| ; RUN: opt < %s -analyze -scalar-evolution \ | |
| ; RUN: -scalar-evolution-max-iterations=0 | FileCheck %s | |
| ; PR2607 | |
| define i32 @_Z1aj(i32 %j) nounwind { | |
| entry: | |
| icmp sgt i32 0, %j ; <i1>:0 [#uses=1] | |
| br i1 %0, label %bb.preheader, label %return | |
| bb.preheader: ; preds = %entry | |
| br label %bb | |
| bb: ; preds = %bb, %bb.preheader | |
| %i.01 = phi i32 [ %1, %bb ], [ 0, %bb.preheader ] ; <i32> [#uses=1] | |
| add i32 %i.01, -1 ; <i32>:1 [#uses=3] | |
| icmp sgt i32 %1, %j ; <i1>:2 [#uses=1] | |
| br i1 %2, label %bb, label %return.loopexit | |
| return.loopexit: ; preds = %bb | |
| br label %return | |
| return: ; preds = %return.loopexit, %entry | |
| %i.0.lcssa = phi i32 [ 0, %entry ], [ %1, %return.loopexit ] ; <i32> [#uses=1] | |
| ret i32 %i.0.lcssa | |
| } | |
| ; CHECK: backedge-taken count is (-1 + (-1 * %j)) | |