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43 Commits

Author SHA1 Message Date
Craig Topper 8cd9eaef01 Declare some for loop indices inside the for loop statement. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162085 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-08-17 05:42:16 +00:00
Craig Topper c056483fc6 Fix up indentation of outputted decode function for readability. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162082 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-08-17 05:16:15 +00:00
Benjamin Kramer 95d235ddb6 Fix a const violation in the generated disassembler. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161940 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-08-15 10:26:44 +00:00
Jim Grosbach fc1a161d76 Switch the fixed-length disassembler to be table-driven. 
Refactor the TableGen'erated fixed length disassemblmer to use a
table-driven state machine rather than a massive set of nested
switch() statements.

As a result, the ARM Disassembler (ARMDisassembler.cpp) builds much more
quickly and generates a smaller end result. For a Release+Asserts build on
a 16GB 3.4GHz i7 iMac w/ SSD:

Time to compile at -O2 (averaged w/ hot caches):
  Previous: 35.5s
  New:       8.9s

TEXT size:
  Previous: 447,251
  New:      297,661

Builds in 25% of the time previously required and generates code 66% of
the size.

Execution time of the disassembler is only slightly slower (7% disassembling
10 million ARM instructions, 19.6s vs 21.0s). The new implementation has
not yet been tuned, however, so the performance should almost certainly
be recoverable should it become a concern.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161888 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-08-14 19:06:05 +00:00
Jakob Stoklund Olesen 6f36fa981a Write llvm-tblgen backends as functions instead of sub-classes. 
The TableGenBackend base class doesn't do much, and will be removed
completely soon.

Patch by Sean Silva!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158311 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-06-11 15:37:55 +00:00
Silviu Baranga 545b962f15 Second part for the 153874 one 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153875 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-04-02 15:46:46 +00:00
Craig Topper 5a4c790c06 More const-correcting of FixedLenDecoderEmitter. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152906 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-03-16 06:52:56 +00:00
Craig Topper eb5cd61070 Const-correct the FixedLenDecoderEmitter. Pass a few things by const reference instead of value to avoid some copying. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152899 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-03-16 05:58:09 +00:00
Craig Topper d936045625 Spacing fixes. Mostly aligning arguments that spilled onto next line with the opening parenthese instead of 2 spaces in. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152889 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-03-16 01:19:24 +00:00
Craig Topper 797ba55e20 Remove unused field NumVariable from Filter class. Even it was needed the same result could be found with VariableInstructions.size(). Also fix some typos in comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152885 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-03-16 00:56:01 +00:00
Craig Topper c007ba86f3 Remove unused field from FixedLenDecoderEmitter. Move NumberedInstructions declaration from class to run method since its only used there and was being reinitialized anyway. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152616 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-03-13 06:39:00 +00:00
Jim Grosbach 9c826d2d3c Tidy up. 80 columns. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151764 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-02-29 22:07:56 +00:00
James Molloy 3015dfb7d7 Teach the MC and disassembler about SoftFail, and hook it up to UNPREDICTABLE on ARM. Wire this to tBLX in order to provide test coverage. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150169 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-02-09 10:56:31 +00:00
Craig Topper 655b8de7b2 Convert assert(0) to llvm_unreachable 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149814 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-02-05 07:21:30 +00:00
Owen Anderson 684dfcf724 Fix unused variable warning in the rare circumstance that we have no feature-dependent instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142193 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-17 16:56:47 +00:00
Peter Collingbourne 7c78888887 Move TableGen's parser and entry point into a library 
This is the first step towards splitting LLVM and Clang's tblgen executables.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140951 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-01 16:41:13 +00:00
Bob Wilson 1cea66c3ba Subtarget getFeatureBits() returns a uint64_t, not unsigned. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140928 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-01 02:47:54 +00:00
Eli Friedman 64a17b309d Make sure to handle the case where emitPredicateMatch returns false. Noticed by inspection. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139317 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-09-08 21:00:31 +00:00
James Molloy 0d76b19919 Fix warning on windows; use of comparison with bool argument. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139286 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-09-08 08:12:01 +00:00
Andrew Trick 22b4c819d4 Fix a use of freed string contents. 
Speculatively try to fix our windows testers with a patch I found on the internet.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139279 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-09-08 05:25:49 +00:00
Andrew Trick ed968a9a04 whitespace 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139278 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-09-08 05:23:14 +00:00
James Molloy a5d5856854 Second of a three-patch series aiming to fix MSR/MRS on Cortex-M. This adds predicate checking to the Disassembler. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139250 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-09-07 19:42:28 +00:00
Owen Anderson 83e3f67fb6 Allow the MCDisassembler to return a "soft fail" status code, indicating an instruction that is disassemblable, but invalid. Only used for ARM UNPREDICTABLE instructions at the moment. 
Patch by James Molloy.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137830 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-17 17:44:15 +00:00
Owen Anderson 438f68df35 Fix an oversight in the FixedLenDecoderEmitter where we weren't correctly checking the success result of custom decoder hooks on singleton decodings. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137171 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-09 23:05:23 +00:00
Owen Anderson cf6039548b Make the FixedLengthDecoderEmitter smart enough to autogenerate decoders for encodings like "let Inst{11-7} = foo;", where the RHS has no bitwidth specifiers. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136660 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-01 22:45:43 +00:00