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fschneider@chromium.org authored
Changes the way we do lazy deoptimization: 1. For side-effect instructions, we insert the lazy-deopt call at the following LLazyBailout instruction. CALL GAP LAZY-BAILOUT ==> lazy-deopt-call 2. For other instructions (StackCheck) we insert it right after the instruction since the deopt targets an earlier deoptimization environment. STACK-CHECK GAP ==> lazy-deopt-call The pc of the lazy-deopt call that will be patched in is recorded in the deoptimization input data. Each Lithium instruction can have 0..n safepoints. All safepoints get the deoptimization index of the associated LAZY-BAILOUT instruction. On lazy deoptimization we use the return-pc to find the safepoint. The safepoint tells us the deoptimization index, which in turn finds us the PC where to insert the lazy-deopt-call. Additional changes: * RegExpLiteral marked it as having side-effects so that it gets an explicitlazy-bailout instruction (instead of treating it specially like stack-checks) * Enable target recording CallFunctionStub to achieve more inlining on optimized code. BUG=v8:1789 TEST=jslint and uglify run without crashing, mjsunit/compiler/regress-lazy-deopt.js Review URL: http://codereview.chromium.org/8492004 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10006 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
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