0860520527
Add specializations of addrmode2 that allow differentiating those forms
...
which require the use of the shifter-operand. This will be used to split
the ldr/str instructions such that those versions needing the shifter operand
can get a different scheduling itenerary, as in some cases, the use of the
shifter can cause different scheduling than the simpler forms.
llvm-svn: 115066
2010-09-29 19:03:54 +00:00
2259d67a33
Separate itinerary classes for mvn from mov; for tst / teq from cmp / cmn.
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llvm-svn: 115010
2010-09-29 00:49:25 +00:00
c35d7bbe43
Assign bitwise binary instructions different itinerary classes from ALU instructions such as add / sub.
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llvm-svn: 115008
2010-09-29 00:27:46 +00:00
62d626ce86
Fix zero and sign extension instructions scheduling itineraries.
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llvm-svn: 114780
2010-09-25 00:49:35 +00:00
1d35ad62cc
Fix scheduling itinerary for pseudo mov immediate instructions which expand into two real instructions.
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llvm-svn: 114766
2010-09-24 22:03:46 +00:00
2c5df619c4
Revert r114703 and r114702, removing the isConditionalMove flag from instructions. After further
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reflection, this isn't going to achieve the purpose I intended it for. Back to the drawing board!
llvm-svn: 114710
2010-09-23 23:45:25 +00:00
2f3728f576
#+4 --> #4 for consistency with other asm output
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llvm-svn: 114706
2010-09-23 23:32:38 +00:00
07f07290d8
Fix formatting of output .s code
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llvm-svn: 114705
2010-09-23 23:03:26 +00:00
bd57e0ce3d
Add isConditionalMove bits to X86 and ARM instructions.
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llvm-svn: 114703
2010-09-23 22:57:01 +00:00
8503054410
Clean up the 'trap' instruction printing a bit. Non-Darwin assemblers don't
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(yet) recognize the 'trap' mnemonic, so we use .short/.long to emit the
opcode directly. On Darwin, however, we do want the mnemonic for more
readable assembly code and better disassembly.
Adjust the .td file to use the 'trap' mnemonic and handle using the binutils
workaround in the assembly printer. Also tweak the formatting of the opcode
values to make them consistent between the MC printer and the old printer.
llvm-svn: 114679
2010-09-23 18:05:37 +00:00
0e023ea02a
fix a long standing wart: all the ComplexPattern's were being
...
passed the root of the match, even though only a few patterns
actually needed this (one in X86, several in ARM [which should
be refactored anyway], and some in CellSPU that I don't feel
like detangling). Instead of requiring all ComplexPatterns to
take the dead root, have targets opt into getting the root by
putting SDNPWantRoot on the ComplexPattern.
llvm-svn: 114471
2010-09-21 20:31:19 +00:00
ac0ad0f634
Reword since this may not be a bug but intended behavior.
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llvm-svn: 113584
2010-09-10 10:31:11 +00:00
722cd122dc
Fix LDM_RET schedule itinery.
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llvm-svn: 113435
2010-09-08 22:57:08 +00:00
39eccb4754
temporarily revert r112664, it is causing a decoding conflict, and
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the testcases should be merged.
llvm-svn: 112711
2010-09-01 16:00:50 +00:00
6789f8b6ae
We have a chance for an optimization. Consider this code:
...
int x(int t) {
if (t & 256)
return -26;
return 0;
}
We generate this:
tst.w r0, #256
mvn r0, #25
it eq
moveq r0, #0
while gcc generates this:
ands r0, r0, #256
it ne
mvnne r0, #25
bx lr
Scandalous really!
During ISel time, we can look for this particular pattern. One where we have a
"MOVCC" that uses the flag off of a CMPZ that itself is comparing an AND
instruction to 0. Something like this (greatly simplified):
%r0 = ISD::AND ...
ARMISD::CMPZ %r0, 0 @ sets [CPSR]
%r0 = ARMISD::MOVCC 0, -26 @ reads [CPSR]
All we have to do is convert the "ISD::AND" into an "ARM::ANDS" that sets [CPSR]
when it's zero. The zero value will all ready be in the %r0 register and we only
need to change it if the AND wasn't zero. Easy!
llvm-svn: 112664
2010-08-31 22:41:22 +00:00
d657d82597
And ANDS pattern to match the t2ANDS pattern.
...
llvm-svn: 112654
2010-08-31 22:05:37 +00:00
fef37287a8
Make ARM add rN, sp, #imm instructions rematerializable. That's how the address of locals is calculated, so this should
...
help relieve register pressure a bit. Recalculating the local address is
almost always going to be better than spilling.
llvm-svn: 112503
2010-08-30 19:49:58 +00:00
8fc2b590b9
Fix whitespaces. No functionality changes.
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llvm-svn: 112421
2010-08-29 11:31:07 +00:00
ac64ed0923
File missing from last commit.
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llvm-svn: 112394
2010-08-29 03:02:28 +00:00
a9c03f4fae
Reapply r112176 without removing the other CMN patterns (that was unintentional).
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llvm-svn: 112206
2010-08-26 18:33:51 +00:00
e2cbaf6ed7
Don't call tablegen'ed Predicate_* functions in the ARM target.
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llvm-svn: 111277
2010-08-17 20:39:04 +00:00
62800a990b
80 column cleanup.
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llvm-svn: 111266
2010-08-17 18:39:16 +00:00
942b10f511
Change ARM PKHTB and PKHBT instructions to use a shift_imm operand to avoid
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printing "lsl #0". This fixes the remaining parts of pr7792. Make
corresponding changes for encoding/decoding these instructions.
llvm-svn: 111251
2010-08-17 17:23:19 +00:00
804f6159f1
Generalize a pattern for PKHTB: an SRL of 16-31 bits will guarantee
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that the high halfword is zero. The shift need not be exactly 16 bits.
llvm-svn: 111196
2010-08-16 22:26:55 +00:00
481d7a9ab4
Rename sat_shift operand to shift_imm, in preparation for using it for other
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instructions besides saturate instructions. No functional changes.
llvm-svn: 111168
2010-08-16 18:27:34 +00:00
8303fbbcf9
Remove unused code.
...
llvm-svn: 111154
2010-08-16 17:06:03 +00:00
8e8f1c133a
Cleaned up the for-disassembly-only entries in the arm instruction table so that
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the memory barrier variants (other than 'SY' full system domain read and write)
are treated as one instruction with option operand.
llvm-svn: 110951
2010-08-12 20:46:17 +00:00
d59c73f998
Changed the format of DMBsy, DSBsy, and friends from Pseudo to MiscFrm.
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Added two test cases to arm-tests.txt.
llvm-svn: 110880
2010-08-11 23:35:12 +00:00
add513112a
Move the ARM SSAT and USAT optional shift amount operand out of the
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instruction opcode. This also fixes part of PR7792.
llvm-svn: 110875
2010-08-11 23:10:46 +00:00
91033bed94
Really control isel of barrier instructions with cpu feature.
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llvm-svn: 110787
2010-08-11 06:36:31 +00:00
6e809de90c
- Add subtarget feature -mattr=+db which determine whether an ARM cpu has the
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memory and synchronization barrier dmb and dsb instructions.
- Change instruction names to something more sensible (matching name of actual
instructions).
- Added tests for memory barrier codegen.
llvm-svn: 110785
2010-08-11 06:22:01 +00:00
920f74aaab
Mark ARM compare instructions as isCompare.
...
llvm-svn: 110761
2010-08-11 00:22:27 +00:00
9664984be8
Add a separate ARM instruction format for Saturate instructions.
...
(I discovered 2 more copies of the ARM instruction format list, bringing the
total to 4!! Two of them were already out of sync. I haven't yet gotten into
the disassembler enough to know the best way to fix this, but something needs
to be done.) Add support for encoding these instructions.
llvm-svn: 110754
2010-08-11 00:01:18 +00:00
b1021395b8
Fix indentation.
...
llvm-svn: 110363
2010-08-05 19:00:21 +00:00
72de307116
Add an ARM RSCrr instruction for disassembly only.
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Partial fix for PR7792.
llvm-svn: 110361
2010-08-05 18:59:36 +00:00
adb93e56a3
Add an ARM RSBrr instruction for disassembly only.
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Partial fix for PR7792.
llvm-svn: 110358
2010-08-05 18:23:43 +00:00
b128824b60
Move newlines before inline jumptables from the asm strings in .td files to
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the jtblock_operand print methods. This avoids extra newlines in the
disassembler's output. PR7757.
llvm-svn: 109948
2010-07-31 06:28:10 +00:00
c4a96c0e8c
Add builtins for ssat/usat, similar to RealView's __ssat and __usat intrinsics.
...
llvm-svn: 109813
2010-07-29 22:48:09 +00:00
7010a71ac4
Add intrinsics __builtin_arm_qadd & __builtin_arm_qsub to allow access to the QADD & QSUB instructions.
...
Behave identically to __qadd & __qsub RealView instruction intrinsics.
llvm-svn: 109770
2010-07-29 17:56:55 +00:00
c445a7d29b
ARM mode version of r109693. Remove incorrect substitution pattern for UXTB16. It wrongly assumed the input shift was actually a rotate. rdar://8240138
...
llvm-svn: 109696
2010-07-28 23:25:44 +00:00
11013eda5a
Add basic support to code-gen the ARM/Thumb2 bit-field insert (BFI) instruction
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and a combine pattern to use it for setting a bit-field to a constant
value. More to come for non-constant stores.
llvm-svn: 108570
2010-07-16 23:05:05 +00:00
a90af1ba38
Improve 64-subtraction of immediates when parts of the immediate can fit
...
in the literal field of an instruction. E.g.,
long long foo(long long a) {
return a - 734439407618LL;
}
rdar://7038284
llvm-svn: 108339
2010-07-14 17:45:16 +00:00
0cc4ad983d
Extend the r107852 optimization which turns some fp compare to code sequence using only i32 operations. It now optimize some f64 compares when fp compare is exceptionally slow (e.g. cortex-a8). It also catches comparison against 0.0.
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llvm-svn: 108258
2010-07-13 19:27:42 +00:00
e2289285ae
Changes to ARM tail calls, mostly cosmetic.
...
Add explicit testcases for tail calls within the same module.
Duplicate some code to humor those who think .w doesn't apply on ARM.
Leave this disabled on Thumb1, and add some comments explaining why it's hard
and won't gain much.
llvm-svn: 107851
2010-07-08 01:18:23 +00:00
523e554afa
LEApcrelJT shouldn't be marked as neverHasSideEffects, as we don't want it
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being moved around away from the jump table it references. rdar://8104340
llvm-svn: 106483
2010-06-21 21:27:27 +00:00
d5c58b76ab
Fix PR 7433. Silly typo in non-Darwin ARM tail call
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handling, plus correct R9 handling in that mode.
llvm-svn: 106434
2010-06-21 18:21:49 +00:00
e5fcd333da
Indentation and remove dead code.
...
llvm-svn: 106362
2010-06-19 00:11:54 +00:00
589ffb4902
Fix ARM/Thumb reversal in previous attempt.
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llvm-svn: 106314
2010-06-18 21:07:47 +00:00
a06c2f79fc
An attempt to fix the problem Anton reported with
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ARM tail calls. Don't know if it works, but it
doesn't break Darwin.
llvm-svn: 106309
2010-06-18 20:44:28 +00:00
3ac52b3e43
Last round of changes for ARM tail calls.
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Not turning them on yet.
llvm-svn: 106295
2010-06-18 18:13:11 +00:00
Jim Grosbach