Add a bailout id just before every variable load in fullcode.

src/mips/full-codegen-mips.cc

Index: src/mips/full-codegen-mips.cc
diff --git a/src/mips/full-codegen-mips.cc b/src/mips/full-codegen-mips.cc
index 69d0011de76d9943019e5083ec201ebda44c35f7..2ab103da433c9214ed1caa6d29abb28cc56c3d47 100644
--- a/src/mips/full-codegen-mips.cc
+++ b/src/mips/full-codegen-mips.cc
@@ -1477,6 +1477,7 @@ void FullCodeGenerator::EmitDynamicLookupFastCase(VariableProxy* proxy,
 void FullCodeGenerator::EmitVariableLoad(VariableProxy* proxy) {
   // Record position before possible IC call.
   SetSourcePosition(proxy->position());
+  PrepareForBailoutForId(proxy->BeforeId(), NO_REGISTERS);
   Variable* var = proxy->var();
 
   // Three cases: global variables, lookup variables, and all other types of