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5484 Commits

Author SHA1 Message Date
Bill Wendling
7cba44defc Revert r141365. It was causing MultiSource/Benchmarks/MiBench/consumer-lame to 
hang, and possibly SPEC/CINT2006/464_h264ref.

llvm-svn: 141560
 2011-10-10 18:27:30 +00:00
Bill Wendling
94258753c7 When getting the number of bits necessary for addressing mode 
ARMII::AddrModeT1_s, we need to take into account that if the frame register is
ARM::SP, then the number of bits is 8. If it's not ARM::SP, then the number of
bits is 5.

llvm-svn: 141529
 2011-10-10 07:24:23 +00:00
Chad Rosier
2fc181986a Fix a regression from r138445. If we're loading from the frame/base pointer 
the tADDrSPi instruction can't be used.  Make sure we're updating the opcode
to tADDi3 in all cases.
rdar://10254707

llvm-svn: 141523
 2011-10-10 01:03:35 +00:00
Anton Korobeynikov
b0534f0113 Disable ABS optimization for Thumb1 target, we don't have necessary instructions there. 
llvm-svn: 141481
 2011-10-08 08:38:45 +00:00
Jim Grosbach
94980a23e6 ARM NEON assembly parsing and encoding for VDUP(scalar). 
llvm-svn: 141446
 2011-10-07 23:56:00 +00:00
Jim Grosbach
cb48e1fe60 ARM prefix asmparser operand kind enums for readability. 
llvm-svn: 141438
 2011-10-07 23:24:09 +00:00
Bill Wendling
a95511a253 Take all of the invoke basic blocks and make the dispatch basic block their new 
successor. Remove the old landing pad from their successor list, because it's
now the successor of the dispatch block. Now that the landing pad blocks are no
longer the destination of invokes, we can mark them as normal basic blocks
instead of landing pads.

This more closely resembles what the CFG is actually doing.

llvm-svn: 141436
 2011-10-07 23:18:02 +00:00
Bill Wendling
1f7c16c63f Take the code that was emitted for the llvm.eh.dispatch.setup intrinsic and emit 
it with the new SjLj emitter stuff. This way there's no need to emit that
kind-of-hacky intrinsic.

llvm-svn: 141419
 2011-10-07 22:08:37 +00:00
Bill Wendling
0f5b533c48 Thread the chain through the eh.sjlj.setjmp intrinsic, like it's documented to 
do. This will be useful later on with the new SJLJ stuff.

llvm-svn: 141416
 2011-10-07 21:25:38 +00:00
Jim Grosbach
d3c2b772ee Improve ARM assembly parser diagnostic for unexpected tokens. 
Consider:
  mov r8, r11 fred

Previously, we issued the not very informative:
x.s:6:1: error: unexpected token in argument list

^

Now we generate:
x.s:5:14: error: unexpected token in argument list
  mov r8, r11 fred
              ^

llvm-svn: 141380
 2011-10-07 18:27:04 +00:00
Bob Wilson
b55a64ae72 Reenable tail calls for iOS 5.0 and later. 
llvm-svn: 141370
 2011-10-07 17:17:49 +00:00
Bob Wilson
d8856e17fe Reenable use of divmod compiler_rt functions for iOS 5.0 and later. 
llvm-svn: 141368
 2011-10-07 16:59:21 +00:00
Anton Korobeynikov
0944a4c5cc Peephole optimization for ABS on ARM. 
Patch by Ana Pazos!

llvm-svn: 141365
 2011-10-07 16:15:08 +00:00
Bill Wendling
5492d7a175 Use the correct vreg here. 
llvm-svn: 141342
 2011-10-06 23:41:14 +00:00
Bill Wendling
e34c65724b Generate the dispatch code for a 'thumb' function. This is very similar to the 
others. They take the call site value. Determine if it's a proper value. And
then jumps to the correct call site via a jump table.

llvm-svn: 141341
 2011-10-06 23:37:36 +00:00
Owen Anderson
dc57f29896 Fix the check for nested IT instructions in the disassembler. We need to perform the check before adding the Thumb predicate, which pops on entry off the ITBlock queue. 
llvm-svn: 141339
 2011-10-06 23:33:11 +00:00
Bill Wendling
82b6f24ee4 Generate the dispatch table for ARM mode. 
llvm-svn: 141327
 2011-10-06 22:53:00 +00:00
Bill Wendling
3c68e1d212 Refactor some of the code that sets up the entry block for SjLj EH. No functionality change. 
llvm-svn: 141323
 2011-10-06 22:18:16 +00:00
Bill Wendling
c8c252a859 Use a thumb ORR instead of thumb2 ORR when in thumb-only mode. (Picky! Picky!) 
Place the immediate to OR into a register so that it works.

llvm-svn: 141319
 2011-10-06 21:51:21 +00:00
Bill Wendling
e79ca82af3 * Set the low bit of the return address when we are in thumb mode. 
* Some code cleanup.

llvm-svn: 141317
 2011-10-06 21:29:56 +00:00
Peter Collingbourne
253c6a3690 Build system infrastructure for multiple tblgens. 
llvm-svn: 141266
 2011-10-06 01:51:51 +00:00
Bill Wendling
73eb058991 Add the MBBs before inserting the instructions. Doing it afterwards could lead 
to an infinite loop because of the def-use chains.

Also use a frame load instead of store for the LD instruction.

llvm-svn: 141263
 2011-10-06 00:53:33 +00:00
Cameron Zwarich
5fb7c6643e Always merge profitable shifts on A9, not just when they have a single use. 
llvm-svn: 141248
 2011-10-05 23:39:02 +00:00
Cameron Zwarich
cc5f846d58 Remove a check from ARM shifted operand isel helper methods, which were blocking 
merging an lsl #2 that has multiple uses on A9. This shift is free, so there is
no problem merging it in multiple places. Other unprofitable shifts will not be
merged.

llvm-svn: 141247
 2011-10-05 23:38:50 +00:00
Bill Wendling
02aa225b72 Get the proper call site numbers for the landing pads. Also remove a magic 
number (18) for the proper addressing mode.

llvm-svn: 141245
 2011-10-05 23:28:57 +00:00
Owen Anderson
2d1e930b65 Support a valid, but not very useful, encoding of CPSIE where none of the AIF bits are set. 
llvm-svn: 141190
 2011-10-05 17:16:40 +00:00
Cameron Zwarich
1f890576e3 Add braces around something that throws me for a loop. 
llvm-svn: 141173
 2011-10-05 08:59:10 +00:00
Cameron Zwarich
0cb2071d35 There is no point in setting out-parameters for a ComplexPattern function when 
it returns false, at least as far as I could tell by reading the code.

llvm-svn: 141172
 2011-10-05 08:59:05 +00:00
Bill Wendling
da6fd6f972 Look at the number of entries in the jump table and jump to a 'trap' block if 
the value exceeds that number.

llvm-svn: 141143
 2011-10-05 00:39:32 +00:00
Bill Wendling
db8e0d2dee Checkpoint for SJLJ EH code. 
This is a first pass at generating the jump table for the sjlj dispatch. It
currently generates something plausible, but hasn't been tested thoroughly.

llvm-svn: 141140
 2011-10-05 00:02:33 +00:00
Owen Anderson
e255773f3d Teach the MC to output code/data region marker labels in MachO and ELF modes. These are used by disassemblers to provide better disassembly, particularly on targets like ARM Thumb that like to intermingle data in the TEXT segment. 
llvm-svn: 141135
 2011-10-04 23:26:17 +00:00
Kevin Enderby
5a09a8db55 Adding back support for printing operands symbolically to ARM's new disassembler 
using llvm's public 'C' disassembler API now including annotations.

Hooked this up to Darwin's otool(1) so it can again print things like branch
targets for example this:
 blx _puts
instead of this:
 blx #-36
and includes support for annotations for branches to symbol stubs like:
 bl	0x40 @ symbol stub for: _puts
and annotations for pc relative loads like this:
 ldr	r3, #8 @ literal pool for: Hello, world!
Also again can print the expression encoded in the Mach-O relocation entries for
things like this:
 movt r0, :upper16:((_foo-_bar)+1234)

llvm-svn: 141129
 2011-10-04 22:44:48 +00:00
Jim Grosbach
f38874e79e ARM assembly parsing and encoding for VMOV immediate. 
llvm-svn: 141046
 2011-10-03 23:38:36 +00:00
Jim Grosbach
5723a6f6ea Tidy up. 80 columns. 
llvm-svn: 141043
 2011-10-03 23:03:26 +00:00
Bill Wendling
68ee098b5a Use the PC label ID rather than '1'. Add support for thumb-2, because I heard that some people use it. 
llvm-svn: 141042
 2011-10-03 22:44:15 +00:00
Jim Grosbach
c69258c747 ARM parsing/encoding for VCMP/VCMPE. 
llvm-svn: 141038
 2011-10-03 22:30:24 +00:00
Bill Wendling
834bb83a41 Check-pointing the new SjLj EH lowering. 
This code will replace the version in ARMAsmPrinter.cpp. It creates a new
machine basic block, which is the dispatch for the return from a longjmp
call. It then shoves the address of that machine basic block into the correct
place in the function context so that the EH runtime will jump to it directly
instead of having to go through a compare-and-jump-to-the-dispatch bit. This
should be more efficient in the common case.

llvm-svn: 141031
 2011-10-03 21:25:38 +00:00
Jim Grosbach
21a9f8f50f ARM assembly parsing and encoding for VMRS/FMSTAT. 
llvm-svn: 141025
 2011-10-03 21:12:43 +00:00
Jim Grosbach
c7a9669343 Thumb2 ADD/SUB can take SP as a destination register. 
It's documented as a separate instruction to line up with the Thumb1
encodings, for which it really is a distinct instruction encoding.

llvm-svn: 141020
 2011-10-03 20:51:59 +00:00
Chad Rosier
2cb0d1eddf Revert r140924 "Attempt to fix dynamic stack realignment for thumb1 functions." 
to appease nightly testers.  Not quite there yet.

llvm-svn: 140953
 2011-10-01 19:30:36 +00:00
Bill Wendling
d6d232142d No one should be using the method directly. Assert if they do. 
llvm-svn: 140947
 2011-10-01 12:47:34 +00:00
Bill Wendling
3ce912d5b8 Add a convenience method to tell if two things are equal. 
llvm-svn: 140946
 2011-10-01 12:44:28 +00:00
Bill Wendling
a23068ec02 Use the ARMConstantPoolMBB class to handle the MBB values. 
llvm-svn: 140943
 2011-10-01 09:30:42 +00:00
Bill Wendling
a925d1339f Add ARMConstantPoolMBB to hold an MBB value in the constant pool. 
llvm-svn: 140942
 2011-10-01 09:19:10 +00:00
Bill Wendling
aab50632f6 Remove dead code. 
llvm-svn: 140941
 2011-10-01 09:05:12 +00:00
Bill Wendling
0049e4398d Remove now dead methods and ivar. 
llvm-svn: 140940
 2011-10-01 09:04:18 +00:00
Bill Wendling
c7bf6da86d Use the new ARMConstantPoolSymbol class to handle external symbols. 
llvm-svn: 140939
 2011-10-01 08:58:29 +00:00
Bill Wendling
4563d806a7 Add an ARMConstantPool class for external symbols. This will split out the support for external symbols from the base class. 
llvm-svn: 140938
 2011-10-01 08:36:59 +00:00
Bill Wendling
67b6d8a185 Remove now dead methods and ivar from ARMConstantPoolValue. 
llvm-svn: 140937
 2011-10-01 08:02:05 +00:00
Bill Wendling
1d585d7961 Switch over to using ARMConstantPoolConstant for global variables, functions, 
and block addresses.

llvm-svn: 140936
 2011-10-01 08:00:54 +00:00
Bill Wendling
9356ee3bd7 Some more refactoring. 
* Add a couple of Create methods to the ARMConstantPoolConstant class,
* Add its own version of getExistingMachineCPValue, and
* Modify hasSameValue to return false if the object isn't an ARMConstantPoolConstant.

llvm-svn: 140935
 2011-10-01 07:52:37 +00:00
Bill Wendling
9ad0742c3f Add a Create method that accepts 'kind' and 'pcadj' arguments. 
llvm-svn: 140934
 2011-10-01 06:44:24 +00:00
Bill Wendling
33b0c55f4d Refactoring: Separate out the ARM constant pool Constant from the ARM constant 
pool value.

It's not used right now, but will be soon.

llvm-svn: 140933
 2011-10-01 06:40:33 +00:00
Chad Rosier
ff29430882 Attempt to fix dynamic stack realignment for thumb1 functions. It is in fact 
useful if an optimization assumes the stack has been realigned.  Credit to
Eli for his assistance.
rdar://10043857

llvm-svn: 140924
 2011-10-01 02:03:18 +00:00
Jakob Stoklund Olesen
010e9bb778 Store sub-class lists as a bit vector. 
This uses less memory and it reduces the complexity of sub-class
operations:

- hasSubClassEq() and friends become O(1) instead of O(N).

- getCommonSubClass() becomes O(N) instead of O(N^2).

In the future, TableGen will infer register classes.  This makes it
cheap to add them.

llvm-svn: 140898
 2011-09-30 22:19:07 +00:00
Jim Grosbach
355190250f Correct for my over-eager delete finger. 
llvm-svn: 140892
 2011-09-30 22:02:45 +00:00
Bill Wendling
1485fec8b1 Constify 'isLSDA' and move a method out-of-line. 
llvm-svn: 140868
 2011-09-30 18:42:06 +00:00
Jim Grosbach
44047da675 ARM Darwin default relocation model is PIC. 
This matches clang, so default options in llc and friends are now closer to
clang's defaults.

llvm-svn: 140863
 2011-09-30 17:41:35 +00:00
Jim Grosbach
5b31ef50f5 ARM Fixup valus for movt/movw are for the whole value. 
Remove an assert that was expecting only the relevant 16bit portion for
the fixup being handled. Also kill some dead code in the T2 portion.

rdar://9653509

llvm-svn: 140861
 2011-09-30 17:23:05 +00:00
Jim Grosbach
d94ffffc87 ARM fix encoding of VMOV.f32 and VMOV.f64 immediates. 
Encode the immediate into its 8-bit form as part of isel rather than later,
which simplifies things for mapping the encoding bits, allows the removal
of the custom disassembler decoding hook, makes the operand printer trivial,
and prepares things more cleanly for handling these in the asm parser.

rdar://10211428

llvm-svn: 140834
 2011-09-30 00:50:06 +00:00
Bill Wendling
ee48218f94 Create a machine basic block in the constant pool and retrieve the symbol for an MBB. 
llvm-svn: 140824
 2011-09-29 23:50:42 +00:00
Bill Wendling
de36760902 Support creating a constant pool value for a machine basic block. 
This is used when we want to take the address of a machine basic block, but it's
not associated with a BB in LLVM IR.

llvm-svn: 140823
 2011-09-29 23:48:44 +00:00
NAKAMURA Takumi
f82662e1f6 Target/ARM: Unbreak! CMake! Build! 
llvm-svn: 140774
 2011-09-29 03:32:49 +00:00
Jakob Stoklund Olesen
a2a0ba4d56 Delete NEONMoveFix, now unused. 
llvm-svn: 140773
 2011-09-29 02:56:45 +00:00
Jakob Stoklund Olesen
cfd5280df5 Use ExecutionDepsFix instead of NEONMoveFix. 
This enables NEON domain tracking across basic blocks, but should
otherwise do the same thing.

llvm-svn: 140772
 2011-09-29 02:48:41 +00:00
Bill Wendling
cc7e50a465 Move to ISelLowering. 
llvm-svn: 140754
 2011-09-29 01:13:55 +00:00
Evan Cheng
1e53900b70 Tighten a ARM dag combine condition to avoid an identity transformation, which 
ends up introducing a cycle in the DAG.

rdar://10196296

llvm-svn: 140733
 2011-09-28 23:16:31 +00:00
Bill Wendling
2400aacfb7 Perform the lowering only if there are invokes. 
llvm-svn: 140719
 2011-09-28 20:29:45 +00:00
Bill Wendling
37088b0660 Ahem...actually *add* the ARMSjLjLowering pass to the pass manager. 
llvm-svn: 140718
 2011-09-28 20:29:28 +00:00
James Molloy
c4fcff419c Check in a patch that has already been code reviewed by Owen that I'd forgotten to commit. 
Build on previous patches to successfully distinguish between an M-series and A/R-series MSR and MRS instruction. These take different mask names and have a *slightly* different opcode format.

Add decoder and disassembler tests.

Improvement on the previous patch - successfully distinguish between valid v6m and v7m masks (one is a subset of the other). The patch had to be edited slightly to apply to ToT.

llvm-svn: 140696
 2011-09-28 14:21:38 +00:00
Ted Kremenek
d233d7b066 Unbreak CMake build. 
llvm-svn: 140655
 2011-09-27 23:29:59 +00:00
Jakob Stoklund Olesen
2fc08f4eeb Implement TII::get/setExecutionDomain() for ARM. 
llvm-svn: 140653
 2011-09-27 22:57:21 +00:00
Jim Grosbach
b503a2183e ARM Thumb2 asm parsing [SU]XT[BH] without rotate but with .w. 
Add inst alias to handle these assembly forms. Add tests, too.

rdar://10178799

llvm-svn: 140647
 2011-09-27 22:18:54 +00:00
Bill Wendling
c63b31e1ec This is the start of the new SjLj EH preparation pass, which will replace the 
current IR-level pass.

The old SjLj EH pass has some problems, especially with the new EH model. Most
significantly, it violates some of the new restrictions the new model has. For
instance, the 'dispatch' table wants to jump to the landing pad, but we cannot
allow that because only an invoke's unwind edge can jump to a landing pad. This
requires us to mangle the code something awful. In addition, we need to keep the
now dead landingpad instructions around instead of CSE'ing them because the
DWARF emitter uses that information (they are dead because no control flow edge
will execute them - the control flow edge from an invoke's unwind is superceded
by the edge coming from the dispatch).

Basically, this pass belongs not at the IR level where SSA is king, but at the
code-gen level, where we have more flexibility.

llvm-svn: 140646
 2011-09-27 22:14:12 +00:00
Jim Grosbach
e883e939a3 Rename AddSelectionDAGCSEId() to addSelectionDAGCSEId(). 
Naming conventions consistency. No functional change.

llvm-svn: 140636
 2011-09-27 20:59:33 +00:00
Jakob Stoklund Olesen
08b5751146 Use existing function. 
llvm-svn: 140615
 2011-09-27 17:55:08 +00:00
Owen Anderson
79c9401e0e Remove extraneous commit garbage. 
llvm-svn: 140581
 2011-09-26 23:14:02 +00:00
Owen Anderson
7742c81cde ASR #32 is not allowed on Thumb2 USAT and SSAT instructions. 
llvm-svn: 140560
 2011-09-26 21:06:22 +00:00
David Meyer
a6e588d80c PR11004: Inline memcpy to avoid generating nested call sequence. Un-XFAIL 2011-06-09-TailCallByVal and 2010-11-04-BigByval 
llvm-svn: 140516
 2011-09-26 06:13:20 +00:00
Owen Anderson
fc9a0d104c Teach the Thumb2 AsmParser to accept pre-indexed loads/stores with an offset of #-0. 
llvm-svn: 140426
 2011-09-23 22:25:02 +00:00
Jakob Stoklund Olesen
ca6877343b Also match negative offsets for addrmode3 and addrmode5. 
Math is hard, and isScaledConstantInRange() always returned false for
negative constants.  It was doing unsigned division of negative numbers
before casting back to signed.

llvm-svn: 140425
 2011-09-23 22:10:33 +00:00
Owen Anderson
e63c963148 Add more fixed bits to USAT16 encoding to filter out incorrect decodings. 
llvm-svn: 140422
 2011-09-23 21:57:50 +00:00
Owen Anderson
53c6b08ad8 Post-index loads/stores in still need to print the post-indexed immediate, even if it's zero, to distinguish them from non-post-indexed instructions. 
llvm-svn: 140420
 2011-09-23 21:26:40 +00:00
Owen Anderson
071eb7580a Reapply r140412 (Thumb2 reg-reg loads cannot target SP or PC), with invalid testcases updated. 
llvm-svn: 140415
 2011-09-23 21:07:25 +00:00
Owen Anderson
a2cfbf33af Revert r140412. This affects more instructions than intended. 
llvm-svn: 140413
 2011-09-23 21:02:01 +00:00
Owen Anderson
227b8c74fb Thumb2 register-shifted-register loads cannot target the PC or the SP. 
llvm-svn: 140412
 2011-09-23 21:00:32 +00:00
Owen Anderson
22ab29756b Turns out that Thumb2 ADR doesn't need special printing like LDR does. Fix other test failures I caused. 
llvm-svn: 140284
 2011-09-21 23:53:44 +00:00
Owen Anderson
7b134fe54c Print out immediate offset versions of PC-relative load/store instructions as [pc, #123] rather than simply #123. 
llvm-svn: 140283
 2011-09-21 23:44:46 +00:00
Owen Anderson
220db2953c These do not need to be conditional on the presence of CommentStream, as they have a fallback path now. 
llvm-svn: 140267
 2011-09-21 17:58:45 +00:00
Andrew Trick
c94573ded6 Lower ARM adds/subs to add/sub after adding optional CPSR operand. 
This is still a hack until we can teach tblgen to generate the
optional CPSR operand rather than an implicit CPSR def. But the
strangeness is now limited to the selection DAG. ADD/SUB MI's no
longer have implicit CPSR defs, nor do we allow flag setting variants
of these opcodes in machine code. There are several corner cases to
consider, and getting one wrong would previously lead to nasty
miscompilation. It's not the first time I've debugged one, so this
time I added enough verification to ensure it won't happen again.

llvm-svn: 140228
 2011-09-21 02:20:46 +00:00
Andrew Trick
5b514628ed whitespace 
llvm-svn: 140227
 2011-09-21 02:17:37 +00:00
Owen Anderson
fbec62c99e In the disassembler C API, be careful not to confuse the comment streamer that the disassembler outputs annotations on with the streamer that the InstPrinter will print them on. 
llvm-svn: 140217
 2011-09-21 00:25:23 +00:00
Evan Cheng
ead45e2ba6 Fix a bug introduced during refactoring a couple of months ago. Cortex-M3 does not support Thumb2 dsp instructions. rdar://10152911. 
llvm-svn: 140181
 2011-09-20 21:38:18 +00:00
Andrew Trick
bfac89c238 Restore hasPostISelHook tblgen flag. 
No functionality change. The hook makes it explicit which patterns
require "special" handling. i.e. it self-documents tblgen
deficiencies. I plan to add verification in ExpandISelPseudos and
Thumb2SizeReduce to catch any missing hasPostISelHooks. Otherwise it's
too fragile.

llvm-svn: 140160
 2011-09-20 18:22:31 +00:00
Andrew Trick
53aeb9f663 ARM isel bug fix for adds/subs operands. 
Modified ARMISelLowering::AdjustInstrPostInstrSelection to handle the
full gamut of CPSR defs/uses including instructins whose "optional"
cc_out operand is not really optional. This allowed removal of the
hasPostISelHook to simplify the .td files and make the implementation
more robust.
Fixes rdar://10137436: sqlite3 miscompile

llvm-svn: 140134
 2011-09-20 03:17:40 +00:00
Andrew Trick
43ccb48fb2 whitespace 
llvm-svn: 140133
 2011-09-20 03:06:13 +00:00
Jim Grosbach
e936bdc286 Thumb2 assembly parsing and encoding for UXTAB/UXTAB16/UXTH/UXTB/UXTB16/UXTH. 
llvm-svn: 140125
 2011-09-20 00:46:54 +00:00
Jim Grosbach
5ca3bddd26 Thumb2 assembly parsing and encoding for USAX. 
llvm-svn: 140119
 2011-09-20 00:30:45 +00:00
Jim Grosbach
882f1ec6d5 Remove incorrect comments. These are not disassmebly only patterns. 
llvm-svn: 140116
 2011-09-20 00:26:34 +00:00
Jim Grosbach
18a65f1fe6 Thumb2 assembly parsing and encoding for UQASX/UQSAX. 
llvm-svn: 140111
 2011-09-20 00:18:52 +00:00
Jim Grosbach
3de5351645 Thumb1 convenience aliases for disassembler round-trip testing. CPS instruction. 
llvm-svn: 140108
 2011-09-20 00:10:37 +00:00
Jim Grosbach
dd395f87df Thumb CPS definition is not disassembler only. 
llvm-svn: 140106
 2011-09-20 00:00:06 +00:00
Jim Grosbach
794028c0e0 Thumb2 range check on CPS mode immediate. 
llvm-svn: 140105
 2011-09-19 23:58:31 +00:00
Owen Anderson
791a17f64a tMOVSr is not allowed in an IT block either. 
llvm-svn: 140104
 2011-09-19 23:57:20 +00:00
Owen Anderson
3920c43055 CPS instructions are UNPREDICTABLE inside IT blocks. 
llvm-svn: 140102
 2011-09-19 23:47:10 +00:00
Jim Grosbach
011bd172ea Tidy up comments. 
llvm-svn: 140099
 2011-09-19 23:38:34 +00:00
Jim Grosbach
2341e082fc Thumb2 assembly parsing and encoding for UMAAL/UMLAL/UMULL. 
llvm-svn: 140095
 2011-09-19 23:31:02 +00:00
Jim Grosbach
dd8d66f3aa Thumb2 assembly parsing and encoding for UHASX/UHSAX. 
llvm-svn: 140088
 2011-09-19 23:13:25 +00:00
Jim Grosbach
a5a28c45e5 Thumb2 assembly parsing and encoding for UASX. 
llvm-svn: 140085
 2011-09-19 23:05:22 +00:00
Owen Anderson
25138827ef Thumb2 TBB and TBH instructions are only allowed at the end of IT blocks, not in the middle. 
llvm-svn: 140079
 2011-09-19 22:34:23 +00:00
Jim Grosbach
6da9e6b23d Thumb2 assembly parsing and encoding for TBB/TBH. 
llvm-svn: 140078
 2011-09-19 22:21:13 +00:00
Jim Grosbach
207a337a60 Tidy up a bit. 
llvm-svn: 140050
 2011-09-19 20:31:59 +00:00
Jim Grosbach
c7fa5f0c00 Thumb2 assembly parsing and encoding for SXTB/SXTB16/SXTH. 
llvm-svn: 140047
 2011-09-19 20:29:33 +00:00
Owen Anderson
4bf9e290e9 Specify an additional fixed bit in the Thumb2 SSAT encoding to prevent the decoder from emitting gibberish for this invalid encoding. 
llvm-svn: 140041
 2011-09-19 20:00:02 +00:00
Jim Grosbach
57328aa902 ARM asm parsing should handle pre-indexed writeback w/o immediate. 
For example, 'ldrb r9, [sp]!' is odd, but valid.

llvm-svn: 140035
 2011-09-19 18:42:21 +00:00
Owen Anderson
b843f3625d Handle STRT (and friends) like LDRT (and friends) for decoding purposes. Port over additional encoding tests to decoding tests. 
llvm-svn: 140032
 2011-09-19 18:07:10 +00:00
Jim Grosbach
c677995374 Thumb2 assembly parsing and encoding for SXTAB/SXTAB16/SXTAH. 
llvm-svn: 140029
 2011-09-19 17:56:37 +00:00
Owen Anderson
c1f638997d Bitfield mask instructions are unpredictable if the encoded LSB is higher than the encoded MSB. 
llvm-svn: 139972
 2011-09-16 23:30:01 +00:00
Owen Anderson
aec67a3ea1 Fix bitfield decoding based on Eli's feedback. 
llvm-svn: 139969
 2011-09-16 23:04:48 +00:00
Jim Grosbach
95242bff08 Thumb2 assembly parsing and encoding for SUB(immediate). 
llvm-svn: 139966
 2011-09-16 22:58:42 +00:00
Owen Anderson
5d23e1e5b4 Thumb2 pre-indexed loads/stores use the restricted GPR set for Rt. 
llvm-svn: 139965
 2011-09-16 22:42:36 +00:00
Owen Anderson
eae0eee720 Fix disassembly of Thumb2 BFI instructions with bit range of [0, 32). 
llvm-svn: 139964
 2011-09-16 22:29:48 +00:00
Owen Anderson
3a487c8c9b Add fixed bits to correctly distinguish Thumb2 SSAT/SSAT16's. 
llvm-svn: 139958
 2011-09-16 22:17:02 +00:00
Jim Grosbach
d521731d40 Thumb2 assembly parsing and encoding for STR. 
More addressing mode encoding bits. Handle pre increment for STR/STRB/STRH
and STR(register).

llvm-svn: 139949
 2011-09-16 21:55:56 +00:00
Jim Grosbach
371c88528b Tidy up. 80 columns. 
llvm-svn: 139944
 2011-09-16 21:09:00 +00:00
Owen Anderson
5804085f26 Fix disassembly of Thumb2 LDRSH with a #-0 offset. 
llvm-svn: 139943
 2011-09-16 21:08:33 +00:00
Jim Grosbach
916a6c71aa Thumb2 assembly parsing and encoding for STR(immediate). 
Add aliases for STRB/STRH while there. Tests forthcoming for those.

llvm-svn: 139942
 2011-09-16 21:06:12 +00:00
Jim Grosbach
13af7198d5 Thumb2 assembly parsing and encoding for STMIA. 
llvm-svn: 139938
 2011-09-16 20:50:13 +00:00
Jim Grosbach
47ff106753 Thumb2 assembly parsing and encoding for SSAX. 
llvm-svn: 139929
 2011-09-16 18:37:10 +00:00
Jim Grosbach
6f6453f64b Thumb2 assembly parsing and encoding for SSAT. 
llvm-svn: 139926
 2011-09-16 18:32:30 +00:00
Jim Grosbach
5a8b63fe51 Thumb2 assembly parsing and encoding for SRS. 
llvm-svn: 139925
 2011-09-16 18:25:22 +00:00
Jim Grosbach
0f1615c381 Thumb2 assembly parsing and encoding for SMMULL. 
llvm-svn: 139921
 2011-09-16 18:05:48 +00:00
Jim Grosbach
3c3a9393ab Thumb2 assembly parsing and encoding for SMLSLD/SMLSLDX. 
llvm-svn: 139909
 2011-09-16 17:10:44 +00:00
Jim Grosbach
9e471afd9c Thumb2 assembly parsing and encoding for SMLALD/SMLALDX. 
llvm-svn: 139906
 2011-09-16 16:58:03 +00:00
Jim Grosbach
f41c168102 Kill some dead code. 
llvm-svn: 139904
 2011-09-16 16:45:40 +00:00
Jim Grosbach
94fec9618a Tidy up a bit. 
llvm-svn: 139903
 2011-09-16 16:39:25 +00:00
Jim Grosbach
d382581509 Thumb2 assembly parsing and encoding for SMLAL. 
llvm-svn: 139902
 2011-09-16 16:38:00 +00:00
Jim Grosbach
27a086b1d0 Remove incorrect comments. 
llvm-svn: 139877
 2011-09-15 23:45:50 +00:00
Owen Anderson
e54c4beb5a Don't attach annotations to MCInst's. Instead, have the disassembler return, and the printer accept, an annotation string which can be passed through if the client cares about annotations. 
llvm-svn: 139876
 2011-09-15 23:38:46 +00:00
Jim Grosbach
423aae30b2 Thumb2 assembly parsing and encoding for SHASX/SHSAX. 
llvm-svn: 139870
 2011-09-15 22:34:29 +00:00
Eli Friedman
0e654e52d9 Minor cleanup. 
llvm-svn: 139869
 2011-09-15 22:26:18 +00:00
Eli Friedman
1df4766bda Use a more efficient lowering for Unordered/Monotonic atomic load/store on Thumb1. 
llvm-svn: 139865
 2011-09-15 22:18:49 +00:00
Jim Grosbach
1ac9dd8a72 Thumb2 assembly parsing and encoding for SASX. 
llvm-svn: 139843
 2011-09-15 21:01:23 +00:00
Jim Grosbach
553692fcce Thumb2 assembly parsing and encoding for RSB. 
llvm-svn: 139839
 2011-09-15 20:54:14 +00:00
Jim Grosbach
50ee930e9a Thumb2 assembly parsing and encoding for REV16/REVSH. 
llvm-svn: 139828
 2011-09-15 19:46:13 +00:00
Owen Anderson
84d4e5d0e2 Add support for stored annotations to MCInst, and provide facilities for MC-based InstPrinters to print them out. Enhance the ARM and X86 InstPrinter's to do so in verbose mode. 
llvm-svn: 139820
 2011-09-15 18:36:29 +00:00
Jim Grosbach
9d7aa9bcbc Thumb2 assembly parsing and encoding for REV. 
llvm-svn: 139813
 2011-09-15 18:13:30 +00:00
Jim Grosbach
69ddec5ff7 ARM support the pre-UAL mnemonic 'qsubaddx' for 'qsax.' 
llvm-svn: 139796
 2011-09-15 16:16:50 +00:00
Jim Grosbach
d428c970e3 Thumb2 push/pop mnemonic recognition. 
llvm-svn: 139794
 2011-09-15 15:55:04 +00:00
Jim Grosbach
669e269758 Thumb2 assembly parsing and encoding for PKH. 
llvm-svn: 139754
 2011-09-14 23:16:41 +00:00
Jim Grosbach
c1475b0f3f ARMv7a has the PKH instructions. 
llvm-svn: 139753
 2011-09-14 23:16:34 +00:00
Jim Grosbach
1a4f264f52 ARM tighten up the register classes for the PKH instructions. 
llvm-svn: 139748
 2011-09-14 22:52:14 +00:00
Owen Anderson
86f1fb2955 Fix a crasher in Thumb2 MOV-immediate encoding for certain inputs. 
llvm-svn: 139747
 2011-09-14 22:46:14 +00:00
Jim Grosbach
e841adae12 Thumb2 assembly parsing and encoding for MVN. 
llvm-svn: 139739
 2011-09-14 21:24:41 +00:00
Owen Anderson
04d8803035 Nested IT blocks are UNPREDICTABLE. Mark them as such when disassembling them. 
llvm-svn: 139736
 2011-09-14 21:06:21 +00:00
Jim Grosbach
585e3c779f Thumb2 assembly parsing and encoding for MUL. 
llvm-svn: 139735
 2011-09-14 21:00:40 +00:00
Jim Grosbach
b1c70aab3e Thumb2 assembly parsing and encoding for MSR/MRS. 
Fix a bug in handling default flags for both ARM and Thumb encodings.

llvm-svn: 139721
 2011-09-14 20:03:46 +00:00
Jim Grosbach
932d409524 Thumb2 assembly parsing for MOV in IT block. 
Select the right 16 vs. 32 bit encoding in an IT block.

llvm-svn: 139714
 2011-09-14 19:12:11 +00:00
Jim Grosbach
41c8bdfdd9 ARM fix assembly parser handling of ranges in register lists. 
Clean up register list handling in general a bit to explicitly check things
like all the registers being from the same register class.

rdar://8883573

llvm-svn: 139707
 2011-09-14 18:08:35 +00:00
Jim Grosbach
b2ddf62001 Remove unnecessary scope resolution operator. 
llvm-svn: 139656
 2011-09-13 22:56:44 +00:00
Owen Anderson
d0121fe635 Correct disassembly printing of Thumb2 post-incremented LDRD and STRD. 
llvm-svn: 139639
 2011-09-13 20:46:26 +00:00
Jim Grosbach
90b78a6f1f There's only 16 regs legal in a register list. 
llvm-svn: 139637
 2011-09-13 20:35:57 +00:00
Jim Grosbach
74f96e7f3c Tidy up a few 80 column violations. 
llvm-svn: 139636
 2011-09-13 20:30:37 +00:00
Jim Grosbach
a04c99bca5 Tidy up a bit. 
llvm-svn: 139635
 2011-09-13 20:27:44 +00:00
Owen Anderson
b4ed08c465 Teach the Thumb ASM parser that BKPT is allowed in IT blocks, even though it is always executed unconditionally. 
llvm-svn: 139610
 2011-09-13 17:59:19 +00:00
Owen Anderson
5982d4d51b Fix encoding of Thumb2 shifted register operands with RRX shifts. 
llvm-svn: 139606
 2011-09-13 17:34:32 +00:00
Eli Friedman
c6ff621dc5 Zap some junk from the ARM instruction descriptions. 
llvm-svn: 139575
 2011-09-13 02:29:58 +00:00
Jim Grosbach
0b277b24ea Tidy up a bit. 
llvm-svn: 139559
 2011-09-12 23:36:42 +00:00
Owen Anderson
a1a10ed5c6 Thumb2 POP's don't allow the PC as an operand, and PUSH's don't allow the SP either. 
llvm-svn: 139542
 2011-09-12 21:28:46 +00:00
Owen Anderson
0081444d87 Fix encoding of PC-relative LDRSHW with an immediate offset. 
llvm-svn: 139537
 2011-09-12 20:36:51 +00:00
Owen Anderson
b1d401e514 There's no need to add additional predicate operands when converting a tB to a tBfar now. Fixes nightly test failures on armv6 Thumb. <rdar://problem/10110404> 
llvm-svn: 139531
 2011-09-12 20:07:22 +00:00
Owen Anderson
05ef2c122d Port more encoding tests to decoding tests, and correct an improper Thumb2 pre-indexed load decoding this uncovered. 
llvm-svn: 139522
 2011-09-12 18:56:30 +00:00
Jim Grosbach
52492b1cf3 Thumb2 parsing and encoding for MOV(immediate). 
Some aliases for MOV(register) also to keep existing T1 tests happy when
run in thumbv7 mode.

llvm-svn: 139440
 2011-09-10 00:15:36 +00:00
Owen Anderson
9cd21ce8c9 LDM writeback is not allowed if Rn is in the target register list. 
llvm-svn: 139432
 2011-09-09 23:13:33 +00:00
Owen Anderson
ca4447e808 Fix an ambiguously nested if. 
llvm-svn: 139431
 2011-09-09 23:13:02 +00:00
Owen Anderson
58bb862098 Fix buildbot breakage caused by r139415. I missed one instance of a manually create ARM::tB. 
llvm-svn: 139429
 2011-09-09 23:05:14 +00:00
Owen Anderson
dbe77fc5a1 Fix assembly/disassembly of Thumb2 ADR instructions with immediate operands. 
llvm-svn: 139422
 2011-09-09 22:24:36 +00:00
Owen Anderson
a7838cb723 Thumb unconditional branches are allowed in IT blocks, and therefore should have a predicate operand, unlike conditional branches. 
llvm-svn: 139415
 2011-09-09 21:48:23 +00:00
Jim Grosbach
6225a96bf5 Thumb2 assembly parsing and encoding for MLA and MLS. 
llvm-svn: 139399
 2011-09-09 20:24:45 +00:00
Jim Grosbach
915ba5189e Thumb2 assembly parsing and encoding for LDRSB. 
llvm-svn: 139389
 2011-09-09 19:42:40 +00:00
Jim Grosbach
eb2d668899 Thumb2 assembly parsing and encoding for LDREX/LDREXB/LDREXD/LDREXH. 
llvm-svn: 139381
 2011-09-09 18:37:27 +00:00
Owen Anderson
99ad1a853e All conditional branches are disallowed in IT blocks, not just CBZ/CBNZ. 
llvm-svn: 139329
 2011-09-08 22:48:37 +00:00
Owen Anderson
d7127e0c27 Soft fail CBZ/CBNZ in the disassembler if they appear inside an IT block. 
llvm-svn: 139328
 2011-09-08 22:42:49 +00:00
Jim Grosbach
9f150bfedf Thumb2 assembly parsing and encoding for LDRD(immediate). 
Refactor operand handling for STRD as well. Tests for that forthcoming.

llvm-svn: 139322
 2011-09-08 22:07:06 +00:00
Jim Grosbach
5ac3aa158b Thumb2 assembly parsing and encoding for LDR post-indexed. 
More cleanup of the general indexed addressing T2 instructions. Still more to
do, especially for stores.

llvm-svn: 139272
 2011-09-08 01:01:32 +00:00
Jim Grosbach
1aa191032a Thumb2 assembly parsing and encoding for LDR pre-indexed w/ writeback. 
Adjust encoding of writeback load/store instructions to better reflect the
way the operand types are represented.

llvm-svn: 139270
 2011-09-08 00:39:19 +00:00
Owen Anderson
4a5ec6836f Remove the "common" set of instructions shared between ARM and Thumb2 modes. This is no longer needed now that Thumb2 has its own copy of the STC/LDC instructions. 
llvm-svn: 139268
 2011-09-08 00:11:18 +00:00
Jim Grosbach
8b54d19514 Thumb2 assembly parsing and encoding for LDRBT. 
llvm-svn: 139267
 2011-09-07 23:39:14 +00:00
Jim Grosbach
a3ff9eeb85 Thumb2 assembly parsing and encoding for LDR(register). 
llvm-svn: 139264
 2011-09-07 23:10:15 +00:00
Jim Grosbach
d640c62856 Thumb2 assembly parsing and encoding for LDRB(immediate). 
llvm-svn: 139258
 2011-09-07 21:41:25 +00:00
Owen Anderson
26467730c1 Create Thumb2 versions of STC/LDC, and reenable the relevant tests. 
llvm-svn: 139256
 2011-09-07 21:10:42 +00:00
Jim Grosbach
20642fb479 Thumb2 parsing and encoding for LDR(immediate). 
The immediate offset of the non-writeback i8 form (encoding T4) allows
negative offsets only. The positive offset form of the encoding is the
LDRT instruction. Immediate offsets in the range [0,255] use encoding T3
instead.

llvm-svn: 139254
 2011-09-07 20:58:57 +00:00
Jim Grosbach
054b346e46 Thumb2 parsing and encoding for LDMDB. 
llvm-svn: 139251
 2011-09-07 19:57:53 +00:00
James Molloy
ac057f13a5 Second of a three-patch series aiming to fix MSR/MRS on Cortex-M. This adds predicate checking to the Disassembler. 
llvm-svn: 139250
 2011-09-07 19:42:28 +00:00
Jim Grosbach
bd018fd94f Thumb2 ldm/stm 'db' mnemonics don't have a '.w' suffix. 
There is no 16-bit wide encoding, so the .w suffix isn't needed (indeed, isn't
documented as allowed). Also add the missing '!' token on the _UPD
variant.

llvm-svn: 139243
 2011-09-07 18:39:47 +00:00
Jim Grosbach
20689d28e7 Thumb2 parsing and encoding for LDMIA. 
Choose 32-bit vs. 16-bit encoding when there's no .w suffix in post-processing
as match classes are insufficient to handle the context-sensitiveness of
the writeback operand's legality for the 16-bit encodings.

llvm-svn: 139242
 2011-09-07 18:05:34 +00:00
Owen Anderson
4106b9fb31 Port more assembler tests over to disassembler tests, and fix a minor logic error that exposed. 
llvm-svn: 139240
 2011-09-07 17:55:19 +00:00
James Molloy
f781d3d8e9 Refactor instprinter and mcdisassembler to take a SubtargetInfo. Add -mattr= handling to llvm-mc. Reviewed by Owen Anderson. 
llvm-svn: 139237
 2011-09-07 17:24:38 +00:00
Jim Grosbach
c0ebdea61f Thumb2 use 'ldm' as default mnemonic. 
Handle explicit 'ia' suffix via a MnemonicAlias (pre-existing).

llvm-svn: 139234
 2011-09-07 16:22:42 +00:00
Jim Grosbach
7969f880c0 Better diagnostic location information for mnemonic suffices. 
llvm-svn: 139232
 2011-09-07 16:06:04 +00:00