diff options
Diffstat (limited to 'test/Transforms/LoopStrengthReduce/phi_node_update_multiple_preds.ll')
| -rw-r--r-- | test/Transforms/LoopStrengthReduce/phi_node_update_multiple_preds.ll | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/test/Transforms/LoopStrengthReduce/phi_node_update_multiple_preds.ll b/test/Transforms/LoopStrengthReduce/phi_node_update_multiple_preds.ll new file mode 100644 index 0000000000000..64d387a4a936c --- /dev/null +++ b/test/Transforms/LoopStrengthReduce/phi_node_update_multiple_preds.ll @@ -0,0 +1,28 @@ +; RUN: llvm-as < %s | opt -loop-reduce -disable-output +; LSR should not crash on this. + +define fastcc void @loadloop() { +entry: + switch i8 0, label %shortcirc_next [ + i8 32, label %loopexit.2 + i8 59, label %loopexit.2 + ] +shortcirc_next: ; preds = %no_exit.2, %entry + %indvar37 = phi i32 [ 0, %entry ], [ %indvar.next38, %no_exit.2 ] ; <i32> [#uses=3] + %gep.upgrd.1 = zext i32 %indvar37 to i64 ; <i64> [#uses=1] + %wp.2.4 = getelementptr i8* null, i64 %gep.upgrd.1 ; <i8*> [#uses=1] + br i1 false, label %loopexit.2, label %no_exit.2 +no_exit.2: ; preds = %shortcirc_next + %wp.2.4.rec = bitcast i32 %indvar37 to i32 ; <i32> [#uses=1] + %inc.1.rec = add i32 %wp.2.4.rec, 1 ; <i32> [#uses=1] + %inc.1 = getelementptr i8* null, i32 %inc.1.rec ; <i8*> [#uses=2] + %indvar.next38 = add i32 %indvar37, 1 ; <i32> [#uses=1] + switch i8 0, label %shortcirc_next [ + i8 32, label %loopexit.2 + i8 59, label %loopexit.2 + ] +loopexit.2: ; preds = %no_exit.2, %no_exit.2, %shortcirc_next, %entry, %entry + %wp.2.7 = phi i8* [ null, %entry ], [ null, %entry ], [ %wp.2.4, %shortcirc_next ], [ %inc.1, %no_exit.2 ], [ %inc.1, %no_exit.2 ] ; <i8*> [#uses=0] + ret void +} + |