Nate Begeman
6c42f509bc
Invert the TargetLowering flag that controls divide by consant expansion.
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Add a new flag to TargetLowering indicating if the target has really cheap
signed division by powers of two, make ppc use it. This will probably go
away in the future.
Implement some more ISD::SDIV folds in the dag combiner
Remove now dead code in the x86 backend.
llvm-svn: 23853
2005-10-21 00:02:42 +00:00
Nate Begeman
2b0b27775d
Enable targets to say that integer divide is expensive, which will trigger
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an upcoming optimization in the DAG Combiner.
llvm-svn: 23834
2005-10-20 02:14:14 +00:00
Nate Begeman
ee581735d9
Add the ability to lower return instructions to TargetLowering. This
...
allows us to lower legal return types to something else, to meet ABI
requirements (such as that i64 be returned in two i32 regs on Darwin/ppc).
llvm-svn: 23802
2005-10-18 23:23:37 +00:00
Chris Lattner
4bb574585f
Fix case of path
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llvm-svn: 23605
2005-10-03 03:32:39 +00:00
Chris Lattner
3a47224042
This member can be const too
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llvm-svn: 23600
2005-10-03 00:21:25 +00:00
Chris Lattner
b19d4e5584
Expose the actual valuetype of each register class
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llvm-svn: 23583
2005-10-02 06:23:19 +00:00
Chris Lattner
c744d9398f
Rename MRegisterDesc -> TargetRegisterDesc for consistency
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llvm-svn: 23564
2005-09-30 17:49:27 +00:00
Chris Lattner
6124aae803
trim down the target info structs now that we have a preferred spill register class for each callee save register
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llvm-svn: 23560
2005-09-30 17:35:22 +00:00
Chris Lattner
18454e037b
expose a new virtual method
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llvm-svn: 23555
2005-09-30 07:06:37 +00:00
Chris Lattner
ec85d13393
Change these methods to take RC's
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llvm-svn: 23535
2005-09-30 01:28:14 +00:00
Chris Lattner
62922d5727
Add a new flag for targets where setjmp/longjmp saves/restores the signal mask,
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and _setjmp/_longjmp should be used instead (for llvm.setjmp/llvm.longjmp).
llvm-svn: 23479
2005-09-27 22:13:36 +00:00
Chris Lattner
e8cb4e7356
add a new callback
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llvm-svn: 23373
2005-09-17 01:02:45 +00:00
Jim Laskey
1f9c40400c
Add help support for -mcpu and -mattr.
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llvm-svn: 23222
2005-09-02 19:27:43 +00:00
Chris Lattner
49eef12127
Move a bunch of non-deprecated methods above the "deprecated line"
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llvm-svn: 23216
2005-09-02 18:16:20 +00:00
Jeff Cohen
930e81f03b
Fix VC++ build errors
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llvm-svn: 23210
2005-09-02 02:51:42 +00:00
Jim Laskey
f32ef9a37f
1. Use SubtargetFeatures in llc/lli.
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2. Propagate feature "string" to all targets.
3. Implement use of SubtargetFeatures in PowerPCTargetSubtarget.
llvm-svn: 23192
2005-09-01 21:38:21 +00:00
Jim Laskey
09a731071f
This new class provides support for platform specific "features". The intent
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is to manage processor specific attributes from the command line. See examples
of use in llc/lli and PowerPCTargetSubtarget.
llvm-svn: 23191
2005-09-01 21:36:18 +00:00
Reid Spencer
31b20389f9
Change the names of member variables per Chris' instructions, and document
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them more clearly.
llvm-svn: 23118
2005-08-27 19:09:02 +00:00
Chris Lattner
e91069c4de
add some forward defs
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llvm-svn: 23100
2005-08-26 21:06:40 +00:00
Chris Lattner
ac19224b29
spell this right!
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llvm-svn: 23097
2005-08-26 20:53:44 +00:00
Chris Lattner
98bd9339ce
Add a hook
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llvm-svn: 23096
2005-08-26 20:53:09 +00:00
Chris Lattner
fd72abe85b
Add a new instruction flag
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llvm-svn: 23093
2005-08-26 20:31:24 +00:00
Chris Lattner
b71b78a79d
rename hasNativeSupportFor* -> is(Operation|Type)Legal.
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llvm-svn: 23011
2005-08-24 16:34:59 +00:00
Chris Lattner
6fcfaee2fc
Add a new field to TargetInstrDescriptor for tracking information about
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operands.
llvm-svn: 22908
2005-08-19 16:56:26 +00:00
Nate Begeman
a978ae8b7d
Remove the X86 and PowerPC Simple instruction selectors; their time has
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passed.
llvm-svn: 22886
2005-08-18 23:53:15 +00:00
Chris Lattner
feb0442901
Since getSubtarget() always provides a const Subtarget, dont' require the user
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to pass it in. Also, since it always returns a non-null pointer, make it
return a reference instead for easier use.
llvm-svn: 22686
2005-08-05 21:53:21 +00:00
Jeff Cohen
81980781a1
Eliminate tabs and trailing spaces.
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llvm-svn: 22520
2005-07-27 05:53:44 +00:00
Andrew Lenharth
8fc535e9bd
allow constants to be relocated like GV (necessary for alpha, as constants are relocated with globals, not with .text), and allow targets to have a GOT managed for them
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llvm-svn: 22496
2005-07-22 20:46:42 +00:00
Reid Spencer
40c5ebe4eb
For: memory operations -> stores
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This is the first incremental patch to implement this feature. It adds no
functionality to LLVM but setup up the information needed from targets in
order to implement the optimization correctly. Each target needs to specify
the maximum number of store operations for conversion of the llvm.memset,
llvm.memcpy, and llvm.memmove intrinsics into a sequence of store operations.
The limit needs to be chosen at the threshold of performance for such an
optimization (generally smallish). The target also needs to specify whether
the target can support unaligned stores for multi-byte store operations.
This helps ensure the optimization doesn't generate code that will trap on
an alignment errors.
More patches to follow.
llvm-svn: 22468
2005-07-19 04:52:44 +00:00
Nate Begeman
0a08ce9c07
Clean up and add comments to the newly implemented subtarget code.
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llvm-svn: 22396
2005-07-12 03:04:49 +00:00
Nate Begeman
4d96f2769c
Clean up the TargetSubtarget class a bit, removing an unnecessary argument
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to the constructor.
llvm-svn: 22392
2005-07-12 02:41:19 +00:00
Nate Begeman
626fb671c8
Implement Subtarget support
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Implement the X86 Subtarget.
This consolidates the checks for target triple, and setting options based
on target triple into one place. This allows us to convert the asm printer
and isel over from being littered with "forDarwin", "forCygwin", etc. into
just having the appropriate flags for each subtarget feature controlling
the code for that feature.
This patch also implements indirect external and weak references in the
X86 pattern isel, for darwin. Next up is to convert over the asm printers
to use this new interface.
llvm-svn: 22389
2005-07-12 01:41:54 +00:00
Chris Lattner
bf100c8bdb
Make several cleanups to Andrews varargs change:
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1. Pass Value*'s into lowering methods so that the proper pointers can be
added to load/stores from the valist
2. Intrinsics that return void should only return a token chain, not a token
chain/retval pair.
3. Rename LowerVAArgNext -> LowerVAArg, because VANext is long gone.
llvm-svn: 22338
2005-07-05 19:57:53 +00:00
Chris Lattner
82cdeff6db
add some new file types
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llvm-svn: 22286
2005-06-25 03:31:43 +00:00
Chris Lattner
37688fa81f
refactor these interfaces a bit
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llvm-svn: 22281
2005-06-25 02:47:50 +00:00
Andrew Lenharth
108f509fb5
header file changes for varargs
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llvm-svn: 22253
2005-06-18 18:31:30 +00:00
Tanya Lattner
e8f3fe8b46
Added ModuloSchedSB as a friend class.
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llvm-svn: 22237
2005-06-17 03:59:51 +00:00
Chris Lattner
ae59fdbd99
Pass the dag into LowerOperation
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llvm-svn: 22005
2005-05-14 05:51:05 +00:00
Chris Lattner
9d788e93a6
Add an isTailCall flag to LowerCallTo
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llvm-svn: 21958
2005-05-13 18:50:42 +00:00
Chris Lattner
ccb86c9acc
LowerCallTo now takes the cc to use
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llvm-svn: 21901
2005-05-12 19:57:08 +00:00
Chris Lattner
045b3f0110
Add a little hook
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llvm-svn: 21883
2005-05-12 02:02:21 +00:00
Chris Lattner
05d8a36ba7
Expose an option allowing unsafe math optimizations. Patch contributed by
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Morten Ofstad!
llvm-svn: 21630
2005-04-30 04:09:52 +00:00
Reid Spencer
e952b16f37
Shut GCC 4.0 up about classes that have virtual functions but a non-virtual
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destructor. Just add the do-nothing virtual destructor.
llvm-svn: 21524
2005-04-25 02:55:55 +00:00
Misha Brukman
353d27c5fc
* The aesthetic police is on patrol!!...
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* ... but it wasn't so busy as to not smell the roses and doxygenify comments
llvm-svn: 21487
2005-04-23 22:35:26 +00:00
Chris Lattner
9484bc95af
Add a helper method
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llvm-svn: 21486
2005-04-23 22:20:22 +00:00
Misha Brukman
5e38b1e17e
Convert tabs to spaces
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llvm-svn: 21438
2005-04-22 03:46:24 +00:00
Misha Brukman
58c97e67f3
Remove trailing whitespace
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llvm-svn: 21412
2005-04-21 20:59:05 +00:00
Nate Begeman
ecb5b5c028
Make pattern isel default for ppc
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Add new ppc beta option related to using condition registers
Make pattern isel control flag (-enable-pattern-isel) global and tristate
0 == off
1 == on
2 == target default
llvm-svn: 21309
2005-04-15 22:12:16 +00:00
Chris Lattner
f275f2af41
Allow targets which produce setcc results in non-MVT::i1 registers to describe
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what the contents of the top bits of these registers are, in the common cases
of targets that sign and zero extend the results.
llvm-svn: 21145
2005-04-07 19:41:18 +00:00
Nate Begeman
e0ab2218d1
Change LowerCallTo to take a boolean isVarArg argument. This is needed
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by the PowerPC backend, and probably others in the future.
llvm-svn: 20843
2005-03-26 01:30:30 +00:00