[Driver] Pass -fexperimental-strict-floating-point to cc1 if it is specified

[Jim]

Summary

In my case, it has to enable strict floating-point by driver for default unsupported target.

[kpn]

Test case?

[craig.topper]

Isn't OPT_fexperimental_strict_floating_point marked as a CC1Option in Options.td. Can the driver even recognize it?

Can you use -Xclang -fexperimental-strict-floating-point for your use case?

[Jim]

In D98923#2638061, @craig.topper wrote:

Isn't OPT_fexperimental_strict_floating_point marked as a CC1Option in Options.td. Can the driver even recognize it?

Can you use -Xclang -fexperimental-strict-floating-point for your use case?

Hi, Thanks your suggestion, I would use -Xclang -fexperimental-strict-floating-point for my test case.

clang/lib/Driver/ToolChains/Clang.cpp

#endif
   if (Arg *A = Args.getLastArg(options::OPT_fconstexpr_steps_EQ)) {
     CmdArgs.push_back("-fconstexpr-steps");
     CmdArgs.push_back(A->getValue());
   }
 
   if (Args.hasArg(options::OPT_fexperimental_new_constant_interpreter))
     CmdArgs.push_back("-fexperimental-new-constant-interpreter");
 
+  if (Args.hasArg(options::OPT_fexperimental_strict_floating_point))
+    CmdArgs.push_back("-fexperimental-strict-floating-point");
+
   if (Arg *A = Args.getLastArg(options::OPT_fbracket_depth_EQ)) {
     CmdArgs.push_back("-fbracket-depth");
     CmdArgs.push_back(A->getValue());
   }
 
   if (Arg *A = Args.getLastArg(options::OPT_Wlarge_by_value_copy_EQ,
                                options::OPT_Wlarge_by_value_copy_def)) {
     if (A->getNumValues()) {