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Author SHA1 Message Date
Chris Lattner
f315628427 x and X should be structurally identical 
llvm-svn: 23273
 2005-09-08 18:47:43 +00:00
Chris Lattner
08274846d1 new expression type 
llvm-svn: 23272
 2005-09-08 18:47:21 +00:00
Chris Lattner
9e7e8d43e8 regenerate 
llvm-svn: 23271
 2005-09-08 18:22:57 +00:00
Chris Lattner
2e3ed074d8 Tabs to spaces. 
llvm-svn: 23270
 2005-09-08 18:22:35 +00:00
Chris Lattner
03637c7200 Keep names even when inlining. This allows us to realize that ADDI is: 
(set GPRC:i32:$rD, (add GPRC:i32:$rA, (imm)<<Predicate_immSExt16>>:$imm))

not:

(set GPRC:i32:$rD, (add GPRC:i32:$rA, (imm)<<Predicate_immSExt16>>))

(we keep the ":$imm")

llvm-svn: 23269
 2005-09-08 17:45:12 +00:00
Chris Lattner
7d0a6e4db4 add patterns for x?oris? 
llvm-svn: 23268
 2005-09-08 17:40:49 +00:00
Chris Lattner
c23c950d73 add patterns to the addi/addis/mulli etc instructions. Define predicates 
for matching signed 16-bit and shifted 16-bit ppc immediates

llvm-svn: 23267
 2005-09-08 17:33:10 +00:00
Chris Lattner
f0d65ab5d3 Add patterns for some new instructions, allowing the use of the ineg fragment. 
llvm-svn: 23266
 2005-09-08 17:01:54 +00:00
Chris Lattner
8449e3ad5f add some missing PPC backend files 
llvm-svn: 23265
 2005-09-07 23:57:00 +00:00
Chris Lattner
3c6d2bd13b Add tblgen fpcmp and the nightly tester to the utils folder 
llvm-svn: 23264
 2005-09-07 23:53:49 +00:00
Chris Lattner
1f7f2544fc ignore generated files 
llvm-svn: 23263
 2005-09-07 23:47:44 +00:00
Chris Lattner
1769be4699 Remove some cases handled by the generated portion of the isel 
llvm-svn: 23262
 2005-09-07 23:45:15 +00:00
Chris Lattner
65c98b6441 Initial cut of the dag isel generator. This is still very much a work in 
progress.  It correctly parses instructions and pattern fragments and glues
together pattern fragments into instructions.

The only code it generates currently is some boilerplate code for things
like the EntryNode.

llvm-svn: 23261
 2005-09-07 23:44:43 +00:00
Nate Begeman
c0f764ada4 Another round of dag combiner changes. This fixes some missing XOR folds 
as well as fixing how we replace old values with new values.

llvm-svn: 23260
 2005-09-07 23:25:52 +00:00
Chris Lattner
b3516c123f Fix a bug that Tzu-Chien Chiu noticed: live interval analysis does NOT 
preserve livevar

llvm-svn: 23259
 2005-09-07 17:34:39 +00:00
Nate Begeman
e8db0c961a Implement a common missing fold, (add (add x, c1), c2) -> (add x, c1+c2). 
This restores all of stanford to being identical with and without the dag
combiner with the add folding turned off in sd.cpp.

llvm-svn: 23258
 2005-09-07 16:09:19 +00:00
Chris Lattner
617b26ddd7 On non-apple systems, when using -march=ppc32, do not print: 
'' is not a recognized processor for this target (ignoring processor)

Default to "generic" instead of "" for the default CPU.

llvm-svn: 23257
 2005-09-07 05:45:33 +00:00
Chris Lattner
4c5e794a9c Print: 
'' is not a recognized processor for this target (ignoring processor)

instead of:

 is not a recognized processor for this target (ignoring processor)

llvm-svn: 23256
 2005-09-07 05:44:14 +00:00
Chris Lattner
482f71733a Fix a bug nate ran into with replacealluseswith. In the recursive cse case, 
we were losing a node, causing an assertion to fail.  Now we eagerly delete
discovered CSE's, and provide an optional vector to keep track of these
discovered equivalences.

llvm-svn: 23255
 2005-09-07 05:37:01 +00:00
Chris Lattner
b68c833b48 Add a new argument to ReplaceAllUsesWith to keep track of nodes deleted by 
this method

llvm-svn: 23254
 2005-09-07 05:36:18 +00:00
Nate Begeman
143dc2039d Add an option to the DAG Combiner to enable it for beta runs, and turn on 
that option for PowerPC's beta.

llvm-svn: 23253
 2005-09-07 00:15:36 +00:00
Chris Lattner
b529b1bdbd Rename a class. These files are being migrated to the new isel and I want to 
reuse the names

llvm-svn: 23252
 2005-09-06 22:51:34 +00:00
Nate Begeman
63817e5779 Test the new 64bit i64<->fp functionality 
llvm-svn: 23251
 2005-09-06 22:23:15 +00:00
Nate Begeman
718cae4eba Implement i64<->fp using the fctidz/fcfid instructions on PowerPC when we 
are allowed to generate 64-bit-only PowerPC instructions for 32 bit hosts,
such as the PowerPC 970.

This speeds up 189.lucas from 81.99 to 32.64 seconds.

llvm-svn: 23250
 2005-09-06 22:03:27 +00:00
Chris Lattner
f12074e8f6 regenerate 
llvm-svn: 23249
 2005-09-06 21:23:27 +00:00
Chris Lattner
5cd3a27513 Tighten up the specification to allow TableGen/nested-comment.td to pass 
(fixing a bug where / in a /* */ comment would cause it to not close).

llvm-svn: 23248
 2005-09-06 21:23:09 +00:00
Chris Lattner
8f067e5813 new testcase: tblgen should grok this. 
llvm-svn: 23247
 2005-09-06 21:22:15 +00:00
Andrew Lenharth
6f61810447 Fix up the AssertXext problem, as well as adding it at calls 
llvm-svn: 23246
 2005-09-06 17:00:23 +00:00
Nate Begeman
a94912c555 Add note about future optimization noted in the ppc compiler writer's guide 
llvm-svn: 23245
 2005-09-06 15:30:48 +00:00
Nate Begeman
f1994fa030 Add accessor for 64bit flag, so that we can tell when it is safe to 
generate the fun in-register fp<->long instructions.

llvm-svn: 23244
 2005-09-06 15:30:12 +00:00
Nate Begeman
e1a34193fa Next round of DAGCombiner changes. This version now passes all the tests 
I have run so far when run before Legalize.  It still needs to pick up the
SetCC folds, and nodes that use SetCC.

llvm-svn: 23243
 2005-09-06 04:43:02 +00:00
Chris Lattner
3a007653c4 Add a requirement, patch contributed by Henrik Bach. 
llvm-svn: 23242
 2005-09-06 04:07:15 +00:00
Andrew Lenharth
00a229859e revert part of the last change, should fix regressions 
llvm-svn: 23241
 2005-09-04 06:12:19 +00:00
Chris Lattner
e9b488e262 explicitly specify an operands list for patterns with inputs (e.g. neg) 
llvm-svn: 23240
 2005-09-03 01:28:40 +00:00
Chris Lattner
dcb9830e25 include the dag isel fragment 
llvm-svn: 23239
 2005-09-03 01:17:22 +00:00
Chris Lattner
4186020e3b ask for a dag isel 
llvm-svn: 23238
 2005-09-03 01:15:41 +00:00
Chris Lattner
9efe5b36c2 allow for a target to ask for a dag isel 
llvm-svn: 23237
 2005-09-03 01:15:25 +00:00
Chris Lattner
12c57505bf Add an option and stuff implementation of a dag isel emitter 
llvm-svn: 23236
 2005-09-03 01:14:03 +00:00
Chris Lattner
29929a3745 Fix a checking failure in gs 
llvm-svn: 23235
 2005-09-03 01:04:40 +00:00
Chris Lattner
cbfe5d4180 Change the isel to not break out of the big giant switch. Instead, the 
switch should never be exited, so its bottom is now unreachable.

llvm-svn: 23234
 2005-09-03 00:53:47 +00:00
Chris Lattner
47c5e11f36 rearrange logical ops to group them together more consistently. 
Define the PatFrag class which can be used to define subpatterns to match
things with.  Define 'not', and use it to define the patterns for andc,
nand, etc.

llvm-svn: 23233
 2005-09-03 00:21:51 +00:00
Chris Lattner
a1a3e767e3 Add AND/OR/XOR 
llvm-svn: 23232
 2005-09-02 22:35:53 +00:00
Nate Begeman
613f777bbc Next round of DAG Combiner changes. Just need to support multiple return 
values, and then we should be able to hook it up.

llvm-svn: 23231
 2005-09-02 21:18:40 +00:00
Chris Lattner
0b07b6f9a1 Add some initial patterns to simple binary instructions, though they 
currently don't do anything.  This elides patterns for binary operators
that ping on the carry flag, since we don't model it yet.

This patch also removes PPC::SUB, because it is dead.

llvm-svn: 23230
 2005-09-02 21:18:00 +00:00
Chris Lattner
da97aa059c Clean up some code from the last checkin 
llvm-svn: 23229
 2005-09-02 20:32:45 +00:00
Chris Lattner
4c2b614aa6 Fix a bug in legalize where it would emit two calls to libcalls that return 
i64 values on targets that need that expanded to 32-bit registers.  This fixes
PowerPC/2005-09-02-LegalizeDuplicatesCalls.ll and speeds up 189.lucas from
taking 122.72s to 81.96s on my desktop.

llvm-svn: 23228
 2005-09-02 20:26:58 +00:00
Chris Lattner
204e15f491 Test that converting from double to int64 results in one libcall, not one 
and a dead one.  This is a legalize bug

llvm-svn: 23227
 2005-09-02 20:24:10 +00:00
Chris Lattner
e1a69ba1bd turn on dag isel by default 
llvm-svn: 23226
 2005-09-02 19:53:54 +00:00
Chris Lattner
17b67e5137 Make sure to auto-cse nullary ops 
llvm-svn: 23224
 2005-09-02 19:36:17 +00:00
Chris Lattner
7862cff120 add a map for nullary ops 
llvm-svn: 23223
 2005-09-02 19:35:42 +00:00