tree d3a01025303b7ffe8d61e9e9bce81f0bbaeadf89
parent b7aa0f9e4e8ce3e878e710d1efe9d48b7f2654d7
author msaboff@apple.com <msaboff@apple.com@268f45cc-cd09-0410-ab3c-d52691b4dbfc> 1392079654 +0000
committer msaboff@apple.com <msaboff@apple.com@268f45cc-cd09-0410-ab3c-d52691b4dbfc> 1392079654 +0000

Fail FTL compilation if the required stack is too big
https://bugs.webkit.org/show_bug.cgi?id=128560

Reviewed by Filip Pizlo.

Added StackSize struct to FTLStackMaps and populated it.  Added and updated
related dump functions.  Use the stack size found at the end of the compilation
to compare against the value of a new option, llvmMaxStackSize.  We fail the
compile if the function's stack size is greater than llvmMaxStackSize.

* dfg/DFGPlan.cpp:
(JSC::DFG::Plan::compileInThreadImpl):
* ftl/FTLStackMaps.cpp:
(JSC::FTL::StackMaps::StackSize::parse):
(JSC::FTL::StackMaps::StackSize::dump):
(JSC::FTL::StackMaps::parse):
(JSC::FTL::StackMaps::dump):
(JSC::FTL::StackMaps::dumpMultiline):
(JSC::FTL::StackMaps::getStackSize):
* ftl/FTLStackMaps.h:
* runtime/Options.h:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@163838 268f45cc-cd09-0410-ab3c-d52691b4dbfc