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1271 Commits

Author SHA1 Message Date
Chris Lattner
bfffa4f21e 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
9d7971791b 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
64104d9b2f Fix a crash on code like: let x = 1 {x 
llvm-svn: 45827
 2008-01-10 07:01:53 +00:00
Chris Lattner
e3584964b8 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
6a41e14ee2 start inferring 'no side effects'. 
llvm-svn: 45822
 2008-01-10 05:39:30 +00:00
Chris Lattner
bd352f9008 Infer mayload 
llvm-svn: 45819
 2008-01-10 04:44:48 +00:00
Chris Lattner
c656c40445 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
9b7b3ade8f 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
f83aae613c 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
57e851edfe 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
9b987de2c5 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
b0e50db817 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
26171363b9 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
93e1e6ee12 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
14310afe42 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
5489888580 rename isStore -> mayStore to more accurately reflect what it captures. 
llvm-svn: 45656
 2008-01-06 08:36:04 +00:00
Chris Lattner
8b4b75c771 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
01d46ed7cc 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
ed75a9c636 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
51500436de 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
7414f541ca improve const correctness. 
llvm-svn: 45646
 2008-01-06 01:52:22 +00:00
Chris Lattner
e9f0c9b6f9 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
e0f76407f9 final cleanups. 
llvm-svn: 45644
 2008-01-06 01:21:51 +00:00
Chris Lattner
4eecc7c085 further simplifications and cleanup 
llvm-svn: 45643
 2008-01-06 01:20:13 +00:00
Chris Lattner
1d89a5f45d simplify some code 
llvm-svn: 45642
 2008-01-06 01:12:44 +00:00
Chris Lattner
1a15091e2d rename CodegenDAGPatterns -> CodeGenDAGPatterns 
llvm-svn: 45641
 2008-01-06 01:10:31 +00:00
Chris Lattner
5675305d1a 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
95fa0c3c8d fix build on case sensitive file systems. 
llvm-svn: 45639
 2008-01-05 23:37:52 +00:00
Chris Lattner
e61657979a 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
521466d0d1 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
2fb8b5aaf9 move predicate printing code from CodeGenDAGPatterns -> DAGISelEmitter. 
llvm-svn: 45634
 2008-01-05 22:43:57 +00:00
Chris Lattner
a66efc2de9 fix a fixme by improving const correctness. 
llvm-svn: 45633
 2008-01-05 22:30:17 +00:00
Chris Lattner
3cd393b5ab 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
e71d6a90f1 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
17760c87aa Don't let IntrinsicID be uninitialized if it doesn't match. 
llvm-svn: 45563
 2008-01-04 03:32:52 +00:00
Bill Wendling
26e9579653 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
ddf03e12a2 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
6460f1a60a tblgen shouldn't include headers from llvm codegen. 
llvm-svn: 45429
 2007-12-30 00:25:23 +00:00
Chris Lattner
c4006845a6 remove attributions from utils. 
llvm-svn: 45419
 2007-12-29 20:37:13 +00:00
Chris Lattner
11718ad357 remove attributions from tools/utils makefiles. 
llvm-svn: 45414
 2007-12-29 20:07:17 +00:00
Ted Kremenek
3ba98109c9 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
a0b8b2ade7 Modified to support comments better. 
llvm-svn: 45192
 2007-12-19 06:20:05 +00:00
Bill Wendling
06cd90a12f Ignore shell scripts when doing "dsymutil" call. 
llvm-svn: 45166
 2007-12-18 19:21:52 +00:00
Christopher Lamb
a608afb52e 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
c8c611e88f 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
c314c2daf1 Oops. Forgot these. 
llvm-svn: 44969
 2007-12-13 00:42:35 +00:00
Bill Wendling
8d8d9a2f5e Reverting 44702. It wasn't correct to rename them. 
llvm-svn: 44727
 2007-12-08 23:58:46 +00:00
Duncan Sands
1e2e4972ff 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
78267aca13 Change LinkTimeOptimizer.h install location. 
llvm-svn: 44477
 2007-12-01 00:24:50 +00:00
Devang Patel
cf59cd82d5 Change lib lto install location. 
llvm-svn: 44476
 2007-11-30 23:27:57 +00:00