[PATCH] Imply linker arguments from '-fveclib' option.

[Michael Zolotukhin]

Hi hfinkel,

As discussed in D8097, we should provide corresponding linking flags when 'fveclib' is specified.

http://reviews.llvm.org/D8362

Files:
  lib/Driver/Tools.cpp
  test/Driver/fveclib.c

Index: lib/Driver/Tools.cpp
===================================================================
--- lib/Driver/Tools.cpp
+++ lib/Driver/Tools.cpp
@@ -6124,6 +6124,13 @@
     CmdArgs.push_back(Args.MakeArgString(std::string("-F") +
                                          (*it)->getValue()));
 
+  if (Arg *A = Args.getLastArg(options::OPT_fveclib)) {
+    if (A->getValue() == StringRef("Accelerate")) {
+      CmdArgs.push_back("-framework");
+      CmdArgs.push_back("Accelerate");
+    }
+  }
+
   const char *Exec =
     Args.MakeArgString(getToolChain().GetLinkerPath());
   std::unique_ptr<Command> Cmd =
Index: test/Driver/fveclib.c
===================================================================
--- test/Driver/fveclib.c
+++ test/Driver/fveclib.c
@@ -6,3 +6,6 @@
 // CHECK-ACCELERATE: "-fveclib=Accelerate"
 
 // CHECK-INVALID: error: invalid value 'something' in '-fveclib=something'
+
+// RUN: %clang -fveclib=Accelerate %s -target arm64-apple-ios8.0.0 -### 2>&1 | FileCheck --check-prefix=CHECK-LINK %s
+// CHECK-LINK: "-framework" "Accelerate"

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