[PATCH] D110514: MIPS: Triple::setArch as R6 if MipsSubArch_r6

[YunQiang Su via Phabricator via llvm-commits]

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Currently,

  clang -target mipsisa64r6-linux-gnu -mabi=32

will generate a r2 32bit object instead expected r6 one.

The reason is that for some R6 <https://reviews.llvm.org/source/compiler-rt/> triples, the ArchName and ArchTypeName are different:

  ArchTypeName has only 4 choice: mips, mipsel, mips64, mips64el, 
  ArchName may be something like mipsisa{32,64}r6{,el}  


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D110514

Files:
  llvm/lib/Support/Triple.cpp


Index: llvm/lib/Support/Triple.cpp
===================================================================
--- llvm/lib/Support/Triple.cpp
+++ llvm/lib/Support/Triple.cpp
@@ -1206,6 +1206,24 @@
 }
 
 void Triple::setArch(ArchType Kind) {
+  if (getSubArch() == Triple::MipsSubArch_r6) {
+    switch (Kind) {
+    case Triple::mips:
+      setArchName("mipsisa32r6");
+      return;
+    case Triple::mipsel:
+      setArchName("mipsisa32r6el");
+      return;
+    case Triple::mips64:
+      setArchName("mipsisa64r6");
+      return;
+    case Triple::mips64el:
+      setArchName("mipsisa64r6el");
+      return;
+    default:
+      llvm_unreachable("unexpected Triple for MIPS r6");
+    }
+  }
   setArchName(getArchTypeName(Kind));
 }
 


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