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Jeremy Morse f08c337615 Re-land ae4303b42c, "Track PHI values through register coalescing"
Was reverted in 0507fc2ffc9, in phi-coalesce-subreg.mir I'd explicitly named
some passes to run instead of specifying a range. As a result some
two-address-instrs weren't correctly rewritten and the verifier got upset.
Original commit message:

[DebugInstrRef][2/3] Track PHI values through register coalescing

In the instruction referencing variable location model, we store variable
locations that point at PHIs in MachineFunction during register allocation.
Unfortunately, register coalescing can substantially change the locations
of registers, and so that PHI-variable-location side table needs
maintenence during the pass.

This patch builds an index from the side table, and whenever a vreg gets
coalesced into another vreg, update the index to record the new vreg that
the PHI happens in. It also accepts a limited range of subregister
coalescing, for example merging a subregister into a larger class.

Differential Revision: https://reviews.llvm.org/D86813
2021-06-04 11:32:02 +01:00
benchmarks
bindings [SanitizeCoverage] Add support for NoSanitizeCoverage function attribute 2021-05-25 12:57:14 +02:00
cmake [CMake][ELF] Add -fno-semantic-interposition for GCC and Clang>=13 2021-06-03 15:26:34 -07:00
docs [TargetLowering] Only inspect attributes in the arguments for ArgListEntry 2021-06-03 15:52:01 -07:00
examples [ORC] Update SpeculativeJIT example for dispatchTask changes in 5344c88dcb2. 2021-05-10 09:30:46 -07:00
include Revert "[llvm] llvm-tapi-diff" 2021-06-03 21:10:51 -07:00
lib Re-land ae4303b42c, "Track PHI values through register coalescing" 2021-06-04 11:32:02 +01:00
projects llvmbuildectomy - replace llvm-build by plain cmake 2020-11-13 10:35:24 +01:00
resources
runtimes [runtimes] Add the libc project to the list of runtimes. 2021-03-23 17:33:03 +00:00
test Re-land ae4303b42c, "Track PHI values through register coalescing" 2021-06-04 11:32:02 +01:00
tools Revert "[llvm] llvm-tapi-diff" 2021-06-03 21:10:51 -07:00
unittests [GlobalISel] Add G_SBFX/G_UBFX to computeKnownBits 2021-06-03 16:01:47 -04:00
utils Add LLDB in release binaries by default 2021-06-04 11:57:00 +05:00
.clang-format
.clang-tidy - Update .clang-tidy to ignore parameters of main like functions for naming violations in clang and llvm directory 2020-01-31 16:49:45 +00:00
.gitattributes Fix the "git modified" issue on the preserve-comments-crlf.s. 2019-09-10 12:17:49 +00:00
.gitignore Remove .gitignore entries not relevant in the monorepo. 2021-04-07 12:25:02 -07:00
CMakeLists.txt [CMake] Don't LTO optimize targets that aren't part of any distribution 2021-05-19 15:02:11 -07:00
CODE_OWNERS.TXT [M68k][CODE_OWNERS](0/8) Add code owner for the M68k target 2021-03-08 12:30:56 -08:00
configure
CREDITS.TXT Update personal info in CREDITS.TXT 2021-04-11 19:25:02 +08:00
LICENSE.TXT Fix typos throughout the license files that somehow I and my reviewers 2019-01-21 09:52:34 +00:00
llvm.spec.in Update structured references to the license to the new license. 2019-01-19 11:30:51 +00:00
README.txt Test commit. 2020-03-14 18:08:26 -07:00
RELEASE_TESTERS.TXT Update the list of platforms & archs 2018-12-16 14:47:16 +00:00

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