From f9a1b2a4cfd4b6b5fc92a09c326f6daef4808059 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Mon, 13 Dec 2010 23:02:19 +0000
Subject: [PATCH] temporarily disable part of my previous patch, which causes
 an iterator invalidation issue, causing a crash on some versions of perlbmk.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121728 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Transforms/Utils/SimplifyCFG.cpp         |  2 +-
 test/Transforms/SimplifyCFG/switch_create.ll | 51 ++++++++++++++------
 2 files changed, 37 insertions(+), 16 deletions(-)

diff --git a/lib/Transforms/Utils/SimplifyCFG.cpp b/lib/Transforms/Utils/SimplifyCFG.cpp
index 12960c94645..61ddc7c0d4a 100644
--- a/lib/Transforms/Utils/SimplifyCFG.cpp
+++ b/lib/Transforms/Utils/SimplifyCFG.cpp
@@ -1515,7 +1515,7 @@ bool llvm::FoldBranchToCommonDest(BranchInst *BI) {
       AddPredecessorToBlock(FalseDest, PredBlock, BB);
       PBI->setSuccessor(1, FalseDest);
     }
-    return SimplifyCFG(PBI->getParent()) | true;
+    return SimplifyCFG(BB) | true;
   }
   return false;
 }
diff --git a/test/Transforms/SimplifyCFG/switch_create.ll b/test/Transforms/SimplifyCFG/switch_create.ll
index 74a51d9c79d..e11f04e2da6 100644
--- a/test/Transforms/SimplifyCFG/switch_create.ll
+++ b/test/Transforms/SimplifyCFG/switch_create.ll
@@ -253,21 +253,21 @@ lor.end:                                          ; preds = %lor.rhs, %lor.lhs.f
   ret i32 %conv46
   
 ; CHECK: @test9
-; CHECK:   %cmp = icmp ult i8 %c, 33
-; CHECK:   br i1 %cmp, label %lor.end, label %switch.early.test
-
-; CHECK: switch.early.test:
-; CHECK:   switch i8 %c, label %lor.rhs [
-; CHECK:     i8 46, label %lor.end
-; CHECK:     i8 44, label %lor.end
-; CHECK:     i8 58, label %lor.end
-; CHECK:     i8 59, label %lor.end
-; CHECK:     i8 60, label %lor.end
-; CHECK:     i8 62, label %lor.end
-; CHECK:     i8 34, label %lor.end
-; CHECK:     i8 92, label %lor.end
-; CHECK:     i8 39, label %lor.end
-; CHECK:   ]
+; HECK:   %cmp = icmp ult i8 %c, 33
+; HECK:   br i1 %cmp, label %lor.end, label %switch.early.test
+
+; HECK: switch.early.test:
+; HECK:   switch i8 %c, label %lor.rhs [
+; HECK:     i8 46, label %lor.end
+; HECK:     i8 44, label %lor.end
+; HECK:     i8 58, label %lor.end
+; HECK:     i8 59, label %lor.end
+; HECK:     i8 60, label %lor.end
+; HECK:     i8 62, label %lor.end
+; HECK:     i8 34, label %lor.end
+; HECK:     i8 92, label %lor.end
+; HECK:     i8 39, label %lor.end
+; HECK:   ]
 }
 
 define i32 @test10(i32 %mode, i1 %Cond) {
@@ -331,3 +331,24 @@ return:                                           ; preds = %if.end, %if.then
 ; CHECK:   i32 4, label %return
 ; CHECK: ]
 }
+
+define void @test12() nounwind {
+entry:
+  br label %bb49.us.us
+
+bb49.us.us:
+  %A = icmp eq i32 undef, undef
+  br i1 %A, label %bb55.us.us, label %malformed
+
+bb48.us.us:
+  %B = icmp ugt i32 undef, undef
+  br i1 %B, label %bb55.us.us, label %bb49.us.us
+
+bb55.us.us:
+  br label %bb48.us.us
+
+malformed:
+  ret void
+; CHECK: @test12
+
+}
\ No newline at end of file
-- 
2.34.1