Florian Hahn 041da6277f Add !annotation metadata and remarks pass. ... This patch adds a new !annotation metadata kind which can be used to attach annotation strings to instructions. It also adds a new pass that emits summary remarks per function with the counts for each annotation kind. The intended uses cases for this new metadata is annotating 'interesting' instructions and the remarks should provide additional insight into transformations applied to a program. To motivate this, consider these specific questions we would like to get answered: * How many stores added for automatic variable initialization remain after optimizations? Where are they? * How many runtime checks inserted by a frontend could be eliminated? Where are the ones that did not get eliminated? Discussed on llvm-dev as part of 'RFC: Combining Annotation Metadata and Remarks' (http://lists.llvm.org/pipermail/llvm-dev/2020-November/146393.html) Reviewed By: thegameg, jdoerfert Differential Revision: https://reviews.llvm.org/D91188		2020-11-13 13:24:10 +00:00
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CMakeLists.txt	llvmbuildectomy - replace llvm-build by plain cmake	2020-11-13 10:35:24 +01:00
PassBuilder.cpp	Add !annotation metadata and remarks pass.	2020-11-13 13:24:10 +00:00
PassPlugin.cpp
PassRegistry.def	Add !annotation metadata and remarks pass.	2020-11-13 13:24:10 +00:00
StandardInstrumentations.cpp	Introduce -print-before-changed, making -print-changed also print before passes that modify IR	2020-11-12 15:20:50 +00:00