diff options
Diffstat (limited to 'llvm/test/Transforms/LoopUnroll/update-loop-info-in-subloops.ll')
| -rw-r--r-- | llvm/test/Transforms/LoopUnroll/update-loop-info-in-subloops.ll | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/llvm/test/Transforms/LoopUnroll/update-loop-info-in-subloops.ll b/llvm/test/Transforms/LoopUnroll/update-loop-info-in-subloops.ll new file mode 100644 index 00000000000..4718e0500a6 --- /dev/null +++ b/llvm/test/Transforms/LoopUnroll/update-loop-info-in-subloops.ll @@ -0,0 +1,36 @@ +; RUN: opt -S < %s -loop-unroll -block-freq | FileCheck %s +; RUN: opt -S < %s -passes='require<opt-remark-emit>,unroll,require<block-freq>' | FileCheck %s +; Crasher from PR20987. + +; CHECK: define void @update_loop_info_in_subloops +; CHECK: entry: +; CHECK: L: +; CHECK: L.inner: +; CHECK: L.inner.latch: +; CHECK: L.latch: +; CHECK: L.inner.1: +; CHECK: L.inner.latch.1: +; CHECK: L.latch.1: + +define void @update_loop_info_in_subloops() { +entry: + br label %L + +L: + %0 = phi i64 [ 1, %entry ], [ %1, %L.latch ] + br label %L.inner + +L.inner: + br label %L.inner.latch + +L.inner.latch: + br i1 false, label %L.latch, label %L.inner + +L.latch: + %1 = add i64 %0, 1 + %2 = icmp eq i64 %1, 3 + br i1 %2, label %exit, label %L + +exit: + ret void +} |
