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b56bc61cf4
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857 Commits

Author SHA1 Message Date
Bill Wendling
b56bc61cf4 Add a flag to indicate that an instruction is as cheap (or cheaper) than a move 
instruction to execute. This can be used for transformations (like two-address
conversion) to remat an instruction instead of generating a "move"
instruction. The idea is to decrease the live ranges and register pressure and
all that jazz.

llvm-svn: 51660
 2008-05-28 22:54:52 +00:00
Roman Levenstein
7e3ffb268e Do not generate by TableGen the hard-coded standard, target-independent part of 
DAG instruction selectors. Introudce a dedicated header file for this part:
include/llvm/CodeGen/DAGISelHeader.h

TableGen now only generates the include preprocessor directive to include this
new header.

This is a preparation for supporting multiple implementations of instruction
selectors in the future.

Reviewed and approved by Evan and Dan.

llvm-svn: 51102
 2008-05-14 10:17:11 +00:00
Mikhail Glushenkov
18508c5df4 Filter option names to escape symbols not allowed as C++ identifiers. 
Makes it possible to use options with names like "Wa,".
Also fixes the -Wall option handling as a side-effect.

llvm-svn: 50973
 2008-05-12 16:33:06 +00:00
Mikhail Glushenkov
ac930296dd Reapply 50867: A small refactoring (extract method) + some comment fixes. 
Fixed the build breakage, sorry for that.

llvm-svn: 50895
 2008-05-09 08:27:26 +00:00
Tanya Lattner
56baa19bfb Revertin 50867 since it was breaking the build. 
llvm-svn: 50871
 2008-05-08 21:54:20 +00:00
Mikhail Glushenkov
49359aa3b3 A small refactoring (extract method) + some comment fixes. 
llvm-svn: 50867
 2008-05-08 20:02:03 +00:00
Mikhail Glushenkov
7e401e5002 Use Doxygen-style comments. 
llvm-svn: 50833
 2008-05-07 21:50:19 +00:00
Mikhail Glushenkov
b2547a6c28 Change from llvm::SmallSet<std::string> to llvm::StringMap<char>. 
llvm-svn: 50766
 2008-05-06 18:18:58 +00:00
Mikhail Glushenkov
24d085fee4 Add new edge property combinator: weight. 
llvm-svn: 50765
 2008-05-06 18:18:20 +00:00
Mikhail Glushenkov
3534026221 Use edge weights to choose the right linker based on input language names. 
llvm-svn: 50759
 2008-05-06 18:15:12 +00:00
Mikhail Glushenkov
7ea1b7e206 Add weights to graph edges. Choose between edges based on their weight. 
llvm-svn: 50757
 2008-05-06 18:14:24 +00:00
Mikhail Glushenkov
e2005cb90d Remove the UnpackValues() function. 
llvm-svn: 50756
 2008-05-06 18:13:45 +00:00
Mikhail Glushenkov
78aa308f84 Add a --linker command-line option, make all tests pass. 
llvm-svn: 50755
 2008-05-06 18:13:00 +00:00
Mikhail Glushenkov
89e32fbe59 Naming fix: LLVMCCConfigurationEmitter -> LLVMCConfigurationEmitter. 
llvm-svn: 50754
 2008-05-06 18:12:03 +00:00
Mikhail Glushenkov
c586c41085 Rename LLVMCCConfigurationEmitter to LLVMCConfigurationEmitter 
llvm-svn: 50748
 2008-05-06 18:09:29 +00:00
Mikhail Glushenkov
b70916c93f Add output redirection, rename namespace llvmcc to namespace llvmc. 
llvm-svn: 50746
 2008-05-06 18:08:59 +00:00
Mikhail Glushenkov
839e3445a1 Small output formatting fix. 
llvm-svn: 50739
 2008-05-06 17:27:15 +00:00
Mikhail Glushenkov
68908552ae Add inward edge counters to Nodes; Associate JoinLists with JoinTools. 
llvm-svn: 50738
 2008-05-06 17:26:53 +00:00
Mikhail Glushenkov
c00f149f81 Return const char* instead of std::string in Tool classes 
llvm-svn: 50733
 2008-05-06 17:24:26 +00:00
Mikhail Glushenkov
3895684d84 Refactoring: extract method. 
llvm-svn: 50731
 2008-05-06 17:23:14 +00:00
Mikhail Glushenkov
2ad807d5fe Add new edge properties: parameter_equals, element_in_list, and. 
llvm-svn: 50730
 2008-05-06 17:22:47 +00:00
Mikhail Glushenkov
00b7a3bfb5 Implemented switch_on edge property. 
llvm-svn: 50729
 2008-05-06 17:22:03 +00:00
Mikhail Glushenkov
689a173ed2 More work on edge properties. Use Edge classes instead of strings in CompilationGraph. 
llvm-svn: 50726
 2008-05-06 16:36:50 +00:00
Mikhail Glushenkov
10283528ca Ongoing work: add an edge typechecker, rudimentary support for edge properties. 
llvm-svn: 50725
 2008-05-06 16:36:06 +00:00
Mikhail Glushenkov
72590c9cc7 Convert internal representation to use DAG. This gives us more flexibility and enables future improvements. 
llvm-svn: 50724
 2008-05-06 16:35:25 +00:00
Mikhail Glushenkov
de53f4ce11 Code reorg 
llvm-svn: 50722
 2008-05-06 16:34:12 +00:00
Chuck Rose III
fbfb612c4e VisualStudio project files updated. #include <algorithm> added to make VisualStudio happy. Also had to undefine setjmp because of #include <csetjmp> turning setjmp into _setjmp in VisualStudio. 
llvm-svn: 49743
 2008-04-15 21:27:11 +00:00
Evan Cheng
cff9295e43 Sort sub-registers and super-registers lists according to super-sub register relations. e.g. X86::RAX sub-register list is EAX, AX, AL, AH (order of last two are not guaranteed). 
llvm-svn: 49714
 2008-04-15 07:56:03 +00:00
Chris Lattner
da0c256cab produce an error on invalid input instead of asserting: 
def : Pat<((v2f64 (vector_shuffle immAllZerosV_bc,
           ^

llvm-svn: 49462
 2008-04-10 04:48:34 +00:00
Nate Begeman
41d0309ce8 Fix a bug where an incorrect bit mask would be generated if a target's last asm 
string began at a power of 2 in the string index.  For example, if "ret" started
at position 16, the ret instruction would be assigned code 16, but the mask would be AsmChars[] + Code & 15, not Code & 31.

llvm-svn: 49433
 2008-04-09 16:24:11 +00:00
Chris Lattner
a8d3c512dd Fix generation of multi-stage instruction itineraries. Patch by 
giuma.cordes@gmail.com

llvm-svn: 49276
 2008-04-06 17:38:14 +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
Anton Korobeynikov
d3330dfbf6 Add new CC lowering rule: provide a list of registers, which can be 'shadowed', 
when some another register is used for argument passing.
Currently is used on Win64.

llvm-svn: 49079
 2008-04-02 05:23:57 +00:00
Chris Lattner
d141d16ed7 Change the MemoryBuffer::getFile* methods to take just a pointer to the 
start of a filename, not a filename+length.  All clients can produce a
null terminated name, and the system api's require null terminated 
strings anyway.

llvm-svn: 49041
 2008-04-01 18:04:03 +00:00
Mikhail Glushenkov
f3c45cf9d1 Fix build breakage on Windows with GCC 4.3. References bug #2176. 
llvm-svn: 48874
 2008-03-27 09:53:47 +00:00
Dan Gohman
2b96ce84aa Add explicit keywords. 
llvm-svn: 48801
 2008-03-25 22:06:05 +00:00
Dan Gohman
22002efa15 A quick nm audit turned up several fixed tables and objects that were 
marked read-write. Use const so that they can be allocated in a
read-only segment.

llvm-svn: 48800
 2008-03-25 21:45:14 +00:00
Anton Korobeynikov
261bddcbeb Add first proof-of-concept universal compiler driver framework based 
on ideas mentioned in PR686.
Written by Mikhail Glushenkov and contributed by Codedgers, Inc.

Old llvmc will be removed soon after new one will have all its properties.

llvm-svn: 48699
 2008-03-23 08:57:20 +00:00
Duncan Sands
4153fc30c9 Introduce a new node for holding call argument 
flags.  This is needed by the new legalize types
infrastructure which wants to expand the 64 bit
constants previously used to hold the flags on
32 bit machines.  There are two functional changes:
(1) in LowerArguments, if a parameter has the zext
attribute set then that is marked in the flags;
before it was being ignored; (2) PPC had some bogus
code for handling two word arguments when using the
ELF 32 ABI, which was hard to convert because of
the bogusness.  As suggested by the original author
(Nicolas Geoffray), I've disabled it for the moment.
Tested with "make check" and the Ada ACATS testsuite.

llvm-svn: 48640
 2008-03-21 09:14:45 +00:00
Chris Lattner
6c4486c5c7 detabify llvm, patch by Mike Stump! 
llvm-svn: 48577
 2008-03-20 01:22:40 +00:00
Nate Begeman
d782b76546 Add support for escaping {} in asm strings, based on patch from Nick Burns. 
llvm-svn: 48450
 2008-03-17 07:26:14 +00:00
Christopher Lamb
b4f4b41048 Make insert_subreg a two-address instruction, vastly simplifying LowerSubregs pass. Add a new TII, subreg_to_reg, which is like insert_subreg except that it takes an immediate implicit value to insert into rather than a register. 
llvm-svn: 48412
 2008-03-16 03:12:01 +00:00
Evan Cheng
9af68f56c5 Remove isImplicitDef TargetInstrDesc flag. 
llvm-svn: 48381
 2008-03-15 00:19:36 +00:00
Evan Cheng
11d2c09adc Replace all target specific implicit def instructions with a target independent one: TargetInstrInfo::IMPLICIT_DEF. 
llvm-svn: 48380
 2008-03-15 00:03:38 +00:00
Christopher Lamb
0f1c32eb63 Get rid of a pseudo instruction and replace it with subreg based operation on real instructions, ridding the asm printers of the hack used to do this previously. In the process, update LowerSubregs to be careful about eliminating copies that have side affects. 
Note: the coalescer will have to be careful about this too, when it starts coalescing insert_subreg nodes.
llvm-svn: 48329
 2008-03-13 05:47:01 +00:00
Christopher Lamb
97376d2df6 Recommitting changes after more testing. These appear to cause no problems. 
llvm-svn: 48222
 2008-03-11 09:33:47 +00:00
Chris Lattner
edd8cdcddb emit an ID # for each regclass ID. Chris doesn't like to have to count. 
llvm-svn: 48200
 2008-03-11 00:00:23 +00:00
Evan Cheng
067ecbc341 Revert 48125, 48126, and 48130 for now to unbreak some x86-64 tests. 
llvm-svn: 48167
 2008-03-10 19:31:26 +00:00
Christopher Lamb
c1e184122a Revert accidentally committed local changes. 
llvm-svn: 48126
 2008-03-10 04:16:09 +00:00
Christopher Lamb
3d7bb6ec01 Add support in TableGen for unknown operands that infer their type from the pattern their used in. This will be used to allow insert/extract subreg patterns in .td files! 
llvm-svn: 48125
 2008-03-10 04:13:41 +00:00