fix PR10415, tidying up IR representation of module level inline asm

to avoid extraneous \n's.

llvm-svn: 135862

2 files changed, 11 insertions, 0 deletions

diff --git a/clang/lib/CodeGen/CodeGenModule.cpp b/clang/lib/CodeGen/CodeGenModule.cpp
index a4fce926ec2..d7b6c7ec3df 100644
--- a/clang/lib/CodeGen/CodeGenModule.cpp
+++ b/clang/lib/CodeGen/CodeGenModule.cpp
@@ -2186,6 +2186,8 @@ void CodeGenModule::EmitTopLevelDecl(Decl *D) {
     const std::string &S = getModule().getModuleInlineAsm();
     if (S.empty())
       getModule().setModuleInlineAsm(AsmString);
+    else if (*--S.end() == '\n')
+      getModule().setModuleInlineAsm(S + AsmString.str());
     else
       getModule().setModuleInlineAsm(S + '\n' + AsmString.str());
     break;
diff --git a/clang/test/CodeGen/asm.c b/clang/test/CodeGen/asm.c
index 7199f09e1a3..a2d56c84f46 100644
--- a/clang/test/CodeGen/asm.c
+++ b/clang/test/CodeGen/asm.c
@@ -1,4 +1,13 @@
 // RUN: %clang_cc1 -triple i386-unknown-unknown -emit-llvm %s -o - | FileCheck %s
+
+// PR10415
+__asm__ ("foo1");
+__asm__ ("foo2");
+__asm__ ("foo3");
+// CHECK: module asm "foo1"
+// CHECK-NEXT: module asm "foo2"
+// CHECK-NEXT: module asm "foo3"
+
 void t1(int len) {
   __asm__ volatile("" : "=&r"(len), "+&r"(len));
 }