r313102 - [Driver] MinGW: Remove custom linker detection

[Martell Malone via cfe-commits]

Author: martell
Date: Tue Sep 12 17:46:54 2017
New Revision: 313102

URL: http://llvm.org/viewvc/llvm-project?rev=313102&view=rev
Log:
[Driver] MinGW: Remove custom linker detection

In rL289668 the ability to specify the default linker at compile time
was added but because the MinGW driver used custom detection we could
not take advantage of this new CMAKE flag CLANG_DEFAULT_LINKER.

This is a re-apply of rL313082 which was reverted in rL313088
due to failing buildbot tests.

Differential Revision: https://reviews.llvm.org/D37727

Modified:
    cfe/trunk/lib/Driver/ToolChains/MinGW.cpp
    cfe/trunk/test/Driver/mingw-useld.c

Modified: cfe/trunk/lib/Driver/ToolChains/MinGW.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Driver/ToolChains/MinGW.cpp?rev=313102&r1=313101&r2=313102&view=diff
==============================================================================
--- cfe/trunk/lib/Driver/ToolChains/MinGW.cpp (original)
+++ cfe/trunk/lib/Driver/ToolChains/MinGW.cpp Tue Sep 12 17:46:54 2017
@@ -104,14 +104,6 @@ void tools::MinGW::Linker::ConstructJob(
   // handled somewhere else.
   Args.ClaimAllArgs(options::OPT_w);
 
-  StringRef LinkerName = Args.getLastArgValue(options::OPT_fuse_ld_EQ, "ld");
-  if (LinkerName.equals_lower("lld")) {
-    CmdArgs.push_back("-flavor");
-    CmdArgs.push_back("gnu");
-  } else if (!LinkerName.equals_lower("ld")) {
-    D.Diag(diag::err_drv_unsupported_linker) << LinkerName;
-  }
-
   if (!D.SysRoot.empty())
     CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));
 
@@ -241,7 +233,7 @@ void tools::MinGW::Linker::ConstructJob(
 
       if (Args.hasArg(options::OPT_static))
         CmdArgs.push_back("--end-group");
-      else if (!LinkerName.equals_lower("lld"))
+      else
         AddLibGCC(Args, CmdArgs);
     }
 
@@ -252,7 +244,7 @@ void tools::MinGW::Linker::ConstructJob(
       CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crtend.o")));
     }
   }
-  const char *Exec = Args.MakeArgString(TC.GetProgramPath(LinkerName.data()));
+  const char *Exec = Args.MakeArgString(TC.GetLinkerPath());
   C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
 }
 

Modified: cfe/trunk/test/Driver/mingw-useld.c
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/mingw-useld.c?rev=313102&r1=313101&r2=313102&view=diff
==============================================================================
--- cfe/trunk/test/Driver/mingw-useld.c (original)
+++ cfe/trunk/test/Driver/mingw-useld.c Tue Sep 12 17:46:54 2017
@@ -1,19 +1,19 @@
-// RUN: %clang -### -target i686-pc-windows-gnu --sysroot=%S/Inputs/mingw_clang_tree/mingw32 %s 2>&1 | FileCheck -check-prefix=CHECK_LD_32 %s
-// CHECK_LD_32: ld{{(.exe)?}}"
+// RUN: %clang -### -target i686-pc-windows-gnu -fuse-ld=platform --sysroot=%S/Inputs/mingw_clang_tree/mingw32 %s 2>&1 | FileCheck -check-prefix=CHECK_LD_32 %s
+// CHECK_LD_32: "{{[^"]*}}ld{{(.exe)?}}"
 // CHECK_LD_32: "i386pe"
-// CHECK_LD_32-NOT: "-flavor" "gnu"
+// CHECK_LD_32-NOT: "{{[^"]*}}ld.lld{{(.exe)?}}"
 
-// RUN: %clang -### -target i686-pc-windows-gnu --sysroot=%S/Inputs/mingw_clang_tree/mingw32 %s -fuse-ld=lld 2>&1 | FileCheck -check-prefix=CHECK_LLD_32 %s
+// RUN: %clang -### -target i686-pc-windows-gnu -fuse-ld=lld --sysroot=%S/Inputs/mingw_clang_tree/mingw32 %s 2>&1 | FileCheck -check-prefix=CHECK_LLD_32 %s
 // CHECK_LLD_32-NOT: invalid linker name in argument
-// CHECK_LLD_32: lld{{(.exe)?}}" "-flavor" "gnu"
+// CHECK_LLD_32: "{{[^"]*}}ld.lld{{(.exe)?}}"
 // CHECK_LLD_32: "i386pe"
 
-// RUN: %clang -### -target x86_64-pc-windows-gnu --sysroot=%S/Inputs/mingw_clang_tree/mingw32 %s -fuse-ld=lld 2>&1 | FileCheck -check-prefix=CHECK_LLD_64 %s
+// RUN: %clang -### -target x86_64-pc-windows-gnu -fuse-ld=lld --sysroot=%S/Inputs/mingw_clang_tree/mingw32 %s 2>&1 | FileCheck -check-prefix=CHECK_LLD_64 %s
 // CHECK_LLD_64-NOT: invalid linker name in argument
-// CHECK_LLD_64: lld{{(.exe)?}}" "-flavor" "gnu"
+// CHECK_LLD_64: "{{[^"]*}}ld.lld{{(.exe)?}}"
 // CHECK_LLD_64: "i386pep"
 
-// RUN: %clang -### -target arm-pc-windows-gnu --sysroot=%S/Inputs/mingw_clang_tree/mingw32 %s -fuse-ld=lld 2>&1 | FileCheck -check-prefix=CHECK_LLD_ARM %s
+// RUN: %clang -### -target arm-pc-windows-gnu -fuse-ld=lld --sysroot=%S/Inputs/mingw_clang_tree/mingw32 %s 2>&1 | FileCheck -check-prefix=CHECK_LLD_ARM %s
 // CHECK_LLD_ARM-NOT: invalid linker name in argument
-// CHECK_LLD_ARM: lld{{(.exe)?}}" "-flavor" "gnu"
+// CHECK_LLD_ARM: "{{[^"]*}}ld.lld{{(.exe)?}}"
 // CHECK_LLD_ARM: "thumb2pe"