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Author SHA1 Message Date
Chris Lattner
b97354c974 Fix some bugs noticed by new checking code 
llvm-svn: 23350
 2005-09-14 18:18:39 +00:00
Chris Lattner
76f1dae1af add an accessor 
llvm-svn: 23349
 2005-09-14 18:02:53 +00:00
Chris Lattner
c7fe78d9a1 Fix the regression last night compiling povray 
llvm-svn: 23348
 2005-09-14 17:32:56 +00:00
Chris Lattner
fa644b391f fix a major regression from my patch this afternoon 
llvm-svn: 23347
 2005-09-14 06:06:45 +00:00
Chris Lattner
72cfebc71b remove some code that isn't ready for prime time 
llvm-svn: 23346
 2005-09-14 06:03:10 +00:00
Chris Lattner
c4ae94aa32 Switch to a slightly more structured representation for instructions 
llvm-svn: 23345
 2005-09-14 04:03:16 +00:00
Chris Lattner
77cc161bd5 Add some more checking/verification code 
llvm-svn: 23344
 2005-09-14 02:11:12 +00:00
Chris Lattner
9ab561788e start parsing instructions into patterns, start doing many more checks of 
'set's.

llvm-svn: 23343
 2005-09-14 00:09:24 +00:00
Chris Lattner
c7fb54af0b we don't need this proto any longer 
llvm-svn: 23342
 2005-09-13 22:05:21 +00:00
Chris Lattner
e2591652a2 don't emit the namespace inside the class! 
llvm-svn: 23341
 2005-09-13 22:05:02 +00:00
Chris Lattner
1da656efd4 Emit code suitable for emission into the ISel class, allowing us to use/define 
methods.

llvm-svn: 23340
 2005-09-13 22:03:37 +00:00
Chris Lattner
ffab20ddeb move the #include for the generated code into the isel class body so we 
can use/define class methods

llvm-svn: 23339
 2005-09-13 22:03:06 +00:00
Chris Lattner
9bb7fff501 continue xform function parsing 
llvm-svn: 23338
 2005-09-13 21:59:15 +00:00
Chris Lattner
abc740453c Start parsing node transformation information 
llvm-svn: 23337
 2005-09-13 21:51:00 +00:00
Chris Lattner
0dd99c9aaf Add a new Record::getValueAsCode method to mirror the other getValueAs* 
methods.  Use it to simplify some code.

llvm-svn: 23336
 2005-09-13 21:44:28 +00:00
Chris Lattner
4e59482982 completely eliminate TreePattern::PatternType 
llvm-svn: 23335
 2005-09-13 21:20:49 +00:00
Chris Lattner
16700b9beb Change the arg lowering code to use copyfromreg from vregs associated 
with incoming arguments instead of the pregs themselves.  This fixes
the scheduler from causing problems by moving a copyfromreg for an argument
to after a select_cc node (now it can, and bad things won't happen).

llvm-svn: 23334
 2005-09-13 19:33:40 +00:00
Chris Lattner
b56110ff54 This has been moved to the target-indep code 
llvm-svn: 23333
 2005-09-13 19:32:18 +00:00
Chris Lattner
00bfb7812d This code is no longer needed, it is moved to the target-indep code 
llvm-svn: 23332
 2005-09-13 19:31:44 +00:00
Chris Lattner
49669dd169 If a function has liveins, and if the target requested that they be plopped 
into particular vregs, emit copies into the entry MBB.

llvm-svn: 23331
 2005-09-13 19:30:54 +00:00
Chris Lattner
075b4458cf Majik numbers are bad 
llvm-svn: 23330
 2005-09-13 19:03:13 +00:00
Chris Lattner
766369cf45 Remove some dead vectors 
llvm-svn: 23329
 2005-09-13 18:47:49 +00:00
Chris Lattner
f020513d57 Add a simple xform to simplify array accesses with casts in the way. 
This is useful for 178.galgel where resolution of dope vectors (by the
optimizer) causes the scales to become apparent.

llvm-svn: 23328
 2005-09-13 18:36:04 +00:00
Chris Lattner
26aef8992f Fix an issue where LSR would miss rewriting a use of an IV expression by a PHI node that is not the original PHI. 
This fixes up a dot-product loop in galgel, speeding it up from 18.47s to
16.13s.

llvm-svn: 23327
 2005-09-13 02:09:55 +00:00
Duraid Madina
5c8de93882 fails since linux-itanium headers are Different 
llvm-svn: 23326
 2005-09-13 01:03:53 +00:00
Chris Lattner
4284014415 Add a helper function, allowing us to simplify some code a bit, changing 
indentation, no functionality change

llvm-svn: 23325
 2005-09-13 00:40:14 +00:00
Chris Lattner
d35d5d2492 Implement a simple xform to turn code like this: 
if () { store A -> P; } else { store B -> P; }

into a PHI node with one store, in the most trival case.  This implements
load.ll:test10.

llvm-svn: 23324
 2005-09-12 23:23:25 +00:00
Chris Lattner
dbe60107c5 new testcase 
llvm-svn: 23323
 2005-09-12 23:22:17 +00:00
Chris Lattner
6eee5b16b1 Another load-peephole optimization: do gcse when two loads are next to 
each other.  This implements InstCombine/load.ll:test9

llvm-svn: 23322
 2005-09-12 22:21:03 +00:00
Chris Lattner
db236987c2 new testcase 
llvm-svn: 23321
 2005-09-12 22:19:46 +00:00
Chris Lattner
2657841260 Implement a trivial form of store->load forwarding where the store and the 
load are exactly consequtive.  This is picked up by other passes, but this
triggers thousands of times in fortran programs that use static locals
(and is thus a compile-time speedup).

llvm-svn: 23320
 2005-09-12 22:00:15 +00:00
Chris Lattner
c183614166 new testcase 
llvm-svn: 23319
 2005-09-12 21:59:22 +00:00
Chris Lattner
a949a2836d Fix a regression from last night, which caused this pass to create invalid 
code for IV uses outside of loops that are not dominated by the latch block.
We should only convert these uses to use the post-inc value if they ARE
dominated by the latch block.

Also use a new LoopInfo method to simplify some code.

This fixes Transforms/LoopStrengthReduce/2005-09-12-UsesOutOutsideOfLoop.ll

llvm-svn: 23318
 2005-09-12 17:11:27 +00:00
Chris Lattner
fa762ece7e relax pattern match on name 
llvm-svn: 23317
 2005-09-12 17:09:40 +00:00
Chris Lattner
2a30ed887c new testcase 
llvm-svn: 23316
 2005-09-12 17:08:15 +00:00
Chris Lattner
ab0448905e Add a new getLoopLatch() method. 
llvm-svn: 23315
 2005-09-12 17:03:55 +00:00
Chris Lattner
f3471861a6 new method 
llvm-svn: 23314
 2005-09-12 17:03:16 +00:00
Chris Lattner
780ffd9c1f _test: 
li r2, 0
LBB_test_1:     ; no_exit.2
        li r5, 0
        stw r5, 0(r3)
        addi r2, r2, 1
        addi r3, r3, 4
        cmpwi cr0, r2, 701
        blt cr0, LBB_test_1     ; no_exit.2
LBB_test_2:     ; loopexit.2.loopexit
        addi r2, r2, 1
        stw r2, 0(r4)
        blr
[zion ~/llvm]$ cat > ~/xx
Uses of IV's outside of the loop should use hte post-incremented version
of the IV, not the preincremented version.  This helps many loops (e.g. in sixtrack)
which used to generate code like this (this is the code from the
dont-hoist-simple-loop-constants.ll testcase):

_test:
        li r2, 0                 **** IV starts at 0
LBB_test_1:     ; no_exit.2
        or r5, r2, r2            **** Copy for loop exit
        li r2, 0
        stw r2, 0(r3)
        addi r3, r3, 4
        addi r2, r5, 1
        addi r6, r5, 2           **** IV+2
        cmpwi cr0, r6, 701
        blt cr0, LBB_test_1     ; no_exit.2
LBB_test_2:     ; loopexit.2.loopexit
        addi r2, r5, 2       ****  IV+2
        stw r2, 0(r4)
        blr

And now generated code like this:

_test:
        li r2, 1               *** IV starts at 1
LBB_test_1:     ; no_exit.2
        li r5, 0
        stw r5, 0(r3)
        addi r2, r2, 1
        addi r3, r3, 4
        cmpwi cr0, r2, 701     *** IV.postinc + 0
        blt cr0, LBB_test_1
LBB_test_2:     ; loopexit.2.loopexit
        stw r2, 0(r4)          *** IV.postinc + 0
        blr

llvm-svn: 23313
 2005-09-12 06:04:47 +00:00
Chris Lattner
963c549bc9 new testcase 
llvm-svn: 23312
 2005-09-12 05:50:15 +00:00
Chris Lattner
773456a944 Regenerate 
llvm-svn: 23311
 2005-09-12 05:30:06 +00:00
Chris Lattner
8b34f3d20d Rearrange two rules, which apparently makes some versions of bison happier. 
llvm-svn: 23310
 2005-09-12 05:29:43 +00:00
Chris Lattner
94198e530b Make sure to disable 64-bit extensions for this test 
llvm-svn: 23309
 2005-09-11 03:50:38 +00:00
Jeff Cohen
ce2b74a2b5 Fix more Visual Studio build problems. 
llvm-svn: 23308
 2005-09-10 02:33:17 +00:00
Jeff Cohen
7e6b5c60fc Fix miscellaneous Visual Studio build problems. 
llvm-svn: 23307
 2005-09-10 02:00:02 +00:00
Chris Lattner
ddec75fdf6 implement Transforms/LoopStrengthReduce/dont-hoist-simple-loop-constants.ll. 
We used to emit this code for it:

_test:
        li r2, 1     ;; Value tying up a register for the whole loop
        li r5, 0
LBB_test_1:     ; no_exit.2
        or r6, r5, r5
        li r5, 0
        stw r5, 0(r3)
        addi r5, r6, 1
        addi r3, r3, 4
        add r7, r2, r5  ;; should be addi r7, r5, 1
        cmpwi cr0, r7, 701
        blt cr0, LBB_test_1     ; no_exit.2
LBB_test_2:     ; loopexit.2.loopexit
        addi r2, r6, 2
        stw r2, 0(r4)
        blr

now we emit this:

_test:
        li r2, 0
LBB_test_1:     ; no_exit.2
        or r5, r2, r2
        li r2, 0
        stw r2, 0(r3)
        addi r3, r3, 4
        addi r2, r5, 1
        addi r6, r5, 2   ;; whoa, fold those adds!
        cmpwi cr0, r6, 701
        blt cr0, LBB_test_1     ; no_exit.2
LBB_test_2:     ; loopexit.2.loopexit
        addi r2, r5, 2
        stw r2, 0(r4)
        blr

more improvement coming.

llvm-svn: 23306
 2005-09-10 01:18:45 +00:00
Chris Lattner
97f62d0f5e new testcase 
llvm-svn: 23305
 2005-09-10 01:14:37 +00:00
Chris Lattner
00e9278551 PowerPC cannot truncstore i1 natively 
llvm-svn: 23304
 2005-09-10 00:21:06 +00:00
Chris Lattner
38fb15db44 Allow targets to say they don't support truncstore i1 (which includes a mask 
when storing to an 8-bit memory location), as most don't.

llvm-svn: 23303
 2005-09-10 00:20:18 +00:00
Chris Lattner
52a8cb35e6 Add a missing #include, patch courtesy of Baptiste Lepilleur. 
llvm-svn: 23302
 2005-09-09 23:53:39 +00:00
Chris Lattner
cae9229d6e Fix a problem duraid encountered on itanium where this folding: 
select (x < y), 1, 0 -> (x < y) incorrectly: the setcc returns i1 but the
select returned i32.  Add the zero extend as needed.

llvm-svn: 23301
 2005-09-09 23:00:07 +00:00