| Chuang-Yu Cheng | f0eba83 | 2016-04-05 14:21:32 +0000 | [diff] [blame] | 1 | ; RUN: opt -codegenprepare -S < %s | FileCheck %s |
| 2 | ; CHECK: for.body.preheader |
| 3 | |
| 4 | @N = common global i32 0, align 4 |
| 5 | @E = common global i8** null, align 8 |
| 6 | @B = common global i8** null, align 8 |
| 7 | |
| 8 | ; Function Attrs: nounwind |
| 9 | define i32 @foo() { |
| 10 | entry: |
| 11 | %0 = load i32, i32* @N, align 4 |
| 12 | %1 = load i8**, i8*** @E, align 8 |
| 13 | %2 = load i8**, i8*** @B, align 8 |
| 14 | %cmp7 = icmp eq i8** %2, %1 |
| 15 | br i1 %cmp7, label %for.cond.cleanup, label %for.body.preheader |
| 16 | |
| 17 | for.body.preheader: ; preds = %entry |
| 18 | br label %for.body |
| 19 | |
| 20 | for.cond.cleanup.loopexit: ; preds = %for.body |
| 21 | %add.lcssa = phi i32 [ %add, %for.body ] |
| 22 | br label %for.cond.cleanup |
| 23 | |
| 24 | for.cond.cleanup: ; preds = %for.cond.cleanup.loopexit, %entry |
| 25 | %n.0.lcssa = phi i32 [ %0, %entry ], [ %add.lcssa, %for.cond.cleanup.loopexit ] |
| 26 | ret i32 %n.0.lcssa |
| 27 | |
| 28 | for.body: ; preds = %for.body.preheader, %for.body |
| 29 | %I.09 = phi i8** [ %incdec.ptr, %for.body ], [ %2, %for.body.preheader ] |
| 30 | %n.08 = phi i32 [ %add, %for.body ], [ %0, %for.body.preheader ] |
| 31 | %3 = load i8*, i8** %I.09, align 8 |
| 32 | %call = tail call i32 @map(i8* %3) |
| 33 | %add = add nsw i32 %call, %n.08 |
| 34 | %incdec.ptr = getelementptr inbounds i8*, i8** %I.09, i64 1 |
| 35 | %cmp = icmp eq i8** %incdec.ptr, %1 |
| 36 | br i1 %cmp, label %for.cond.cleanup.loopexit, label %for.body |
| 37 | } |
| 38 | |
| 39 | declare i32 @map(i8*) |