Reviewers: dsanders

Reviewed By: dsanders

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D10497

llvm-svn: 239899

Summary:
Previously, MCSymbolRefExpr::create() was called with a StringRef of the symbol
name, which it would then search for in the Symbols StringMap (from MCContext).

However, relative labels (which are temporary symbols) are apparently not stored
in the Symbols StringMap, so we end up creating a new {$,.L}tmp symbol
({$,.L}tmp00, {$,.L}tmp10 etc.) each time we create an MCSymbolRefExpr by
passing in the symbol name as a StringRef.

Fortunately, there is a version of MCSymbolRefExpr::create() which takes an
MCSymbol* and we already have an MCSymbol* at that point, so we can just pass
that in instead of the StringRef.

I also removed the local StringRef calls to MCSymbolRefExpr::create() from
expandMemInst(), as those cases can be handled by evaluateRelocExpr() anyway.

Reviewers: dsanders

Reviewed By: dsanders

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D9938

llvm-svn: 239897

The mftb instruction was incorrectly marked as deprecated in the PPC
Backend. Instead, it should not be treated as deprecated, but rather be
implemented using the mfspr instruction. A similar patch was put into GCC last
year. Details can be found at:

https://sourceware.org/ml/binutils/2014-11/msg00383.html.
This change will replace instances of the mftb instruction with the mfspr
instruction for all CPUs except 601 and pwr3. This will also be the default
behaviour.

Additional details can be found in:

https://llvm.org/bugs/show_bug.cgi?id=23680

Phabricator review: http://reviews.llvm.org/D10419

llvm-svn: 239827

Summary:
Relocs that can be converted from absolute to PC-relative now do so if IsPCRel
is true. Relocs that require PC-relative now call llvm_unreachable() if IsPCRel
is false and similarly those that require absolute assert that IsPCRel is false.

Note that while it looks like some relocs (e.g. R_MIPS_26) can be converted into
the MIPS32r6/MIPS64r6 relocs (R_MIPS_PC*_S2), it isn't actually valid to do so.

Placeholders have been left in the testcase for unsupported relocs and relocs
that cannot be generated at the moment.

Reviewers: vkalintiris

Reviewed By: vkalintiris

Subscribers: llvm-commits, rafael

Differential Revision: http://reviews.llvm.org/D10184

llvm-svn: 239817

Summary:
GetTarget() may modify TripleName without also updating TheTriple.
This can lead to situations where the MCObjectStreamer has a different triple
to the rest of LLVM.

This inconsistency caused sparc-little-endian.s to pass on Windows because most
of LLVM had sparcel-pc-win32 while MCObjectStreamer had "". I believe the same
kind of thing was also true of Darwin.

Reviewers: rengolin

Reviewed By: rengolin

Subscribers: llvm-commits, rengolin, rafael

Differential Revision: http://reviews.llvm.org/D10450

llvm-svn: 239808

Differential Revision: http://reviews.llvm.org/D10385
Patch by marina.yatsina@intel.com

llvm-svn: 239695

Added intrinsics for cvtsi2ss/d instructions.
Added tests for intrinsics and encoding.

Differential Revision: http://reviews.llvm.org/D10430

llvm-svn: 239694

llvm-svn: 239657

- Add glc, slc, and tfe operands to flat instructions
- Add missing flat instructions
- Fix the encoding of flat_load_dwordx3 and flat_store_dwordx3.

llvm-svn: 239637

Apparently, Arcanist didn't include some of my local changes in my previous
commit attempt.

llvm-svn: 239523

http://reviews.llvm.org/D10091

llvm-svn: 239522

http://reviews.llvm.org/D10312

llvm-svn: 239520

llvm-svn: 239519

This patch corresponds to review:
http://reviews.llvm.org/D10096

This is the back end portion of the patch related to D10095.
The patch adds the instructions and back end intrinsics for:
vbpermq
vgbbd

llvm-svn: 239505

[Hexagon] Adding decoders for signed operands and ensuring all signed operand types disassemble correctly.

llvm-svn: 239477

Specified the llvm namespace for the 2 calls to make_unique() which caused
compilation errors in Visual Studio 2013.

llvm-svn: 239405

Added encoding tests.

llvm-svn: 239403

It was breaking buildbots.

llvm-svn: 239397

Summary:
For some branches, GAS accepts an immediate instead of the 2nd register operand.
We only implement this for BNE and BEQ for now. Other branch instructions can be added later, if needed.

Reviewers: dsanders

Reviewed By: dsanders

Subscribers: seanbruno, emaste, llvm-commits

Differential Revision: http://reviews.llvm.org/D9666

llvm-svn: 239396

Differential Revision: http://reviews.llvm.org/D10320

llvm-svn: 239353

It was calling ChangeSection with the wrong current section, eventually leading
to a crash.

llvm-svn: 239335

This patch adds support for system register MMFR4_EL1 (memory model feature register) in the assembler.
This register provides information about the implemented memory model and memory management support.

llvm-svn: 239302

Implemented DAG lowering for all these forms.
Added tests for DAG lowering and encoding.

Differential Revision: http://reviews.llvm.org/D10310

llvm-svn: 239300

[objdump] Moving PrintImmHex out of MachODump and in to llvm-objdump and setting instprinter appropriately.

llvm-svn: 239265

Teaching llvm-mc how to understand the defsym command line option.  This allows integer-constant symbols to be defined on the command line and used during assembly.

llvm-svn: 239240

[MC] Common symbols weren't being checked for redeclaration which allowed an assembly file to generate an assertion in setCommon(): !isCommon().  This change allows redeclaration as long as the size and alignment match exactly, otherwise report a fatal error.

llvm-svn: 239227

Fixes pr23771.

llvm-svn: 239214

llvm-svn: 239161

These are added mainly for the benefit of clang, but this also means that they
are now allowed in .fpu directives and we emit the correct .fpu directive when
single-precision-only is used.

Differential Revision: http://reviews.llvm.org/D10238

llvm-svn: 239151

This is breaking the Windows buildbots.

llvm-svn: 239145

Summary:
Only restoring AvailableFeatures is not enough and will lead to buggy behaviour.
For example, if we have a feature enabled and we ".set pop", the next time we try
to ".set" that feature nothing will happen because the "!(STI.getFeatureBits()[Feature])"
check will be false, because we didn't restore STI.FeatureBits.

In order to fix this, we need to make MipsAssemblerOptions remember the STI.FeatureBits
instead of the AvailableFeatures and then regenerate AvailableFeatures each time we ".set pop".
This is because, AFAIK, there is no way to convert from AvailableFeatures back to STI.FeatureBits,
but the reverse is possible by using ComputeAvailableFeatures(STI.FeatureBits).

I also moved the updating of AssemblerOptions inside the "if" statement in
setFeatureBits() and clearFeatureBits(), as there is no reason to update if
nothing changes.

Reviewers: dsanders, mkuper

Reviewed By: dsanders

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D9156

llvm-svn: 239144

Fix the FIXME and remove this old as(1) compat option. It was useful for
bringup of the integrated assembler to diff object files, but now it's
just causing more relocations than strictly necessary to be generated.

rdar://21201804

llvm-svn: 239084

Section symbols exist as an optimization: instead of having multiple relocations
point to different symbols, many of them can point to a single section symbol.

When that optimization is unused, a section symbol is also unused and adds no
extra information to the object file.

This saves a bit of space on the object files and makes the output of
llvm-objdump -t easier to read and consequently some tests get quite a bit
simpler.

llvm-svn: 239045

llvm-svn: 239042

llvm-svn: 239041

llvm-svn: 239019

Added all forms of VPERMPS/PD instrcuctions.
Added encoding tests.

llvm-svn: 239016

llvm-svn: 239011

AVX-512: Implemented GETEXP instruction for KNL and SKX
Added rounding mode modifier for SQRTPS/PD
Added tests for encoding and intrinsics.
CR:
http://reviews.llvm.org/D9991

llvm-svn: 238923

Added tests for encoding.

By Igor Breger (igor.breger@intel.com)

llvm-svn: 238917