Commit Graph

20 Commits

Author SHA1 Message Date
Wouter van Oortmerssen
820c6263d9 [WebAssembly] Fixed disassembler not knowing about new brlist operand
Summary:
The previously introduced new operand type for br_table didn't have
a disassembler implementation, causing an assert.

Reviewers: dschuff, aheejin

Subscribers: sbc100, jgravelle-google, sunfish, llvm-commits

Differential Revision: https://reviews.llvm.org/D56227

llvm-svn: 350366
2019-01-03 23:01:30 +00:00
Wouter van Oortmerssen
ad72f68501 [WebAssembly] made assembler parse block_type
Summary:
This was previously ignored and an incorrect value generated.

Also fixed Disassembler's handling of block_type.

Reviewers: dschuff, aheejin

Subscribers: sbc100, jgravelle-google, sunfish, llvm-commits

Differential Revision: https://reviews.llvm.org/D56092

llvm-svn: 350270
2019-01-02 23:23:51 +00:00
Thomas Lively
fc3163b67a [WebAssembly] Fix return type of nextByte
Summary:
The old return type did not allow for correct error reporting and was
causing a compiler warning.

Reviewers: aheejin

Subscribers: dschuff, sbc100, jgravelle-google, sunfish, llvm-commits

Differential Revision: https://reviews.llvm.org/D54586

llvm-svn: 346979
2018-11-15 18:56:49 +00:00
Fangrui Song
4955066366 [WebAssembly] Hotfix of WebAssemblyInstructionTableSize after rL346465
llvm-svn: 346535
2018-11-09 18:32:20 +00:00
Thomas Lively
2faf079494 [WebAssembly] Read prefixed opcodes as ULEB128s
Summary: Depends on D54126.

Reviewers: aheejin, dschuff, aardappel

Subscribers: sbc100, jgravelle-google, sunfish, llvm-commits

Differential Revision: https://reviews.llvm.org/D54138

llvm-svn: 346465
2018-11-09 01:57:00 +00:00
Benjamin Kramer
27c769d28a [Target] Untangle disassemblers
Disassemblers cannot depend on main target headers. The same is true for
MCTargetDesc, but there's a lot more cleanup needed for that.

llvm-svn: 341822
2018-09-10 12:53:46 +00:00
Wouter van Oortmerssen
a733d08db2 [WebAssembly] Made disassembler only use stack instructions.
Summary:
Now uses the StackBased bit from the tablegen defs to identify
stack instructions (and ignore register based or non-wasm instructions).

Also changed how we store operands, since we now have up to 16 of them
per instruction. To not cause static data bloat, these are compressed
into a tiny table.

+ a few other cleanups.

Tested:
- MCTest
- llvm-lit -v `find test -name WebAssembly`

Reviewers: dschuff, jgravelle-google, sunfish, tlively

Subscribers: sbc100, aheejin, llvm-commits

Differential Revision: https://reviews.llvm.org/D51320

llvm-svn: 341081
2018-08-30 15:40:53 +00:00
Thomas Lively
22442924a8 [WebAssembly] v128.const
Summary:
This CL implements v128.const for each vector type. New operand types
are added to ensure the vector contents can be serialized without LEB
encoding. Tests are added for instruction selection, encoding,
assembly and disassembly.

Reviewers: aheejin, dschuff, aardappel

Subscribers: sbc100, jgravelle-google, sunfish, llvm-commits

Differential Revision: https://reviews.llvm.org/D50873

llvm-svn: 340336
2018-08-21 21:03:18 +00:00
Sam Clegg
16c16827bc [WebAssembly] Initial Disassembler.
This implements a new table-gen emitter to create tables for
a wasm disassembler, and a dissassembler to use them.

Comes with 2 tests, that tests a few instructions manually. Is also able to
disassemble large .wasm files with objdump reasonably.

Not working so well, to be addressed in followups:
- objdump appears to be passing an incorrect starting point.
- since the disassembler works an instruction at a time, and it is
  disassembling stack instruction, it has no idea of pseudo register assignments.
  These registers are required for the instruction printing code that follows.
  For now, all such registers appear in the output as $0.

Patch by Wouter van Oortmerssen

Differential Revision: https://reviews.llvm.org/D45848

llvm-svn: 332052
2018-05-10 22:16:44 +00:00
Adrian Prantl
5f8f34e459 Remove \brief commands from doxygen comments.
We've been running doxygen with the autobrief option for a couple of
years now. This makes the \brief markers into our comments
redundant. Since they are a visual distraction and we don't want to
encourage more \brief markers in new code either, this patch removes
them all.

Patch produced by

  for i in $(git grep -l '\\brief'); do perl -pi -e 's/\\brief //g' $i & done

Differential Revision: https://reviews.llvm.org/D46290

llvm-svn: 331272
2018-05-01 15:54:18 +00:00
Chandler Carruth
6bda14b313 Sort the remaining #include lines in include/... and lib/....
I did this a long time ago with a janky python script, but now
clang-format has built-in support for this. I fed clang-format every
line with a #include and let it re-sort things according to the precise
LLVM rules for include ordering baked into clang-format these days.

I've reverted a number of files where the results of sorting includes
isn't healthy. Either places where we have legacy code relying on
particular include ordering (where possible, I'll fix these separately)
or where we have particular formatting around #include lines that
I didn't want to disturb in this patch.

This patch is *entirely* mechanical. If you get merge conflicts or
anything, just ignore the changes in this patch and run clang-format
over your #include lines in the files.

Sorry for any noise here, but it is important to keep these things
stable. I was seeing an increasing number of patches with irrelevant
re-ordering of #include lines because clang-format was used. This patch
at least isolates that churn, makes it easy to skip when resolving
conflicts, and gets us to a clean baseline (again).

llvm-svn: 304787
2017-06-06 11:49:48 +00:00
Dan Gohman
dfe6ce7abd [WebAssembly] Remove old experimental disassemler code.
Remove support for disassembling an old experimental wasm binary format, which
is no longer in use anywhere.

llvm-svn: 294809
2017-02-11 00:02:23 +00:00
Dan Gohman
b89f2d3d92 [WebAssembly] Add instruction definitions for drop and get/set_global.
llvm-svn: 293922
2017-02-02 19:29:44 +00:00
Dan Gohman
4fc4e42dea [WebAssembly] Add an option to make get_local/set_local explicit.
This patch adds a pass, controlled by an option and off by default for
now, for making implicit get_local/set_local explicit. This simplifies
emitting wasm with MC.

Differential Revision: https://reviews.llvm.org/D25836

llvm-svn: 285009
2016-10-24 19:49:43 +00:00
Mehdi Amini
f42454b94b Move the global variables representing each Target behind accessor function
This avoids "static initialization order fiasco"

Differential Revision: https://reviews.llvm.org/D25412

llvm-svn: 283702
2016-10-09 23:00:34 +00:00
Dan Gohman
4b8e8becf6 [WebAssembly] Rename OPERAND_FP32IMM to OPERAND_F32IMM.
WebAssembly documentation consistently says "f32" rather than "fp32" to
describe 32-bit floating-point.

llvm-svn: 283146
2016-10-03 21:31:31 +00:00
Dan Gohman
aa7429112e [WebAssembly] Implement support for custom NaN bit patterns.
llvm-svn: 260968
2016-02-16 15:14:23 +00:00
Benjamin Kramer
c50b89070c Update wasm target for r258819.
llvm-svn: 258827
2016-01-26 18:21:38 +00:00
Dan Gohman
bb3722430f [WebAssembly] Implement unaligned loads and stores.
Differential Revision: http://reviews.llvm.org/D16534

llvm-svn: 258779
2016-01-26 03:39:31 +00:00
Dan Gohman
1a42728719 [WebAssembly] Implement a prototype instruction encoder and disassembler.
This is using an extremely simple temporary made-up binary format, not the
official binary format (which isn't defined yet).

llvm-svn: 257440
2016-01-12 03:32:29 +00:00