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Diffstat (limited to 'test/Transforms/Util/lowerswitch.ll')
| -rw-r--r-- | test/Transforms/Util/lowerswitch.ll | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/test/Transforms/Util/lowerswitch.ll b/test/Transforms/Util/lowerswitch.ll new file mode 100644 index 0000000..06bd4cc --- /dev/null +++ b/test/Transforms/Util/lowerswitch.ll @@ -0,0 +1,22 @@ +; RUN: opt -lowerswitch -S < %s | FileCheck %s + +; Test that we don't crash and have a different basic block for each incoming edge. +define void @test_lower_switch() { +; CHECK-LABEL: @test_lower_switch +; CHECK: %merge = phi i64 [ 1, %BB3 ], [ 0, %NewDefault ], [ 0, %NodeBlock5 ], [ 0, %LeafBlock1 ] +BB1: + switch i32 undef, label %BB2 [ + i32 3, label %BB2 + i32 5, label %BB2 + i32 0, label %BB3 + i32 2, label %BB3 + i32 4, label %BB3 + ] + +BB2: + %merge = phi i64 [ 1, %BB3 ], [ 0, %BB1 ], [ 0, %BB1 ], [ 0, %BB1 ] + ret void + +BB3: + br label %BB2 +} |