Wenlei He ac4e5a38c8 [CSSPGO] Use merged base profile for hot threshold calculation ... Context-sensitive profile effectively split a function profile into many copies each representing the CFG profile of a particular calling context. That makes the count distribution looks more flat as we now have more function profiles each with lower counts, which in turn leads to lower hot thresholds. Now we tells threshold computation to merge context profile first before calculating percentile based cutoffs to compensate for seemingly flat context profile. This can be controlled by swtich `sample-profile-contextless-threshold`. Earlier measurement showed ~0.4% perf boost with this tuning on spec2k6 for CSSPGO (with pseudo-probe and new inliner). Differential Revision: https://reviews.llvm.org/D95980		2021-02-05 17:51:00 -08:00
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llvm	[CSSPGO] Use merged base profile for hot threshold calculation	2021-02-05 17:51:00 -08:00
llvm-c	[llvm-c] Move LLVMX86_AMXTypeKind & LLVMPoisonValueValueKind to the bottom to avoid value changes compared with LLVM<=11	2021-01-27 16:28:04 -08:00