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Teach SplitBlockPredecessors how to handle landingpad blocks.

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Patch by: Igor Laevsky <igor@azulsystems.com>

"Currently SplitBlockPredecessors generates incorrect code in case if basic block we are going to split has a landingpad. Also seems like it is fairly common case among it's users to conditionally call either SplitBlockPredecessors or SplitLandingPadPredecessors. Because of this I think it is reasonable to add this condition directly into SplitBlockPredecessors."

Differential Revision: http://reviews.llvm.org/D7157



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@227390 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Philip Reames
2015-01-28 23:06:47 +00:00
parent 408796c672
commit 61a76b2d4a
6 changed files with 39 additions and 48 deletions
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test/Transforms/LoopSimplify/2011-12-14-LandingpadHeader.ll
+1 -1
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@@ -12,7 +12,7 @@ entry:
; CHECK-NEXT: landingpad
; CHECK: br label %catch
; CHECK: catch.split-lp:
; CHECK: catch.preheader.split-lp:
; CHECK-NEXT: landingpad
; CHECK: br label %catch