151cd8f159
Cleanup of ARMv7M support. Move hardware divide and Thumb2 extract/pack
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instructions to subtarget features and update tests to reflect.
PR5717.
llvm-svn: 103136
2010-05-05 23:44:43 +00:00
92d999001c
Add initial support for ARMv7M subtarget and cortex-m3 cpu. Patch by
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Jordy <snhjordy@gmail.com>.
Followup patches will add some tests and adjust to use Subtarget features
for the instructions.
llvm-svn: 103119
2010-05-05 20:44:35 +00:00
bcaf681cde
Add const qualifiers to CodeGen's use of LLVM IR constructs.
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llvm-svn: 101334
2010-04-15 01:51:59 +00:00
71fcb4fedd
switch the flag for using NEON for SP floating point to a subtarget 'feature'.
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Re-commit. This time complete with testsuite updates.
llvm-svn: 99570
2010-03-25 23:47:34 +00:00
42bb89c7d9
need to fix 'make check' tests first. revert for a moment.
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llvm-svn: 99569
2010-03-25 23:34:05 +00:00
7fce4e39aa
switch the flag for using NEON for SP floating point to a subtarget 'feature'
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llvm-svn: 99568
2010-03-25 23:32:19 +00:00
a43386ba8f
switch the use-vml[as] instructions flag to a subtarget 'feature'
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llvm-svn: 99565
2010-03-25 23:11:16 +00:00
4b3b2ef65c
ARM cortex-a8 doesn't do vmla/vmls well. disable them by default for that cpu
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llvm-svn: 99549
2010-03-25 20:48:50 +00:00
34de7768bf
Make the use of the vmla and vmls VFP instructions controllable via cmd line.
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Preliminary testing shows significant performance wins by not using these
instructions.
llvm-svn: 99436
2010-03-24 22:31:46 +00:00
0a65a37344
Add substarget feature for FP16
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llvm-svn: 98503
2010-03-14 18:42:38 +00:00
bf16a17fc1
Initial bits of ARMv4-only support.
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Patch by John Tytgat!
llvm-svn: 97886
2010-03-06 19:39:36 +00:00
091217be6f
Kill ModuleProvider and ghost linkage by inverting the relationship between
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Modules and ModuleProviders. Because the "ModuleProvider" simply materializes
GlobalValues now, and doesn't provide modules, it's renamed to
"GVMaterializer". Code that used to need a ModuleProvider to materialize
Functions can now materialize the Functions directly. Functions no longer use a
magic linkage to record that they're materializable; they simply ask the
GVMaterializer.
Because the C ABI must never change, we can't remove LLVMModuleProviderRef or
the functions that refer to it. Instead, because Module now exposes the same
functionality ModuleProvider used to, we store a Module* in any
LLVMModuleProviderRef and translate in the wrapper methods. The bindings to
other languages still use the ModuleProvider concept. It would probably be
worth some time to update them to follow the C++ more closely, but I don't
intend to do it.
Fixes http://llvm.org/PR5737 and http://llvm.org/PR5735 .
llvm-svn: 94686
2010-01-27 20:34:15 +00:00
505ddaa4dc
Remove isProfitableToDuplicateIndirectBranch target hook. It is profitable
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for all the processors where I have tried it, and even when it might not help
performance, the cost is quite low. The opportunities for duplicating
indirect branches are limited by other factors so code size does not change
much due to tail duplicating indirect branches aggressively.
llvm-svn: 90144
2009-11-30 18:35:03 +00:00
2522908653
Materialize global addresses via movt/movw pair, this is always better
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than doing the same via constpool:
1. Load from constpool costs 3 cycles on A9, movt/movw pair - just 2.
2. Load from constpool might stall up to 300 cycles due to cache miss.
3. Movt/movw does not use load/store unit.
4. Less constpool entries => better compiler performance.
This is only enabled on ELF systems, since darwin does not have needed
relocations (yet).
llvm-svn: 89720
2009-11-24 00:44:37 +00:00
290e9a47a9
Add a target hook to allow changing the tail duplication limit based on the
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contents of the block to be duplicated. Use this for ARM Cortex A8/9 to
be more aggressive tail duplicating indirect branches, since it makes it
much more likely that they will be predicted in the branch target buffer.
Testcase coming soon.
llvm-svn: 89187
2009-11-18 03:34:27 +00:00
b9fe5d5d02
Allow target to specify regclass for which antideps will only be broken along the critical path.
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llvm-svn: 88682
2009-11-13 19:52:48 +00:00
0d412c2528
Fixed to address code review. No functional changes.
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llvm-svn: 86634
2009-11-10 00:48:55 +00:00
343d17d762
I am no spelling bee.
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llvm-svn: 84250
2009-10-16 06:18:09 +00:00
03da4dba59
Enable post-alloc scheduling for all ARM variants except for Thumb1.
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llvm-svn: 84249
2009-10-16 06:11:08 +00:00
8cd7c92613
Add comment.
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llvm-svn: 84246
2009-10-16 05:33:58 +00:00
1cc6dd97da
Remove neonfp attribute and instead set default based on CPU string. Add -arm-use-neon-fp to override the default.
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llvm-svn: 83218
2009-10-01 22:19:57 +00:00
9a051a5922
Restore the -post-RA-scheduler flag as an override for the target specification. Remove -mattr for setting PostRAScheduler enable and instead use CPU string.
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llvm-svn: 83215
2009-10-01 21:46:35 +00:00
17199b56b0
Remove -post-RA-schedule flag and add a TargetSubtarget method to enable post-register-allocation scheduling. By default it is off. For ARM, enable/disable with -mattr=+/-postrasched. Enable by default for cortex-a8.
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llvm-svn: 83122
2009-09-30 00:10:16 +00:00
1b38952c99
Reference to hidden symbols do not have to go through non-lazy pointer in non-pic mode. rdar://7187172.
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llvm-svn: 80904
2009-09-03 07:04:02 +00:00
43b9ca6f42
Let Darwin linker auto-synthesize stubs and lazy-pointers. This deletes a bunch of nasty code in ARM asm printer.
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llvm-svn: 80404
2009-08-28 23:18:09 +00:00
4cc1feff4f
Remove some dead code.
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llvm-svn: 78219
2009-08-05 18:12:37 +00:00
3b9c52c5c1
Initial support for single-precision FP using NEON. Added "neonfp" attribute to enable. Added patterns for some binary FP operations.
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llvm-svn: 78081
2009-08-04 17:53:06 +00:00
31b44e8f6c
Normalize Subtarget constructors to take a target triple string instead of
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Module*.
Also, dropped uses of TargetMachine where unnecessary. The only target which
still takes a TargetMachine& is Mips, I would appreciate it if someone would
normalize this to match other targets.
llvm-svn: 77918
2009-08-02 22:11:08 +00:00
6ab54fdb0a
Fix Thumb2 function call isel. Thumb1 and Thumb2 should share the same
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instructions for calls since BL and BLX are always 32-bit long and BX is always
16-bit long.
Also, we should be using BLX to call external function stubs.
llvm-svn: 77756
2009-08-01 00:16:10 +00:00
482495695e
Use thumb2 for ARM architectures V6T2 and later. Fix a bug in checking
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for "thumb" and add a check for V6T2.
llvm-svn: 73905
2009-06-22 21:28:22 +00:00
4582530a2c
For Darwin on ARMv6 and newer, make register r9 available for use as a
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caller-saved register.
llvm-svn: 73901
2009-06-22 21:01:46 +00:00
a0ca298f8a
Remove UseThumbBacktraces. Just check if subtarget is darwin.
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llvm-svn: 73734
2009-06-18 23:14:30 +00:00
77d1943637
The attached patches implement most of the ARM AAPCS-VFP hard float
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ABI. The missing piece is support for putting "homogeneous aggregates"
into registers.
Patch by Sandeep Patel!
llvm-svn: 73095
2009-06-08 22:53:56 +00:00
12694bd8ac
Implement review feedback. Make thumb2 'normal' subtarget feature
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llvm-svn: 72698
2009-06-01 20:00:48 +00:00
b6f4538683
Add placeholder for thumb2 stuff
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llvm-svn: 72593
2009-05-29 23:41:08 +00:00
0b91cc4260
Add ARMv7 architecture, Cortex processors and different FPU modes handling.
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llvm-svn: 72337
2009-05-23 19:51:43 +00:00
08bf4c0f5a
Propagate CPU string out of SubtargetFeatures
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llvm-svn: 72335
2009-05-23 19:50:50 +00:00
0ee0da841d
ARM target now also recognize triplets like thumbv6-apple-darwin and set thumb mode and arch subversion. Eventually thumb triplets will go way and replaced with function notes.
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llvm-svn: 66435
2009-03-09 20:25:39 +00:00
ec415efb44
Recognize triplets starting with armv5-, armv6- etc. And set the ARM arch version accordingly.
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llvm-svn: 66365
2009-03-08 04:02:49 +00:00
f3ebc3f3d2
Remove attribution from file headers, per discussion on llvmdev.
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llvm-svn: 45418
2007-12-29 20:36:04 +00:00
9f8301413c
Added -march=thumb; removed -enable-thumb.
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llvm-svn: 34521
2007-02-23 03:14:31 +00:00
048e16ff8f
Add ABI information to ARM subtarget.
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llvm-svn: 34245
2007-02-13 19:52:28 +00:00
181fe36d6c
Introduce TargetType's ELF and Darwin.
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llvm-svn: 33363
2007-01-19 19:22:40 +00:00
10043e215b
ARM backend contribution from Apple.
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llvm-svn: 33353
2007-01-19 07:51:42 +00:00
Jim Grosbach