commit ac24bb53bb5424b7bb4db4414f988a27182cd70c
author Mandeep Singh Grang <mgrang@codeaurora.org> Sun Feb 25 03:58:23 2018 +0000
committer Mandeep Singh Grang <mgrang@codeaurora.org> Sun Feb 25 03:58:23 2018 +0000
tree 0e5fea48e756ba429ec6aa06af14122b5e7e387c
parent 295e8b4e1223569b7760a38a6a482cc0b63f389e

[RISCV] Enable __int128_t and __uint128_t through clang flag

Summary:
If the flag -fforce-enable-int128 is passed, it will enable support for __int128_t and __uint128_t types.
This flag can then be used to build compiler-rt for RISCV32.

Reviewers: asb, kito-cheng, apazos, efriedma

Reviewed By: asb, efriedma

Subscribers: shiva0217, efriedma, jfb, dschuff, sdardis, sbc100, jgravelle-google, aheejin, rbar, johnrusso, simoncook, jordy.potman.lists, sabuasal, niosHD, cfe-commits

Differential Revision: https://reviews.llvm.org/D43105

llvm-svn: 326045

clang/lib/Basic/Targets/Mips.h

diff --git a/clang/lib/Basic/Targets/Mips.h b/clang/lib/Basic/Targets/Mips.h
index 24f0186..ff9e790 100644
--- a/clang/lib/Basic/Targets/Mips.h
+++ b/clang/lib/Basic/Targets/Mips.h
@@ -392,7 +392,9 @@
     return llvm::makeArrayRef(NewABIRegAliases);
   }
 
-  bool hasInt128Type() const override { return ABI == "n32" || ABI == "n64"; }
+  bool hasInt128Type() const override {
+    return (ABI == "n32" || ABI == "n64") || getTargetOpts().ForceEnableInt128;
+  }
 
   bool validateTarget(DiagnosticsEngine &Diags) const override;
 };

clang/lib/Driver/ToolChains/Clang.cpp

diff --git a/clang/lib/Driver/ToolChains/Clang.cpp b/clang/lib/Driver/ToolChains/Clang.cpp
index e24164b..a19c503 100644
--- a/clang/lib/Driver/ToolChains/Clang.cpp
+++ b/clang/lib/Driver/ToolChains/Clang.cpp
@@ -4750,6 +4750,12 @@
     }
   }
 
+  if (Arg *A = Args.getLastArg(options::OPT_fforce_enable_int128,
+                               options::OPT_fno_force_enable_int128)) {
+    if (A->getOption().matches(options::OPT_fforce_enable_int128))
+      CmdArgs.push_back("-fforce-enable-int128");
+  }
+
   // Finally add the compile command to the compilation.
   if (Args.hasArg(options::OPT__SLASH_fallback) &&
       Output.getType() == types::TY_Object &&

clang/lib/Frontend/CompilerInvocation.cpp

diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp
index 956c333..443c550 100644
--- a/clang/lib/Frontend/CompilerInvocation.cpp
+++ b/clang/lib/Frontend/CompilerInvocation.cpp
@@ -2781,6 +2781,7 @@
   if (Opts.Triple.empty())
     Opts.Triple = llvm::sys::getDefaultTargetTriple();
   Opts.OpenCLExtensionsAsWritten = Args.getAllArgValues(OPT_cl_ext_EQ);
+  Opts.ForceEnableInt128 = Args.hasArg(OPT_fforce_enable_int128);
 }
 
 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,