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19 Commits

Author SHA1 Message Date
Andrew Trick 73d7736b17 misched: Added MultiIssueItineraries. 
This allows a subtarget to explicitly specify the issue width and
other properties without providing pipeline stage details for every
instruction.

llvm-svn: 157979
 2012-06-05 03:44:40 +00:00
Peter Collingbourne 84c287e33c Move TableGen's parser and entry point into a library 
This is the first step towards splitting LLVM and Clang's tblgen executables.

llvm-svn: 140951
 2011-10-01 16:41:13 +00:00
Evan Cheng 54b68e3432 - Added MCSubtargetInfo to capture subtarget features and scheduling 
itineraries.
- Refactor TargetSubtarget to be based on MCSubtargetInfo.
- Change tablegen generated subtarget info to initialize MCSubtargetInfo
  and hide more details from targets.

llvm-svn: 134257
 2011-07-01 20:45:01 +00:00
Evan Cheng 8264e272a9 Sink SubtargetFeature and TargetInstrItineraries (renamed MCInstrItineraries) into MC. 
llvm-svn: 134049
 2011-06-29 01:14:12 +00:00
Andrew Trick 8a05f66139 Add annotations to tablegen-generated processor itineraries, or replace them with something meaningful. I want to be able to read and debug the generated tables. 
llvm-svn: 128703
 2011-04-01 02:22:47 +00:00
Andrew Trick db6ed64529 whitespace 
llvm-svn: 128701
 2011-04-01 01:56:55 +00:00
Evan Cheng 0097dd0d5a Add support to model pipeline bypass / forwarding. 
llvm-svn: 115005
 2010-09-28 23:50:49 +00:00
Evan Cheng 367a5df8cf For each instruction itinerary class, specify the number of micro-ops each 
instruction in the class would be decoded to. Or zero if the number of
uOPs must be determined dynamically.

This will be used to determine the cost-effectiveness of predicating a
micro-coded instruction.

llvm-svn: 113513
 2010-09-09 18:18:55 +00:00
Anton Korobeynikov 7d62e33291 Make processor FUs unique for given itinerary. This extends the limit of 32 
FU per CPU arch to 32 per intinerary allowing precise modelling of quite
complex pipelines in the future.

llvm-svn: 101754
 2010-04-18 20:31:01 +00:00
David Goodwin d813cbfe72 Extend the instruction itinerary model to include the ability to indicate the def and use cycle for each operand. This additional information is optional, so existing itineraries do not need to be changed. 
llvm-svn: 79247
 2009-08-17 16:02:57 +00:00
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
Chris Lattner 8adcd9f32e remove attributions from utils. 
llvm-svn: 45419
 2007-12-29 20:37:13 +00:00
Jim Laskey 802748cd61 Allow itineraries to be passed through the Target Machine. 
llvm-svn: 24139
 2005-11-01 20:06:59 +00:00
Jim Laskey 3763a50d82 Generate cpu to itinerary map. 
llvm-svn: 24121
 2005-10-31 17:16:01 +00:00
Jim Laskey dffe5978a3 Removed Mr. Smith from the code. 
llvm-svn: 24070
 2005-10-28 21:47:29 +00:00
Jim Laskey 86f002cc32 Now generating instruction itineraries for scheduling. Not my best work, but... 
llvm-svn: 24050
 2005-10-27 19:47:21 +00:00
Jim Laskey a2b5235fac Give full control of subtarget features over to table generated code. 
llvm-svn: 24013
 2005-10-26 17:30:34 +00:00
Jim Laskey 1b7369b1ae Refactored to make room for more stuff (scheduling info.) 
llvm-svn: 23975
 2005-10-25 15:16:36 +00:00
Jim Laskey cfda85ad91 New TableGen backends for subtarget information. Only command line stuff 
active now.  Scheduling itinerary next.

llvm-svn: 23869
 2005-10-21 19:00:04 +00:00