| ; RUN: opt < %s -analyze -scalar-evolution 2>&1 | FileCheck %s |
| |
| ; CHECK: Loop %bb: backedge-taken count is (7 + (-1 * %argc)) |
| |
| define i32 @main(i32 %argc, i8** %argv) nounwind { |
| entry: |
| %0 = icmp ugt i32 %argc, 7 ; <i1> [#uses=1] |
| br i1 %0, label %bb2, label %bb.nph |
| |
| bb.nph: ; preds = %entry |
| br label %bb |
| |
| bb: ; preds = %bb.nph, %bb1 |
| %indvar = phi i32 [ 0, %bb.nph ], [ %indvar.next, %bb1 ] ; <i32> [#uses=2] |
| %argc_addr.04 = add i32 %indvar, %argc ; <i32> [#uses=1] |
| tail call void (...) @Test() nounwind |
| %1 = add i32 %argc_addr.04, 1 ; <i32> [#uses=1] |
| br label %bb1 |
| |
| bb1: ; preds = %bb |
| %phitmp = icmp ugt i32 %1, 7 ; <i1> [#uses=1] |
| %indvar.next = add i32 %indvar, 1 ; <i32> [#uses=1] |
| br i1 %phitmp, label %bb1.bb2_crit_edge, label %bb |
| |
| bb1.bb2_crit_edge: ; preds = %bb1 |
| br label %bb2 |
| |
| bb2: ; preds = %bb1.bb2_crit_edge, %entry |
| ret i32 0 |
| } |
| |
| declare void @Test(...) |
