: |
| br label %while.cond |
| |
| while.cond: ; preds = %while.body, %entry |
| %i.0 = phi i64 [ 0, %entry ], [ %inc, %while.body ] |
| %cmp = icmp slt i64 %i.0, %n |
| br i1 %cmp, label %while.body, label %while.end |
| |
| while.body: ; preds = %while.cond |
| %arrayidx = getelementptr inbounds i32, i32* %b, i64 %i.0 |
| %0 = load i32, i32* %arrayidx |
| %arrayidx1 = getelementptr inbounds i32, i32* %c, i64 %i.0 |
| %1 = load i32, i32* %arrayidx1 |
| %mul = mul nsw i32 %0, %1 |
| %arrayidx2 = getelementptr inbounds i32, i32* %a, i64 %i.0 |
| store i32 %mul, i32* %arrayidx2 |
| %inc = add nsw i64 %i.0, 1 |
| br label %while.cond |
| |
| while.end: ; preds = %while.cond |
| ret i32 0 |
| } |