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Diffstat (limited to 'llvm/test/Transforms/LoopStrengthReduce/pr84709.ll')
| -rw-r--r-- | llvm/test/Transforms/LoopStrengthReduce/pr84709.ll | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/llvm/test/Transforms/LoopStrengthReduce/pr84709.ll b/llvm/test/Transforms/LoopStrengthReduce/pr84709.ll new file mode 100644 index 000000000000..99794d01242c --- /dev/null +++ b/llvm/test/Transforms/LoopStrengthReduce/pr84709.ll @@ -0,0 +1,34 @@ +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4 +; RUN: opt -S -passes=loop-reduce < %s | FileCheck %s + +; Make sure it does not assert. +define i64 @test() { +; CHECK-LABEL: define i64 @test() { +; CHECK-NEXT: bb: +; CHECK-NEXT: br label [[BB1:%.*]] +; CHECK: bb1: +; CHECK-NEXT: br label [[BB2:%.*]] +; CHECK: bb2: +; CHECK-NEXT: br i1 true, label [[BB5:%.*]], label [[BB2]] +; CHECK: bb5: +; CHECK-NEXT: br label [[BB1]] +; +bb: + br label %bb1 + +bb1: + %phi = phi i8 [ %zext6, %bb5 ], [ 0, %bb ] + br label %bb2 + +bb2: + %phi3 = phi i8 [ %add, %bb2 ], [ %phi, %bb1 ] + %phi4 = phi i32 [ 0, %bb2 ], [ 1, %bb1 ] + %add = add i8 %phi3, 1 + br i1 true, label %bb5, label %bb2 + +bb5: + %zext = zext i8 %add to i32 + %icmp = icmp sge i32 %phi4, 0 + %zext6 = zext i1 %icmp to i8 + br label %bb1 +} |