[turbofan] Collect invocation counts and compute relative call frequencies.

src/full-codegen/mips/full-codegen-mips.cc

Index: src/full-codegen/mips/full-codegen-mips.cc
diff --git a/src/full-codegen/mips/full-codegen-mips.cc b/src/full-codegen/mips/full-codegen-mips.cc
index e3c9dfb1812ecec21240fbf418ad311f614c1fc1..0d25774b0523116ccd61bf7b2446ed65dbf7f235 100644
--- a/src/full-codegen/mips/full-codegen-mips.cc
+++ b/src/full-codegen/mips/full-codegen-mips.cc
@@ -137,6 +137,17 @@ void FullCodeGenerator::Generate() {
   info->set_prologue_offset(masm_->pc_offset());
   __ Prologue(info->GeneratePreagedPrologue());
 
+  // Increment invocation count for the function.
+  __ lw(a0, FieldMemOperand(a1, JSFunction::kLiteralsOffset));
+  __ lw(a0, FieldMemOperand(a0, LiteralsArray::kFeedbackVectorOffset));
+  __ lw(t0, FieldMemOperand(
+                a0, TypeFeedbackVector::kInvocationCountIndex * kPointerSize +
+                        TypeFeedbackVector::kHeaderSize));
+  __ Addu(t0, t0, Operand(Smi::FromInt(1)));
+  __ sw(t0, FieldMemOperand(
+                a0, TypeFeedbackVector::kInvocationCountIndex * kPointerSize +
+                        TypeFeedbackVector::kHeaderSize));
+
   { Comment cmnt(masm_, "[ Allocate locals");
     int locals_count = info->scope()->num_stack_slots();
     // Generators allocate locals, if any, in context slots.