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Bug 849469 - Refactor how IC stubs are attached. (r=nbp)

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This commit is contained in:
Shu-yu Guo 2013-03-26 15:23:12 -07:00
parent 9e1c1b230c
commit b29fb42d7c
2 changed files with 613 additions and 527 deletions
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1111
js/src/ion/IonCaches.cpp
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29
js/src/ion/IonCaches.h
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@ -112,6 +112,8 @@ class IonCacheVisitor
class IonCache
{
public:
class StubAttacher;
enum Kind {
# define DEFINE_CACHEKINDS(ickind) Cache_##ickind,
IONCACHE_KIND_LIST(DEFINE_CACHEKINDS)
@ -158,14 +160,6 @@ class IonCache
JSScript *script;
jsbytecode *pc;
private:
static const size_t MAX_STUBS;
void incrementStubCount() {
// The IC should stop generating stubs before wrapping stubCount.
stubCount_++;
JS_ASSERT(stubCount_);
}
CodeLocationLabel fallbackLabel() const {
return fallbackLabel_;
}
@ -179,6 +173,14 @@ class IonCache
return CodeLocationLabel(ptr);
}
private:
static const size_t MAX_STUBS;
void incrementStubCount() {
// The IC should stop generating stubs before wrapping stubCount.
stubCount_++;
JS_ASSERT(stubCount_);
}
public:
IonCache()
@ -238,17 +240,14 @@ class IonCache
// this function returns CACHE_FLUSHED. In case of allocation issue this
// function returns LINK_ERROR.
LinkStatus linkCode(JSContext *cx, MacroAssembler &masm, IonScript *ion, IonCode **code);
// Fixup variables and update jumps in the list of stubs. Increment the
// number of attached stubs accordingly.
void attachStub(MacroAssembler &masm, IonCode *code, CodeOffsetJump &rejoinOffset,
CodeOffsetJump *exitOffset, CodeOffsetLabel *stubOffset = NULL);
void attachStub(MacroAssembler &masm, StubAttacher &patcher, IonCode *code);
// Combine both linkCode and attachStub into one function. In addition, it
// Combine both linkStub and attachStub into one function. In addition, it
// produces a spew augmented with the attachKind string.
bool linkAndAttachStub(JSContext *cx, MacroAssembler &masm, IonScript *ion,
const char *attachKind, CodeOffsetJump &rejoinOffset,
CodeOffsetJump *exitOffset, CodeOffsetLabel *stubOffset = NULL);
bool linkAndAttachStub(JSContext *cx, MacroAssembler &masm, StubAttacher &patcher,
IonScript *ion, const char *attachKind);
bool pure() {
return pure_;