diff options
Diffstat (limited to 'test/Transforms/CodeGenPrepare/split-indirect-loop.ll')
| -rw-r--r-- | test/Transforms/CodeGenPrepare/split-indirect-loop.ll | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/test/Transforms/CodeGenPrepare/split-indirect-loop.ll b/test/Transforms/CodeGenPrepare/split-indirect-loop.ll new file mode 100644 index 000000000000..cb834bb5dd8f --- /dev/null +++ b/test/Transforms/CodeGenPrepare/split-indirect-loop.ll @@ -0,0 +1,37 @@ +; RUN: opt -codegenprepare -S < %s | FileCheck %s + +; Test that an invalid CFG is not created by splitIndirectCriticalEdges +; transformation when the 'target' block is a loop to itself. + +; CHECK: .split: +; CHECK: br label %while.body.clone +; CHECK: if.else1: +; CHECK: indirectbr +; CHECK: while.body.clone: +; CHECK: br label %.split + +define void @test() { +entry: + br label %if.else + +if.else: + br i1 undef, label %while.body, label %preheader + +preheader: + br label %if.else1 + +if.then: + unreachable + +while.body: + %dest.sroa = phi i32 [ %1, %while.body ], [ undef, %if.else1 ], [ undef, %if.else ] + %0 = inttoptr i32 %dest.sroa to i8* + %incdec.ptr = getelementptr inbounds i8, i8* %0, i32 -1 + %1 = ptrtoint i8* %incdec.ptr to i32 + store i8 undef, i8* %incdec.ptr, align 1 + br label %while.body + +if.else1: + indirectbr i8* undef, [label %if.then, label %while.body, label %if.else, label %if.else1] +} + |