Commit Graph

55 Commits

Author SHA1 Message Date
Tony Tye f16a45ea15 Add documentation for various aspects of the AMDGPU backend.
Differential Revision: https://reviews.llvm.org/D33736

llvm-svn: 304831
2017-06-06 20:31:59 +00:00
Jonathan Roelofs ebba0507da [docs] Fix typo
llvm-svn: 294645
2017-02-09 23:02:37 +00:00
Konstantin Zhuravlyov ee68fdadfe [Support/ELF/AMDGPU] Add 32-bit lo/hi got and pc relative relocations
Added relocation names:
  - R_AMDGPU_GOTPCREL32_LO
  - R_AMDGPU_GOTPCREL32_HI
  - R_AMDGPU_REL32_LO
  - R_AMDGPU_REL32_HI

AMDGPU isa only supports 32-bit immediates. In order to access 64-bit address we need to generate 32-bit lo/hi relocations, and do the right math (separate patch). Currently we only generate one 32 bit relocation for lower bits for each access, losing higher bits. Hence we need relocations listed above.

Differential Revision: https://reviews.llvm.org/D25546

llvm-svn: 284191
2016-10-14 04:03:49 +00:00
Sylvestre Ledru 843b7515ae Fix some typos in the doc
llvm-svn: 279943
2016-08-28 20:29:18 +00:00
Renato Golin 124f2593fc [docs] Fixing Sphinx warnings to unclog the buildbot
Lots of blocks had "llvm" or "nasm" syntax types but either weren't following
the syntax, or the syntax has changed (and sphinx hasn't keep up) or the type
doesn't even exist (nasm?).

Other documents had :options: what were invalid. I only removed those that had
warnings, and left the ones that didn't, in order to follow the principle of
least surprise.

This is like this for ages, but the buildbot is now failing on errors. It may
take a while to upgrade the buildbot's sphinx, if that's even possible, but
that shouldn't stop us from getting docs updates (which seem down for quite
a while).

Also, we're not losing any syntax highlight, since when it doesn't parse, it
doesn't colour. Ie. those blocks are not being highlighted anyway.

I'm trying to get all docs in one go, so that it's easy to revert later if we
do fix, or at least easy to know what's to fix.

llvm-svn: 276109
2016-07-20 12:16:38 +00:00
Krzysztof Parzyszek 3da1078a9b [Docs][CodeGenerator] Don't specify the number of operands in BuildMI
Patch by Visoiu Mistrih Francis.

Differential Revision: http://reviews.llvm.org/D21819

llvm-svn: 274128
2016-06-29 14:14:59 +00:00
Tom Stellard 14416ae6cd Support/ELF: Add R_AMDGPU_GOTPCREL relocation
Summary:
We will start generating this in a future patch.

Reviewers: arsenm, kzhuravl, rafael, ruiu, tony-tye

Subscribers: arsenm, llvm-commits, kzhuravl

Differential Revision: http://reviews.llvm.org/D21482

llvm-svn: 273628
2016-06-23 23:11:29 +00:00
Konstantin Zhuravlyov 4ecab84364 [docs] Update AMDGPU relocation information
- Added new notation for specifying relocation calculation
  - Renamed:
    - R_AMDGPU_32_LOW -> R_AMDGPU_ABS32_LO
    - R_AMDGPU_32_HIGH -> R_AMDGPU_ABS32_HI
    - R_AMDGPU_64 -> R_AMDGPU_ABS64
  - Added:
    - R_AMDGPU_REL32
    - R_AMDGPU_REL64
    - R_AMDGPU_ABS32
  - Updated calculations for relative relocations

Differential Revision: http://reviews.llvm.org/D21215

llvm-svn: 272684
2016-06-14 17:20:29 +00:00
Tom Stellard 9fdfa518eb docs: Add AMDGPU relocation information
Summary:
This documents the various relocation types that are supported by the
Radeon Open Compute (ROC) runtime (which is essentially the dynamic
linker for AMDGPU).

Only R_AMDGPU_32 is not currently supported by the ROC runtime, but
it will usually be resolved at link time by lld.

Patch by: Konstantin Zhuravlyov

Reviewers: kzhuravl, rafael

Subscribers: rafael, arsenm, llvm-commits, kzhuravl

Differential Revision: http://reviews.llvm.org/D20952

llvm-svn: 272352
2016-06-10 00:31:13 +00:00
James Y Knight 0c145c0c3a Remove bit-rotten CppBackend.
This backend was supposed to generate C++ code which will re-construct
the LLVM IR passed as input. This seems to me to have very marginal
usefulness in the first place.

However, the code has never been updated to use IRBuilder, which makes
its current value negative -- people who look at the output may be
steered to use the *wrong* C++ APIs to construct IR.

Furthermore, it's generated code that doesn't compile since at least
2013.

Differential Revision: http://reviews.llvm.org/D19942

llvm-svn: 268631
2016-05-05 14:35:40 +00:00
David L Kreitzer c9fbf1018a Add an address space for the X86 SS segment.
Patch by Michael LeMay (michael.lemay@intel.com)

Differential Revision: http://reviews.llvm.org/D17093

llvm-svn: 268431
2016-05-03 20:16:08 +00:00
Justin Lebar ca35b090f8 [docs] "Straightforward" is one word.
llvm-svn: 263480
2016-03-14 20:18:51 +00:00
Justin Lebar 20adbdd2c0 [docs] Fix typo in docs/CodeGenerator.rst.
llvm-svn: 263479
2016-03-14 20:17:08 +00:00
Artyom Skrobov 48aee7c65b Fixing a typo in docs/CodeGenerator.rst
llvm-svn: 253045
2015-11-13 15:14:04 +00:00
Alexei Starovoitov cb6b408da4 [bpf] add documentation and instruction set description
llvm-svn: 245105
2015-08-14 22:00:45 +00:00
Charlie Turner 5b41ea0d56 [NFC] Minor editorial fixes to the CodeGen docs.
llvm-svn: 241249
2015-07-02 09:32:01 +00:00
Eric Christopher 1e61ffddc7 Fix grammar in documentation.
Patch by Ralph Campbell!

llvm-svn: 229884
2015-02-19 18:46:25 +00:00
Mehdi Amini d8976b8ed3 SelectionDAG: add a -filter-view-dags option to llc
This option takes the name of the basic block you want to visualize
with -view-*-dags

Differential Revision: http://reviews.llvm.org/D6948

llvm-svn: 225953
2015-01-14 06:03:18 +00:00
Dan Liew 4773d0b4bf [sphinx cleanup]
Fix sphinx warning introduced by r217537

llvm-svn: 217541
2014-09-10 20:43:03 +00:00
Nico Weber 4b916b21b4 Fix docs reference to inexistent class.
Patch sent via telegraph by TNorthover. Thanks!

llvm-svn: 217537
2014-09-10 19:50:55 +00:00
Matt Arsenault 907e64b436 Add note to documentation about machine node chains.
I've been assuming chain operands were always the first operand,
since the documentation says this. I was confused about why they
were missing after instruction selection. Apparently the convention
changes to using the last operand for MachineSDNodes and I've never
noticed before.

llvm-svn: 216934
2014-09-02 19:18:52 +00:00
Sean Silva 9ab8899f5c [docs] Fix a mangled sentence.
Fixes PR20169

llvm-svn: 212116
2014-07-01 18:22:32 +00:00
Sean Silva ff6a7d6d32 [docs] Remove stray HTML tag.
Fixes PR20167

llvm-svn: 212115
2014-07-01 18:15:00 +00:00
Alp Toker cf21875d41 Fix 'platform-specific' hyphenations
llvm-svn: 212056
2014-06-30 18:57:16 +00:00
Jay Foad 5ace2cd512 Fix strange typo in markup.
llvm-svn: 208759
2014-05-14 08:10:16 +00:00
Reid Kleckner c487d73f41 Revert "[ms-cxxabi] Add a new calling convention that swaps 'this' and 'sret'"
This reverts commit r200561.

This calling convention was an attempt to match the MSVC C++ ABI for
methods that return structures by value.  This solution didn't scale,
because it would have required splitting every CC available on Windows
into two: one for methods and one for free functions.

Now that we can put sret on the second arg (r208453), and Clang does
that (r208458), revert this hack.

llvm-svn: 208459
2014-05-09 22:56:42 +00:00
Sean Silva 1703e705cf [docs] Fix up some links to the preferred style.
:doc:`...` and :ref:`...` links help Sphinx keep track the dependencies
between documents and ensure that they are not pointing to nowhere.

Raw HTML links work just fine and are easier for people less familiar
with reST/Sphinx. They are easy to change over to the :doc:/:ref: style
after the fact so this is not a problem.

This commit doesn't fix all of them.

llvm-svn: 205792
2014-04-08 21:06:22 +00:00
Sean Silva 397ee6ec98 [docs] Fix some links
The TableGen docs have changed structure

Patch by Tay Ray Chuan!

llvm-svn: 205744
2014-04-07 22:46:40 +00:00
Reid Kleckner 1c843228f8 [ms-cxxabi] Add a new calling convention that swaps 'this' and 'sret'
MSVC always places the 'this' parameter for a method first.  The
implicit 'sret' pointer for methods always comes second.  We already
implement this for __thiscall by putting sret parameters on the stack,
but __cdecl methods require putting both parameters on the stack in
opposite order.

Using a special calling convention allows frontends to keep the sret
parameter first, which avoids breaking lots of assumptions in LLVM and
Clang.

Fixes PR15768 with the corresponding change in Clang.

Reviewers: ributzka, majnemer

Differential Revision: http://llvm-reviews.chandlerc.com/D2663

llvm-svn: 200561
2014-01-31 17:41:22 +00:00
Tim Northover cdc5395680 Docs: fix sign of division and increase equivocation on code generated.
I should have been a politician.

llvm-svn: 199092
2014-01-13 10:47:04 +00:00
Rafael Espindola b665d79f14 Add more documentation about the TargetStreamer interface.
llvm-svn: 192796
2013-10-16 14:54:39 +00:00
Rafael Espindola 974efd3208 Add a paragraph about MCTargetStreamer.
llvm-svn: 192265
2013-10-09 02:05:08 +00:00
Sylvestre Ledru a9853efb78 Fix a typo in the documentation. Thanks to Diana Vasile for the patch
llvm-svn: 191752
2013-10-01 13:17:09 +00:00
Rafael Espindola 729866670b Remove the mblaze backend from llvm.
Approval in here http://lists.cs.uiuc.edu/pipermail/llvmdev/2013-July/064169.html

llvm-svn: 187145
2013-07-25 18:55:05 +00:00
Richard Sandiford eb9af29426 [SystemZ] Add disassembler support
llvm-svn: 181777
2013-05-14 10:17:52 +00:00
Richard Sandiford ef494aa857 Add SystemZ feats to CodeGenerator.rst
llvm-svn: 181431
2013-05-08 14:23:43 +00:00
Richard Osborne ba03fbabe5 [docs] Update Target Feature Matrix for the XCore backend.
Disassembler support has recently been added. Fill in some other unknowns
at the same time.

llvm-svn: 181156
2013-05-05 14:09:55 +00:00
Ulrich Weigand e618abd6e0 Extend TableGen instruction selection matcher to improve handling
of complex instruction operands (e.g. address modes).

Currently, if a Pat pattern creates an instruction that has a complex
operand (i.e. one that consists of multiple sub-operands at the MI
level), this operand must match a ComplexPattern DAG pattern with the
correct number of output operands.

This commit extends TableGen to alternatively allow match a complex
operands against multiple separate operands at the DAG level.

This allows using Pat patterns to match pre-increment nodes like
pre_store (which must have separate operands at the DAG level) onto
an instruction pattern that uses a multi-operand memory operand,
like the following example on PowerPC (will be committed as a
follow-on patch):

  def STWU  : DForm_1<37, (outs ptr_rc:$ea_res), (ins GPRC:$rS, memri:$dst),
                    "stwu $rS, $dst", LdStStoreUpd, []>,
                    RegConstraint<"$dst.reg = $ea_res">, NoEncode<"$ea_res">;

  def : Pat<(pre_store GPRC:$rS, ptr_rc:$ptrreg, iaddroff:$ptroff),
            (STWU GPRC:$rS, iaddroff:$ptroff, ptr_rc:$ptrreg)>;

Here, the pair of "ptroff" and "ptrreg" operands is matched onto the
complex operand "dst" of class "memri" in the "STWU" instruction.

Approved by Jakob Stoklund Olesen.

llvm-svn: 177428
2013-03-19 19:51:09 +00:00
Eli Bendersky 0b85ba7d9e Remove a mention of TargetInstrDescriptor, which no longer exists in the code
llvm-svn: 173971
2013-01-30 20:54:21 +00:00
Justin Holewinski f73d7a53ed Remove PTX->NVPTX in CodeGenerator document and update its text.
llvm-svn: 172235
2013-01-11 18:47:10 +00:00
Justin Holewinski ceab0dea55 Update CodeGenerator document to add a "Not Applicable" category to the
Target Feature Matrix, and update the PTX column with this new category.

llvm-svn: 172234
2013-01-11 18:37:54 +00:00
Sean Silva 92a44897a2 docs: Fix long standing linking antipattern.
Before we learned about :doc:, we used :ref: and put a dummy link at the
top of each page. Don't do that anymore.

This fixes PR14891 as a special case.

llvm-svn: 172162
2013-01-11 02:28:08 +00:00
Dmitri Gribenko 38782b8e87 Documentation: convert ReleaseNotes.html to reST.
Patch by Anthony Mykhailenko with small fixes by me.

llvm-svn: 169714
2012-12-09 23:14:26 +00:00
Dmitri Gribenko 7174c5a074 Documentation: convert WritingAnLLVMBackend.html to reST
llvm-svn: 169087
2012-12-01 12:13:48 +00:00
Dmitri Gribenko 8bd389d8d7 Documentation: formatting improvements
llvm-svn: 168897
2012-11-29 16:12:13 +00:00
Sean Silva 33f2c07c95 docs: Fix reference to "bold" part of code example.
Fixes PR14380.

The prose was referring to a "bold" part of the code example, where the
boldness was lost in the transition from HTML. Unlike HTML, where one
can easily have a <b> inside a <pre>, reStructuredText is generally
unable to represent such nested markup.

Hack around it with the :emphasise-lines: option to the  code-block
directive to single out the regions instead. Thankfully the regions are
close-enough to being full lines for this to work.

llvm-svn: 168329
2012-11-19 21:18:50 +00:00
Duncan Sands d71b4e4568 Add the Erlang/HiPE calling convention, patch by Yiannis Tsiouris.
llvm-svn: 168166
2012-11-16 12:36:39 +00:00
Eric Christopher 950d8703b1 Remove the CellSPU port.
Approved by Chris Lattner.

llvm-svn: 167984
2012-11-14 22:09:20 +00:00
Eli Bendersky 6f6f55ee61 PR14256: SelectionDAGLowering was renamed to SelectionDAGBuilder a long time ago. Fix references to it in documentation and comments.
llvm-svn: 167378
2012-11-05 02:59:23 +00:00
Dmitri Gribenko 13539d1b0a Documentation: fix typos.
llvm-svn: 167302
2012-11-02 18:06:51 +00:00