[turbofan] Make sure there is space for lazy deopt patching before the constant pool.

src/compiler/code-generator.cc

Index: src/compiler/code-generator.cc
diff --git a/src/compiler/code-generator.cc b/src/compiler/code-generator.cc
index 44e3b9dc9d708378b0c1b60b215d3e762756c26f..72c6ec984af552e9528ee8f126c64f2557e20c50 100644
--- a/src/compiler/code-generator.cc
+++ b/src/compiler/code-generator.cc
@@ -85,8 +85,6 @@ Handle<Code> CodeGenerator::GenerateCode() {
     }
   }
 
-  FinishCode(masm());
-
   // Ensure there is space for lazy deoptimization in the code.
   if (!info->IsStub()) {
     int target_offset = masm()->pc_offset() + Deoptimizer::patch_size();
@@ -95,6 +93,8 @@ Handle<Code> CodeGenerator::GenerateCode() {
     }
   }
 
+  FinishCode(masm());
+
   safepoints()->Emit(masm(), frame()->GetSpillSlotCount());
 
   // TODO(titzer): what are the right code flags here?