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mstarzinger authored
This adds an explicit {OsrPoll} bytecode into every loop header which triggers on-stack replacement when armed. Note that each such bytecode stores the static loop depths as an operand, and hence can be armed for specific loop depths. This also adds builtin code that triggers OSR compilation and switches execution over to optimized code in case compilation succeeds. In case compilation fails, the bytecode dispatch just continues unhindered. R=rmcilroy@chromium.org TEST=mjsunit/ignition/osr-from-bytecode BUG=v8:4764 Review-Url: https://codereview.chromium.org/2172233002 Cr-Commit-Position: refs/heads/master@{#38043}
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