Fix -ftrap-function fallout from llvm r145714. <rdar://problem/10799325>

That llvm change removed the -trap-func backend option, so that using
-ftrap-function with clang would cause the backend to complain.  Fix it
by adding the trap function name to the CodeGenOptions and passing it through
to the TargetOptions.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149679 91177308-0d34-0410-b5e6-96231b3b80d8

3 files changed, 3 insertions, 6 deletions

diff --git a/lib/CodeGen/BackendUtil.cpp b/lib/CodeGen/BackendUtil.cpp
index c1636952da..1cbc69b03b 100644
--- a/lib/CodeGen/BackendUtil.cpp
+++ b/lib/CodeGen/BackendUtil.cpp
@@ -327,6 +327,7 @@ bool EmitAssemblyHelper::AddEmitPasses(BackendAction Action,
   Options.StackAlignmentOverride = CodeGenOpts.StackAlignment;
   Options.RealignStack = CodeGenOpts.StackRealignment;
   Options.DisableTailCalls = CodeGenOpts.DisableTailCalls;
+  Options.TrapFuncName = CodeGenOpts.TrapFuncName;
 
   TargetMachine *TM = TheTarget->createTargetMachine(Triple, TargetOpts.CPU,
                                                      FeaturesStr, Options,
diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp
index 97c3c69709..93dcd0d461 100644
--- a/lib/Driver/Tools.cpp
+++ b/lib/Driver/Tools.cpp
@@ -1947,12 +1947,7 @@ void Clang::ConstructJob(Compilation &C, const JobAction &JA,
     CmdArgs.push_back(A->getValue(Args));
   }
 
-  // Forward -ftrap_function= options to the backend.
-  if (Arg *A = Args.getLastArg(options::OPT_ftrap_function_EQ)) {
-    StringRef FuncName = A->getValue(Args);
-    CmdArgs.push_back("-backend-option");
-    CmdArgs.push_back(Args.MakeArgString("-trap-func=" + FuncName));
-  }
+  Args.AddLastArg(CmdArgs, options::OPT_ftrap_function_EQ);
 
   // -fno-strict-overflow implies -fwrapv if it isn't disabled, but
   // -fstrict-overflow won't turn off an explicitly enabled -fwrapv.
diff --git a/lib/Frontend/CompilerInvocation.cpp b/lib/Frontend/CompilerInvocation.cpp
index 2cb5c604ca..23fe830a03 100644
--- a/lib/Frontend/CompilerInvocation.cpp
+++ b/lib/Frontend/CompilerInvocation.cpp
@@ -1143,6 +1143,7 @@ static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK,
                       Args.hasArg(OPT_cl_fast_relaxed_math);
   Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
   Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic");
+  Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ);
 
   Opts.FunctionSections = Args.hasArg(OPT_ffunction_sections);
   Opts.DataSections = Args.hasArg(OPT_fdata_sections);