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MIPS: Count-based profiling for primitive functions (hidden behind a flag)

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Port r10657 (92073cf).

BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/9383003
Patch from Daniel Kalmar <kalmard@homejinni.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10677 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This commit is contained in:
jkummerow@chromium.org 2012-02-10 16:26:55 +00:00
parent 384cc7fce2
commit 7c695dcfa9
1 changed files with 22 additions and 1 deletions
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23
src/mips/full-codegen-mips.cc
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@ -1,4 +1,4 @@
// Copyright 2011 the V8 project authors. All rights reserved.
// Copyright 2012 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
@ -149,6 +149,27 @@ void FullCodeGenerator::Generate(CompilationInfo* info) {
}
#endif
// We can optionally optimize based on counters rather than statistical
// sampling.
if (info->ShouldSelfOptimize()) {
if (FLAG_trace_opt) {
PrintF("[adding self-optimization header to %s]\n",
*info->function()->debug_name()->ToCString());
}
MaybeObject* maybe_cell = isolate()->heap()->AllocateJSGlobalPropertyCell(
Smi::FromInt(Compiler::kCallsUntilPrimitiveOpt));
JSGlobalPropertyCell* cell;
if (maybe_cell->To(&cell)) {
__ li(a2, Handle<JSGlobalPropertyCell>(cell));
__ lw(a3, FieldMemOperand(a2, JSGlobalPropertyCell::kValueOffset));
__ Subu(a3, a3, Operand(Smi::FromInt(1)));
__ sw(a3, FieldMemOperand(a2, JSGlobalPropertyCell::kValueOffset));
Handle<Code> compile_stub(
isolate()->builtins()->builtin(Builtins::kLazyRecompile));
__ Jump(compile_stub, RelocInfo::CODE_TARGET, eq, a3, Operand(zero_reg));
}
}
// Strict mode functions and builtins need to replace the receiver
// with undefined when called as functions (without an explicit
// receiver object). t1 is zero for method calls and non-zero for