Commit Graph

11 Commits

Author SHA1 Message Date
Matt Arsenault 66251f7e1d RegAllocFast: Record internal state based on register units
Record internal state based on register units. This is often more
efficient as there are typically fewer register units to update
compared to iterating over all the aliases of a register.

Original patch by Matthias Braun, but I've been rebasing and fixing it
for almost 2 years and fixed a few bugs causing intermediate failures
to make this patch independent of the changes in
https://reviews.llvm.org/D52010.
2020-06-03 16:51:46 -04:00
Matt Arsenault b6c599afd3 Reapply r359906, "RegAllocFast: Add heuristic to detect values not live-out of a block"
This reverts commit r359912.

This should pass now, since the clang test was made less fragile in
r359918.

llvm-svn: 359919
2019-05-03 19:06:57 +00:00
Nico Weber bb852a9672 Revert r359906, "RegAllocFast: Add heuristic to detect values not live-out of a block"
Makes clang/test/Misc/backend-stack-frame-diagnostics-fallback.cpp fail.

llvm-svn: 359912
2019-05-03 18:08:03 +00:00
Matt Arsenault daf2d653fa RegAllocFast: Add heuristic to detect values not live-out of a block
Add an improved/new heuristic to catch more cases when values are not
live out of a basic block.

Patch by Matthias Braun

llvm-svn: 359906
2019-05-03 17:03:24 +00:00
Stefan Pintilie 46f840f286 [PowerPC] Make no-PIC default to match GCC - LLVM
Change the default for PowerPC LE to -fno-PIC.

Differential Revision: https://reviews.llvm.org/D53383

llvm-svn: 348298
2018-12-04 20:14:57 +00:00
Stefan Pintilie 9004444d81 Revert "[PowerPC] Make no-PIC default to match GCC - LLVM"
This reverts commit r347069

llvm-svn: 347076
2018-11-16 19:24:23 +00:00
Stefan Pintilie 046eff502f [PowerPC] Make no-PIC default to match GCC - LLVM
Set -fno-PIC as the default option.

Differential Revision: https://reviews.llvm.org/D53383

llvm-svn: 347069
2018-11-16 18:36:21 +00:00
Puyan Lotfi 43e94b15ea Followup on Proposal to move MIR physical register namespace to '$' sigil.
Discussed here:

http://lists.llvm.org/pipermail/llvm-dev/2018-January/120320.html

In preparation for adding support for named vregs we are changing the sigil for
physical registers in MIR to '$' from '%'. This will prevent name clashes of
named physical register with named vregs.

llvm-svn: 323922
2018-01-31 22:04:26 +00:00
Francis Visoiu Mistrih 25528d6de7 [CodeGen] Unify MBB reference format in both MIR and debug output
As part of the unification of the debug format and the MIR format, print
MBB references as '%bb.5'.

The MIR printer prints the IR name of a MBB only for block definitions.

* find . \( -name "*.mir" -o -name "*.cpp" -o -name "*.h" -o -name "*.ll" \) -type f -print0 | xargs -0 sed -i '' -E 's/BB#" << ([a-zA-Z0-9_]+)->getNumber\(\)/" << printMBBReference(*\1)/g'
* find . \( -name "*.mir" -o -name "*.cpp" -o -name "*.h" -o -name "*.ll" \) -type f -print0 | xargs -0 sed -i '' -E 's/BB#" << ([a-zA-Z0-9_]+)\.getNumber\(\)/" << printMBBReference(\1)/g'
* find . \( -name "*.txt" -o -name "*.s" -o -name "*.mir" -o -name "*.cpp" -o -name "*.h" -o -name "*.ll" \) -type f -print0 | xargs -0 sed -i '' -E 's/BB#([0-9]+)/%bb.\1/g'
* grep -nr 'BB#' and fix

Differential Revision: https://reviews.llvm.org/D40422

llvm-svn: 319665
2017-12-04 17:18:51 +00:00
Francis Visoiu Mistrih 9d7bb0cb40 [CodeGen] Print register names in lowercase in both MIR and debug output
As part of the unification of the debug format and the MIR format,
always print registers as lowercase.

* Only debug printing is affected. It now follows MIR.

Differential Revision: https://reviews.llvm.org/D40417

llvm-svn: 319187
2017-11-28 17:15:09 +00:00
Amaury Sechet 9df26d330f Fix typo in test filename. NFC
llvm-svn: 294860
2017-02-11 17:48:49 +00:00