From 4832a9d32cc0b3158dd94feeb8050352f5322401 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Tue, 18 Jan 2011 20:53:04 +0000
Subject: [PATCH] fix rdar://8878965, a regression I introduced with the recent
 llvm.objectsize changes.

llvm-svn: 123771
---
 lib/Transforms/Scalar/CodeGenPrepare.cpp |  4 ++-
 test/CodeGen/Generic/crash.ll            | 32 ++++++++++++++++++++++++
 2 files changed, 35 insertions(+), 1 deletion(-)

diff --git a/lib/Transforms/Scalar/CodeGenPrepare.cpp b/lib/Transforms/Scalar/CodeGenPrepare.cpp
index 72c8bf30477..9536939ba2d 100644
--- a/lib/Transforms/Scalar/CodeGenPrepare.cpp
+++ b/lib/Transforms/Scalar/CodeGenPrepare.cpp
@@ -644,8 +644,10 @@ bool CodeGenPrepare::OptimizeCallInst(CallInst *CI) {
 
     // If the iterator instruction was recursively deleted, start over at the
     // start of the block.
-    if (IterHandle != CurInstIterator)
+    if (IterHandle != CurInstIterator) {
       CurInstIterator = BB->begin();
+      SunkAddrs.clear();
+    }
     return true;
   }
 
diff --git a/test/CodeGen/Generic/crash.ll b/test/CodeGen/Generic/crash.ll
index 7218565617f..042739884df 100644
--- a/test/CodeGen/Generic/crash.ll
+++ b/test/CodeGen/Generic/crash.ll
@@ -6,3 +6,35 @@
 @tags = global [1 x %struct.AVCodecTag*] [%struct.AVCodecTag* getelementptr
 inbounds ([0 x %struct.AVCodecTag]* @ff_codec_bmp_tags, i32 0, i32 0)]
 
+
+; rdar://8878965
+
+%struct.CAMERA = type { [3 x double], [3 x double], [3 x double], [3 x double], [3 x double], [3 x double], double, double, i32, double, double, i32, double, i32* }
+
+define void @Parse_Camera(%struct.CAMERA** nocapture %Camera_Ptr) nounwind {
+entry:
+%.pre = load %struct.CAMERA** %Camera_Ptr, align 4
+%0 = getelementptr inbounds %struct.CAMERA* %.pre, i32 0, i32 1, i32 0
+%1 = getelementptr inbounds %struct.CAMERA* %.pre, i32 0, i32 1, i32 2
+br label %bb32
+
+bb32:                                             ; preds = %bb6
+%2 = load double* %0, align 4
+%3 = load double* %1, align 4
+%4 = load double* %0, align 4
+call void @Parse_Vector(double* %0) nounwind
+%5 = call i32 @llvm.objectsize.i32(i8* undef, i1 false)
+%6 = icmp eq i32 %5, -1
+br i1 %6, label %bb34, label %bb33
+
+bb33:                                             ; preds = %bb32
+unreachable
+
+bb34:                                             ; preds = %bb32
+unreachable
+
+}
+
+declare void @Parse_Vector(double*)
+declare i32 @llvm.objectsize.i32(i8*, i1)
+