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Bug 774330: Don't unnecessarily prevent code from entering the JIT with SPS enabled. r=luke

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This commit is contained in:
Alex Crichton 2012-07-16 18:07:10 -07:00
parent 7970571b2d
commit 3ee3fbd828
1 changed files with 7 additions and 1 deletions
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8
js/src/methodjit/Compiler.cpp
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@ -917,7 +917,13 @@ mjit::CanMethodJIT(JSContext *cx, JSScript *script, jsbytecode *pc,
if (!cx->methodJitEnabled)
return Compile_Abort;
if (frame->hasPushedSPSFrame())
/*
* If an SPS frame has already been pushed and profiling has since been
* turned off, then we can't enter the jit because the epilogue of a pop
* will not be emitted. Otherwise, we're safe with respect to balancing the
* push/pops to the SPS sampling stack.
*/
if (frame->hasPushedSPSFrame() && !cx->runtime->spsProfiler.enabled())
return Compile_Skipped;
if (script->hasJITInfo()) {