Evan Cheng
cc474b4864
Model :upper16: and :lower16: as ARM specific MCTargetExpr. This is a step
...
in the right direction. It eliminated some hacks and will unblock codegen
work. But it's far from being done. It doesn't reject illegal expressions,
e.g. (FOO - :lower16:BAR). It also doesn't work in Thumb2 mode at all.
llvm-svn: 123369
2011-01-13 07:58:56 +00:00
Daniel Dunbar
3567bd2bcb
McARM: Mark some T2 ...s instructions as codegen only, they aren't real
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instructions but are restricted pseudo forms.
llvm-svn: 123177
2011-01-10 15:26:39 +00:00
Jim Grosbach
9017f2d179
Add bits 31-28 to the Thumb2 encoding of TBB/TBH.
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llvm-svn: 122076
2010-12-17 18:42:56 +00:00
Jim Grosbach
30e7f0d09e
Tweak a few pseudo-inst pattern base classes.
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llvm-svn: 121878
2010-12-15 19:03:16 +00:00
Jim Grosbach
8278d5692a
The new t2LEApcrel* pseudo instructions need the size specified.
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rdar://8768390
llvm-svn: 121876
2010-12-15 18:48:45 +00:00
Jim Grosbach
ef58d5968e
trailing whitespace.
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llvm-svn: 121789
2010-12-14 20:46:39 +00:00
Owen Anderson
c84f8c23b3
Second attempt at make Thumb2 LEAs pseudos. This time, perform the lowering much later, which makes the entire
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process cleaner.
llvm-svn: 121735
2010-12-14 00:36:49 +00:00
Owen Anderson
af1dde2673
Revert r121721, which broke buildbots.
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llvm-svn: 121726
2010-12-13 22:51:08 +00:00
Owen Anderson
c298c8ed4d
Make Thumb2 LEA-like instruction into pseudos, which map down to ADR. Provide correct fixups for Thumb2 ADR,
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which is _of course_ different from ARM ADR fixups, or any other Thumb2 fixup.
llvm-svn: 121721
2010-12-13 22:29:52 +00:00
Owen Anderson
4ec912b842
In Thumb2, direct branches can be encoded as either a "short" conditional branch with a null predicate, or
...
as a "long" direct branch. While the mnemonics are the same, they encode the branch offset differently, and
the Darwin assembler appears to prefer the "long" form for direct branches. Thus, in the name of bitwise
equivalence, provide encoding and fixup support for it.
llvm-svn: 121710
2010-12-13 19:31:11 +00:00
Owen Anderson
44ad90c850
Fix Thumb2 encodings of STREX and LDREX.
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llvm-svn: 121579
2010-12-10 21:52:38 +00:00
Jim Grosbach
82dd80c956
Correct encoding of rotation immediate for Thumb2 instructions. rdar://8755999
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llvm-svn: 121525
2010-12-10 21:24:18 +00:00
Jim Grosbach
467e860805
More trivial cleanup. No need to define the EncoderMethod property type. Can
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just assign to it.
llvm-svn: 121523
2010-12-10 20:53:44 +00:00
Owen Anderson
96545f21b9
Fix encoding of the immediate operands on post-indexed LDR and friends.
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llvm-svn: 121354
2010-12-09 02:56:12 +00:00
Jim Grosbach
e38a2a39c6
The add/sub SP instructions are really pseudos. The assembler should ignore
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them.
llvm-svn: 121345
2010-12-09 01:21:27 +00:00
Owen Anderson
b956593730
Fix Thumb2 BCC encoding and fixups.
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llvm-svn: 121329
2010-12-09 00:27:41 +00:00
Jim Grosbach
5a00173ead
Clean up the add/sub w/ SP source reg instructions in Thumb2 a bit. Add a FIXME
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for more thorough cleanup.
llvm-svn: 121315
2010-12-08 23:30:19 +00:00
Jim Grosbach
2eda2e0be9
Fix T2TwoRegImm and use it for t2ADDrSPi12 and friends.
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llvm-svn: 121314
2010-12-08 23:24:29 +00:00
Jim Grosbach
7a9e43e642
T2TwoRegImm isn't right for t2SUBrSPi12. Use T2I instead.
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llvm-svn: 121311
2010-12-08 23:13:01 +00:00
Jim Grosbach
4f11f0f871
Add operand encoding for Thumb2 subw SP + imm. rdar://8745434
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llvm-svn: 121310
2010-12-08 23:12:09 +00:00
Jim Grosbach
a423fbc4c7
Add operand encoding for Thumb2 addw Rn + imm. rdar://8745434
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llvm-svn: 121309
2010-12-08 23:04:16 +00:00
Jim Grosbach
51082ed2a4
Add operand encoding for Thumb2 addw SP + imm. rdar://8745434
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llvm-svn: 121305
2010-12-08 22:50:19 +00:00
Jim Grosbach
e1eb84a44a
Parameterize opcode encoding bits for Thumb2 extended precision integer
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multiply instructions.
llvm-svn: 121301
2010-12-08 22:38:41 +00:00
Jim Grosbach
13c16125f1
Fix operand encoding for Thumb2 extended precision multiplies. rdar://8745555
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llvm-svn: 121297
2010-12-08 22:29:28 +00:00
Jim Grosbach
063c38c6df
Simplify T2 operand assignment notation a bit. No need to specify a bit range
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for the source field when it's the whole thing that's being referenced.
llvm-svn: 121291
2010-12-08 22:10:43 +00:00
Owen Anderson
a23e10f29d
Fix Thumb2 encoding of the S bit.
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llvm-svn: 121182
2010-12-07 20:50:15 +00:00
Jim Grosbach
1aa6a676cf
Refactor the ARM CMPz* patterns to just use the normal CMP instructions when
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possible. They were duplicates for everything exception the source pattern
before.
llvm-svn: 121179
2010-12-07 20:41:06 +00:00
Owen Anderson
81f8b084e6
Second attempt at converting Thumb2's LDRpci, including updating the gazillion places that need to know about it.
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llvm-svn: 121082
2010-12-07 00:45:21 +00:00
Owen Anderson
8e9cb84ea2
Revert r121021, which broke the buildbots.
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llvm-svn: 121026
2010-12-06 18:57:40 +00:00
Owen Anderson
0c51a02230
Improve handling of Thumb2 PC-relative loads by converting LDRpci (and friends) to Pseudos.
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llvm-svn: 121021
2010-12-06 18:35:51 +00:00
Jim Grosbach
0bd3b0fd6c
Trailing whitespace.
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llvm-svn: 120748
2010-12-02 23:05:38 +00:00
Owen Anderson
8802c68592
Add correct encodings for STRD and LDRD, including fixup support. Additionally, update these to unified syntax.
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llvm-svn: 120589
2010-12-01 19:18:46 +00:00
Owen Anderson
5aff471eb8
Simplify the encoding of reg+/-imm12 values that allow PC-relative encoding. This allows the
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Thumb2 encoding to share code with the ARM encoding, which gets use fixup support for free.
It also allows us to fold away at least one codegen-only pattern.
llvm-svn: 120481
2010-11-30 22:45:47 +00:00
Owen Anderson
20a6f2bd2e
Provide Thumb2 encodings for a few miscellaneous instructions.
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llvm-svn: 120455
2010-11-30 20:00:01 +00:00
Owen Anderson
5f7b3e919b
Add encoding support for Thumb2 PLD and PLI instructions.
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llvm-svn: 120449
2010-11-30 19:19:31 +00:00
Owen Anderson
6581027075
Provide encodings for a few more load/store variants.
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llvm-svn: 120439
2010-11-30 18:38:28 +00:00
Owen Anderson
b6e1c56c79
Correct Thumb2 encodings for a much wider range of loads and stores.
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llvm-svn: 120364
2010-11-30 00:14:31 +00:00
Owen Anderson
14abbb1a2e
Provide Thumb2 encodings for basic loads and stores.
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llvm-svn: 120340
2010-11-29 22:44:32 +00:00
Evan Cheng
78baa6f30d
Mark Darwin call instructions as using "r7" to prevent the frame-register
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assignment instructions from being moved below / above calls.
rdar://8690640
llvm-svn: 120339
2010-11-29 22:43:27 +00:00
Jim Grosbach
90cb1bbd23
Nuke dead isCodeGenOnly annotation and extraneous comment.
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llvm-svn: 120338
2010-11-29 22:40:58 +00:00
Jim Grosbach
208782384a
tidy up.
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llvm-svn: 120335
2010-11-29 22:38:48 +00:00
Jim Grosbach
89e90b7310
Pseudo-ize Thumb2 jump tables with explicit MC lowering to the raw
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instructions. This simplifies instruction printing and disassembly.
llvm-svn: 120333
2010-11-29 22:37:40 +00:00
Jim Grosbach
71042b51a1
Rename t2 TBB and TBH instructions to reference that they encode the jump table
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data. Next up, pseudo-izing them.
llvm-svn: 120320
2010-11-29 21:28:32 +00:00
Owen Anderson
4b82810d8c
Improving the factoring of several instruction encodings.
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llvm-svn: 120317
2010-11-29 20:38:48 +00:00
Owen Anderson
049177ff7f
Thumb2 encodings for MSR and MRS.
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llvm-svn: 120309
2010-11-29 19:29:15 +00:00
Owen Anderson
78d84a1921
Thumb2 encodings for system instructions.
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llvm-svn: 120307
2010-11-29 19:22:08 +00:00
Owen Anderson
b29182b60f
Thumb2 encodings for branches and IT blocks.
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llvm-svn: 120306
2010-11-29 18:54:38 +00:00
Jim Grosbach
48531dd967
Remove trailing whitespace.
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llvm-svn: 119806
2010-11-19 17:11:02 +00:00
Owen Anderson
99c5ea71f7
Fix decoding ambiguities of stdrex and ldrex.
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llvm-svn: 119801
2010-11-19 13:11:50 +00:00
Evan Cheng
4a88903266
Fix an obvious oversight.
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llvm-svn: 119792
2010-11-19 06:15:10 +00:00