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22620 Commits

Author SHA1 Message Date
Chris Lattner a9b2525d3e Implement the AsmPrinter::getPreferredAlignmentLog method. 
llvm-svn: 25978
 2006-02-05 01:29:18 +00:00
Chris Lattner 9d0b2f7b50 add a new method, getPreferredAlignmentLog. 
llvm-svn: 25977
 2006-02-05 01:24:06 +00:00
Andrew Lenharth 1fcff15f86 linkage fix for weak functions 
llvm-svn: 25976
 2006-02-04 19:13:09 +00:00
Jeff Cohen 95ae171d5b Fix VC++ warning. 
llvm-svn: 25975
 2006-02-04 16:20:31 +00:00
Chris Lattner d30c4991a1 Use SCEVExpander::InsertCastOfTo instead of our own code. This reduces 
#LLVM LOC, and auto-cse's cast instructions.

llvm-svn: 25974
 2006-02-04 09:52:43 +00:00
Chris Lattner a6da69cab0 Pull the InsertCastOfTo out of the header, implement CSE'ing of arguments. 
llvm-svn: 25973
 2006-02-04 09:51:53 +00:00
Chris Lattner 5107cdcc73 Refactor a bunch of code into a non-inlined method 
llvm-svn: 25972
 2006-02-04 09:51:33 +00:00
Chris Lattner 22b4edfb42 Temporarily revert this patch, which probably breaks with the 
tblgen patch reverted.

llvm-svn: 25971
 2006-02-04 09:24:16 +00:00
Chris Lattner 586b06281c Temporarily revert the last change, which breaks PPC and other targets that 
DO select things.

llvm-svn: 25970
 2006-02-04 09:23:06 +00:00
Chris Lattner b6a1865bca Value# select instructions, allowing -gcse to remove duplicates 
llvm-svn: 25969
 2006-02-04 09:15:29 +00:00
Evan Cheng ce87cac555 Complex pattern's custom matcher should not call Select() on any operands. 
Select them afterwards if it returns true.

llvm-svn: 25968
 2006-02-04 08:50:49 +00:00
Chris Lattner ab146eae38 Custom lower VAARG for the case when we are doing vaarg(double). In this 
case, the double being loaded may not be 8-byte aligned, so we have to use
our standard bit_convert game.

llvm-svn: 25967
 2006-02-04 08:31:30 +00:00
Chris Lattner a1fa8b1c88 Fix a nasty typo that broke functions with big stack frames. 
llvm-svn: 25966
 2006-02-04 08:04:21 +00:00
Chris Lattner d096b2f3e0 fix a bug in my last checkin 
llvm-svn: 25965
 2006-02-04 07:48:46 +00:00
Chris Lattner 2959f0003e Fix two significant bugs in LSR: 
1. When rewriting code in outer loops, sometimes we would insert code into
   inner loops that is invariant in that loop.
2. Notice that 4*(2+x) is 8+4*x and use that to simplify expressions.

This is a performance neutral change.

llvm-svn: 25964
 2006-02-04 07:36:50 +00:00
Nate Begeman a1e895cf97 Remove some stuff that now works 
llvm-svn: 25963
 2006-02-04 07:29:35 +00:00
Chris Lattner 32ed2b45c7 add a note 
llvm-svn: 25962
 2006-02-04 07:07:31 +00:00
Chris Lattner 2c0956bcea Two changes: 
1. Treat FMOVD as a copy instruction, to help with coallescing in V9 mode
2. When in V9 mode, insert FMOVD instead of FpMOVD instructions, as we don't
   ever rewrite FpMOVD instructions into FMOVS instructions, thus we just end
   up with commented out copies!
This should fix a bunch of failures in V9 mode on sparc.

llvm-svn: 25961
 2006-02-04 06:58:46 +00:00
Evan Cheng f9adce90bf Get rid of some memory leaks identified by Valgrind 
llvm-svn: 25960
 2006-02-04 06:49:00 +00:00
Chris Lattner ca05e6a837 add a method 
llvm-svn: 25959
 2006-02-04 05:49:01 +00:00
Chris Lattner 2d2e2e3c0e Let bugpoint work on sparc with v9 instructions enabled. 
llvm-svn: 25958
 2006-02-04 05:02:27 +00:00
Jeff Cohen 57a004abfe Fix VC++ warning. 
llvm-svn: 25957
 2006-02-04 03:27:39 +00:00
Jeff Cohen 0e7aee2382 Keep Visual Studio informed. 
llvm-svn: 25956
 2006-02-04 03:27:04 +00:00
Chris Lattner 3b48431333 Add initial support for immediates. This allows us to compile this: 
int %rlwnm(int %A, int %B) {
  %C = call int asm "rlwnm $0, $1, $2, $3, $4", "=r,r,r,n,n"(int %A, int %B, int 4, int 17)
  ret int %C
}

into:

_rlwnm:
        or r2, r3, r3
        or r3, r4, r4
        rlwnm r2, r2, r3, 4, 17    ;; note the immediates :)
        or r3, r2, r2
        blr

llvm-svn: 25955
 2006-02-04 02:26:14 +00:00
Evan Cheng 0a977c95aa Remove an unnecessary predicate. 
llvm-svn: 25954
 2006-02-04 02:23:01 +00:00
Evan Cheng 11613a5219 Separate FILD and FILD_FLAG, the later is only used for SSE2. It produces a 
flag so it can be flagged to a FST.

llvm-svn: 25953
 2006-02-04 02:20:30 +00:00
Chris Lattner 65ad53feb3 Initial early support for non-register operands, like immediates 
llvm-svn: 25952
 2006-02-04 02:16:44 +00:00
Chris Lattner ee1dadbccf implementation of some methods for inlineasm 
llvm-svn: 25951
 2006-02-04 02:13:02 +00:00
Chris Lattner 3fb81ddda3 Add some methods for inline asm support. 
llvm-svn: 25950
 2006-02-04 02:12:09 +00:00
Chris Lattner c93403a7fb Handle another case exposed on X86. 
llvm-svn: 25949
 2006-02-03 23:50:46 +00:00
Chris Lattner 71d20c4e18 Fix a nasty problem on two-address machines in the following situation: 
store EAX -> [ss#0]
[ss#0] += 1
...
use(EAX)

In this case, it is not valid to rewrite this as:


store EAX -> [ss#0]
EAX += 1
store EAX -> [ss#0]  ;;; this would also delete the store above
...
use(EAX)

... because EAX is not a dead at that point.  Keep track of which registers
we are allowed to clobber, and which ones we aren't, and don't clobber the
ones we're not supposed to.  :)

This should resolve the issues on X86 last night.

llvm-svn: 25948
 2006-02-03 23:28:46 +00:00
Chris Lattner 507a3a7bd1 significantly simplify the VirtRegMap code by pulling the SpillSlotsAvailable 
and PhysRegsAvailable maps out into a new AvailableSpills struct.  No
functionality change.

This paves the way for a bugfix, coming up next.

llvm-svn: 25947
 2006-02-03 23:13:58 +00:00
Nate Begeman 20a894282d Implement some feedback from sabre 
llvm-svn: 25946
 2006-02-03 22:38:07 +00:00
Nate Begeman dc7bba9ffe Add a framework for eliminating instructions that produces undemanded bits. 
llvm-svn: 25945
 2006-02-03 22:24:05 +00:00
Chris Lattner 81e66abd1e add a note 
llvm-svn: 25944
 2006-02-03 22:06:45 +00:00
Chris Lattner d079dbb9b0 another case Nate came up with 
llvm-svn: 25943
 2006-02-03 22:05:41 +00:00
Chris Lattner 277462e20f add a note 
llvm-svn: 25942
 2006-02-03 21:25:23 +00:00
Chris Lattner f68fd20286 remove some #ifdef'd out code, which should properly be in the dag combiner anyway. 
llvm-svn: 25941
 2006-02-03 20:13:59 +00:00
Chris Lattner a1d312c6ea remove an old comment 
llvm-svn: 25940
 2006-02-03 18:59:39 +00:00
Chris Lattner 23d55f2547 Remove the X86PeepholeOptimizerPass, a truly horrible old hack that is now 
obsolete.  yaay :)

llvm-svn: 25939
 2006-02-03 18:54:24 +00:00
Chris Lattner c408558638 When rewriting frame instructions, emit the appropriate small-immediate 
instruction when possible.

llvm-svn: 25938
 2006-02-03 18:20:04 +00:00
Chris Lattner 2bcfc52af6 node predicates add to the complexity of a pattern. This ensures that the 
X86 backend attempts to match small-immediate versions of instructions before
the full size immediate versions.

llvm-svn: 25937
 2006-02-03 18:06:02 +00:00
Chris Lattner ca76917388 Teach sparc to fold loads/stores into copies. 
Remove the dead getRegClassForType method
minor formating changes.

llvm-svn: 25936
 2006-02-03 07:06:25 +00:00
Chris Lattner 6091407783 remove dead fn 
llvm-svn: 25935
 2006-02-03 06:51:34 +00:00
Nate Begeman 22e251abf1 Add common code for reassociating ops in the dag combiner 
llvm-svn: 25934
 2006-02-03 06:46:56 +00:00
Evan Cheng d65461c232 Added a (store (op (load ...) ...) ...) folding test case. 
llvm-svn: 25933
 2006-02-03 06:46:41 +00:00
Chris Lattner d7d98611ca Implement isLoadFromStackSlot and isStoreToStackSlot 
llvm-svn: 25932
 2006-02-03 06:44:54 +00:00
Evan Cheng 717db484a5 (store (op (load ...))) folding problem. In the generated matching code, 
Chain is initially set to the chain operand of store node, when it reaches
load, if it matches the load then Chain is set to the chain operand of the
load.

However, if the matching code that follows this fails, isel moves on to the
next pattern but it does not restore Chain to the chain operand of the store.
So when it tries to match the next store / op / load pattern it would fail on
the Chain == load.getOperand(0) test.

The solution is for each chain operand to get a unique name. e.g. Chain10.

llvm-svn: 25931
 2006-02-03 06:22:41 +00:00
Chris Lattner a23b04acdb remove some target-indep and implemented notes 
llvm-svn: 25930
 2006-02-03 06:22:11 +00:00
Chris Lattner d1aaee03ce target independent notes 
llvm-svn: 25929
 2006-02-03 06:21:43 +00:00