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zhengxing.li authored
port fd8fd05c (r34014) original commit message: This functionality is useful for stubs that need to walk the stack. The new machine operator, LoadParentFramePointer dosn't force the currently compiling method to have a frame in contrast to LoadFramePointer. Instead, it adapts accordingly when frame elision is possible, making efficient stack walks possible without incurring a performance penalty for small stubs that can benefit from frame elision. BUG= Review URL: https://codereview.chromium.org/1705673002 Cr-Commit-Position: refs/heads/master@{#34064}
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