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20070 Commits

Author SHA1 Message Date
Chris Lattner 3ba60bf644 Parse significantly more of the instruction pattern, now collecting and 
verifying information about the operands.

llvm-svn: 23353
 2005-09-14 20:53:42 +00:00
Chris Lattner f006d15e7f Fix some issues exposed by more testing. XORIS had the wrong operands 
specified.  The various *imm operands defined by PPC are really all i32,
even though the actual immediate is restricted to a smaller value in it.

llvm-svn: 23352
 2005-09-14 20:53:05 +00:00
Chris Lattner 22e60c99ce Verify that set destinations occur first in the instruction operand list. 
llvm-svn: 23351
 2005-09-14 18:19:25 +00:00
Chris Lattner 6b013fc923 Fix some bugs noticed by new checking code 
llvm-svn: 23350
 2005-09-14 18:18:39 +00:00
Chris Lattner fcffc98b05 add an accessor 
llvm-svn: 23349
 2005-09-14 18:02:53 +00:00
Chris Lattner a393e4d4b3 Fix the regression last night compiling povray 
llvm-svn: 23348
 2005-09-14 17:32:56 +00:00
Chris Lattner b42e962d23 fix a major regression from my patch this afternoon 
llvm-svn: 23347
 2005-09-14 06:06:45 +00:00
Chris Lattner 1c8d6ce015 remove some code that isn't ready for prime time 
llvm-svn: 23346
 2005-09-14 06:03:10 +00:00
Chris Lattner 3361eab530 Switch to a slightly more structured representation for instructions 
llvm-svn: 23345
 2005-09-14 04:03:16 +00:00
Chris Lattner 4cfcb544bf Add some more checking/verification code 
llvm-svn: 23344
 2005-09-14 02:11:12 +00:00
Chris Lattner 4c7b604091 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 b011cb2746 we don't need this proto any longer 
llvm-svn: 23342
 2005-09-13 22:05:21 +00:00
Chris Lattner bb9b01644e don't emit the namespace inside the class! 
llvm-svn: 23341
 2005-09-13 22:05:02 +00:00
Chris Lattner 70a7234111 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 03e08eefc7 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 3556d849da continue xform function parsing 
llvm-svn: 23338
 2005-09-13 21:59:15 +00:00
Chris Lattner 2617de498d Start parsing node transformation information 
llvm-svn: 23337
 2005-09-13 21:51:00 +00:00
Chris Lattner ae939eb6bb 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 f365e25a5c completely eliminate TreePattern::PatternType 
llvm-svn: 23335
 2005-09-13 21:20:49 +00:00
Chris Lattner 0f965a615e 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 ee8113293e This has been moved to the target-indep code 
llvm-svn: 23333
 2005-09-13 19:32:18 +00:00
Chris Lattner fb96e50b8c 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 d4382f0afa 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 64685b4ca2 Majik numbers are bad 
llvm-svn: 23330
 2005-09-13 19:03:13 +00:00
Chris Lattner aa6cbd90c5 Remove some dead vectors 
llvm-svn: 23329
 2005-09-13 18:47:49 +00:00
Chris Lattner 2a8932960d 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 fd018c8dfe 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 a78635c1f0 fails since linux-itanium headers are Different 
llvm-svn: 23326
 2005-09-13 01:03:53 +00:00
Chris Lattner 567b81f0d2 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 219175c84d 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 42a6cefa49 new testcase 
llvm-svn: 23323
 2005-09-12 23:22:17 +00:00
Chris Lattner e0bfdf1485 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 20c1cc0741 new testcase 
llvm-svn: 23321
 2005-09-12 22:19:46 +00:00
Chris Lattner b990f7d8ed 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 4cd474ebbd new testcase 
llvm-svn: 23319
 2005-09-12 21:59:22 +00:00
Chris Lattner 8048b85e8f 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 2ee807c70f relax pattern match on name 
llvm-svn: 23317
 2005-09-12 17:09:40 +00:00
Chris Lattner 7efb86dc11 new testcase 
llvm-svn: 23316
 2005-09-12 17:08:15 +00:00
Chris Lattner b35df5f5bc Add a new getLoopLatch() method. 
llvm-svn: 23315
 2005-09-12 17:03:55 +00:00
Chris Lattner 589e605f42 new method 
llvm-svn: 23314
 2005-09-12 17:03:16 +00:00
Chris Lattner a67648396a _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 2bb00dda5a new testcase 
llvm-svn: 23312
 2005-09-12 05:50:15 +00:00
Chris Lattner d0c7a5eeb7 Regenerate 
llvm-svn: 23311
 2005-09-12 05:30:06 +00:00
Chris Lattner 564d240799 Rearrange two rules, which apparently makes some versions of bison happier. 
llvm-svn: 23310
 2005-09-12 05:29:43 +00:00
Chris Lattner ecd98d5d77 Make sure to disable 64-bit extensions for this test 
llvm-svn: 23309
 2005-09-11 03:50:38 +00:00
Jeff Cohen e19ca3ab0c Fix more Visual Studio build problems. 
llvm-svn: 23308
 2005-09-10 02:33:17 +00:00
Jeff Cohen 0dce12dd90 Fix miscellaneous Visual Studio build problems. 
llvm-svn: 23307
 2005-09-10 02:00:02 +00:00
Chris Lattner 530fe6ab30 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 0c7728e4d6 new testcase 
llvm-svn: 23305
 2005-09-10 01:14:37 +00:00
Chris Lattner 4309c3a785 PowerPC cannot truncstore i1 natively 
llvm-svn: 23304
 2005-09-10 00:21:06 +00:00