[PATCH] D15130: Fix the clang driver when "-nostdlib" is present

[Sumanth Gundapaneni via cfe-commits]

sgundapa updated this revision to Diff 41582.

http://reviews.llvm.org/D15130

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

Index: test/Driver/nostdlib.c
===================================================================
--- test/Driver/nostdlib.c
+++ test/Driver/nostdlib.c
@@ -9,3 +9,19 @@
 // RUN: %clang -### -nostartfiles -nostdlib -target i386-apple-darwin %s \
 // RUN:   2>&1 | FileCheck %s -check-prefix=ARGSCLAIMED
 // ARGSCLAIMED-NOT: warning:
+
+// In the presence of -nostdlib, the standard libraries should not be
+// passed down to link line
+// RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
+// RUN:     -target i686-pc-linux-gnu -nostdlib --rtlib=compiler-rt \
+// RUN:     -resource-dir=%S/Inputs/resource_dir -lclang_rt.builtins-i686 \
+// RUN:   | FileCheck --check-prefix=CHECK-LINUX-NOSTDLIB %s
+//
+// RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
+// RUN:     -target i686-pc-linux-gnu --rtlib=compiler-rt -nostdlib \
+// RUN:     -resource-dir=%S/Inputs/resource_dir -lclang_rt.builtins-i686 \
+// RUN:   | FileCheck --check-prefix=CHECK-LINUX-NOSTDLIB %s
+//
+// CHECK-LINUX-NOSTDLIB: warning: argument unused during compilation: '--rtlib=compiler-rt'
+// CHECK-LINUX-NOSTDLIB: "{{(.*[^.0-9A-Z_a-z])?}}ld{{(.exe)?}}"
+// CHECK-LINUX-NOSTDLIB-NOT: "{{.*}}/Inputs/resource_dir{{/|\\\\}}lib{{/|\\\\}}linux{{/|\\\\}}libclang_rt.builtins-i686.a"
Index: lib/Driver/Tools.cpp
===================================================================
--- lib/Driver/Tools.cpp
+++ lib/Driver/Tools.cpp
@@ -8694,8 +8694,7 @@
       if (!isAndroid)
         CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtn.o")));
     }
-  } else if (Args.hasArg(options::OPT_rtlib_EQ))
-    AddRunTimeLibs(ToolChain, D, CmdArgs, Args);
+  }
 
   C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
 }


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