3 files changed, 21 insertions, 0 deletions
diff --git a/llvm/lib/Target/Mips/AsmParser/MipsAsmParser.cpp b/llvm/lib/Target/Mips/AsmParser/MipsAsmParser.cpp
index 0a9b36fba4a..4f7b8c4231d 100644
--- a/llvm/lib/Target/Mips/AsmParser/MipsAsmParser.cpp
+++ b/llvm/lib/Target/Mips/AsmParser/MipsAsmParser.cpp
@@ -177,6 +177,7 @@ class MipsAsmParser : public MCTargetAsmParser {
   const MCExpr *evaluateRelocExpr(const MCExpr *Expr, StringRef RelocStr);
 
   bool isEvaluated(const MCExpr *Expr);
+  bool parseSetMips0Directive();
   bool parseSetArchDirective();
   bool parseSetFeature(uint64_t Feature);
   bool parseDirectiveCPLoad(SMLoc Loc);
@@ -2731,6 +2732,19 @@ bool MipsAsmParser::parseSetAssignment() {
   return false;
 }
 
+bool MipsAsmParser::parseSetMips0Directive() {
+  Parser.Lex();
+  if (getLexer().isNot(AsmToken::EndOfStatement))
+    return reportParseError("unexpected token, expected end of statement");
+
+  // Reset assembler options to their initial values.
+  setAvailableFeatures(AssemblerOptions.front()->getFeatures());
+  AssemblerOptions.back()->setFeatures(AssemblerOptions.front()->getFeatures());
+
+  getTargetStreamer().emitDirectiveSetMips0();
+  return false;
+}
+
 bool MipsAsmParser::parseSetArchDirective() {
   Parser.Lex();
   if (getLexer().isNot(AsmToken::Equal))
@@ -2981,6 +2995,8 @@ bool MipsAsmParser::parseDirectiveSet() {
     return false;
   } else if (Tok.getString() == "micromips") {
     return parseSetFeature(Mips::FeatureMicroMips);
+  } else if (Tok.getString() == "mips0") {
+    return parseSetMips0Directive();
   } else if (Tok.getString() == "mips1") {
     return parseSetFeature(Mips::FeatureMips1);
   } else if (Tok.getString() == "mips2") {
diff --git a/llvm/lib/Target/Mips/MCTargetDesc/MipsTargetStreamer.cpp b/llvm/lib/Target/Mips/MCTargetDesc/MipsTargetStreamer.cpp
index ddeef289fd5..48e52a95ee0 100644
--- a/llvm/lib/Target/Mips/MCTargetDesc/MipsTargetStreamer.cpp
+++ b/llvm/lib/Target/Mips/MCTargetDesc/MipsTargetStreamer.cpp
@@ -59,6 +59,7 @@ void MipsTargetStreamer::emitFMask(unsigned FPUBitmask, int FPUTopSavedRegOff) {
 void MipsTargetStreamer::emitDirectiveSetArch(StringRef Arch) {
   forbidModuleDirective();
 }
+void MipsTargetStreamer::emitDirectiveSetMips0() {}
 void MipsTargetStreamer::emitDirectiveSetMips1() { forbidModuleDirective(); }
 void MipsTargetStreamer::emitDirectiveSetMips2() { forbidModuleDirective(); }
 void MipsTargetStreamer::emitDirectiveSetMips3() { forbidModuleDirective(); }
@@ -184,6 +185,8 @@ void MipsTargetAsmStreamer::emitDirectiveSetArch(StringRef Arch) {
   MipsTargetStreamer::emitDirectiveSetArch(Arch);
 }
 
+void MipsTargetAsmStreamer::emitDirectiveSetMips0() { OS << "\t.set\tmips0\n"; }
+
 void MipsTargetAsmStreamer::emitDirectiveSetMips1() {
   OS << "\t.set\tmips1\n";
   MipsTargetStreamer::emitDirectiveSetMips1();
diff --git a/llvm/lib/Target/Mips/MipsTargetStreamer.h b/llvm/lib/Target/Mips/MipsTargetStreamer.h
index 5da21e65899..182c526389e 100644
--- a/llvm/lib/Target/Mips/MipsTargetStreamer.h
+++ b/llvm/lib/Target/Mips/MipsTargetStreamer.h
@@ -49,6 +49,7 @@ public:
   virtual void emitFMask(unsigned FPUBitmask, int FPUTopSavedRegOff);
 
   virtual void emitDirectiveSetArch(StringRef Arch);
+  virtual void emitDirectiveSetMips0();
   virtual void emitDirectiveSetMips1();
   virtual void emitDirectiveSetMips2();
   virtual void emitDirectiveSetMips3();
@@ -151,6 +152,7 @@ public:
   void emitFMask(unsigned FPUBitmask, int FPUTopSavedRegOff) override;
 
   void emitDirectiveSetArch(StringRef Arch) override;
+  void emitDirectiveSetMips0() override;
   void emitDirectiveSetMips1() override;
   void emitDirectiveSetMips2() override;
   void emitDirectiveSetMips3() override;