Evan Cheng
e7afdb2a42
Add RCBarriers to TargetInstrDesc. It's a list of register classes the given instruction can "clobber". For example, on x86 the call instruction can modify all of the XMM and fp stack registers.
...
TableGen has been taught to generate the lists from instruction definitions.
llvm-svn: 57722
2008-10-17 21:00:09 +00:00
Dan Gohman
214b27286d
Move instruction flag inference out of InstrInfoEmitter and into
...
CodeGenDAGPatterns, where it can be used in other tablegen backends.
This allows the inference to be done for DAGISelEmitter so that it
gets accurate mayLoad/mayStore/isSimpleLoad flags.
This brings MemOperand functionality back to where it was before
48329. However, it doesn't solve the problem of anonymous patterns
which expand to code that does loads or stores.
llvm-svn: 49123
2008-04-03 00:02:49 +00:00
Chris Lattner
6a41e14ee2
start inferring 'no side effects'.
...
llvm-svn: 45822
2008-01-10 05:39:30 +00:00
Chris Lattner
ed75a9c636
remove some old hacky code that tried to infer whether a store
...
occured in a pattern, but failed miserably. The new code works for
any instruction that has a store in its pattern, including all the
x86 mem op mem instructions.
The only target-independent code that uses this is branch folding,
so this won't change anything in practice.
llvm-svn: 45648
2008-01-06 02:16:26 +00:00
Chris Lattner
51500436de
rearrange some code to allow inferring instr info from the pattern of the instr, but don't do so yet.
...
llvm-svn: 45647
2008-01-06 01:53:37 +00:00
Chris Lattner
e0f76407f9
final cleanups.
...
llvm-svn: 45644
2008-01-06 01:21:51 +00:00
Chris Lattner
4eecc7c085
further simplifications and cleanup
...
llvm-svn: 45643
2008-01-06 01:20:13 +00:00
Chris Lattner
1d89a5f45d
simplify some code
...
llvm-svn: 45642
2008-01-06 01:12:44 +00:00
Chris Lattner
5675305d1a
split enum emission out from InstrInfoEmitter into it's own tblgen backend.
...
llvm-svn: 45640
2008-01-06 00:49:05 +00:00
Chris Lattner
c4006845a6
remove attributions from utils.
...
llvm-svn: 45419
2007-12-29 20:37:13 +00:00
Chris Lattner
e1960fc065
simplify the way operand flags and constraints are handled, making it easier
...
to extend.
llvm-svn: 31481
2006-11-06 23:49:51 +00:00
Jeff Cohen
e1003da1a2
Unbreak VC++ build.
...
llvm-svn: 31464
2006-11-05 19:31:28 +00:00
Evan Cheng
c566892bd5
Add operand constraints to TargetInstrInfo.
...
llvm-svn: 31333
2006-11-01 00:27:05 +00:00
Jim Laskey
1c66d7fb02
Emit itinerary class in instruction info.
...
llvm-svn: 24122
2005-10-31 17:16:46 +00:00
Chris Lattner
d44a96088b
Switch more code over to using getValueAsListOfDefs. Look at all the -'s. :)
...
llvm-svn: 24074
2005-10-28 22:59:53 +00:00
Chris Lattner
077a4e87c4
Emit real operand info for instructions. This currently works but is bad
...
in one way: the generated tables require dynamic initialization for the
register classes. This will be fixed in a future patch.
llvm-svn: 22919
2005-08-19 18:46:26 +00:00
Chris Lattner
b312f4d374
When emitting implicit use/def lists, only emit each unique list once. Though
...
LLVM is able to merge identical static const globals, GCC isn't, and this caused
some bloat in the generated data. This has a marginal effect on PPC, shrinking
the implicit sets from 10->4, but shrinks X86 from 179 to 23, a much bigger
reduction.
This should speed up the register allocator as well by reducing the dcache
footprint for this static data.
llvm-svn: 22879
2005-08-18 21:36:47 +00:00
Misha Brukman
960a8d47d7
Remove trailing whitespace
...
llvm-svn: 21428
2005-04-22 00:00:37 +00:00
Chris Lattner
dd0094e4ed
Convert 'struct' to 'class' in various places to adhere to the coding standards
...
and work better with VC++. Patch contributed by Morten Ofstad!
llvm-svn: 17281
2004-10-27 16:14:51 +00:00
Chris Lattner
09d6e317a8
Add, and start using, the CodeGenInstruction class. This class represents
...
an instance of the Instruction tablegen class.
llvm-svn: 15385
2004-08-01 05:04:00 +00:00
Brian Gaeke
d25f86d683
Put all LLVM code into the llvm namespace, as per bug 109.
...
llvm-svn: 9903
2003-11-11 22:41:34 +00:00
John Criswell
fc62e0f40d
Added LLVM copyright header.
...
llvm-svn: 9305
2003-10-20 20:20:30 +00:00
Chris Lattner
1e1215d0d7
Move support/tools/* back into utils
...
llvm-svn: 8875
2003-10-05 19:27:59 +00:00
