Commit Graph

34 Commits

Author SHA1 Message Date
Simon Dardis ef41f6a573 [mips] Accept but ignore -m(no-)branch-likely
-mbranch-likely and -mno-branch-likely are used in some build systems for
some MIPS targets. Accept these options but ignore them as they are an
(de)optimiztion hint, and that branch likely instructions were deprecated
but not removed from MIPS32 and MIPS64 ISAs.

Reviewers: atanasyan, nitesh.jain

Differential Revision: https://reviews.llvm.org/D38168

llvm-svn: 314213
2017-09-26 15:01:21 +00:00
Petar Jovanovic 5076511ed6 [mips] Introducing option -mabs=[legacy/2008]
In patch r205628 using abs.[ds] instruction is forced, as they should behave
in accordance with flags Has2008 and ABS2008. Unfortunately for revisions
prior mips32r6 and mips64r6, abs.[ds] is not generating correct result when
working with NaNs. To generate a sequence which always produce a correct
result but also to allow user more control on how his code is compiled,
option -mabs is added where user can choose legacy or 2008.
By default legacy mode is used on revisions prior R6. Mips32r6 and mips64r6
use abs2008 mode by default.

Patch by Aleksandar Beserminji

Differential Revision: https://reviews.llvm.org/D35982

llvm-svn: 311669
2017-08-24 16:06:30 +00:00
Simon Dardis ad9d05de8f [mips] Support implicit gpopt with N64 when using -fno-pic
As clang defaults to -mno-abicalls when using -fno-pic for N64, implicitly use
-mgpopt in that case.

Reviewers: atanasyan

Differential Revision: https://reviews.llvm.org/D36315

llvm-svn: 310714
2017-08-11 15:01:34 +00:00
Simon Atanasyan c038841e8b [mips] Show warning in case of mixing -mlong-calls and -mabicalls options
While we do not support `-mshared / -mno-shared` properly, show warning
and ignore `-mlong-calls` option in case of implicitly or explicitly
provided `-mabicalls` option.

Differential revision: https://reviews.llvm.org/D36551

llvm-svn: 310614
2017-08-10 15:42:25 +00:00
Simon Atanasyan 3306e3a8e8 [mips] Notify user that `-mabicalls` is ignored on non-PIC N64 ABI
The -mabicalls option does not make sense in the case of non position
independent code for the N64 ABI. After this change the driver shows a
warning that -mabicalls is ignored in that case.

Differential revision: https://reviews.llvm.org/D36550

llvm-svn: 310613
2017-08-10 15:42:16 +00:00
Simon Dardis eeed000f62 [mips] Add support -m(no-)embedded-data option
Add support for the -membedded-data option which places constant data in
the .rodata section, rather than the .sdata section.

Reviewers: atanasyan, nitesh.jain

Differential Revision: https://reviews.llvm.org/D35914

llvm-svn: 309935
2017-08-03 13:04:29 +00:00
Simon Dardis 7d31878674 [mips] Add support for -m(no-)extern-data.
Add support for -m(no-)extern-data when using -mgpopt in the driver. It is
enabled by default in the backend.

Reviewers: atanasyan, slthakur

Differential Revision: https://reviews.llvm.org/D35550

llvm-svn: 308879
2017-07-24 14:02:09 +00:00
Simon Dardis 9f1d5d8cd5 [mips] Add support for -m(no-)local-sdata
Teach the driver to support -mlocal-sdata. The backend already matches GCC's
default behaviour.

Reviewers: atanasyan, slthakur

Differential Revision: https://reviews.llvm.org/D35549

llvm-svn: 308683
2017-07-20 22:23:21 +00:00
Simon Dardis 31636a1fd9 Reland "[mips] Teach the driver to accept -m(no-)gpopt."
This patch teaches the driver to pass -mgpopt by default to the backend when it
is supported, i.e. we are using -mno-abicalls.

Reviewers: atanasyan, slthakur

Differential Revision: https://reviews.llvm.org/D35548

This version fixes a logic error that generated warnings incorrectly and
gets rid of spurious arguments to the backend when -mgpopt is not used.

llvm-svn: 308619
2017-07-20 14:04:12 +00:00
Simon Dardis 4c5fd9cd7f Revert "Reland "[mips] Teach the driver to accept -m(no-)gpopt.""
This reverts r308458. Investigating further buildbot breakage.

llvm-svn: 308459
2017-07-19 13:34:08 +00:00
Simon Dardis badcc7e74b Reland "[mips] Teach the driver to accept -m(no-)gpopt."
This patch teaches the driver to pass -mgpopt by default to the backend when it
is supported, i.e. we are using -mno-abicalls.

Reviewers: atanasyan, slthakur

Differential Revision: https://reviews.llvm.org/D35548

This version fixes a logic error that generated warnings incorrectly.

llvm-svn: 308458
2017-07-19 13:12:37 +00:00
Simon Dardis a923f0e9ce Revert "[mips] Teach the driver to accept -m(no-)gpopt."
Revert r308431 and r308432, these caused broke some buildbots.

llvm-svn: 308436
2017-07-19 11:11:02 +00:00
Simon Dardis e435e41e01 [mips] Teach the driver to accept -m(no-)gpopt.
This patch teaches the driver to pass -mgpopt by default to the backend when it
is supported, i.e. we are using -mno-abicalls.

Reviewers: atanasyan, slthakur

Differential Revision: https://reviews.llvm.org/D35548

llvm-svn: 308431
2017-07-19 10:38:03 +00:00
Simon Dardis ba8eb9c50c [mips][mt][7/7] Add driver option for the MIPS MT ASE.
Reviewers: atanasyan, slthakur

Differential Revision: https://reviews.llvm.org/D35254

llvm-svn: 307847
2017-07-12 21:13:05 +00:00
Simon Atanasyan df406d18aa [driver][mips] Pass long-calls feature flag to the MIPS backend
Check the `-mlong-calls` command line option and pass the `long-calls`
feature flag to the backend. Handling of this feature flag in the backend
needs to be implemented by a separate commit.

llvm-svn: 307386
2017-07-07 10:35:33 +00:00
Simon Dardis d0e83bad13 [mips] Compact branch policy setting.
This patch adds the commandline option -mcompact-branches={never,optimal,always),
which controls how LLVM generates compact branches for MIPSR6 targets. By default,
the compact branch policy is 'optimal' where LLVM will generate the most
appropriate branch for any situation. The 'never' and 'always' policy will disable
or always generate compact branches wherever possible respectfully.

Reviewers: dsanders, vkalintiris, atanasyan

Differential Revision: http://reviews.llvm.org/D20729

llvm-svn: 271000
2016-05-27 15:13:31 +00:00
Toma Tabacu 94ea6867cc [mips] Don't propagate -mfpxx by default if soft/single float were also set.
Summary:
If the driver is only given -msoft-float/-mfloat-abi=soft or -msingle-float,
we should refrain from propagating -mfpxx, unless it was explicitly given on the
command line.

Reviewers: atanasyan, dsanders

Reviewed By: atanasyan, dsanders

Subscribers: cfe-commits, mpf

Differential Revision: http://reviews.llvm.org/D10387

llvm-svn: 239818
2015-06-16 13:54:13 +00:00
Petar Jovanovic 1dbc317736 [Mips] Generate warning for invalid '-mnan' and '-march' combinations
This patch generates a warning for invalid combination of '-mnan' and
'-march' options, it properly sets NaN encoding for a given '-march',
and it passes a proper NaN encoding to the assembler.

Patch by Vladimir Radosavljevic.

Differential Revision: http://reviews.llvm.org/D8170

llvm-svn: 234882
2015-04-14 12:49:08 +00:00
Daniel Sanders feb613028b [mips] Invert the abicalls feature bit to be noabicalls so that it's possible for -mno-abicalls to take effect.
Also added the testcase that should have been in r215194.

This behaviour has surprised me a few times now. The problem is that the
generated MipsSubtarget::ParseSubtargetFeatures() contains code like this:

   if ((Bits & Mips::FeatureABICalls) != 0) IsABICalls = true;

so '-abicalls' means 'leave it at the default' and '+abicalls' means 'set it to
true'. In this case, (and the similar -modd-spreg case) I'd like the code to be

  IsABICalls = (Bits & Mips::FeatureABICalls) != 0;

or possibly:

   if ((Bits & Mips::FeatureABICalls) != 0)
     IsABICalls = true;
   else
     IsABICalls = false;

and preferably arrange for 'Bits & Mips::FeatureABICalls' to be true by default
(on some triples).

llvm-svn: 215211
2014-08-08 15:47:17 +00:00
Daniel Sanders e805f44c8f [mips] Add -mabicalls/-mno-abicalls to the driver
Based on a patch by Matheus Almeida. I've added testcases and fixed a bug where
the options weren't passed on to GAS.

llvm-svn: 215204
2014-08-08 13:44:50 +00:00
Daniel Sanders 2e9427a175 [mips] Add support for -mfpxx and -mno-fpxx.
Differential Revision: http://reviews.llvm.org/D4464

llvm-svn: 213132
2014-07-16 09:57:54 +00:00
Daniel Sanders 28e5d39183 [mips] Add support for -modd-spreg/-mno-odd-spreg
Differential Revision: http://reviews.llvm.org/D4432

llvm-svn: 212700
2014-07-10 10:39:51 +00:00
Matheus Almeida 602bff3184 [mips] Pass nan2008 info to the back-end.
Summary: The initial support for NaN2008 was added to the back-end in r206396.

Reviewers: atanasyan

Reviewed By: atanasyan

Differential Revision: http://reviews.llvm.org/D3448

llvm-svn: 208220
2014-05-07 16:16:07 +00:00
Daniel Sanders 9469417064 [mips] Added -mfp64 and -mfp32 options.
These options specify 64-bit FP registers and 32-bit FP registers respectively.

When using -mfp32, the FPU has 16x double-precision registers overlapping with
the 32x single-precision registers (each double-precision register overlaps
two single-precision registers).

When using -mfp64, the FPU has 32x double-precision registers overlapping with
the 32x single-precision registers (each double-precision register overlaps
with one single-precision register and has an additional 32-bits).

MSA requires -mfp64.

llvm-svn: 192899
2013-10-17 14:55:58 +00:00
Jack Carter 44ff1e5673 [Mips] MSA frontend option support
This patch adds -mmsa and -mno-msa to the options supported by 
clang to enable and disable support for MSA.

When MSA is enabled, a predefined macro '__mips_msa' is defined to 1.

Patch by Daniel Sanders

llvm-svn: 188184
2013-08-12 17:20:29 +00:00
Akira Hatanaka 0aa60efe9c [mips] Add support for command-line options -mno-check-zero-division and
-mcheck-zero-division.

llvm-svn: 186710
2013-07-19 18:58:48 +00:00
Simon Atanasyan c580b3248c [Mips] Add -mldc1-sdc1 / -mno-ldc1-sdc1 command line options.
llvm-svn: 181660
2013-05-11 06:33:44 +00:00
Simon Atanasyan af9ebc742d [Mips] Remove "REQUIRES: mips-registered-target" from some MIPS-related
driver tests. These tests check the driver only and do not require mips
target.

llvm-svn: 180042
2013-04-22 20:26:27 +00:00
Simon Atanasyan 607776140b [Mips] Support -mmicromips / -mno-micromips command line options.
llvm-svn: 179489
2013-04-14 14:07:51 +00:00
Simon Atanasyan 2eaec51f66 [MIPS] Add -mxgot/-mno-xgot command line options
to enable/disable support of GOT larger than 64k.

llvm-svn: 169098
2012-12-01 18:27:21 +00:00
Simon Atanasyan ec4b1c194b MIPS: Use -G option to specify MIPS section threshold. Translate it
to the -mllvm -mips-ssection-threshold=<value> pair and pass to the frontend.
The patch suggested by Carl Norum.

llvm-svn: 162697
2012-08-27 20:55:56 +00:00
Jim Grosbach 2987c57924 Tests: check for target availability for target-specific tests.
Lots of tests are using an explicit target triple w/o first checking that the
target is actually available. Add a REQUIRES clause to a bunch of them. This should
hopefully unbreak bots which don't configure w/ all targets enabled.

llvm-svn: 159949
2012-07-09 18:34:21 +00:00
Simon Atanasyan 9c6f1f7f23 MIPS: Add -mdsp/-mno-dsp and -mdspr2/-mno-dspr2 command line options support.
llvm-svn: 159769
2012-07-05 19:23:00 +00:00
Simon Atanasyan 6f23fa0f18 MIPS: Add -mips16 / -mno-mips16 command line support.
llvm-svn: 159747
2012-07-05 14:19:39 +00:00