[turbofan] Add initial support for SOFT deopts.

src/compiler/mips/code-generator-mips.cc

Index: src/compiler/mips/code-generator-mips.cc
diff --git a/src/compiler/mips/code-generator-mips.cc b/src/compiler/mips/code-generator-mips.cc
index ff46f698fb13e094214b6265a482c457fb32b25b..70fd567693644775a7735e519365bd6f33c94f79 100644
--- a/src/compiler/mips/code-generator-mips.cc
+++ b/src/compiler/mips/code-generator-mips.cc
@@ -577,7 +577,9 @@ void CodeGenerator::AssembleArchInstruction(Instruction* instr) {
     case kArchDeoptimize: {
       int deopt_state_id =
           BuildTranslation(instr, -1, 0, OutputFrameStateCombine::Ignore());
-      AssembleDeoptimizerCall(deopt_state_id, Deoptimizer::EAGER);
+      Deoptimizer::BailoutType bailout_type =
+          Deoptimizer::BailoutType(MiscField::decode(instr->opcode()));
+      AssembleDeoptimizerCall(deopt_state_id, bailout_type);
       break;
     }
     case kArchRet: