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53 Commits

Author SHA1 Message Date
Craig Topper
023b407c11 [X86] Add a new VEX_WPrefix encoding to tag EVEX instruction that have VEX.W==1, but can be converted to their VEX equivalent that uses VEX.W==0. 
EVEX makes heavy use of the VEX.W bit to indicate 64-bit element vs 32-bit elements. Many of the VEX instructions were split into 2 versions with different masking granularity.

The EVEX->VEX table generate can collapse the two versions if the VEX version uses is tagged as VEX_WIG. But if the VEX version is instead marked VEX.W==0 we can't combine them because we don't know if there is also a VEX version with VEX.W==1.

This patch adds a new VEX_W1X tag that indicates the EVEX instruction encodes with VEX.W==1, but is safe to convert to a VEX instruction with VEX.W==0.

This allows us to remove a bunch of manual EVEX->VEX table entries. We may want to look into splitting up the VEX_WPrefix field which would simplify the disassembler.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@335017 91177308-0d34-0410-b5e6-96231b3b80d8
 2018-06-19 04:24:42 +00:00
Adrian Prantl
26b584c691 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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331272 91177308-0d34-0410-b5e6-96231b3b80d8
 2018-05-01 15:54:18 +00:00
Craig Topper
16fa9066ba [X86] Reduce number of OpPrefix bits in TSFlags to 2. NFCI 
TSFlag doesn't need to disambiguate NoPrfx from PS. So shift the encodings so PS is NoPrfx|0x4.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@329049 91177308-0d34-0410-b5e6-96231b3b80d8
 2018-04-03 06:37:04 +00:00
Craig Topper
f0c0da8ab2 [X86] Merge the Has3DNow0F0FOpcode TSFlag into the OpMap encoding. NFC 
The 3DNow instructions are encoded a little weird, but we can still represent it as an opcode map.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@328410 91177308-0d34-0410-b5e6-96231b3b80d8
 2018-03-24 06:04:12 +00:00
Rafael Auler
048f392b85 [X86][3DNOW] Teach decoder about AMD 3DNow! instrs 
Summary:
This patch makes the decoder understand old AMD 3DNow!
instructions that have never been properly supported in the X86
disassembler, despite being supported in other subsystems. Hopefully
this should make the X86 decoder more complete with respect to binaries
containing legacy code.

Reviewers: craig.topper

Reviewed By: craig.topper

Subscribers: llvm-commits, maksfb, bruno

Differential Revision: https://reviews.llvm.org/D43311

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@325295 91177308-0d34-0410-b5e6-96231b3b80d8
 2018-02-15 21:20:31 +00:00
Craig Topper
0f7dce5b5c [X86] Fix disassembly of EVEX rounding control and SAE instructions. 
Fixes PR31955.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@316308 91177308-0d34-0410-b5e6-96231b3b80d8
 2017-10-23 02:26:24 +00:00
Hiroshi Inoue
b08063c374 fix trivial typos in comments; NFC 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@307075 91177308-0d34-0410-b5e6-96231b3b80d8
 2017-07-04 13:09:29 +00:00
Ayman Musa
059f03aebf [X86] Moving X86Local namespace from .cpp to .h file to use it in memory folding TableGen backend. 
Differential Revision: https://reviews.llvm.org/D32797



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@302791 91177308-0d34-0410-b5e6-96231b3b80d8
 2017-05-11 11:51:12 +00:00
Ayman Musa
5cb227868c [X86][AVX] Extend hasVEX_WPrefix bit to accept WIG value (W Ignore) + update all AVX instructions with the new value. 
Add WIG value to all of AVX instructions which ignore the W-bit in their encoding, instead of giving them the default value of 0.
This patch is needed for a follow up work on EVEX2VEX pass (replacing EVEX encoded instructions with their corresponding VEX version when possible).

Differential Revision: https://reviews.llvm.org/D29876



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295643 91177308-0d34-0410-b5e6-96231b3b80d8
 2017-02-20 08:27:54 +00:00
Craig Topper
08f89d57a0 [X86] Create a new instruction format to handle 4VOp3 encoding. This saves one bit in TSFlags and simplifies MRMSrcMem/MRMSrcReg format handling. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@279424 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-08-22 07:38:50 +00:00
Craig Topper
91e5e5818d [X86] Create a new instruction format to handle MemOp4 encoding. This saves one bit in TSFlags and simplifies MRMSrcMem/MRMSrcReg format handling. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@279423 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-08-22 07:38:45 +00:00
Mehdi Amini
f6071e14c5 [NFC] Header cleanup 
Removed some unused headers, replaced some headers with forward class declarations.

Found using simple scripts like this one:
clear && ack --cpp -l '#include "llvm/ADT/IndexedMap.h"' | xargs grep -L 'IndexedMap[<]' | xargs grep -n --color=auto 'IndexedMap'

Patch by Eugene Kosov <claprix@yandex.ru>

Differential Revision: http://reviews.llvm.org/D19219

From: Mehdi Amini <mehdi.amini@apple.com>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@266595 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-04-18 09:17:29 +00:00
Craig Topper
69dced0d4c [TableGen] Stop passing by reference an integer that doesn't get modified. NFC 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@260934 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-02-16 04:24:56 +00:00
Craig Topper
6ff0feee63 [TableGen] Remove unused member variable. NFC 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@260933 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-02-16 04:24:54 +00:00
Craig Topper
3bc4397f1f [X86] Remove the single AdSize indicator and replace it with separate AdSize16/32/64 flags. 
This removes a hardcoded list of instructions in the CodeEmitter. Eventually I intend to remove the predicates on the affected instructions since in any given mode two of them are valid if we supported addr32/addr16 prefixes in the assembler.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224809 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-24 06:05:22 +00:00
Benjamin Kramer
00e08fcaa0 Canonicalize header guards into a common format. 
Add header guards to files that were missing guards. Remove #endif comments
as they don't seem common in LLVM (we can easily add them back if we decide
they're useful)

Changes made by clang-tidy with minor tweaks.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@215558 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-08-13 16:26:38 +00:00
Adam Nemet
6ae2941874 [X86] AVX512: Add disassembler support for compressed displacement 
There are two parts here.  First is to modify tablegen to adjust the encoding
type ENCODING_RM with the scaling factor.

The second is to use the new encoding types to compute the correct
displacement in the decoder.

Fixes <rdar://problem/17608489>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213281 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-07-17 17:04:56 +00:00
Craig Topper
46aa7fb720 [x86] Switch PAUSE instruction to use XS prefix instead of HasREPPrefix. Remove HasREPPrefix support from disassembler table generator since its now only used by CodeGenOnly instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201767 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-02-20 07:59:43 +00:00
Craig Topper
611c2c3804 Remove unused method declaration. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201301 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-02-13 07:12:40 +00:00
Craig Topper
1ee7e39dd4 Remove filtering concept from X86 disassembler table generation. It's no longer necessary. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201299 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-02-13 07:07:16 +00:00
Craig Topper
cfd14e6aea Remove special case filtering for instructions with lock prefix as they are all marked with isCodeGenOnly already. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201216 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-02-12 08:09:20 +00:00
NAKAMURA Takumi
3328a1dadc TableGen/X86RecognizableInstr.h: Prune out-of-date "@param isSSE". [-Wdocumentation] 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200628 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-02-02 10:53:36 +00:00
Craig Topper
6b6dfa5c5a Merge x86 HasOpSizePrefix/HasOpSize16Prefix into a 2-bit OpSize field with 0 meaning no 0x66 prefix in any mode. Rename Opsize16->OpSize32 and OpSize->OpSize16. The classes now refer to their operand size rather than the mode in which they need a 0x66 prefix. Hopefully can merge REX_W into this as OpSize64. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200626 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-02-02 09:25:09 +00:00
Craig Topper
1415ca1781 Merge HasVEXPrefix/HasEVEXPrefix/HasXOPPrefix into a 2-bit 'encoding' field in TSFlags. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200624 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-02-02 07:08:01 +00:00
Craig Topper
f0b161d774 Separate x86 opcode maps and 0x66/0xf2/0xf3 prefixes from each other in the TSFlags. This greatly simplifies the switch statements in the disassembler tables and the code emitters. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200522 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-31 08:47:06 +00:00
Craig Topper
45b8e5fa49 Move REP out of the Prefix field of the X86 format. Give it its own bit. It had special handling anyway and this enables a future patch. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200520 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-31 07:00:55 +00:00
Craig Topper
38e6f7301d Simplify x86 disassembler table handling of when to use TYPE_Rv/TYPE_R16/TYPE_R32 now that HasOpSizePrefix only means 16-bit instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199295 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-15 05:02:02 +00:00
Craig Topper
c8fd2c57c8 The rest of r198588. Remove SegOvrBits from X86 TSFlags since they weren't being used. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198589 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-06 06:57:27 +00:00
Craig Topper
527f132627 Add a new x86 specific instruction flag to force some isCodeGenOnly instructions to go through to the disassembler tables without resorting to string matches. Apply flag to all _REV instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198543 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-05 04:17:28 +00:00
Craig Topper
163868fec5 Remove unused HasFROperands field from disassembler. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198332 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-02 18:44:21 +00:00
Craig Topper
e61c70a085 Remove unused function argument. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198291 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-02 03:58:45 +00:00
Elena Demikhovsky
633f98bdfa AVX-512: added VPCONFLICT instruction and intrinsics, 
added EVEX_KZ to tablegen


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193959 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-11-03 13:46:31 +00:00
Elena Demikhovsky
c18f4efc5d Added encoding prefixes for KNL instructions (EVEX). 
Added 512-bit operands printing.
Added instruction formats for KNL instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187324 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-07-28 08:28:38 +00:00
Chandler Carruth
4ffd89fa4d Sort the #include lines for utils/... 
I've tried to find main moudle headers where possible, but the TableGen
stuff may warrant someone else looking at it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169251 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-12-04 10:37:14 +00:00
Craig Topper
8a312fb3aa Remove code for setting the VEX L-bit as a function of operand size from the code emitters and the disassembler table builder. Fix a couple instructions that were still missing VEX_L. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164204 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-19 06:37:45 +00:00
Dmitri Gribenko
2d9eb72178 Fix Doxygen issues: 
* wrap code blocks in \code ... \endcode;
* refer to parameter names in paragraphs correctly (\arg is not what most
  people want -- it starts a new paragraph).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163790 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-13 12:34:29 +00:00
Dmitri Gribenko
a00b80b04c Fix a bunch of -Wdocumentation warnings. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162446 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-08-23 16:54:08 +00:00
Craig Topper
5aba78bd80 Update GATHER instructions to support 2 read-write operands. Patch from myself and Manman Ren. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160110 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-07-12 06:52:41 +00:00
Craig Topper
930a1ebd92 X86 disassembler support for jcxz, jecxz, and jrcxz. Fixes PR11643. Patch by Kay Tiong Khoo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151510 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-02-27 01:54:29 +00:00
Craig Topper
e6a3a2990e Add FMA4 instructions to disassembler. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147367 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-30 05:20:36 +00:00
Craig Topper
b53fa8bf19 Add X86 BZHI instruction as well as BMI2 feature detection. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142122 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-16 07:55:05 +00:00
Craig Topper
17730847d5 Add X86 BEXTR instruction. This instruction uses VEX.vvvv to encode Operand 3 instead of Operand 2 so needs special casing in the disassembler and code emitter. Ultimately, should pass this information from tablegen 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142105 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-16 03:51:13 +00:00
Craig Topper
6744a17dcf Add support in the disassembler for ignoring the L-bit on certain VEX instructions. Mark instructions that have this behavior. Fixes PR10676. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141065 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-04 06:30:42 +00:00
Peter Collingbourne
7c78888887 Move TableGen's parser and entry point into a library 
This is the first step towards splitting LLVM and Clang's tblgen executables.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140951 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-01 16:41:13 +00:00
Craig Topper
4da632e6e0 Don't allow 32-bit only instructions to be disassembled in 64-bit mode. Fixes part of PR10700. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140370 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-09-23 06:57:25 +00:00
Eli Friedman
7105259ce8 Make the disassembler able to disassemble a bunch of instructions with names in the TableGen files containing "64" on x86-32. This includes a bunch of x87 instructions, like fld, and a bunch of SSSE3 instructions on MMX registers like pshufb. Part of PR8873. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135337 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-16 02:41:28 +00:00
Sean Callanan
a21e2eae3d X86 table-generator and disassembler support for the AVX 
instruction set.  This code adds support for the VEX prefix
and for the YMM registers accessible on AVX-enabled
architectures.  Instruction table support that enables AVX
instructions for the disassembler is in an upcoming patch.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127644 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-15 01:23:15 +00:00
Michael J. Spencer
3cc52ea33c I swear I did a make clean and make before committing all this... 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120304 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-29 18:47:54 +00:00
Chris Lattner
c240bb0ede factor the operand list (and related fields/operations) out of 
CodeGenInstruction into its own helper class.  No functionality change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117893 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-01 04:03:32 +00:00
Bruno Cardoso Lopes
99405df044 Reapply r105521, this time appending "LLU" to 64 bit 
immediates to avoid breaking the build.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105652 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-08 22:51:23 +00:00