From: Eli Friedman <eli.friedman@gmail.com>
Date: Fri, 27 May 2011 22:32:55 +0000 (+0000)
Subject: Add unnamed_addr to internal globals which are only used as an operand to memcpy... 
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=460980d3b9d045288041bf8b826899795c60ca1d;p=clang

Add unnamed_addr to internal globals which are only used as an operand to memcpy. (Spotted by looking at IR.)



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@132226 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/CGDecl.cpp b/lib/CodeGen/CGDecl.cpp
index 0e1054affd..9991b302b2 100644
--- a/lib/CodeGen/CGDecl.cpp
+++ b/lib/CodeGen/CGDecl.cpp
@@ -742,6 +742,7 @@ void CodeGenFunction::EmitAutoVarInit(const AutoVarEmission &emission) {
                                llvm::GlobalValue::InternalLinkage,
                                constant, Name, 0, false, 0);
     GV->setAlignment(alignment.getQuantity());
+    GV->setUnnamedAddr(true);
         
     llvm::Value *SrcPtr = GV;
     if (SrcPtr->getType() != BP)
diff --git a/test/CodeGen/decl.c b/test/CodeGen/decl.c
index 7a9971ee18..29520d77ff 100644
--- a/test/CodeGen/decl.c
+++ b/test/CodeGen/decl.c
@@ -1,11 +1,11 @@
 // RUN: %clang_cc1 -w -emit-llvm < %s | FileCheck %s
 
 // CHECK: @test1.x = internal constant [12 x i32] [i32 1
-// CHECK: @test2.x = internal constant [13 x i32] [i32 1,
+// CHECK: @test2.x = internal unnamed_addr constant [13 x i32] [i32 1,
 // CHECK: @test5w = global %0 { i32 2, [4 x i8] undef }
 // CHECK: @test5y = global %union.test5u { double 7.300000e+0{{[0]*}}1 }
 
-// CHECK: @test6.x = internal constant %struct.SelectDest { i8 1, i8 2, i32 3, i32 0 }
+// CHECK: @test6.x = internal unnamed_addr constant %struct.SelectDest { i8 1, i8 2, i32 3, i32 0 }
 
 // CHECK: @test7 = global [2 x %struct.test7s] [%struct.test7s { i32 1, i32 2 }, %struct.test7s { i32 4, i32 0 }]
 
diff --git a/test/CodeGen/string-literal-short-wstring.c b/test/CodeGen/string-literal-short-wstring.c
index 8c2e412f22..ce2990492a 100644
--- a/test/CodeGen/string-literal-short-wstring.c
+++ b/test/CodeGen/string-literal-short-wstring.c
@@ -3,7 +3,7 @@
 
 int main() {
   // This should convert to utf8.
-  // CHECK: internal constant [10 x i8] c"\E1\84\A0\C8\A0\F4\82\80\B0\00", align 1
+  // CHECK: internal unnamed_addr constant [10 x i8] c"\E1\84\A0\C8\A0\F4\82\80\B0\00", align 1
   char b[10] = "\u1120\u0220\U00102030";
 
   // CHECK: private unnamed_addr constant [6 x i8] c"A\00B\00\00\00"
diff --git a/test/CodeGen/string-literal.c b/test/CodeGen/string-literal.c
index b5fa345bad..cc6c0943d9 100644
--- a/test/CodeGen/string-literal.c
+++ b/test/CodeGen/string-literal.c
@@ -1,11 +1,11 @@
 // RUN: %clang_cc1 -triple i386-unknown-unknown -emit-llvm %s -o - | FileCheck %s
 
 int main() {
-  // CHECK: internal constant [10 x i8] c"abc\00\00\00\00\00\00\00", align 1
+  // CHECK: internal unnamed_addr constant [10 x i8] c"abc\00\00\00\00\00\00\00", align 1
   char a[10] = "abc";
 
   // This should convert to utf8.
-  // CHECK: internal constant [10 x i8] c"\E1\84\A0\C8\A0\F4\82\80\B0\00", align 1
+  // CHECK: internal unnamed_addr constant [10 x i8] c"\E1\84\A0\C8\A0\F4\82\80\B0\00", align 1
   char b[10] = "\u1120\u0220\U00102030";
 
   // CHECK: private unnamed_addr constant [12 x i8] c"A\00\00\00B\00\00\00\00\00\00\00", align 1