Commit Graph

1714 Commits

Author SHA1 Message Date
Chris Lattner
22c48b384c split the movechild/record/moveparent -> recordchild optzn into a
movechild/record -> recordchild/movechild and 
movechild/moveparent -> noop xforms.  This slightly shrinks the tables
(x86 to 117454) and enables adding future improvements.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97051 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-24 19:52:48 +00:00
Chris Lattner
09b9f3928e emit a histogram of the opcodes in comments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97047 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-24 19:17:12 +00:00
Chris Lattner
a86509d436 lets not break the old isel.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97034 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-24 07:41:11 +00:00
Chris Lattner
c84edb7bdd Since the new instruction selector now works, I don't need to keep
the old one around for comparative purposes: have the
ENABLE_NEW_ISEL #define (which is not enabled on mainline) stop
emitting the old isel at all, yay for build time win.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97033 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-24 07:35:09 +00:00
Chris Lattner
19b5a7590b implement a simple proof-of-concept optimization for
the new isel: fold movechild+record+moveparent into a
single recordchild N node.  This shrinks the X86 table
from 125443 to 117502 bytes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97031 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-24 07:31:45 +00:00
Chris Lattner
91c6a822ba The new isel passes all tests, time to start making it go fast.
Also add an easy macro at the top of DAGISelEmitter.cpp to enable
it.  Lets see if I can avoid accidentally turning it on :)



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97029 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-24 07:06:50 +00:00
Chris Lattner
02f73585f7 The new isel was not properly handling patterns that covered
internal nodes with flag results.  Record these with a new 
OPC_MarkFlagResults opcode and use this to update the interior
nodes' flag results properly.  This fixes CodeGen/X86/i256-add.ll
with the new isel.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97021 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-24 05:33:42 +00:00
Sean Callanan
80443f9146 Changed the table generator so that the X86
disassembler never recognizes InitReg instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97017 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-24 02:56:25 +00:00
Mikhail Glushenkov
c43012960a Trailing whitespace.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96923 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-23 09:05:01 +00:00
Mikhail Glushenkov
1afba8e474 Implement order-preserving option forwarding.
Needed to correctly handle things like 'llvmc -framework Foo foo.o -framework
Bar bar.o' - before this commit all '-framework' options would've been grouped
together in the beginning.

Due to our dependence on CommandLine this turned out to be a giant hack; we will
migrate away from CommandLine eventually.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96922 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-23 09:04:57 +00:00
Mikhail Glushenkov
a34f97ab22 Correct option forwarding: initial implementation.
Does not work, but the infrastructure changes are in place.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96920 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-23 09:04:44 +00:00
Mikhail Glushenkov
be6ee7c116 New experimental/undocumented feature: 'works_on_empty'.
For now, just enough support to make -filelist work.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96918 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-23 09:04:28 +00:00
Mikhail Glushenkov
a04d4ed690 Add a way to enable '-opt=foo' forwarding.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96916 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-23 09:04:13 +00:00
Chris Lattner
ba1cff4450 add some #if 0'd out code for checking that named values in
input/output patterns have the same type.  It turns out that 
this triggers all the time because we don't infer types 
between these boundaries.  Until we do, don't turn this on.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96905 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-23 07:50:58 +00:00
Chris Lattner
a27234e290 Reject patterns that use a name multiple times in the src or result
of a pattern and where the uses have different types.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96904 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-23 07:22:28 +00:00
Chris Lattner
4ac7a0ca8f reject patterns that have dead named arguments in the input pattern
this is tidier and can find bugs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96900 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-23 06:55:24 +00:00
Chris Lattner
967d54ae04 reject patterns that mention a name in the destination pattern
but not in the input.  Previously, this would trigger an abort
late in the isel logic.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96898 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-23 06:35:45 +00:00
Chris Lattner
25b6f91c54 merge some code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96896 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-23 06:16:51 +00:00
Chris Lattner
53d09bd009 more tidying up
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96891 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-23 05:59:10 +00:00
Chris Lattner
6eb3012b45 reduce indentation by eliminating 'else after return'
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96889 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-23 05:51:07 +00:00
Chris Lattner
860d4a787f really fix an off-by-one error
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96845 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-23 01:07:39 +00:00
Chris Lattner
5007e1e435 switch the value# in OPC_CompleteMatch and OPC_EmitNode to use a
VBR encoding for the insanity being perpetrated by the spu backend. 


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96843 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-23 00:59:59 +00:00
Chris Lattner
3e22f2d489 add a new Push2 opcode for targets (like cellspu) which have
ridiculously ginormous patterns and need more than one byte
of displacement for encodings.  This fixes CellSPU/fdiv.ll.
SPU is still doing something else ridiculous though.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96833 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-22 23:55:39 +00:00
Chris Lattner
20df2420f7 Change ComplexPattern handling to push the node being matched as
well as the operands produced when the pattern is matched.  This
allows CheckSame to work correctly when matching replicated 
names involving ComplexPatterns.  This fixes a bunch of MSP430 
failures, we're down to 13 failures, two of which are
due to a sched bug.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96824 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-22 23:33:44 +00:00
Chris Lattner
12a667c1e8 add a new CheckMultiOpcode opcode for checking that a node
has one of the list of acceptable opcodes for a complex 
pattern.  This fixes 4 regtest failures.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96814 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-22 22:30:37 +00:00
Chris Lattner
1f2ed5fe7e When matching patterns that have a complex pattern as their root, make
sure to only run the complex pattern on nodes where the target opts in.
This patch only handles targets with one opcode specified so far, but
fixes 16 failures, only 34 left.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96813 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-22 22:18:05 +00:00
Chris Lattner
565a6f9480 fix most of the failures in the x86 suite by handling multiple
result nodes correctly.  Note that this includes a horrible hack
in DAGISelHeader which cannot be fixed reasonably without 
eliminating (parallel) from input patterns.  That, in turn,
can't be done until we support writing multiple result patterns
for the X86and_flag and related multiple-result nodes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96767 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-21 23:54:05 +00:00
Chris Lattner
664012bb64 Always emit register class id references as i32 like
DAGISelEmitter does.  This fixes 11 arm failures (8 
left).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96757 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-21 20:53:45 +00:00
Chris Lattner
99ce6e8aff Sort the patterns before adding them to the FA so that we get the
least cost matches.  This gets us from 195 -> 208 passes on the ppc codegen tests.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96747 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-21 19:22:06 +00:00
Chris Lattner
8fbad244bd emit table indexes before each row so that it is debuggable.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96730 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-21 07:16:41 +00:00
Chris Lattner
bef2a515f6 fix a table size miscomputation, target opcodes are 2 bytes.
With this, the matcher actually works reasonably well, but
crashes on larger examples in the scheduler.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96727 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-21 06:44:29 +00:00
Chris Lattner
984e18823e emit to the right streams, to avoid emitting the push
body before the push.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96726 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-21 06:30:04 +00:00
Chris Lattner
0ab1c5f8f8 oops don't turn this on for everyone yet.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96725 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-21 06:03:56 +00:00
Chris Lattner
77f2e2724d implement the last known missing feature: updating uses of results
of the matched pattern to use the newly created node results.  Onto
the "making it actually work" phase!



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96724 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-21 06:03:07 +00:00
Chris Lattner
8e946bea14 Lots of improvements to the new dagisel emitter. This gets it to
the point where it is to the 95% feature complete mark, it just
needs result updating to be done (then testing, optimization 
etc).

More specificallly, this adds support for chain and flag handling
on the result nodes, support for sdnodexforms, support for variadic
nodes, memrefs, pinned physreg inputs, and probably lots of other
stuff.

In the old DAGISelEmitter, this deletes the dead code related to
OperatorMap, cleans up a variety of dead stuff handling "implicit
remapping" from things like globaladdr -> targetglobaladdr (which
is no longer used because globaladdr always needs to be legalized),
and some minor formatting fixes.




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96716 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-21 03:22:59 +00:00
Chris Lattner
906b4995ee add emitter support for integer constants and simple physreg references.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96663 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-19 07:49:56 +00:00
Chris Lattner
01a5bee716 fix this to work more determinstically, patch by Thomas Veith!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96661 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-19 07:02:20 +00:00
Chris Lattner
853b919d93 I confused myself, temporaries will be recorded right along with other inputs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96639 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-19 00:33:13 +00:00
Chris Lattner
c94fa4c759 introduce a new ResultVal and start keeping track of temporary values.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96636 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-19 00:27:40 +00:00
Chris Lattner
845c042734 add support for referencing registers and immediates,
building the tree to represent them but not emitting 
table entries for them yet.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96617 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-18 22:03:03 +00:00
Chris Lattner
b49985a849 start sketching out the structure of code for result emission generation.
Nothing real here yet.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96575 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-18 06:47:49 +00:00
Chris Lattner
bd8227f529 rename the child field to 'next'. This is not a parent/child
relationship, this is a linear list relationship.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96561 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-18 02:53:41 +00:00
Chris Lattner
8ef9c7958a eliminate the MatcherNodeWithChild class, give the 'child'
field to MatcherNode.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96560 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-18 02:49:24 +00:00
Chris Lattner
dcdcef2cb3 fit in 80 cols
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96541 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-18 00:23:27 +00:00
Chris Lattner
03ddb20bfd redisable this to save people a small amount of build time.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96497 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-17 19:19:50 +00:00
Chris Lattner
0a3f39985b move isOnlyReachableByFallthrough out of MachineBasicBlock into AsmPrinter,
and add a sparc implementation that knows about delay slots.  Patch by
Nathan Keynes!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96492 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-17 18:52:56 +00:00
Chris Lattner
84aa60b522 reduce nesting.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96466 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-17 06:53:36 +00:00
Chris Lattner
781f359c1a improve comments, the matcher is now feature complete, on to codegen.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96464 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-17 06:47:35 +00:00
Chris Lattner
409ac586e8 sink special case "cannotyetselect" for intrinsics out of the
tblgen splatted code into the implementation.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96460 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-17 06:28:22 +00:00
Chris Lattner
9a747f1305 Emulate the current isel's "IsChainCompatible" logic for now.
I'd like to eventually rip it out, but for now producing the
same selections as the old matcher is more important.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96458 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-17 06:23:39 +00:00
Chris Lattner
8dc4f2bb60 properly record chain inputs to complex patterns,
resolving a fixme.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96457 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-17 06:08:25 +00:00
Chris Lattner
d9c1a344a0 simplify IsChainCompatible codegen, add comments. no
functionality change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96453 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-17 05:35:28 +00:00
Chris Lattner
785d16fe75 Prep work to handle input chains of matched patterns and checking for
'ischaincompatible' when a pattern has more than one input chain.  Need
to do some commenting and cleanup now that I understand how this works.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96443 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-17 02:16:19 +00:00
Chris Lattner
2f7ecdeb1d record input chains.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96437 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-17 01:34:15 +00:00
Chris Lattner
c642b84fb8 prefix captured value names with $ so they look like
variables.  Use the fancy OpNo variable instead of i,
which has the right index including chains.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96436 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-17 01:27:29 +00:00
Chris Lattner
c96087b343 improve comments on OPC_Record to say what we're recording a node.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96433 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-17 01:03:09 +00:00
Chris Lattner
5be6e5990b improve comments in generated matcher a bit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96422 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-17 00:39:26 +00:00
Chris Lattner
e609a513f3 make the new isel generator plop out a CheckComplexPattern function
for evaluating complex patterns.  Some cleanup has to happen before
this can be used though.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96419 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-17 00:31:50 +00:00
Chris Lattner
c2676b2909 fix inverted condition.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96416 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-17 00:11:30 +00:00
Chris Lattner
53a2f60062 complex patterns don't get 'record' nodes, they implicitly
record all their results.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96412 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-16 23:16:25 +00:00
Chris Lattner
05446e7d47 clean up some code, eliminate NodeIsComplexPattern, which
does the same thing as getComplexPatternInfo.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96411 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-16 23:13:59 +00:00
Chris Lattner
5b08f77096 fix indentation
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96409 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-16 22:38:31 +00:00
Chris Lattner
92d3ada814 fix rdar://7653908, a crash on a case where we would fold a load
into a roundss intrinsic, producing a cyclic dag.  The root cause
of this is badness handling ComplexPattern nodes in the old dagisel
that I noticed through inspection.  Eliminate a copy of the of the
code that handled ComplexPatterns by making EmitChildMatchCode call
into EmitMatchCode.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96408 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-16 22:35:06 +00:00
Chris Lattner
6bc1b51377 simplify this code. In the new world order there is no
need to scan the entire subtree of the pattern anymore.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96369 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-16 19:19:58 +00:00
Chris Lattner
21390d7984 convert the new matcher to check intermediate nodes for a single
use and only call IsProfitableToFold/IsLegalToFold on the load
being folded, like the old dagiselemitter does.  This 
substantially simplifies the code and improves opportunities for
sharing.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96368 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-16 19:15:55 +00:00
Chris Lattner
29c6270328 change dag isel emitter to only call 'IsProfitableToFold' on nodes
with chains.  On interior nodes that lead up to them, we just directly
check that there is a single use.  This generates slightly more
efficient code.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96366 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-16 19:03:34 +00:00
Chris Lattner
ccba15f914 mark all the generated node predicates 'const'.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96337 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-16 07:26:36 +00:00
Chris Lattner
050a03d0f3 generate code for node and pattern predicates. Note that this won't
build if enabled, it will fail with constness issues. I'll resolve 
these next.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96336 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-16 07:21:10 +00:00
Chris Lattner
e02ea54cfd refactor some code into a local class.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96334 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-16 06:52:01 +00:00
Chris Lattner
e2de49d9a1 remove now dead code and fixme.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96333 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-16 06:15:00 +00:00
Chris Lattner
6e6975d419 remove dead code. This is never generated for any targets in mainline.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96332 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-16 06:14:22 +00:00
Chris Lattner
e39650a805 add support for the new isel matcher to generate
(isprofitable|islegal)tofold checks.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96331 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-16 06:10:58 +00:00
Evan Cheng
014bf215c3 Split SelectionDAGISel::IsLegalAndProfitableToFold to
IsLegalToFold and IsProfitableToFold. The generic version of the later simply checks whether the folding candidate has a single use.

This allows the target isel routines more flexibility in deciding whether folding makes sense. The specific case we are interested in is folding constant pool loads with multiple uses.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96255 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-15 19:41:07 +00:00
Chris Lattner
da272d1a70 Check in the first big step of rewriting DAGISelEmitter to
produce a table based matcher instead of gobs of C++ Code.

Though it's not done yet, the shrinkage seems promising,
the table for the X86 ISel is 75K and still has a lot of 
optimization to come (compare to the ~1.5M of .o generated
the old way, much of which will go away).

The code is currently disabled by default (the #if 0 in
DAGISelEmitter.cpp).  When enabled it generates a dead
SelectCode2 function in the DAGISel Header which will
eventually replace SelectCode.

There is still a lot of stuff left to do, which are
documented with a trail of FIXMEs.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96215 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-15 08:04:42 +00:00
Mikhail Glushenkov
0b1a39577b Revert r96130 ("Forward parameter options as '-option=param'").
This behaviour must be configurable.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96210 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-15 03:17:06 +00:00
Chris Lattner
751d5aa1ea constize
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96199 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-14 22:33:49 +00:00
Chris Lattner
4766132036 clean up a bunch of code, move some random predicates
on TreePatternNode to be methods on TreePatternNode.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96197 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-14 22:22:58 +00:00
Chris Lattner
c87bf389dc remove the DisablePatternForFastISel predicate, which is a check
that predated -fast-isel which attempted to speed up the dag pattern
matchers at -O0.  Since fast-isel is around, this is basically 
obsolete and removing it shrinks the generated dag isels.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96188 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-14 21:11:53 +00:00
Chris Lattner
383fed9c7a add an insertion operator.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96187 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-14 21:10:33 +00:00
Chris Lattner
523f6a5848 tidy up
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96186 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-14 21:10:15 +00:00
Mikhail Glushenkov
18c67b994c Forward parameter options as '-option=parameter'.
Some tools do not like the '-option parameter' form. Should this be
configurable?

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96130 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-13 22:37:28 +00:00
Chris Lattner
a0cdf17f37 pull a bunch of huge inline methods in the PatternCodeEmitter
class out of line.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96113 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-13 20:06:50 +00:00
Sean Callanan
cebe955779 Added the rdtscp instruction to the x86 instruction
tables.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96073 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-13 02:06:11 +00:00
Sean Callanan
95a5a7d570 Fixed encodings for invlpg, invept, and invvpid.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96065 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-13 01:48:34 +00:00
Chris Lattner
a599de2410 remove special cases for vmlaunch, vmresume, vmxoff, and swapgs
fix swapgs to be spelled right.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96058 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-13 00:41:14 +00:00
Chris Lattner
eaca5fa8e6 Remove special cases for [LM]FENCE, MONITOR and MWAIT from
encoder and decoder by using new MRM_ forms.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96048 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-12 23:54:57 +00:00
Sean Callanan
9492be8d10 Reworked the Intel disassembler to support instructions
whose opcodes extend into the ModR/M field using the
Form field of the instruction rather than by special
casing each instruction.  Commented out the special
casing of VMCALL, which is the first instruction to use
this special form.  While I was in the neighborhood,
added a few comments for people modifying the Intel
disassembler. 


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96043 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-12 23:39:46 +00:00
Chris Lattner
0d8db8e0a8 add a bunch of mod/rm encoding types for fixed mod/rm bytes.
This will work better for the disassembler for modeling things
like lfence/monitor/vmcall etc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95960 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-12 02:06:33 +00:00
Daniel Dunbar
3b6910dcd4 MC: Fix bug where trailing tied operands were forgotten; the X86 assembler
matcher is now free of implicit operands!
 - Still need to clean up the code now that we don't to worry about implicit
   operands, and to make it a hard error if an instruction fails to specify all
   of its operands for some reason.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95956 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-12 01:46:54 +00:00
Chris Lattner
0d7b0aa760 enhance llvm-mc -show-inst to print the enum of an instruction, like so:
testb	%al, %al                ## <MCInst #2412 TEST8rr
                                        ##   <MCOperand Reg:2>
                                        ##   <MCOperand Reg:2>>
	jne	LBB1_7                  ## <MCInst #938 JNE_1
                                        ##   <MCOperand Expr:(LBB1_7)>>



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95935 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-11 22:57:32 +00:00
Chris Lattner
e555c9f4a5 work around a gcc bug with -Wuninitialized.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95808 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-10 21:22:51 +00:00
Daniel Dunbar
bef529182f MC/AsmMatcher: Tweak conversion function name.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95802 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-10 21:00:47 +00:00
Daniel Dunbar
af61681ced MC/AsmMatcher: Add support for creating tied operands when constructing MCInsts.
- Pretty messy, but we need to rework how we handle tied operands in MCInst
   anyway.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95774 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-10 08:15:48 +00:00
Sean Callanan
cf57c7084a Updated the enhanced disassembly library's TableGen
backend to not use exceptions at all except in cases
of actual error.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95762 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-10 03:23:23 +00:00
Sean Callanan
2db6ff2285 Updated the TableGen emitter for the Enhanced
Disassembler to take advantage of the refactored
AsmWriterInst.h.  Note removed parser code.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95760 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-10 02:47:08 +00:00
Sean Callanan
397170b0ab Changed AsmWriterOperand to also include the index of the
operand into the CodeGenInstruction's list of operands,
which is useful for EDEmitter.  (Still working on PR6219)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95759 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-10 02:27:43 +00:00
Chris Lattner
a7d479c7bd Introduce a new CodeGenInstruction::ConstraintInfo class
for representing constraint info semantically instead of
as a c expression that will be blatted out to the .inc
file.  Fix X86RecognizableInstr to use this instead of
parsing C code :).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95753 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-10 01:45:28 +00:00
Sean Callanan
d0bc7f060e Fixed some indentation in the AsmWriterInst
implementation.  Also changed the constructor
so that it does not require a Record, making it
usable by the EDEmitter.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95715 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-09 23:06:35 +00:00
Sean Callanan
3ac97b386b Added AsmWriterInst.cpp to the CMakeList so that
it builds OK on Visual Studio.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95702 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-09 22:29:16 +00:00
Sean Callanan
d32c02f314 Per PR 6219, factored AsmWriterInst and AsmWriterOperand
out of the AsmWriterEmitter.  This patch does the physical
code movement, but leaves the implementation unchanged. I'll
make any changes necessary to generalize the code in a
separate patch.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95697 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-09 21:50:41 +00:00