| ; RUN: opt -S -loop-simplifycfg < %s | FileCheck %s |
| ; RUN: opt -S -passes='require<domtree>,loop(simplify-cfg)' < %s | FileCheck %s |
| |
| ; CHECK-LABEL: foo |
| ; CHECK: entry: |
| ; CHECK-NEXT: br label %[[LOOP:[a-z]+]] |
| ; CHECK: [[LOOP]]: |
| ; CHECK-NEXT: phi |
| ; CHECK-NOT: br label |
| ; CHECK: br i1 |
| define i32 @foo(i32* %P, i64* %Q) { |
| entry: |
| br label %outer |
| |
| outer: ; preds = %outer.latch2, %entry |
| %y.2 = phi i32 [ 0, %entry ], [ %y.inc2, %outer.latch2 ] |
| br label %inner |
| |
| inner: ; preds = %outer |
| store i32 0, i32* %P |
| store i32 1, i32* %P |
| store i32 2, i32* %P |
| %y.inc2 = add nsw i32 %y.2, 1 |
| %exitcond.outer = icmp eq i32 %y.inc2, 3 |
| store i32 %y.2, i32* %P |
| br i1 %exitcond.outer, label %exit, label %outer.latch2 |
| |
| outer.latch2: ; preds = %inner |
| %t = sext i32 %y.inc2 to i64 |
| store i64 %t, i64* %Q |
| br label %outer |
| |
| exit: ; preds = %inner |
| ret i32 0 |
| } |
