summaryrefslogtreecommitdiffstats
path: root/llvm/test/Transforms/LoopSimplify
diff options
context:
space:
mode:
authorDan Gohman <gohman@apple.com>2010-08-14 00:43:09 +0000
committerDan Gohman <gohman@apple.com>2010-08-14 00:43:09 +0000
commitaa445c075119075e59dad9d431ee37e33430a938 (patch)
tree57e732c291b1cfa8f911c176439c8bbb84a323a7 /llvm/test/Transforms/LoopSimplify
parent4a63fad976c8cf3bcdc1bbc3927668164890ecb8 (diff)
downloadbcm5719-llvm-aa445c075119075e59dad9d431ee37e33430a938.tar.gz
bcm5719-llvm-aa445c075119075e59dad9d431ee37e33430a938.zip
LoopSimplify shouldn't split loop backedges that use indirectbr. PR7867.
llvm-svn: 111061
Diffstat (limited to 'llvm/test/Transforms/LoopSimplify')
-rw-r--r--llvm/test/Transforms/LoopSimplify/indirectbr-backedge.ll35
1 files changed, 35 insertions, 0 deletions
diff --git a/llvm/test/Transforms/LoopSimplify/indirectbr-backedge.ll b/llvm/test/Transforms/LoopSimplify/indirectbr-backedge.ll
new file mode 100644
index 00000000000..ca6e47fcecd
--- /dev/null
+++ b/llvm/test/Transforms/LoopSimplify/indirectbr-backedge.ll
@@ -0,0 +1,35 @@
+; RUN: opt -loopsimplify -S < %s | FileCheck %s
+
+; LoopSimplify shouldn't split loop backedges that use indirectbr.
+
+; CHECK: bb1: ; preds = %bb5, %bb
+; CHECK-NEXT: indirectbr
+
+; CHECK: bb5: ; preds = %bb1
+; CHECK-NEXT: br label %bb1{{$}}
+
+define void @foo(i8* %p) nounwind {
+bb:
+ br label %bb1
+
+bb1: ; preds = %bb5, %bb1, %bb
+ indirectbr i8* %p, [label %bb6, label %bb7, label %bb1, label %bb2, label %bb3, label %bb5, label %bb4]
+
+bb2: ; preds = %bb1
+ ret void
+
+bb3: ; preds = %bb1
+ ret void
+
+bb4: ; preds = %bb1
+ ret void
+
+bb5: ; preds = %bb1
+ br label %bb1
+
+bb6: ; preds = %bb1
+ ret void
+
+bb7: ; preds = %bb1
+ ret void
+}
OpenPOWER on IntegriCloud