wine/gecko
0
0
Fork 0
mirror of https://gitlab.winehq.org/wine/wine-gecko.git synced 2024-09-13 09:24:08 -07:00
Code Issues Packages Projects Releases Wiki Activity

[INFER] Don't use invalid ICs when compiling a callee triggers recompilation of the caller.

Browse Source
This commit is contained in:
Brian Hackett 2010-12-20 12:39:19 -08:00
parent 637c0ef693
commit d566506458
1 changed files with 7 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
js/src/methodjit/MonoIC.cpp
View File

@ -846,7 +846,8 @@ class CallCompiler : public BaseCompiler
void *update()
{
JITScript *jit = f.jit();
JSStackFrame *fp = f.fp();
JITScript *jit = fp->jit();
uint32 recompilations = jit->recompilations;
stubs::UncachedCallResult ucr;
@ -855,10 +856,11 @@ class CallCompiler : public BaseCompiler
else
stubs::UncachedCallHelper(f, ic.frameSize.getArgc(f), &ucr);
// if the helper invoked the function, it may have triggered recompilation
// of this script, invaliding the IC.
if (!ucr.codeAddr && f.jit()->recompilations != recompilations)
return NULL;
// Watch out in case the IC was invalidated by a recompilation on the calling
// script. This can happen either if the callee is executed or if it compiles
// and the compilation has a static overflow.
if (fp->jit()->recompilations != recompilations)
return ucr.codeAddr;
// If the function cannot be jitted (generally unjittable or empty script),
// patch this site to go to a slow path always.