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20434 Commits

Author SHA1 Message Date
Chris Lattner 6e83cbf7f3 add a new SDTCisOpSmallerThanOp type constraint, and implement fround/fextend in terms of it 
llvm-svn: 23726
 2005-10-14 04:55:10 +00:00
Chris Lattner 4892df38f3 Add basic support for recognizing a new SDTCisOpSmallerThanOp type constraint 
llvm-svn: 23725
 2005-10-14 04:53:53 +00:00
Chris Lattner 7b0275ba8c Implement a couple of new (important) features. 
1. If an operation has to be int or fp and the target only supports one
   int or fp type, relize that the op has to have that type.
2. If a target has operations on multiple types, do not emit matching code
   for patterns involving those operators, since we do not emit the code to
   check for them yet.  This prevents PPC from generating FP ops currently.

Also move some code around into more logical places.

llvm-svn: 23724
 2005-10-14 04:11:13 +00:00
Chris Lattner 90c5b9c83c Do not let getLegalValueTypes return a list with duplicates in it 
llvm-svn: 23723
 2005-10-14 03:54:49 +00:00
Nate Begeman 6e673b24d3 fold sext_in_reg, sext_in_reg where both have the same VT. This was 
popping up in Fourinarow.

llvm-svn: 23722
 2005-10-14 01:29:07 +00:00
Chris Lattner e3870fbe4a Allow $ 
llvm-svn: 23721
 2005-10-14 01:28:34 +00:00
Nate Begeman d59e5a7abb Relax the checking on zextload generation a bit, since as sabre pointed out 
you could be AND'ing with the result of a shift that shifts out all the
bits you care about, in addition to a constant.

Also, move over an add/sub_parts fold from legalize to the dag combiner,
where it works for things other than constants.  Woot!

llvm-svn: 23720
 2005-10-14 01:12:21 +00:00
Chris Lattner a6d62322e5 Fix errors when compiling with -pedantic 
llvm-svn: 23719
 2005-10-14 00:33:05 +00:00
Chris Lattner b8282987f4 Fix the trunc(load) case, finally allowing crafty and povray to pass 
llvm-svn: 23718
 2005-10-13 22:10:05 +00:00
Chris Lattner dbc5ae3109 Fix some bugs in (sext (load x)) 
llvm-svn: 23717
 2005-10-13 21:52:31 +00:00
Chris Lattner 258521d7ea When ExpandOp'ing a [SZ]EXTLOAD, make sure to remember that the chain 
is also legal.  Add support for ExpandOp'ing raw EXTLOADs too.

llvm-svn: 23716
 2005-10-13 21:44:47 +00:00
Chris Lattner d23f4b7411 Implement PromoteOp for *EXTLOAD, allowing MallocBench/gs to Legalize 
llvm-svn: 23715
 2005-10-13 20:07:41 +00:00
Nate Begeman 8e022b3d89 Fix the remaining DAGCombiner issues pointed out by sabre. This should fix 
the remainder of the failures introduced by my patch last night.

llvm-svn: 23714
 2005-10-13 18:34:58 +00:00
Chris Lattner a80f1f6e72 Fix a minor bug in the dag combiner that broke pcompress2 and some other 
tests.

llvm-svn: 23713
 2005-10-13 18:16:34 +00:00
Patrick Meredith 16fe45c91b Updated to be less restrictive on what is matched 
llvm-svn: 23712
 2005-10-13 17:31:30 +00:00
Nate Begeman c3a89c5259 Add support to Legalize for expanding i64 sextload/zextload into hi and lo 
parts. This should fix the crafty and signed long long unit test failure
on x86 last night.

llvm-svn: 23711
 2005-10-13 17:15:37 +00:00
Jim Laskey 5d7a50ac44 Inhibit instructions from being pushed before function calls. This will 
minimize unnecessary spilling.

llvm-svn: 23710
 2005-10-13 16:44:00 +00:00
Chris Lattner e70b0d37c3 apparently one of the makefile changes changed libprofile.so to profile.so 
llvm-svn: 23709
 2005-10-13 16:34:24 +00:00
Patrick Meredith fd377d9033 This script is used to remove nodes with the label %tmp(.#)* and all 
edges associated with said node from the dot files produced by
DSA.

llvm-svn: 23708
 2005-10-13 16:26:50 +00:00
Chris Lattner eeaf2094b8 Nate implemented this :) 
llvm-svn: 23707
 2005-10-13 06:04:34 +00:00
Nate Begeman 02b23c6065 Move some Legalize functionality over to the DAGCombiner where it belongs. 
Kill some dead code.

llvm-svn: 23706
 2005-10-13 03:11:28 +00:00
Nate Begeman b96e50ccbd SimplifySelectCC is dead 
llvm-svn: 23705
 2005-10-13 03:10:46 +00:00
Nate Begeman 70d28c5e32 Fix a potential bug with two combine-to's back to back that chris pointed 
out, where after the first CombineTo() call, the node the second CombineTo
wishes to replace may no longer exist.

Fix a very real bug with the truncated load optimization on little endian
targets, which do not need a byte offset added to the load.

llvm-svn: 23704
 2005-10-12 23:18:53 +00:00
Nate Begeman 8caf81d617 More cool stuff for the dag combiner. We can now finally handle things 
like turning:

_foo:
        fctiwz f0, f1
        stfd f0, -8(r1)
        lwz r2, -4(r1)
        rlwinm r3, r2, 0, 16, 31
        blr

into
_foo:
        fctiwz f0,f1
        stfd f0,-8(r1)
        lhz r3,-2(r1)
        blr

Also removed an unncessary constraint from sra -> srl conversion, which
should take care of hte only reason we would ever need to handle sra in
MaskedValueIsZero, AFAIK.

llvm-svn: 23703
 2005-10-12 20:40:40 +00:00
Jim Laskey 63b1419b74 Finally committing to the new scheduler. Still -sched=none by default. 
llvm-svn: 23702
 2005-10-12 18:29:35 +00:00
Jim Laskey d00db257c7 Added graphviz/gv support for MF. 
llvm-svn: 23700
 2005-10-12 12:09:05 +00:00
Chris Lattner e1832ccf63 this passes with the change in predicate 
llvm-svn: 23699
 2005-10-11 18:42:26 +00:00
Chris Lattner 192cd18f53 Fix (hopefully the last) issue where LSR is nondeterminstic. When pulling 
out CSE's of base expressions it could build a result whose order was
nondet.

llvm-svn: 23698
 2005-10-11 18:41:04 +00:00
Chris Lattner 5c9d63da31 Fix another problem where LSR was being nondeterminstic. Also remove elements 
from the end of a vector instead of the beginning

llvm-svn: 23697
 2005-10-11 18:30:57 +00:00
Chris Lattner eb1579d308 lsr doesn't emit gep instructions anymore 
llvm-svn: 23696
 2005-10-11 18:28:48 +00:00
Chris Lattner b7a3894e7c Fix another lsr-is-nondeterministic case 
llvm-svn: 23695
 2005-10-11 18:17:57 +00:00
Chris Lattner 514f058be1 Fix a powerpc crash on CodeGen/Generic/llvm-ct-intrinsics.ll 
llvm-svn: 23694
 2005-10-11 17:56:34 +00:00
Chris Lattner c38fb8e2a1 Add a canonicalization that got lost, fixing PowerPC/fold-li.ll:SUB 
llvm-svn: 23693
 2005-10-11 06:07:15 +00:00
Chris Lattner cc6e53e6ee clean up some corner cases 
llvm-svn: 23692
 2005-10-10 23:00:08 +00:00
Chris Lattner 04c737091f Implement trivial DSE. If two stores are neighbors and store to the same 
location, replace them with a new store of the last value.  This occurs
in the same neighborhood in 197.parser, speeding it up about 1.5%

llvm-svn: 23691
 2005-10-10 22:31:19 +00:00
Chris Lattner e260ed8628 Add support for CombineTo, allowing the dag combiner to replace nodes with 
multiple results.

Use this support to implement trivial store->load forwarding, implementing
CodeGen/PowerPC/store-load-fwd.ll.  Though this is the most simple case and
can be extended in the future, it is still useful.  For example, it speeds
up 197.parser by 6.2% by avoiding an LSU reject in xalloc:

        stw r6, lo16(l5_end_of_array)(r2)
        addi r2, r5, -4
        stwx r5, r4, r2
-       lwzx r5, r4, r2
-       rlwinm r5, r5, 0, 0, 30
        stwx r5, r4, r2
        lwz r2, -4(r4)
        ori r2, r2, 1

llvm-svn: 23690
 2005-10-10 22:04:48 +00:00
Chris Lattner 89a39f1508 new testcase 
llvm-svn: 23689
 2005-10-10 21:57:37 +00:00
Nate Begeman 6828ed9bfd Teach the DAGCombiner several new tricks, teaching it how to turn 
sext_inreg into zext_inreg based on the signbit (fires a lot), srem into
urem, etc.

llvm-svn: 23688
 2005-10-10 21:26:48 +00:00
Chris Lattner 4653985b86 A testcase sitting in my tree 
llvm-svn: 23687
 2005-10-10 21:21:36 +00:00
Chris Lattner 7730924067 Fix comment 
llvm-svn: 23686
 2005-10-10 16:52:03 +00:00
Chris Lattner 3d1d4a3d12 Add ISD::ADD to MaskedValueIsZero 
llvm-svn: 23685
 2005-10-10 16:51:40 +00:00
Chris Lattner 56e44a6da5 This function is now dead 
llvm-svn: 23684
 2005-10-10 16:49:22 +00:00
Chris Lattner bcfebebf22 Enable Nate's excellent DAG combiner work by default. This allows the 
removal of a bunch of ad-hoc and crufty code from SelectionDAG.cpp.

llvm-svn: 23682
 2005-10-10 16:47:10 +00:00
Chris Lattner d59a57a8d5 These definitions have been moved to common code. 
llvm-svn: 23681
 2005-10-10 06:01:00 +00:00
Chris Lattner d83571bbf2 Pull DAG ISel generation nodes out of the PowerPC backend to where they 
can be used by other targets.  For those targets that want to use it,
have at.  :)

llvm-svn: 23680
 2005-10-10 06:00:30 +00:00
Chris Lattner 6a49b7cabb add a todo for something I noticed 
llvm-svn: 23679
 2005-10-09 22:59:08 +00:00
Chris Lattner 1d3dc00674 (X & Y) & C == 0 if either X&C or Y&C are zero 
llvm-svn: 23678
 2005-10-09 22:12:36 +00:00
Chris Lattner 03b9eb506c Make MaskedValueIsZero a bit more aggressive 
llvm-svn: 23677
 2005-10-09 22:08:50 +00:00
Andrew Lenharth 1dfb85c7af This seems useful from the original patch that added the function. If there is a reason it is not useful on a RISC type target, let me know and I will pull it out 
llvm-svn: 23676
 2005-10-09 20:11:35 +00:00
Chris Lattner 62010c450f Fix funky xcode indentation 
llvm-svn: 23674
 2005-10-09 06:36:35 +00:00