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.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@307386 91177308-0d34-0410-b5e6-96231b3b80d8

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


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@271000 91177308-0d34-0410-b5e6-96231b3b80d8

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

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@239818 91177308-0d34-0410-b5e6-96231b3b80d8

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


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@234882 91177308-0d34-0410-b5e6-96231b3b80d8

[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).



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@215211 91177308-0d34-0410-b5e6-96231b3b80d8

Based on a patch by Matheus Almeida. I've added testcases and fixed a bug where
the options weren't passed on to GAS.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@215204 91177308-0d34-0410-b5e6-96231b3b80d8

Differential Revision: http://reviews.llvm.org/D4464


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@213132 91177308-0d34-0410-b5e6-96231b3b80d8

Differential Revision: http://reviews.llvm.org/D4432


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@212700 91177308-0d34-0410-b5e6-96231b3b80d8

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

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@208220 91177308-0d34-0410-b5e6-96231b3b80d8

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.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@192899 91177308-0d34-0410-b5e6-96231b3b80d8

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


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@188184 91177308-0d34-0410-b5e6-96231b3b80d8

-mcheck-zero-division.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@186710 91177308-0d34-0410-b5e6-96231b3b80d8

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@181660 91177308-0d34-0410-b5e6-96231b3b80d8

driver tests. These tests check the driver only and do not require mips
target.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@180042 91177308-0d34-0410-b5e6-96231b3b80d8

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179489 91177308-0d34-0410-b5e6-96231b3b80d8

to enable/disable support of GOT larger than 64k.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@169098 91177308-0d34-0410-b5e6-96231b3b80d8

to the -mllvm -mips-ssection-threshold=<value> pair and pass to the frontend.
The patch suggested by Carl Norum.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162697 91177308-0d34-0410-b5e6-96231b3b80d8

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.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@159949 91177308-0d34-0410-b5e6-96231b3b80d8

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@159769 91177308-0d34-0410-b5e6-96231b3b80d8

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@159747 91177308-0d34-0410-b5e6-96231b3b80d8