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[COFF] Don't try to add quotes to already quoted linker directives

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If a linker directive is already quoted, don't try to quote it again, otherwise it creates a mess.
This pops up in places like:
#pragma comment(linker,"\"/foo bar'\"")

Differential Revision: http://reviews.llvm.org/D6792

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224998 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Michael Kuperstein 2014-12-30 19:23:48 +00:00
parent 88e5659aaf
commit 08c26613e1
2 changed files with 3 additions and 2 deletions
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2
lib/CodeGen/TargetLoweringObjectFileImpl.cpp
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@ -932,7 +932,7 @@ emitModuleFlags(MCStreamer &Streamer,
StringRef Op = MDOption->getString();
// Lead with a space for consistency with our dllexport implementation.
std::string Escaped(" ");
if (Op.find(" ") != StringRef::npos) {
if (!Op.startswith("\"") && (Op.find(" ") != StringRef::npos)) {
// The PE-COFF spec says args with spaces must be quoted. It doesn't say
// how to escape quotes, but it probably uses this algorithm:
// http://msdn.microsoft.com/en-us/library/17w5ykft(v=vs.85).aspx

3
test/MC/COFF/linker-options.ll
View File

@ -1,6 +1,6 @@
; RUN: llc -O0 -mtriple=i386-pc-win32 -filetype=asm -o - %s | FileCheck %s
!0 = !{i32 6, !"Linker Options", !{!{!"/DEFAULTLIB:msvcrt.lib"}, !{!"/DEFAULTLIB:msvcrt.lib", !"/DEFAULTLIB:secur32.lib"}, !{!"/DEFAULTLIB:C:\5Cpath to\5Casan_rt.lib"}, !{!"/with spaces"}}}
!0 = !{i32 6, !"Linker Options", !{!{!"/DEFAULTLIB:msvcrt.lib"}, !{!"/DEFAULTLIB:msvcrt.lib", !"/DEFAULTLIB:secur32.lib"}, !{!"/DEFAULTLIB:C:\5Cpath to\5Casan_rt.lib"}, !{!"/with spaces"}, !{!"\22/quoted spaces\22"}}}
!llvm.module.flags = !{ !0 }
@ -14,4 +14,5 @@ define dllexport void @foo() {
; CHECK: .ascii " /DEFAULTLIB:secur32.lib"
; CHECK: .ascii " \"/DEFAULTLIB:C:\\path to\\asan_rt.lib\""
; CHECK: .ascii " \"/with spaces\""
; CHECK: .ascii " \"/quoted spaces\""
; CHECK: .ascii " /EXPORT:_foo"