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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hello,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>This patch is an implementation of module inliner pass with a greedy call site queue. This <o:p></o:p></p><p class=MsoNormal>greedy inliner reuses the existing SCC inliner to do the local decision and inlining work. It can <o:p></o:p></p><p class=MsoNormal>improve Aarch64 SPEC2000 eon 16% and mesa 5% compared with LLVM with default inliner on <o:p></o:p></p><p class=MsoNormal>a real cortex-a53 devices. (-O3 -mllvm -inline-perf-mode=true -mllvm -greedy-inliner=true)<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Compared with SCC inliner, which is bottom up fixed order, the greedy inliner utilizes a global <o:p></o:p></p><p class=MsoNormal>Call site queue with greedy weight computation algorithm to provide more flexible in the call <o:p></o:p></p><p class=MsoNormal>site decision. It can be implemented as top-down order or any other order you like to do inlining <o:p></o:p></p><p class=MsoNormal>work. And the speed of greedy inliner is almost as same as the SCC inliner. Because the different<o:p></o:p></p><p class=MsoNormal>order setup, this inliner could be an alternative solution to bring up performance or reduce code <o:p></o:p></p><p class=MsoNormal>size. In our experiment, this greedy inliner also did better jobs in –Os mode over the default LLVM<o:p></o:p></p><p class=MsoNormal>inliner.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='color:#1F497D'>It contains the clang changes. </span>Please give a review.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Yin Ma<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>