| ; RUN: llc -mtriple=arm64-unknown-unknown -print-lsr-output < %s 2>&1 | FileCheck %s |
| |
| declare void @foo(i64) |
| |
| ; Verify that redundant adds aren't inserted by LSR. |
| ; CHECK-LABEL: @bar( |
| define void @bar(ptr %A) { |
| entry: |
| br label %while.cond |
| |
| while.cond: |
| ; CHECK-LABEL: while.cond: |
| ; CHECK: add i64 %lsr.iv, 1 |
| ; CHECK-NOT: add i64 %lsr.iv, 1 |
| ; CHECK-LABEL: land.rhs: |
| %indvars.iv28 = phi i64 [ %indvars.iv.next29, %land.rhs ], [ 50, %entry ] |
| %cmp = icmp sgt i64 %indvars.iv28, 0 |
| br i1 %cmp, label %land.rhs, label %while.end |
| |
| land.rhs: |
| %indvars.iv.next29 = add nsw i64 %indvars.iv28, -1 |
| %arrayidx = getelementptr inbounds double, ptr %A, i64 %indvars.iv.next29 |
| %Aload = load double, ptr %arrayidx, align 8 |
| %cmp1 = fcmp oeq double %Aload, 0.000000e+00 |
| br i1 %cmp1, label %while.cond, label %if.end |
| |
| while.end: |
| %indvars.iv28.lcssa = phi i64 [ %indvars.iv28, %while.cond ] |
| tail call void @foo(i64 %indvars.iv28.lcssa) |
| br label %if.end |
| |
| if.end: |
| ret void |
| } |
