Bug 1290812 - Part 42: Implement the 64bit variant of AsmReinterpretFrom/To on mips32. r=bbouvier

---
 js/src/jit/mips32/CodeGenerator-mips32.cpp | 24 ++++++++++++++++++++++++
 js/src/jit/mips32/CodeGenerator-mips32.h   |  2 ++
 2 files changed, 26 insertions(+)

js/src/jit/mips32/CodeGenerator-mips32.cpp

@@ -590,6 +590,30 @@ CodeGeneratorMIPS::visitAsmSelectI64(LAsmSelectI64* lir)
     }
 }
 
+void
+CodeGeneratorMIPS::visitAsmReinterpretFromI64(LAsmReinterpretFromI64* lir)
+{
+    MOZ_ASSERT(lir->mir()->type() == MIRType::Double);
+    MOZ_ASSERT(lir->mir()->input()->type() == MIRType::Int64);
+    Register64 input = ToRegister64(lir->getInt64Operand(0));
+    FloatRegister output = ToFloatRegister(lir->output());
+
+    masm.moveToDoubleLo(input.low, output);
+    masm.moveToDoubleHi(input.high, output);
+}
+
+void
+CodeGeneratorMIPS::visitAsmReinterpretToI64(LAsmReinterpretToI64* lir)
+{
+    MOZ_ASSERT(lir->mir()->type() == MIRType::Int64);
+    MOZ_ASSERT(lir->mir()->input()->type() == MIRType::Double);
+    FloatRegister input = ToFloatRegister(lir->getOperand(0));
+    Register64 output = ToOutRegister64(lir);
+
+    masm.moveFromDoubleLo(input, output.low);
+    masm.moveFromDoubleHi(input, output.high);
+}
+
 void
 CodeGeneratorMIPS::visitExtendInt32ToInt64(LExtendInt32ToInt64* lir)
 {

js/src/jit/mips32/CodeGenerator-mips32.h

@@ -47,6 +47,8 @@ class CodeGeneratorMIPS : public CodeGeneratorMIPSShared
     void visitWasmLoadGlobalVarI64(LWasmLoadGlobalVarI64* ins);
     void visitWasmStoreGlobalVarI64(LWasmStoreGlobalVarI64* ins);
     void visitAsmSelectI64(LAsmSelectI64* lir);
+    void visitAsmReinterpretFromI64(LAsmReinterpretFromI64* lir);
+    void visitAsmReinterpretToI64(LAsmReinterpretToI64* lir);
     void visitExtendInt32ToInt64(LExtendInt32ToInt64* lir);
     void visitWrapInt64ToInt32(LWrapInt64ToInt32* lir);
     void visitClzI64(LClzI64* ins);