[mips][ias] Enable IAS by default for N64 on Debian mips64el.

Unfortunately we can't enable it for all N64 because it is not yet possible to distinguish N32 from N64 from the triple on other environments. N64 has been confirmed to produce identical (within reason) objects to GAS during stage 2 of compiler recursion on N64-abi Fedora. Unfortunately, Fedora's triples do not distinguish N32 from N64 so I can't enable it by default there. I'm currently repeating this testing for Debian mips64el but it's very unlikely to produce a different result. Patch by: Daniel Sanders Reviewers: sdardis Differential Review: https://reviews.llvm.org/D22679 llvm-svn: 281610
llvm · Sep 15, 2016 · 9edf96e · 9edf96e
1 parent fc3f8f5
commit 9edf96e
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/clang/lib/Driver/ToolChains.cpp b/clang/lib/Driver/ToolChains.cpp
@@ -2778,6 +2778,13 @@ bool Generic_GCC::IsIntegratedAssemblerDefault() const {
   case llvm::Triple::mips:
   case llvm::Triple::mipsel:
     return true;
+  case llvm::Triple::mips64:
+  case llvm::Triple::mips64el:
+    // Enabled for Debian mips64/mips64el only. Other targets are unable to
+    // distinguish N32 from N64.
+    if (getTriple().getEnvironment() == llvm::Triple::GNUABI64)
+      return true;
+    return false;
   default:
     return false;
   }