a8ad97743d
Slightly change the meaning of the reMaterialize target hook when the original
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instruction defines subregisters.
Any existing subreg indices on the original instruction are preserved or
composed with the new subreg index.
Also substitute multiple operands mentioning the original register by using the
new MachineInstr::substituteRegister() function. This is necessary because there
will soon be <imp-def> operands added to non read-modify-write partial
definitions. This instruction:
%reg1234:foo = FLAP %reg1234<imp-def>
will reMaterialize(%reg3333, bar) like this:
%reg3333:bar-foo = FLAP %reg333:bar<imp-def>
Finally, replace the TargetRegisterInfo pointer argument with a reference to
indicate that it cannot be NULL.
llvm-svn: 105358
2010-06-02 22:47:25 +00:00
047a767d74
Remove the target hook TargetInstrInfo::BlockHasNoFallThrough in favor of
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MachineBasicBlock::canFallThrough(), which is target-independent and more
thorough.
llvm-svn: 90634
2009-12-05 00:44:40 +00:00
6ad7da96fe
- Change TargetInstrInfo::reMaterialize to pass in TargetRegisterInfo.
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- If destination is a physical register and it has a subreg index, use the
sub-register instead.
This fixes PR5423.
llvm-svn: 88745
2009-11-14 02:55:43 +00:00
207b246650
- Add pseudo instructions tLDRpci_pic and t2LDRpci_pic which does a pc-relative
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load of a GV from constantpool and then add pc. It allows the code sequence to
be rematerializable so it would be hoisted by machine licm.
- Add a late pass to break these pseudo instructions into a number of real
instructions. Also move the code in Thumb2 IT pass that breaks up t2MOVi32imm
to this pass. This is done before post regalloc scheduling to allow the
scheduler to proper schedule these instructions. It also allow them to be
if-converted and shrunk by later passes.
llvm-svn: 86304
2009-11-06 23:52:48 +00:00
14635da94b
Use NEON reg-reg moves, where profitable. This reduces "domain-cross" stalls, when we used to mix vfp and neon code (the former were used for reg-reg moves)
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llvm-svn: 85764
2009-11-02 00:10:38 +00:00
f43cf709cb
Remove ARM specific getInlineAsmLength. We'll rely on the simpler (and faster) generic algorithm for now. If more accurate computation is needed, we'll rely on the disassembler.
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llvm-svn: 78032
2009-08-04 01:56:09 +00:00
e98a3c3ca3
Move the getInlineAsmLength virtual method from TAI to TII, where
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the only real caller (GetFunctionSizeInBytes) uses it.
The custom ARM implementation of this is basically reimplementing
an assembler poorly for negligible gain. It should be removed
IMNSHO, but I'll leave that to ARMish folks to decide.
llvm-svn: 77877
2009-08-02 05:20:37 +00:00
780748d565
- More refactoring. This gets rid of all of the getOpcode calls.
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- This change also makes it possible to switch between ARM / Thumb on a
per-function basis.
- Fixed thumb2 routine which expand reg + arbitrary immediate. It was using
using ARM so_imm logic.
- Use movw and movt to do reg + imm when profitable.
- Other code clean ups and minor optimizations.
llvm-svn: 77300
2009-07-28 05:48:47 +00:00
cdd405d804
Correctly handle the Thumb-2 imm8 addrmode. Specialize frame index elimination more exactly for Thumb-2 to get better code gen.
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llvm-svn: 76919
2009-07-24 00:16:18 +00:00
6deba28c6f
Fix frame index elimination to correctly handle thumb-2 addressing modes that don't allow negative offsets. During frame elimination convert *i12 opcode to a *i8 when necessary due to a negative offset.
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llvm-svn: 76883
2009-07-23 17:06:46 +00:00
84517443ca
Let callers decide the sub-register index on the def operand of rematerialized instructions.
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Avoid remat'ing instructions whose def have sub-register indices for now. It's just really really hard to get all the cases right.
llvm-svn: 75900
2009-07-16 09:20:10 +00:00
af7451b674
Checkpoint Thumb2 Instr info work. Generalized base code so that it can be shared between ARM and Thumb2. Not yet activated because register information must be generalized first.
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llvm-svn: 75010
2009-07-08 16:09:28 +00:00
14965760a7
Add a Thumb2 instruction flag to that indicates whether the instruction can be transformed to 16-bit variant.
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llvm-svn: 74988
2009-07-08 01:46:35 +00:00
ade05a37f1
Checkpoint refactoring of ThumbInstrInfo and ThumbRegisterInfo into Thumb1InstrInfo, Thumb2InstrInfo, Thumb1RegisterInfo and Thumb2RegisterInfo. Move methods from ARMInstrInfo to ARMBaseInstrInfo to prepare for sharing with Thumb2.
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llvm-svn: 74731
2009-07-02 22:18:33 +00:00
deb35afd23
Add a new addressing mode for NEON load/store instructions.
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llvm-svn: 74658
2009-07-01 23:16:05 +00:00
57726817aa
A few more load instructions.
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llvm-svn: 74500
2009-06-30 02:15:48 +00:00
b23b50d54d
Implement Thumb2 ldr.
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After much back and forth, I decided to deviate from ARM design and split LDR into 4 instructions (r + imm12, r + imm8, r + r << imm12, constantpool). The advantage of this is 1) it follows the latest ARM technical manual, and 2) makes it easier to reduce the width of the instruction later. The down side is this creates more inconsistency between the two sub-targets. We should split ARM LDR instruction in a similar fashion later. I've added a README entry for this.
llvm-svn: 74420
2009-06-29 07:51:04 +00:00
a1b5b18bd0
ARM refactoring. Step 2: split RegisterInfo
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llvm-svn: 74384
2009-06-27 12:16:40 +00:00
99152f3a2c
Split thumb-related stuff into separate classes.
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Step 1: ARMInstructionInfo => {ARM,Thumb}InstructionInfo
llvm-svn: 74329
2009-06-26 21:28:53 +00:00
2e076c4e02
Add support for ARM's Advanced SIMD (NEON) instruction set.
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This is still a work in progress but most of the NEON instruction set
is supported.
llvm-svn: 73919
2009-06-22 23:27:02 +00:00
64dfcacd5f
Turns out AnalyzeBranch can modify the mbb being analyzed. This is a nasty
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suprise to some callers, e.g. register coalescer. For now, add an parameter
that tells AnalyzeBranch whether it's safe to modify the mbb. A better
solution is out there, but I don't have time to deal with it right now.
llvm-svn: 64124
2009-02-09 07:14:22 +00:00
066757eea1
Move getPointerRegClass from TargetInstrInfo to TargetRegisterInfo.
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llvm-svn: 63938
2009-02-06 17:43:24 +00:00
c544cb0eca
Change TargetInstrInfo::isMoveInstr to return source and destination sub-register indices as well.
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llvm-svn: 62600
2009-01-20 19:12:24 +00:00
3f86b51333
Split foldMemoryOperand into public non-virtual and protected virtual
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parts, and add target-independent code to add/preserve
MachineMemOperands.
llvm-svn: 60488
2008-12-03 18:43:12 +00:00
0b2732598c
Add more const qualifiers. This fixes build breakage from r59540.
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llvm-svn: 59542
2008-11-18 19:49:32 +00:00
fabdcce677
Handle the rest of pseudo instructions.
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llvm-svn: 59275
2008-11-13 23:36:57 +00:00
2666f59322
Fix pre- and post-indexed load / store encoding bugs.
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llvm-svn: 59230
2008-11-13 07:34:59 +00:00
2836d91630
Fix address mode 3 immediate offset mode encoding.
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llvm-svn: 59109
2008-11-12 07:34:37 +00:00
af644b50b4
Consolidate formats; fix FCMPED etc. encodings.
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llvm-svn: 59107
2008-11-12 07:18:38 +00:00
4b6c7efbde
Fix VFP conversion instruction encodings.
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llvm-svn: 59104
2008-11-12 06:41:41 +00:00
97ccab888a
Fix FMDRR encoding.
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llvm-svn: 59088
2008-11-11 22:46:12 +00:00
8cbbcb1f2f
Encode VFP load / store instructions.
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llvm-svn: 59084
2008-11-11 21:48:44 +00:00
38c9a14a88
Encode VFP conversion instructions.
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llvm-svn: 59074
2008-11-11 19:40:26 +00:00
ac2af2fdb2
Encode VFP arithmetic instructions.
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llvm-svn: 59016
2008-11-11 02:11:05 +00:00
98dc53e926
Encode misc arithmetic instructions.
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llvm-svn: 58828
2008-11-07 01:41:35 +00:00
49d665218c
Encode extend instructions; more clean up.
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llvm-svn: 58818
2008-11-06 22:15:19 +00:00
aa03cd3336
- Improve naming consistency: Branch -> BrFrm, BranchMisc -> BrMiscFrm.
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- Consolidate instruction formats.
- Other clean up.
llvm-svn: 58808
2008-11-06 17:48:05 +00:00
47b546d75f
Remove opcode from instruction TS flags; add MOVCC support; fix addrmode3 encoding bug.
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llvm-svn: 58800
2008-11-06 08:47:38 +00:00
36ae40342f
Handle smul<x><y>, smulw<y>, smla<x><y>, smlaw<y>.
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llvm-svn: 58793
2008-11-06 03:35:07 +00:00
2686c8fb34
Fix encoding of multiple instructions with 3 src operands; also handle smmul, smmla, and smmls.
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llvm-svn: 58789
2008-11-06 01:21:28 +00:00
81889d010c
Restructure ARM code emitter to use instruction formats instead of addressing modes to determine how to encode instructions.
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llvm-svn: 58764
2008-11-05 18:35:52 +00:00
4d0549e3be
Add binary encoding support for multiply instructions. Some blanks left to fill in, but the basics are there.
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llvm-svn: 58626
2008-11-03 18:38:31 +00:00
33332bce17
Const-ify several TargetInstrInfo methods.
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llvm-svn: 57622
2008-10-16 01:49:15 +00:00
b53acd8caa
need ARM.h for ARMCC definition
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llvm-svn: 57261
2008-10-07 21:01:51 +00:00
c084e84028
Encode the conditional execution predicate when JITing.
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llvm-svn: 57258
2008-10-07 19:05:35 +00:00
12134701ec
Revert 56176. All those instruction formats are still needed.
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llvm-svn: 56180
2008-09-13 01:35:33 +00:00
c5c74f36fd
Eliminate unnecessary instruction formats.
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llvm-svn: 56176
2008-09-12 23:15:39 +00:00
33fa89c6fb
Rewrite address mode 1 code emission routines.
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llvm-svn: 56171
2008-09-12 22:01:15 +00:00
27fb3dcbc7
Make TargetInstrInfo::copyRegToReg return a bool indicating whether the copy requested
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was inserted or not. This allows bitcast in fast isel to properly handle the case
where an appropriate reg-to-reg copy is not available.
llvm-svn: 55375
2008-08-26 18:03:31 +00:00
4f6bf04616
Convert uses of std::vector in TargetInstrInfo to SmallVector. This change had to be propoagated down into all the targets and up into all clients of this API.
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llvm-svn: 54802
2008-08-14 22:49:33 +00:00
Jakob Stoklund Olesen