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24 Commits

Author SHA1 Message Date
Daniel Dunbar 38a22bffdc Replace std::iostreams with raw_ostream in TableGen. 
- Sorry, I can't help myself.

 - No intended functionality change.

llvm-svn: 74742
 2009-07-03 00:10:29 +00:00
Evan Cheng 010e9b0760 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 fc4ad7de66 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 42c63ef96e start inferring 'no side effects'. 
llvm-svn: 45822
 2008-01-10 05:39:30 +00:00
Chris Lattner e457fd1e9b 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 27a4c1515a 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 85467a17ae final cleanups. 
llvm-svn: 45644
 2008-01-06 01:21:51 +00:00
Chris Lattner 626b89daa4 further simplifications and cleanup 
llvm-svn: 45643
 2008-01-06 01:20:13 +00:00
Chris Lattner 827efa451f simplify some code 
llvm-svn: 45642
 2008-01-06 01:12:44 +00:00
Chris Lattner e59a3c79e5 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 8adcd9f32e remove attributions from utils. 
llvm-svn: 45419
 2007-12-29 20:37:13 +00:00
Chris Lattner 33f5a51020 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 7d6f3db3e2 Unbreak VC++ build. 
llvm-svn: 31464
 2006-11-05 19:31:28 +00:00
Evan Cheng ac79c7c4c0 Add operand constraints to TargetInstrInfo. 
llvm-svn: 31333
 2006-11-01 00:27:05 +00:00
Jim Laskey 0433df136f Emit itinerary class in instruction info. 
llvm-svn: 24122
 2005-10-31 17:16:46 +00:00
Chris Lattner 742606ad30 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 d02bd5bb05 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 99df668f48 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 650ba8eb56 Remove trailing whitespace 
llvm-svn: 21428
 2005-04-22 00:00:37 +00:00
Chris Lattner 7dfc2d29ac 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 c860ecafe1 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 960707c335 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 d3032037f1 Added LLVM copyright header. 
llvm-svn: 9305
 2003-10-20 20:20:30 +00:00
Chris Lattner f5bd1b7a8e Move support/tools/* back into utils 
llvm-svn: 8875
 2003-10-05 19:27:59 +00:00