commit 7fea7c81c0970cdb150c1fadb2776dec9fd09780
author Chad Rosier <mcrosier@apple.com> Tue Apr 17 00:35:38 2012 +0000
committer Chad Rosier <mcrosier@apple.com> Tue Apr 17 00:35:38 2012 +0000
tree d9032bc57f114e76607bdc7e0b0729a61e27601a
parent 0ff258b933fe385425bf2a85429bf46376d338f1

Make sure EmitMoveFromReturnSlot is passing the correct alignment to
EmitFinalDestCopy (and thus pass EmitAggregateCopy the correct alignment).
rdar://11220251


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154883 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/CGExprAgg.cpp

diff --git a/lib/CodeGen/CGExprAgg.cpp b/lib/CodeGen/CGExprAgg.cpp
index 2103026..d345154 100644
--- a/lib/CodeGen/CGExprAgg.cpp
+++ b/lib/CodeGen/CGExprAgg.cpp
@@ -238,7 +238,7 @@
 
   // Otherwise, do a final copy, 
   assert(Dest.getAddr() != Src.getAggregateAddr());
-  EmitFinalDestCopy(E, Src, /*Ignore*/ true);
+  EmitFinalDestCopy(E, Src, /*Ignore*/ true, Dest.getAlignment().getQuantity());
 }
 
 /// EmitFinalDestCopy - Perform the final copy to DestPtr, if desired.

test/CodeGen/packed-nest-unpacked.c

diff --git a/test/CodeGen/packed-nest-unpacked.c b/test/CodeGen/packed-nest-unpacked.c
index 3751473..d10a88a 100644
--- a/test/CodeGen/packed-nest-unpacked.c
+++ b/test/CodeGen/packed-nest-unpacked.c
@@ -4,6 +4,7 @@
 struct Y { char x[13]; struct X y; } __attribute((packed));
 struct Y g;
 void f(struct X);
+struct X foo(void);
 
 // <rdar://problem/10463337>
 struct X test1() {
@@ -37,3 +38,10 @@
   // CHECK: load i32* getelementptr inbounds (%struct.Y* @g, i32 0, i32 1, i32 0, i64 0), align 1
   return g.y.x[0];
 }
+
+// <rdar://problem/11220251>
+void test6() {
+  // CHECK: @test6
+  // CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* bitcast (%struct.X* getelementptr inbounds (%struct.Y* @g, i32 0, i32 1) to i8*), i8* %0, i64 24, i32 1, i1 false)
+  g.y = foo();
+}