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Bug 761914 (part 1) - Remove UpvarCookie::UPVAR_LEVEL_LIMIT. r=jorendorff.

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--HG--
extra : rebase_source : b5568305dbba62e8ee7ac65bd7104f66bc25c8b3
This commit is contained in:
Nicholas Nethercote 2012-06-07 18:39:20 -07:00
parent e2bcd0de61
commit 1d5b607ead
2 changed files with 3 additions and 11 deletions
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6
js/src/frontend/ParseNode.h
View File

@ -34,7 +34,6 @@ class UpvarCookie
void checkInvariants() {
JS_STATIC_ASSERT(sizeof(UpvarCookie) == sizeof(uint32_t));
JS_STATIC_ASSERT(UPVAR_LEVEL_LIMIT < FREE_LEVEL);
}
public:
@ -44,11 +43,6 @@ class UpvarCookie
*/
static const uint16_t FREE_LEVEL = 0x3fff;
/*
* If a function has a higher static level than this limit, we will not
* optimize it using UPVAR opcodes.
*/
static const uint16_t UPVAR_LEVEL_LIMIT = 16;
static const uint16_t CALLEE_SLOT = 0xffff;
static bool isLevelReserved(uint16_t level) { return level >= FREE_LEVEL; }

8
js/src/vm/Debugger.cpp
View File

@ -3360,9 +3360,8 @@ js::EvaluateInEnv(JSContext *cx, Handle<Env*> env, StackFrame *fp, const jschar
/*
* NB: This function breaks the assumption that the compiler can see all
* calls and properly compute a static level. In order to get around this,
* we use a static level that will cause us not to attempt to optimize
* variable references made by this frame.
* calls and properly compute a static level. In practice, any non-zero
* static level will suffice.
*/
JSPrincipals *prin = fp->scopeChain()->principals(cx);
bool compileAndGo = true;
@ -3371,8 +3370,7 @@ js::EvaluateInEnv(JSContext *cx, Handle<Env*> env, StackFrame *fp, const jschar
JSScript *script = frontend::CompileScript(cx, env, fp, prin, prin,
compileAndGo, noScriptRval, needScriptGlobal,
chars, length, filename, lineno,
cx->findVersion(), NULL,
UpvarCookie::UPVAR_LEVEL_LIMIT);
cx->findVersion(), NULL, /* staticLimit = */ 1);
if (!script)
return false;