From 82b69fa1058706a31500fe12b05b9c26c6b1899c Mon Sep 17 00:00:00 2001
From: Saleem Abdulrasool <compnerd@compnerd.org>
Date: Sun, 4 May 2014 00:03:48 +0000
Subject: X86: repair export compatibility with MinGW/cygwin

Both MinGW and cygwin (i686) construct export directives without the global
leader prefix.  This is mostly due to the fact that they use GNU ld which does
not correctly handle the export directive.  This apparently has been been broken
for a while.  However, this was recently reported as being broken by
mingwandroid and diorcety of the msys2 project.

Remove the global leader prefix if targeting MinGW or cygwin, otherwise, retain
the global leader prefix.  Add an explicit test for cygwin's behaviour of export
directives.

llvm-svn: 207926
---
 llvm/test/CodeGen/X86/dllexport.ll | 77 ++++++++++++++++++++------------------
 1 file changed, 41 insertions(+), 36 deletions(-)

(limited to 'llvm/test/CodeGen/X86/dllexport.ll')

diff --git a/llvm/test/CodeGen/X86/dllexport.ll b/llvm/test/CodeGen/X86/dllexport.ll
index eba6d6946e9..6103a412112 100644
--- a/llvm/test/CodeGen/X86/dllexport.ll
+++ b/llvm/test/CodeGen/X86/dllexport.ll
@@ -1,5 +1,9 @@
-; RUN: llc -mtriple i386-pc-win32 < %s | FileCheck -check-prefix=CHECK -check-prefix=WIN32 %s
-; RUN: llc -mtriple i386-pc-mingw32 < %s | FileCheck -check-prefix=CHECK -check-prefix=MINGW %s
+; RUN: llc -mtriple i386-pc-win32 < %s \
+; RUN:    | FileCheck -check-prefix CHECK -check-prefix CHECK-CL %s
+; RUN: llc -mtriple i386-pc-mingw32 < %s \
+; RUN:    | FileCheck -check-prefix CHECK -check-prefix CHECK-GCC %s
+; RUN: llc -mtriple i686-pc-cygwin %s -o - \
+; RUN:    | FileCheck -check-prefix CHECK -check-prefix CHECK-GCC %s
 
 ; CHECK: .text
 
@@ -89,37 +93,38 @@ define weak_odr dllexport void @weak1() {
 
 
 ; CHECK: .section .drectve
-; WIN32: /EXPORT:_Var1,DATA
-; WIN32: /EXPORT:_Var2,DATA
-; WIN32: /EXPORT:_Var3,DATA
-; WIN32: /EXPORT:_WeakVar1,DATA
-; WIN32: /EXPORT:_WeakVar2,DATA
-; WIN32: /EXPORT:_f1
-; WIN32: /EXPORT:_f2
-; WIN32: /EXPORT:_stdfun@0
-; WIN32: /EXPORT:@fastfun@0
-; WIN32: /EXPORT:_thisfun
-; WIN32: /EXPORT:_lnk1
-; WIN32: /EXPORT:_lnk2
-; WIN32: /EXPORT:_weak1
-; WIN32: /EXPORT:_alias
-; WIN32: /EXPORT:_alias2
-; WIN32: /EXPORT:_alias3
-; WIN32: /EXPORT:_weak_alias
-; MINGW: -export:_Var1,data
-; MINGW: -export:_Var2,data
-; MINGW: -export:_Var3,data
-; MINGW: -export:_WeakVar1,data
-; MINGW: -export:_WeakVar2,data
-; MINGW: -export:_f1
-; MINGW: -export:_f2
-; MINGW: -export:_stdfun@0
-; MINGW: -export:@fastfun@0
-; MINGW: -export:_thisfun
-; MINGW: -export:_lnk1
-; MINGW: -export:_lnk2
-; MINGW: -export:_weak1
-; MINGW: -export:_alias
-; MINGW: -export:_alias2
-; MINGW: -export:_alias3
-; MINGW: -export:_weak_alias
+; CHECK-CL: /EXPORT:_Var1,DATA
+; CHECK-CL: /EXPORT:_Var2,DATA
+; CHECK-CL: /EXPORT:_Var3,DATA
+; CHECK-CL: /EXPORT:_WeakVar1,DATA
+; CHECK-CL: /EXPORT:_WeakVar2,DATA
+; CHECK-CL: /EXPORT:_f1
+; CHECK-CL: /EXPORT:_f2
+; CHECK-CL: /EXPORT:_stdfun@0
+; CHECK-CL: /EXPORT:@fastfun@0
+; CHECK-CL: /EXPORT:_thisfun
+; CHECK-CL: /EXPORT:_lnk1
+; CHECK-CL: /EXPORT:_lnk2
+; CHECK-CL: /EXPORT:_weak1
+; CHECK-CL: /EXPORT:_alias
+; CHECK-CL: /EXPORT:_alias2
+; CHECK-CL: /EXPORT:_alias3
+; CHECK-CL: /EXPORT:_weak_alias
+; CHECK-GCC: -export:Var1,data
+; CHECK-GCC: -export:Var2,data
+; CHECK-GCC: -export:Var3,data
+; CHECK-GCC: -export:WeakVar1,data
+; CHECK-GCC: -export:WeakVar2,data
+; CHECK-GCC: -export:f1
+; CHECK-GCC: -export:f2
+; CHECK-GCC: -export:stdfun@0
+; CHECK-GCC: -export:@fastfun@0
+; CHECK-GCC: -export:thisfun
+; CHECK-GCC: -export:lnk1
+; CHECK-GCC: -export:lnk2
+; CHECK-GCC: -export:weak1
+; CHECK-GCC: -export:alias
+; CHECK-GCC: -export:alias2
+; CHECK-GCC: -export:alias3
+; CHECK-GCC: -export:weak_alias
+
-- 
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