| ; RUN: opt -indvars -S < %s | FileCheck %s |
| |
| @b = common global i32 0, align 4 |
| @c = common global i32 0, align 4 |
| @a = common global i32 0, align 4 |
| |
| declare void @abort() #1 |
| |
| ; Function Attrs: nounwind ssp uwtable |
| define i32 @main() { |
| entry: |
| %a.promoted13 = load i32, i32* @a, align 4 |
| br label %for.cond1.preheader |
| |
| for.cond1.preheader: ; preds = %entry, %for.end |
| %or.lcssa14 = phi i32 [ %a.promoted13, %entry ], [ %or.lcssa, %for.end ] |
| %d.010 = phi i32 [ 1, %entry ], [ 0, %for.end ] |
| br label %for.body3 |
| |
| for.body3: ; preds = %for.cond1.preheader, %for.body3 |
| %inc12 = phi i32 [ 0, %for.cond1.preheader ], [ %inc, %for.body3 ] |
| %or11 = phi i32 [ %or.lcssa14, %for.cond1.preheader ], [ %or, %for.body3 ] |
| ; CHECK-NOT: sub nuw i32 %inc12, %d.010 |
| ; CHECK: sub i32 %inc12, %d.010 |
| %add = sub i32 %inc12, %d.010 |
| %or = or i32 %or11, %add |
| %inc = add i32 %inc12, 1 |
| br i1 false, label %for.body3, label %for.end |
| |
| for.end: ; preds = %for.body3 |
| %or.lcssa = phi i32 [ %or, %for.body3 ] |
| br i1 false, label %for.cond1.preheader, label %for.end6 |
| |
| for.end6: ; preds = %for.end |
| %or.lcssa.lcssa = phi i32 [ %or.lcssa, %for.end ] |
| store i32 %or.lcssa.lcssa, i32* @a, align 4 |
| %cmp7 = icmp eq i32 %or.lcssa.lcssa, -1 |
| br i1 %cmp7, label %if.end, label %if.then |
| |
| if.then: ; preds = %for.end6 |
| tail call void @abort() #2 |
| unreachable |
| |
| if.end: ; preds = %for.end6 |
| ret i32 0 |
| } |
