| Sanjoy Das | 8c252bd | 2015-01-15 01:46:09 +0000 | [diff] [blame] | 1 | ; RUN: opt -indvars -S < %s | FileCheck %s |
| 2 | |
| 3 | @b = common global i32 0, align 4 |
| 4 | @c = common global i32 0, align 4 |
| 5 | @a = common global i32 0, align 4 |
| 6 | |
| 7 | declare void @abort() #1 |
| 8 | |
| 9 | ; Function Attrs: nounwind ssp uwtable |
| 10 | define i32 @main() { |
| 11 | entry: |
| David Blaikie | a79ac14 | 2015-02-27 21:17:42 +0000 | [diff] [blame] | 12 | %a.promoted13 = load i32, i32* @a, align 4 |
| Sanjoy Das | 8c252bd | 2015-01-15 01:46:09 +0000 | [diff] [blame] | 13 | br label %for.cond1.preheader |
| 14 | |
| 15 | for.cond1.preheader: ; preds = %entry, %for.end |
| 16 | %or.lcssa14 = phi i32 [ %a.promoted13, %entry ], [ %or.lcssa, %for.end ] |
| 17 | %d.010 = phi i32 [ 1, %entry ], [ 0, %for.end ] |
| 18 | br label %for.body3 |
| 19 | |
| 20 | for.body3: ; preds = %for.cond1.preheader, %for.body3 |
| 21 | %inc12 = phi i32 [ 0, %for.cond1.preheader ], [ %inc, %for.body3 ] |
| 22 | %or11 = phi i32 [ %or.lcssa14, %for.cond1.preheader ], [ %or, %for.body3 ] |
| 23 | ; CHECK-NOT: sub nuw i32 %inc12, %d.010 |
| 24 | ; CHECK: sub i32 %inc12, %d.010 |
| 25 | %add = sub i32 %inc12, %d.010 |
| 26 | %or = or i32 %or11, %add |
| 27 | %inc = add i32 %inc12, 1 |
| 28 | br i1 false, label %for.body3, label %for.end |
| 29 | |
| 30 | for.end: ; preds = %for.body3 |
| 31 | %or.lcssa = phi i32 [ %or, %for.body3 ] |
| 32 | br i1 false, label %for.cond1.preheader, label %for.end6 |
| 33 | |
| 34 | for.end6: ; preds = %for.end |
| 35 | %or.lcssa.lcssa = phi i32 [ %or.lcssa, %for.end ] |
| 36 | store i32 %or.lcssa.lcssa, i32* @a, align 4 |
| 37 | %cmp7 = icmp eq i32 %or.lcssa.lcssa, -1 |
| 38 | br i1 %cmp7, label %if.end, label %if.then |
| 39 | |
| 40 | if.then: ; preds = %for.end6 |
| 41 | tail call void @abort() #2 |
| 42 | unreachable |
| 43 | |
| 44 | if.end: ; preds = %for.end6 |
| 45 | ret i32 0 |
| 46 | } |