Chris Lattner
08297ad15d
this is done, tested by CodeGen/ARM/iabs.ll
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llvm-svn: 95609
2010-02-08 23:48:10 +00:00
Jim Grosbach
267430f74d
Fix PR5694. The CMN instructions set the flags differently from CMP, so they
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cannot be directly interchanged for comparisons against negated values.
Disable the CMN instructions for the time being.
llvm-svn: 94119
2010-01-22 00:08:13 +00:00
Jim Grosbach
d7cf55cd0e
Use Unified Assembly Syntax for the ARM backend.
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llvm-svn: 86494
2009-11-09 00:11:35 +00:00
Evan Cheng
a8e8a7c976
Refactor code. Fix a potential missing check. Teach isIdentical() about tLDRpci_pic.
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llvm-svn: 86330
2009-11-07 04:04:34 +00:00
Evan Cheng
115cfc07d5
These are done / no longer care.
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llvm-svn: 85798
2009-11-02 07:58:25 +00:00
Evan Cheng
f6f1b37f9f
Add an entry.
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llvm-svn: 85797
2009-11-02 07:51:19 +00:00
Bob Wilson
c7415bf536
Add a note about Robert Muth's alternate jump table implementation.
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llvm-svn: 85624
2009-10-30 22:22:46 +00:00
Evan Cheng
83e0d481ae
Make ARM and Thumb2 32-bit immediate materialization into a single 32-bit pseudo
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instruction. This makes it re-materializable.
Thumb2 will split it back out into two instructions so IT pass will generate the
right mask. Also, this expose opportunies to optimize the movw to a 16-bit move.
llvm-svn: 82982
2009-09-28 09:14:39 +00:00
Chris Lattner
c667b60b93
add a random codegen deficiency.
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llvm-svn: 77598
2009-07-30 16:08:58 +00:00
Evan Cheng
c26c76ec1d
Disable my constant island pass optimization (to make use soimm more effectively). It caused infinite looping on lencod.
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llvm-svn: 76995
2009-07-24 19:31:03 +00:00
Evan Cheng
c7a243dfdd
Add an entry.
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llvm-svn: 76711
2009-07-22 00:58:27 +00:00
Evan Cheng
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
Evan Cheng
e2c4d35f3e
Add a note about commuting conditional move.
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llvm-svn: 74241
2009-06-26 00:28:48 +00:00
Evan Cheng
cf661fc12a
These are done / no longer applicable.
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llvm-svn: 74239
2009-06-26 00:25:27 +00:00
Bob Wilson
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
Chris Lattner
57662f3882
several entries got significantly better, though they still aren't done.
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llvm-svn: 44382
2007-11-27 22:41:52 +00:00
Chris Lattner
f3f4ad9dd6
implement a trivial readme entry.
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llvm-svn: 44380
2007-11-27 22:36:16 +00:00
Chris Lattner
5d979d57ae
Add an easy microoptimization I noticed.
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llvm-svn: 43164
2007-10-19 03:29:26 +00:00
Chris Lattner
6777b72659
Add some notes about better flag handling.
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llvm-svn: 41808
2007-09-10 21:43:18 +00:00
Evan Cheng
effa7467b6
Update.
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llvm-svn: 38513
2007-07-10 21:49:47 +00:00
Dale Johannesen
8dd36a51fc
Remove item: thumb padding in constant islands
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llvm-svn: 36586
2007-04-30 00:32:06 +00:00
Chris Lattner
3d3f22766a
add a crazy idea
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llvm-svn: 36273
2007-04-20 20:18:43 +00:00
Chris Lattner
2509d7547d
add a note
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llvm-svn: 36203
2007-04-17 18:03:00 +00:00
Evan Cheng
cba9538499
Updated.
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llvm-svn: 35229
2007-03-20 22:32:39 +00:00
Evan Cheng
09663aeac7
Minor stuff.
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llvm-svn: 35049
2007-03-09 19:46:06 +00:00
Evan Cheng
31ef0ab7cf
Add comments about LSR / ARM.
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llvm-svn: 35048
2007-03-09 19:35:33 +00:00
Evan Cheng
603f3094eb
Unfinished work and ideas related to register scavenger.
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llvm-svn: 35047
2007-03-09 19:34:51 +00:00
Dale Johannesen
368faf9acd
apply comments from review of last patch
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llvm-svn: 35045
2007-03-09 19:18:59 +00:00
Dale Johannesen
af0cff2671
Add some observations from CoreGraphics benchmark. Remove register
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scavenging todo item, since it is now implemented.
llvm-svn: 35044
2007-03-09 17:58:17 +00:00
Dale Johannesen
440995bd9a
Add intelligence about where to break large blocks.
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llvm-svn: 34755
2007-02-28 18:41:23 +00:00
Dale Johannesen
c2f3d015e0
cosmetic changes from review of last patch. obvious
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llvm-svn: 34598
2007-02-25 18:31:31 +00:00
Dale Johannesen
01ee5750f4
Removed WaterListOffset, inserted BBOffsets. Remove TODO item about this
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from README.
When no water available, use end of block if in range. (More to do here.)
llvm-svn: 34563
2007-02-25 00:47:03 +00:00
Dale Johannesen
e18b13b213
rewrite of constant islands
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llvm-svn: 34523
2007-02-23 05:02:36 +00:00
Chris Lattner
2d5b4ac38f
add a note
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llvm-svn: 33778
2007-02-02 04:36:46 +00:00
Evan Cheng
10043e215b
ARM backend contribution from Apple.
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llvm-svn: 33353
2007-01-19 07:51:42 +00:00
Rafael Espindola
eb3e8d75df
add note
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llvm-svn: 32452
2006-12-11 23:56:10 +00:00
Rafael Espindola
418c8e69bb
add FSTD and FSTS
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llvm-svn: 30996
2006-10-17 13:36:07 +00:00
Rafael Espindola
677ee8390d
implement LDRB, LDRSB, LDRH and LDRSH
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llvm-svn: 30976
2006-10-16 17:17:22 +00:00
Rafael Espindola
595dc4c884
implement smull and umull
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llvm-svn: 30975
2006-10-16 16:33:29 +00:00
Rafael Espindola
c154dacb2f
add a note
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llvm-svn: 30828
2006-10-09 14:18:33 +00:00
Rafael Espindola
58c368bc4f
implement FLDD
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llvm-svn: 30802
2006-10-07 14:03:39 +00:00
Rafael Espindola
68d238801c
Implement floating point constants
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llvm-svn: 30704
2006-10-03 17:27:58 +00:00
Rafael Espindola
72d4c070c0
add a note
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llvm-svn: 30581
2006-09-22 11:36:17 +00:00
Rafael Espindola
ea500426d6
add a README.txt
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llvm-svn: 29814
2006-08-22 12:22:46 +00:00