Commit Graph

1321 Commits

Author SHA1 Message Date
Chris Lattner c8226f32e9 Simplify the side effect stuff a bit more and make licm/sinking
both work right according to the new flags.

This removes the TII::isReallySideEffectFree predicate, and adds
TII::isInvariantLoad. 

It removes NeverHasSideEffects+MayHaveSideEffects and adds
UnmodeledSideEffects as machine instr flags.  Now the clients
can decide everything they need.

I think isRematerializable can be implemented in terms of the
flags we have now, though I will let others tackle that.

llvm-svn: 45843
2008-01-10 23:08:24 +00:00
Chris Lattner 317332fc2a Start inferring side effect information more aggressively, and fix many bugs in the
x86 backend where instructions were not marked maystore/mayload, and perf issues where
instructions were not marked neverHasSideEffects.  It would be really nice if we could
write patterns for copy instructions.

I have audited all the x86 instructions down to MOVDQAmr.  The flags on others and on
other targets are probably not right in all cases, but no clients currently use this
info that are enabled by default.

llvm-svn: 45829
2008-01-10 07:59:24 +00:00
Chris Lattner 70ddafaf45 Fix a crash on code like: let x = 1 {x
llvm-svn: 45827
2008-01-10 07:01:53 +00:00
Chris Lattner 86c458a178 if an instr lacks a pattern, assume it has side effects (unless never has s-e is true).
llvm-svn: 45823
2008-01-10 05:40:54 +00:00
Chris Lattner 42c63ef96e start inferring 'no side effects'.
llvm-svn: 45822
2008-01-10 05:39:30 +00:00
Chris Lattner 9e69654461 Infer mayload
llvm-svn: 45819
2008-01-10 04:44:48 +00:00
Chris Lattner 1ca2068227 realize that instructions who match intrinsics that read memory read memory.
Also, instructions with any nodes that are SDNPMayLoad also read memory.

llvm-svn: 45817
2008-01-10 04:38:57 +00:00
Chris Lattner 07fde9bde1 add a mayLoad property for machine instructions, a correlary to mayStore.
This is currently not set by anything.

llvm-svn: 45748
2008-01-08 18:05:21 +00:00
Chris Lattner 03ad885039 rename TargetInstrDescriptor -> TargetInstrDesc.
Make MachineInstr::getDesc return a reference instead
of a pointer, since it can never be null.

llvm-svn: 45695
2008-01-07 07:27:27 +00:00
Chris Lattner e99a6caee4 Rename all the M_* flags to be namespace qualified enums, and switch
all clients over to using predicates instead of these flags directly.
These are now private values which are only to be used to statically
initialize the tables.

llvm-svn: 45692
2008-01-07 06:42:05 +00:00
Chris Lattner f376c99ea0 rename hasVariableOperands() -> isVariadic(). Add some comments.
Evan, please review the comments I added to getNumDefs to make sure
that they are accurate, thx.

llvm-svn: 45687
2008-01-07 05:19:29 +00:00
Chris Lattner fd548c96cc Move M_* flags down in the file. Move SchedClass up in the
TargetInstrDescriptor class and shrink to 16-bits, saving a 
word in TargetInstrDescriptor.  Add some comments.

llvm-svn: 45686
2008-01-07 05:06:49 +00:00
Chris Lattner 6f8713decb the name field of instructions is never set to a non-empty string,
just unconditionally use the def name of the instruction.

llvm-svn: 45684
2008-01-07 04:57:31 +00:00
Chris Lattner e55e115616 Add predicates methods to TargetOperandInfo, and switch all clients
over to using them, instead of diddling Flags directly.  Change the
various flags from const variables to enums.

llvm-svn: 45677
2008-01-07 02:39:19 +00:00
Chris Lattner a4ce4f6987 rename isLoad -> isSimpleLoad due to evan's desire to have such a predicate.
llvm-svn: 45667
2008-01-06 23:38:27 +00:00
Chris Lattner 10324d0175 rename isStore -> mayStore to more accurately reflect what it captures.
llvm-svn: 45656
2008-01-06 08:36:04 +00:00
Chris Lattner a348f55ec6 Change the 'isStore' inferrer to look for 'SDNPMayStore'
instead of "ISD::STORE".  This allows us to mark target-specific dag
nodes as storing (such as ppc byteswap stores).  This allows us to remove
more explicit isStore flags from the .td files.

Finally, add a warning for when a .td file contains an explicit 
isStore and tblgen is able to infer it.

llvm-svn: 45654
2008-01-06 06:44:58 +00:00
Chris Lattner 89c6566577 set the 'isstore' flag for instructions whose pattern is an
intrinsic that writes to memory.

llvm-svn: 45650
2008-01-06 05:36:50 +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 d5326def4a improve const correctness.
llvm-svn: 45646
2008-01-06 01:52:22 +00:00
Chris Lattner ea2d52d867 Split the impl of CodeGenInstruction out to its own .cpp file, add a getName() accessor.
llvm-svn: 45645
2008-01-06 01:35:39 +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 ab3242fd46 rename CodegenDAGPatterns -> CodeGenDAGPatterns
llvm-svn: 45641
2008-01-06 01:10:31 +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 78ac0747e7 fix build on case sensitive file systems.
llvm-svn: 45639
2008-01-05 23:37:52 +00:00
Chris Lattner 7980bba549 now that computing CodegenDAGPatterns doesn't implicitly print stuff
out, DAGISelEmitter can compute it in its ctor, which simplifies some code.

Now we can use CodegenDAGPatterns in other parts of tblgen that want access
to dag pattern info, woo!

llvm-svn: 45636
2008-01-05 22:58:54 +00:00
Chris Lattner cc43e79bcd move Node Transformation printing from CodeGenDAGPatterns -> DAGISelEmitter.
The only difference in output is that we now print them in alphabetical 
order instead of reverse alphabetical order.

llvm-svn: 45635
2008-01-05 22:54:53 +00:00
Chris Lattner e7170df043 move predicate printing code from CodeGenDAGPatterns -> DAGISelEmitter.
llvm-svn: 45634
2008-01-05 22:43:57 +00:00
Chris Lattner 9abe77b2d0 fix a fixme by improving const correctness.
llvm-svn: 45633
2008-01-05 22:30:17 +00:00
Chris Lattner 8cab021ca2 change getQualifiedName to be a global function.
Split the pattern parsing code out from the dag isel emitter into it's own file.

No functionality change.

llvm-svn: 45632
2008-01-05 22:25:12 +00:00
Chris Lattner 69ea01446e Change the builtin matcher to emit a decision tree, which should help out
the VC++ 'nesting depth' issue.

llvm-svn: 45567
2008-01-04 04:38:35 +00:00
Chris Lattner a47634ecb1 Don't let IntrinsicID be uninitialized if it doesn't match.
llvm-svn: 45563
2008-01-04 03:32:52 +00:00
Bill Wendling ddc77f8e4c Remove the default else. This was ending in code that looked like this:
if (!strcmp(Target, "x86")) {
  // ...
}
else
  IntrinsicID = Intrinsic::not_intrinsic;

llvm-svn: 45557
2008-01-03 23:02:16 +00:00
Chris Lattner 91678fc457 Fix a build problem with VC++ by not doing the target prefix
comparison for every builtin.  This reduces the depth of
the if/elseif chain dramatically.

llvm-svn: 45500
2008-01-02 21:24:22 +00:00
Chris Lattner dc3c9050f8 tblgen shouldn't include headers from llvm codegen.
llvm-svn: 45429
2007-12-30 00:25:23 +00:00
Chris Lattner 8adcd9f32e remove attributions from utils.
llvm-svn: 45419
2007-12-29 20:37:13 +00:00
Chris Lattner 8fa21acd25 remove attributions from tools/utils makefiles.
llvm-svn: 45414
2007-12-29 20:07:17 +00:00
Ted Kremenek 563b21b013 Added special support for stripping CRLF characters that may appear in the
output of nm.

llvm-svn: 45341
2007-12-24 08:04:39 +00:00
Bill Wendling b528a10e0a Modified to support comments better.
llvm-svn: 45192
2007-12-19 06:20:05 +00:00
Bill Wendling 7c0bea1ce9 Ignore shell scripts when doing "dsymutil" call.
llvm-svn: 45166
2007-12-18 19:21:52 +00:00
Christopher Lamb edf0788758 Change the PointerType api for creating pointer types. The old functionality of PointerType::get() has become PointerType::getUnqual(), which returns a pointer in the generic address space. The new prototype of PointerType::get() requires both a type and an address space.
llvm-svn: 45082
2007-12-17 01:12:55 +00:00
Bill Wendling cb77f04e1f Add flags to indicate that there are "never" side effects or that there "may be"
side effects for machine instructions.

llvm-svn: 45022
2007-12-14 01:48:59 +00:00
Evan Cheng 687567bca5 Oops. Forgot these.
llvm-svn: 44969
2007-12-13 00:42:35 +00:00
Bill Wendling 3f19dfe794 Reverting 44702. It wasn't correct to rename them.
llvm-svn: 44727
2007-12-08 23:58:46 +00:00
Duncan Sands 38ef3a8ec7 Rather than having special rules like "intrinsics cannot
throw exceptions", just mark intrinsics with the nounwind
attribute.  Likewise, mark intrinsics as readnone/readonly
and get rid of special aliasing logic (which didn't use
anything more than this anyway).

llvm-svn: 44544
2007-12-03 20:06:50 +00:00
Devang Patel c7d9af8d6d Change LinkTimeOptimizer.h install location.
llvm-svn: 44477
2007-12-01 00:24:50 +00:00
Devang Patel 0fceaea8be Change lib lto install location.
llvm-svn: 44476
2007-11-30 23:27:57 +00:00
Ted Kremenek 14d5f741ab Updated GenLibDeps.pl to employ "use strict" to help prevent uses of variables
that have not yet been defined.

Removed used of grep and sed when parsing the results of "nm". This was
originally motivated because if the user has specified options to grep using
the environment variable GREP_OPTIONS this could break the script. Piping
through grep/sed/sort/uniq is also (to my understanding) not necessary, and
the equivalent operations can be done much faster in the Perl script.

Using a crude benchmark, these changes resulted in a 3x speedup in the
execution of GenLibDeps.pl.

llvm-svn: 44372
2007-11-27 19:31:11 +00:00
Chuck Rose III 084b0eb3ca Add TGParser files to VStudio project files. Removed generated files section from TableGen project file as it is no longer needed. #Include <algorithm> directly from TGParser.cpp so it can see std::reverse.
llvm-svn: 44340
2007-11-26 23:19:59 +00:00
Chris Lattner 176d048901 add missing #include
llvm-svn: 44282
2007-11-22 23:19:05 +00:00
Chris Lattner 5241695dca resolve the last fixme's in the new tblgen parser.
llvm-svn: 44277
2007-11-22 21:06:59 +00:00
Chris Lattner 695506c046 change the Init print methods to return strings, and implement
print in terms of that.

llvm-svn: 44276
2007-11-22 21:05:25 +00:00
Chris Lattner 1b1e96b8d7 eliminate a bunch of print methods that are duplicate with the getAsString() method.
llvm-svn: 44275
2007-11-22 20:51:34 +00:00
Chris Lattner f4127dd48e Rewrite the tblgen parser in a recursive descent style, eliminating the bison parser.
This makes the parser much easier to understand, eliminates a ton of global variables,
and gives tblgen nice caret diagnostics.  It is also faster, but tblgen probably doesn't
care about performance.

There are a couple of FIXMEs which I will take care of next.

llvm-svn: 44274
2007-11-22 20:49:04 +00:00
Chuck Rose III 738fa17c4e Switching back to strtoll. Including config.h. On VStudio builds, this overrides strtoll.
llvm-svn: 44264
2007-11-21 19:36:25 +00:00
Chuck Rose III 07b57d2626 This change does a couple of things. First it gets the Visual Studio builds working.
I added the lexing files to the VStudio projects and removed the .l files from the 
VStudio projects.  There was a problem with use of strtoll in TGLexer.cpp and Chris
suggested switching to strtol, so that's included here.

Additionally, this checkin adds minimal x64 builds to the VStudio builds.  Build issues
related to x64 in the windows specific files for DynamicLibrary.inc and Singals.inc
are worked around, but not ultimately solved.  Binaries used to be stored in

...\win32\{Debug|Release}

but are now kept in

...\win32\bin\{win32|x64}\{Debug|Release}

intermediate files will continue to be stored in the individual project directories under 
win32.  

Some names will likely change in the future to reflect that the vstudio projects
are no longer 32-bit only, but I wanted to get things up and running today so kept away
from bigger restructuring.

llvm-svn: 44260
2007-11-21 00:37:56 +00:00
Chris Lattner 8b9ecdad0c Add the ability to convert a tblgen type to a string.
llvm-svn: 44257
2007-11-20 22:25:16 +00:00
Chris Lattner 4205d25f06 Record the start of the current token, for use in error reporting.
llvm-svn: 44227
2007-11-19 07:43:52 +00:00
Chris Lattner 1a26296453 Add carat diagnostics to tblgen lexer errors.
llvm-svn: 44226
2007-11-19 07:38:58 +00:00
Chris Lattner 6070028736 minor cleanups
llvm-svn: 44212
2007-11-18 05:48:46 +00:00
Chris Lattner 98c39513ab ensure header is self contained.
llvm-svn: 44211
2007-11-18 05:25:45 +00:00
Chris Lattner da4ab67127 reimplement the tblgen lexer with a simple hand-written lexer. This eliminates
one dependency on flex and gets rid of two ".cvs" files.

llvm-svn: 44210
2007-11-18 02:57:27 +00:00
Duncan Sands e2287ed552 Eliminate the recently introduced CCAssignToStackABISizeAlign
in favour of teaching CCAssignToStack that size 0 and/or align
0 means to use the ABI values.  This seems a neater solution.
It is safe since no legal value type has size 0.

llvm-svn: 44107
2007-11-14 08:29:13 +00:00
Dale Johannesen 7a7085f6d3 Add parameter to getDwarfRegNum to permit targets
to use different mappings for EH and debug info;
no functional change yet.
Fix warning in X86CodeEmitter.

llvm-svn: 44056
2007-11-13 19:13:01 +00:00
Bill Wendling c8f2f68e87 Move SYSCTL stuff close to where it's used.
llvm-svn: 44031
2007-11-12 23:55:19 +00:00
Devang Patel f48ae28600 Build universal llvm.
llvm-svn: 44030
2007-11-12 23:53:43 +00:00
Owen Anderson 933b5b7e62 Add a flag for indirect branch instructions.
Target maintainers: please check that the instructions for your target are correctly marked.

llvm-svn: 44012
2007-11-12 07:39:39 +00:00
Owen Anderson 55f4e5d2dd Fix on 64-bit machines.
llvm-svn: 44001
2007-11-12 00:56:04 +00:00
Anton Korobeynikov 4edfea438a Use TableGen to emit information for dwarf register numbers.
This makes DwarfRegNum to accept list of numbers instead.
Added three different "flavours", but only slightly tested on x86-32/linux.
Please check another subtargets if possible,

llvm-svn: 43997
2007-11-11 19:50:10 +00:00
Anton Korobeynikov a468a11d80 Add convenient helper to obtain list of ints
llvm-svn: 43993
2007-11-11 11:19:37 +00:00
Dale Johannesen b988e7e8cd Add CCAssignToStackABISizeAlign for convenience in
dealing with types whose size & alignment are
different on different subtargets.  Use it for x86 f80.

llvm-svn: 43988
2007-11-10 22:07:15 +00:00
Evan Cheng 9e0216deab Added -test-opts to specify test options.
llvm-svn: 43971
2007-11-10 01:33:27 +00:00
Bill Wendling 71df1dd59e Initial commit of files that support building LLVM the "Apple" way.
llvm-svn: 43929
2007-11-09 06:59:33 +00:00
Dale Johannesen fbe69d2cd6 Interchange Dwarf numbers of ESP and EBP on x86 Darwin.
Much improvement in exception handling.

llvm-svn: 43794
2007-11-07 00:25:05 +00:00
Neil Booth 758d0fd736 Remove some unnecessary C-style statics.
Restore an assertion that arithmetic can be performed on this format.

llvm-svn: 43638
2007-11-02 15:10:05 +00:00
Chris Lattner 0083d8f38d switch some calls to SelectionDAG::getTargetNode to use
the one that takes an operand list instead of explicit
operands.  There is one left though, the more interesting
one :)

llvm-svn: 43290
2007-10-24 06:25:09 +00:00
Anton Korobeynikov f93fa13de7 Update this file for 2.0 syntax. Contributed by Jan Rehders
llvm-svn: 43182
2007-10-19 16:54:13 +00:00
Chris Lattner 604b2314c8 tblgen uses dynamic_cast heavily, so it needs rtti info
llvm-svn: 43126
2007-10-18 15:54:45 +00:00
Gordon Henriksen 0ab3d27641 Reverting unnecessary commit of generated files.
llvm-svn: 43095
2007-10-17 21:36:08 +00:00
Gordon Henriksen ef5d08f4ea Switching TargetMachineRegistry to use the new generic Registry.
llvm-svn: 43094
2007-10-17 21:28:48 +00:00
Hartmut Kaiser ec8a8d1f51 Updated VC++ build system.
Silenced some VC warnings.

I'm getting linker errors, though: unresolved externals:

llvm::Split<class llvm::BasicBlock *,struct llvm::GraphTraits<class llvm::BasicBlock *> >(class llvm::DominatorTreeBase<class llvm::BasicBlock> &,class llvm::BasicBlock *)

and

llvm::Split<struct llvm::Inverse<class llvm::BasicBlock *>,struct llvm::GraphTraits<struct llvm::Inverse<class llvm::BasicBlock *> > >(class llvm::DominatorTreeBase<class llvm::BasicBlock> &,class llvm::BasicBlock *)

Where are these defined?

llvm-svn: 43073
2007-10-17 14:56:40 +00:00
Chris Lattner 3cfb56d489 One mundane change: Change ReplaceAllUsesOfValueWith to *optionally*
take a deleted nodes vector, instead of requiring it.

One more significant change:  Implement the start of a legalizer that
just works on types.  This legalizer is designed to run before the 
operation legalizer and ensure just that the input dag is transformed
into an output dag whose operand and result types are all legal, even
if the operations on those types are not.

This design/impl has the following advantages:

1. When finished, this will *significantly* reduce the amount of code in
   LegalizeDAG.cpp.  It will remove all the code related to promotion and
   expansion as well as splitting and scalarizing vectors.
2. The new code is very simple, idiomatic, and modular: unlike 
   LegalizeDAG.cpp, it has no 3000 line long functions. :)
3. The implementation is completely iterative instead of recursive, good
   for hacking on large dags without blowing out your stack.
4. The implementation updates nodes in place when possible instead of 
   deallocating and reallocating the entire graph that points to some 
   mutated node.
5. The code nicely separates out handling of operations with invalid 
   results from operations with invalid operands, making some cases
   simpler and easier to understand.
6. The new -debug-only=legalize-types option is very very handy :), 
   allowing you to easily understand what legalize types is doing.

This is not yet done.  Until the ifdef added to SelectionDAGISel.cpp is
enabled, this does nothing.  However, this code is sufficient to legalize
all of the code in 186.crafty, olden and freebench on an x86 machine.  The
biggest issues are:

1. Vectors aren't implemented at all yet
2. SoftFP is a mess, I need to talk to Evan about it.
3. No lowering to libcalls is implemented yet.
4. Various operations are missing etc.
5. There are FIXME's for stuff I hax0r'd out, like softfp.

Hey, at least it is a step in the right direction :).  If you'd like to help,
just enable the #ifdef in SelectionDAGISel.cpp and compile code with it.  If
this explodes it will tell you what needs to be implemented.  Help is 
certainly appreciated.

Once this goes in, we can do three things:

1. Add a new pass of dag combine between the "type legalizer" and "operation
   legalizer" passes.  This will let us catch some long-standing isel issues
   that we miss because operation legalization often obfuscates the dag with
   target-specific nodes.
2. We can rip out all of the type legalization code from LegalizeDAG.cpp,
   making it much smaller and simpler.  When that happens we can then 
   reimplement the core functionality left in it in a much more efficient and
   non-recursive way.
3. Once the whole legalizer is non-recursive, we can implement whole-function
   selectiondags maybe...

llvm-svn: 42981
2007-10-15 06:10:22 +00:00
Evan Cheng 2e3d609da6 Fix typos.
llvm-svn: 42896
2007-10-12 08:39:02 +00:00
Tanya Lattner cf316c2eb7 If the user did not check out LLVM and request it to be built, it should be a build error. This relies on the user having a successful build of LLVM, but the tests will fail if they dont.
llvm-svn: 42514
2007-10-02 00:19:27 +00:00
Dale Johannesen 25a00a63eb Add sqrt and powi intrinsics for long double.
llvm-svn: 42423
2007-09-28 01:08:20 +00:00
Evan Cheng 43686dad3d Rename keyword "modify" -> "implicit".
llvm-svn: 42282
2007-09-25 01:48:59 +00:00
Evan Cheng f73fb6261b Add CopyCost to TargetRegisterClass. This specifies the cost of copying a value
between two registers in the specific class.

llvm-svn: 42123
2007-09-19 01:35:01 +00:00
Evan Cheng ffd6995cc7 Bug fix and minor clean up of generated code.
llvm-svn: 42069
2007-09-17 22:26:41 +00:00
Chris Lattner 1406f7143b regenerate
llvm-svn: 42036
2007-09-17 17:40:48 +00:00
Dan Gohman 58c468fb09 Remove spurious consts. This fixes warnings with compilers that
are strict about such things.

llvm-svn: 41956
2007-09-14 20:08:19 +00:00
Evan Cheng 59c39dc197 Initial support for multi-result patterns:
1.
[(set GR32:$dst, (add GR32:$src1, GR32:$src2)),
 (modify EFLAGS)]
This indicates the source pattern expects the instruction would produce 2 values. The first is the result of the addition. The second is an implicit definition in register EFLAGS.
2.
def : Pat<(parallel (addc GR32:$src1, GR32:$src2), (modify EFLAGS)), ()>
Similar to #1 except this is used for def : Pat patterns.

llvm-svn: 41897
2007-09-12 23:30:14 +00:00
Evan Cheng c7852a689a Allow set operators with multiple destinations, i.e. (set x, y, (op a, b)).
llvm-svn: 41861
2007-09-11 19:52:18 +00:00
Chris Lattner 9190ffe62e update this to use llvm-config, patch by Jose M. Moya
llvm-svn: 41849
2007-09-11 17:09:54 +00:00
Evan Cheng cef2c0efcc TableGen no longer emit CopyFromReg nodes for implicit results in physical
registers. The scheduler is now responsible for emitting them.

llvm-svn: 41781
2007-09-07 23:59:02 +00:00
Evan Cheng 20711a8b9a Always check the type of node. This prevents situations such as selecting 32-bit rotate target instruction for a 64-bit node when 64-bit pattern is missing.
llvm-svn: 41710
2007-09-04 20:18:28 +00:00
Dan Gohman febf946ea7 Add MVT::fAny for overloading intrinsics on floating-point types.
llvm-svn: 41128
2007-08-16 21:57:19 +00:00
Reid Spencer ab13178928 Make use of the llvm-ld tool's new ability to read input from stdin to extract
the list of link time passes to be run, just as for opt, with the
-debug-pass=Arguments option.

llvm-svn: 41040
2007-08-13 06:19:51 +00:00