Do not mangle in MS-way the globals with magic \001 in the name.

Based on the patch by David Nadlinger!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179889 91177308-0d34-0410-b5e6-96231b3b80d8

test/CodeGen/X86/stdcall.ll

@@ -1,16 +1,24 @@
-; RUN: llc < %s | FileCheck %s
+; RUN: llc -mtriple="i386-pc-mingw32" < %s | FileCheck %s
 ; PR5851
 
-target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-f80:128:128-v64:64:64-v128:128:128-a0:0:64-f80:32:32-n8:16:32"
-target triple = "i386-pc-mingw32"
-
 %0 = type { void (...)* }
 
+define internal x86_stdcallcc void @MyFunc() nounwind {
+entry:
+; CHECK: MyFunc@0:
+; CHECK: ret
+  ret void
+}
+
+; PR14410
+define x86_stdcallcc i32 @"\01DoNotMangle"(i32 %a) {
+; CHECK: DoNotMangle:
+; CHECK: ret $4
+entry:
+  ret i32 %a
+}
+
 @B = global %0 { void (...)* bitcast (void ()* @MyFunc to void (...)*) }, align 4
 ; CHECK: _B:
 ; CHECK: .long _MyFunc@0
 
-define internal x86_stdcallcc void @MyFunc() nounwind {
-entry:
-  ret void
-}