Andrea Di Biagio 66e474bb74 [llvm-mca] Add the ability to mark regions of code for analysis (PR36875) ... This patch teaches llvm-mca how to parse code comments in search for special "markers" used to select regions of code. Example: # LLVM-MCA-BEGIN My Code Region .... # LLVM-MCA-END The MCAsmLexer now delegates to an object of class MCACommentParser (i.e. an AsmCommentConsumer) the parsing of code comments to search for begin/end code region markers. A comment starting with substring "LLVM-MCA-BEGIN" marks the beginning of a new region of code. A comment starting with substring "LLVM-MCA-END" marks the end of the last region. This implementation doesn't allow regions to overlap. Each region can have a optional description; internally, each region is identified by a range of source code locations (SMLoc). MCInst objects are added to a region R only if the source location for the MCInst is in the range of locations specified by R. By default, the tool allocates an implicit "Default" code region which contains every source location. See new tests llvm-mca-marker-*.s for a few examples. A new Backend object is created for every region. So, the analysis is conducted on every parsed code region. The final report is the union of the reports generated for every code region. Note that empty regions are skipped. Special "[#] Code Region - ..." strings are used in the report to mark the portion which is specific to a code region only. For example, see llvm-mca-markers-5.s. Differential Revision: https://reviews.llvm.org/D45433 llvm-svn: 329590		2018-04-09 16:39:52 +00:00
..
bugpoint	Fix a couple of layering violations in Transforms	2018-03-21 22:34:23 +00:00
bugpoint-passes	Remove redundant includes from tools.	2017-12-13 21:31:10 +00:00
dsymutil	[dsymutil] Remove trailing colon. NFC	2018-04-09 09:10:34 +00:00
gold	Revert r324557, "gold-plugin: Do not set codegen opt level based on LTO opt level."	2018-04-06 21:14:33 +00:00
llc	Pass a module reference to CloneModule.	2018-02-14 19:50:40 +00:00
lli	[ORC] Create a new SymbolStringPool by default in ExecutionSession constructor.	2018-04-02 20:57:56 +00:00
llvm-ar	[llvm-ar] Support multiple dashed options	2018-03-28 17:21:14 +00:00
llvm-as	Pass a reference to a module to the bitcode writer.	2018-02-14 19:11:32 +00:00
llvm-as-fuzzer	cmake: Invent add_llvm_fuzzer to set up fuzzer targets	2017-08-31 00:36:33 +00:00
llvm-bcanalyzer	[ThinLTO/CFI] Include TYPE_ID summaries into GLOBALVAL_SUMMARY_BLOCK	2018-02-14 22:41:15 +00:00
llvm-c-test	[LLVM-C] Move DIBuilder Bindings For Block Scopes	2018-04-07 06:07:55 +00:00
llvm-cat	Pass a reference to a module to the bitcode writer.	2018-02-14 19:11:32 +00:00
llvm-cfi-verify	Fix broken builds due to mismatched min/max types	2018-02-02 00:07:14 +00:00
llvm-config	[tools] Change std::sort to llvm::sort in response to r327219	2018-04-01 21:24:53 +00:00
llvm-cov	[llvm-cov] Implement -ignore-filename-regex= option for excluding source files.	2018-04-09 15:20:35 +00:00
llvm-cvtres	llvm-cvtres: Mention ARM64 as a supported machine type in the help text. NFC.	2018-02-27 20:44:33 +00:00
llvm-cxxdump	Fix more inconsistent line endings. NFC.	2017-12-18 19:46:56 +00:00
llvm-cxxfilt	Add opt-viewer testing	2017-11-29 17:07:41 +00:00
llvm-demangle-fuzzer	llvm-demangle-fuzzer: Link in Support	2017-11-17 20:46:55 +00:00
llvm-diff	Remove redundant includes from tools.	2017-12-13 21:31:10 +00:00
llvm-dis	[Support] Rename tool_output_file to ToolOutputFile, NFC	2017-09-23 01:03:17 +00:00
llvm-dwarfdump	[DebugInfo/AccelTable] Fix inconsistency in getDIEOffset implementations	2018-03-09 11:58:59 +00:00
llvm-dwp	DWARF: Unify form size handling code	2018-03-14 09:39:54 +00:00
llvm-exegesis	[llvm-exegesis] Fix unused return value warning and add a useful error message for event counter reads.	2018-04-07 11:37:21 +00:00
llvm-extract	[llvm-extract] Support extracting basic blocks	2018-01-23 21:51:34 +00:00
llvm-go	Update some code.google.com links	2017-11-13 23:47:58 +00:00
llvm-isel-fuzzer	[llvm-opt-fuzzer] Avoid adding incorrect inputs to the fuzzer corpus	2018-02-05 11:05:47 +00:00
llvm-jitlistener	Search for llvm-symbolizer binary in the same directory as argv[0], before	2016-06-09 00:53:21 +00:00
llvm-link	Revert "[IRMover] Implement name based structure type mapping"	2018-02-21 20:12:18 +00:00
llvm-lto	[ThinLTO] Added a couple of C LTO API interfaces to control the cache policy.	2018-03-02 03:51:27 +00:00
llvm-lto2	[ThinLTO] Always create linked objects file for --thinlto-index-only=	2018-02-22 19:06:15 +00:00
llvm-mc	Reapply "[DWARFv5] Emit file 0 to the line table."	2018-03-29 17:16:41 +00:00
llvm-mc-assemble-fuzzer	Rename MCTargetOptionsCommandFlags.h to .def as it is not a normal/modular header as much as it is for stamping out some global/static variables	2017-11-27 19:55:16 +00:00
llvm-mc-disassemble-fuzzer	cmake: Invent add_llvm_fuzzer to set up fuzzer targets	2017-08-31 00:36:33 +00:00
llvm-mca	[llvm-mca] Add the ability to mark regions of code for analysis (PR36875)	2018-04-09 16:39:52 +00:00
llvm-modextract	Pass a reference to a module to the bitcode writer.	2018-02-14 19:11:32 +00:00
llvm-mt	[Option] Add 'findNearest' method to catch typos	2018-01-05 17:10:39 +00:00
llvm-nm	[tools] Change std::sort to llvm::sort in response to r327219	2018-04-01 21:24:53 +00:00
llvm-objcopy	[llvm-objcopy] Implement support for section groups	2018-03-21 19:53:44 +00:00
llvm-objdump	[tools] Change std::sort to llvm::sort in response to r327219	2018-04-01 21:24:53 +00:00
llvm-opt-fuzzer	Pass a reference to a module to the bitcode writer.	2018-02-14 19:11:32 +00:00
llvm-opt-report	Don't call exit from cl::PrintHelpMessage.	2017-09-07 23:30:48 +00:00
llvm-pdbutil	[llvm-pdbutil] Display types from MSVC precompiled header object files.	2018-04-05 18:18:12 +00:00
llvm-profdata	[llvm-profdata] Don't treat non-fatal merge errors as fatal	2017-11-17 21:18:32 +00:00
llvm-rc	Fix typos of occurred and occurrence	2018-01-24 10:33:39 +00:00
llvm-readobj	[llvm-pdbutil] Display types from MSVC precompiled header object files.	2018-04-05 18:18:12 +00:00
llvm-rtdyld	[llvm-rtdyld] Fix the InputFileList cl::opt description: it accepts multiple	2018-03-31 16:01:01 +00:00
llvm-shlib	Rename llvm library from libLLVM-X.Y to libLLVM-X	2018-03-29 09:44:09 +00:00
llvm-size	Fix more inconsistent line endings. NFC.	2017-12-18 19:46:56 +00:00
llvm-special-case-list-fuzzer	[llvm-special-case-list-fuzzer] Add fuzz target.	2017-10-17 17:43:34 +00:00
llvm-split	Pass a reference to a module to the bitcode writer.	2018-02-14 19:11:32 +00:00
llvm-stress	[Support] Rename tool_output_file to ToolOutputFile, NFC	2017-09-23 01:03:17 +00:00
llvm-strings	[llvm-strings] Add support for the -a/--all options	2017-11-14 19:58:36 +00:00
llvm-symbolizer	Use itaniumDemangle in llvm-symbolizer	2018-03-07 23:07:34 +00:00
llvm-xray	[tools] Change std::sort to llvm::sort in response to r327219	2018-04-01 21:24:53 +00:00
lto	[ThinLTO] Added a couple of C LTO API interfaces to control the cache policy.	2018-03-02 03:51:27 +00:00
msbuild	Create msbuild only when using MSVC	2017-03-16 20:24:14 +00:00
obj2yaml	[WebAssembly] Identify COMDATs by index rather than string. NFC	2018-03-14 15:44:45 +00:00
opt	Re-land r329273: [Plugins] Add a slim plugin API to work together with the new PM	2018-04-05 15:04:13 +00:00
opt-viewer	[opt-viewer] Kill parser processes before moving onto rendering	2018-02-26 21:15:51 +00:00
sancov	Remove redundant includes from tools.	2017-12-13 21:31:10 +00:00
sanstats	Fix broken links to the Itanium CXX ABI	2017-09-12 00:19:11 +00:00
verify-uselistorder	Pass a reference to a module to the bitcode writer.	2018-02-14 19:11:32 +00:00
xcode-toolchain	[llvm] Add stripped installation targets	2017-11-30 21:48:26 +00:00
yaml2obj	[tools] Change std::sort to llvm::sort in response to r327219	2018-04-01 21:24:53 +00:00
CMakeLists.txt	Fixup r271533, or check-clang didn't find llvm-lto as the target.	2016-06-02 20:39:24 +00:00
LLVMBuild.txt	Re-land r329156 "Add llvm-exegesis tool."	2018-04-04 11:37:06 +00:00