[driver] Don't try to generate diagnostic information for linker crashes.

rdar://10993648



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@152180 91177308-0d34-0410-b5e6-96231b3b80d8

include/clang/Driver/Tool.h

@@ -49,6 +49,7 @@ public:
 
   virtual bool hasIntegratedAssembler() const { return false; }
   virtual bool hasIntegratedCPP() const = 0;
+  virtual bool isLinkJob() const { return false; }
 
   /// \brief Does this tool have "good" standardized diagnostics, or should the
   /// driver add an additional "command failed" diagnostic on failures.

lib/Driver/Driver.cpp

@@ -375,6 +375,10 @@ Compilation *Driver::BuildCompilation(ArrayRef<const char *> ArgList) {
 void Driver::generateCompilationDiagnostics(Compilation &C,
                                             const Command *FailingCommand) {
   if (C.getArgs().hasArg(options::OPT_fno_crash_diagnostics))
+    return;  
+
+  // Don't try to generate diagnostics for link jobs.
+  if (FailingCommand->getCreator().isLinkJob())
     return;
 
   Diag(clang::diag::note_drv_command_failed_diag_msg)

lib/Driver/Tools.h

@@ -148,6 +148,7 @@ namespace gcc {
                                        "linker (via gcc)", TC) {}
 
     virtual bool hasIntegratedCPP() const { return false; }
+    virtual bool isLinkJob() const { return true; }
 
     virtual void RenderExtraToolArgs(const JobAction &JA,
                                      ArgStringList &CmdArgs) const;
@@ -179,6 +180,7 @@ namespace hexagon {
       "hexagon-ld", TC) {}
 
     virtual bool hasIntegratedCPP() const { return false; }
+    virtual bool isLinkJob() const { return true; }
 
     virtual void RenderExtraToolArgs(const JobAction &JA,
                                      ArgStringList &CmdArgs) const;
@@ -285,6 +287,7 @@ namespace darwin {
     Link(const ToolChain &TC) : DarwinTool("darwin::Link", "linker", TC) {}
 
     virtual bool hasIntegratedCPP() const { return false; }
+    virtual bool isLinkJob() const { return true; }
 
     virtual void ConstructJob(Compilation &C, const JobAction &JA,
                               const InputInfo &Output,
@@ -356,6 +359,7 @@ namespace openbsd {
     Link(const ToolChain &TC) : Tool("openbsd::Link", "linker", TC) {}
 
     virtual bool hasIntegratedCPP() const { return false; }
+    virtual bool isLinkJob() const { return true; }
 
     virtual void ConstructJob(Compilation &C, const JobAction &JA,
                               const InputInfo &Output,
@@ -385,6 +389,7 @@ namespace freebsd {
     Link(const ToolChain &TC) : Tool("freebsd::Link", "linker", TC) {}
 
     virtual bool hasIntegratedCPP() const { return false; }
+    virtual bool isLinkJob() const { return true; }
 
     virtual void ConstructJob(Compilation &C, const JobAction &JA,
                               const InputInfo &Output,
@@ -417,6 +422,7 @@ namespace netbsd {
       : Tool("netbsd::Link", "linker", TC) {}
 
     virtual bool hasIntegratedCPP() const { return false; }
+    virtual bool isLinkJob() const { return true; }
 
     virtual void ConstructJob(Compilation &C, const JobAction &JA,
                               const InputInfo &Output,
@@ -446,6 +452,7 @@ namespace linuxtools {
     Link(const ToolChain &TC) : Tool("linux::Link", "linker", TC) {}
 
     virtual bool hasIntegratedCPP() const { return false; }
+    virtual bool isLinkJob() const { return true; }
 
     virtual void ConstructJob(Compilation &C, const JobAction &JA,
                               const InputInfo &Output,
@@ -474,6 +481,7 @@ namespace minix {
     Link(const ToolChain &TC) : Tool("minix::Link", "linker", TC) {}
 
     virtual bool hasIntegratedCPP() const { return false; }
+    virtual bool isLinkJob() const { return true; }
 
     virtual void ConstructJob(Compilation &C, const JobAction &JA,
                               const InputInfo &Output,
@@ -503,6 +511,7 @@ namespace solaris {
     Link(const ToolChain &TC) : Tool("solaris::Link", "linker", TC) {}
 
     virtual bool hasIntegratedCPP() const { return false; }
+    virtual bool isLinkJob() const { return true; }
 
     virtual void ConstructJob(Compilation &C, const JobAction &JA,
                               const InputInfo &Output,
@@ -532,6 +541,7 @@ namespace auroraux {
     Link(const ToolChain &TC) : Tool("auroraux::Link", "linker", TC) {}
 
     virtual bool hasIntegratedCPP() const { return false; }
+    virtual bool isLinkJob() const { return true; }
 
     virtual void ConstructJob(Compilation &C, const JobAction &JA,
                               const InputInfo &Output,
@@ -561,6 +571,7 @@ namespace dragonfly {
     Link(const ToolChain &TC) : Tool("dragonfly::Link", "linker", TC) {}
 
     virtual bool hasIntegratedCPP() const { return false; }
+    virtual bool isLinkJob() const { return true; }
 
     virtual void ConstructJob(Compilation &C, const JobAction &JA,
                               const InputInfo &Output,
@@ -577,6 +588,7 @@ namespace visualstudio {
     Link(const ToolChain &TC) : Tool("visualstudio::Link", "linker", TC) {}
 
     virtual bool hasIntegratedCPP() const { return false; }
+    virtual bool isLinkJob() const { return true; }
 
     virtual void ConstructJob(Compilation &C, const JobAction &JA,
                               const InputInfo &Output,