| ; RUN: opt < %s -scalar-evolution -analyze | grep "Loop %bb3: backedge-taken count is (-1 + %n)" |
| |
| ; We don't want to use a max in the trip count expression in |
| ; this testcase. |
| |
| define void @foo(i32 %n, i32* %p, i32* %q) nounwind { |
| entry: |
| icmp sgt i32 %n, 0 |
| br i1 %0, label %bb, label %return |
| |
| bb: |
| load i32* %q, align 4 |
| icmp eq i32 %1, 0 |
| br i1 %2, label %return, label %bb3.preheader |
| |
| bb3.preheader: |
| br label %bb3 |
| |
| bb3: |
| %i.0 = phi i32 [ %7, %bb3 ], [ 0, %bb3.preheader ] |
| getelementptr i32* %p, i32 %i.0 |
| load i32* %3, align 4 |
| add i32 %4, 1 |
| getelementptr i32* %p, i32 %i.0 |
| store i32 %5, i32* %6, align 4 |
| add i32 %i.0, 1 |
| icmp slt i32 %7, %n |
| br i1 %8, label %bb3, label %return.loopexit |
| |
| return.loopexit: |
| br label %return |
| |
| return: |
| ret void |
| } |
