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to reflect the new license.
We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.
Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.
llvm-svn: 351636
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Summary: This allows to remove `using namespace llvm;` in those *.cpp files
When we want to revisit the decision (everything resides in llvm::mca::*) in the future, we can move things to a nested namespace of llvm::mca::, to conceptually make them separate from the rest of llvm::mca::*
Reviewers: andreadb, mattd
Reviewed By: andreadb
Subscribers: javed.absar, tschuett, gbedwell, llvm-commits
Differential Revision: https://reviews.llvm.org/D53407
llvm-svn: 345612
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namespace llvm prefixes. NFC
llvm-svn: 344916
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Class SourceMgr now uses type ArrayRef<MCInst> to reference the
sequence of code from a "CodeRegion".
llvm-svn: 344911
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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
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