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Author SHA1 Message Date
Chris Lattner
876d03d9fa remove cruft 
llvm-svn: 36268
 2007-04-20 04:45:58 +00:00
Chris Lattner
2ba953680f Fix a very strange assertion message, patch by Christopher Lamb 
CVS: ----------------------------------------------------------------------

llvm-svn: 36267
 2007-04-20 03:27:36 +00:00
Evan Cheng
98d8512d2c Fix test. 
llvm-svn: 36266
 2007-04-20 00:45:36 +00:00
Jeff Cohen
a2a6fab9b5 Make Microsoft assembler and linker happy. 
llvm-svn: 36265
 2007-04-20 00:33:54 +00:00
Chris Lattner
4741020380 Fix a message, patch by Christopher Lamb. 
llvm-svn: 36264
 2007-04-19 18:42:38 +00:00
Lauro Ramos Venancio
5e0a3ef555 Fix a bug in getFrameRegister. 
Reported by Raul Herbster.

llvm-svn: 36262
 2007-04-19 14:09:38 +00:00
Zhou Sheng
9339daf407 Make use of ConstantInt::isZero instead of ConstantInt::isNullValue. 
llvm-svn: 36261
 2007-04-19 05:39:12 +00:00
Zhou Sheng
2cb77f2d6c Make the operations of APInt variables more efficient. 
llvm-svn: 36260
 2007-04-19 05:35:00 +00:00
Jeff Cohen
ac369daaa3 Fix some VC++ warnings. 
llvm-svn: 36259
 2007-04-19 02:04:09 +00:00
Evan Cheng
91e0637ed3 Revert Owen's last check-in. This is breaking Mac OS X / PPC llvm-gcc bootstrap. 
llvm-svn: 36258
 2007-04-18 22:39:00 +00:00
Jeff Cohen
225c0a0988 Provide link. 
llvm-svn: 36257
 2007-04-18 17:26:14 +00:00
Dan Gohman
bdb94669ba Fix the spelling of the prefetchnta instruction. 
llvm-svn: 36256
 2007-04-18 14:09:14 +00:00
Owen Anderson
16d1fd6ec8 Revert changes that caused breakage. 
llvm-svn: 36255
 2007-04-18 06:46:57 +00:00
Owen Anderson
781cbecd34 Switch more uses of DominatorTree over to ETForest. 
llvm-svn: 36254
 2007-04-18 05:43:13 +00:00
Owen Anderson
c3aa967684 Use ETForest instead of DominatorTree. 
llvm-svn: 36252
 2007-04-18 05:25:43 +00:00
Owen Anderson
c08636e1f0 Add accessor to get the blocks immediately dominated by a given block to ETForest. 
llvm-svn: 36251
 2007-04-18 05:25:09 +00:00
Evan Cheng
fbbdb92c9d VarInfo::UsedBlocks is no longer used. Remove. 
llvm-svn: 36250
 2007-04-18 05:04:38 +00:00
Owen Anderson
c07f29d206 Use ETForest instead of DominatorTree. 
llvm-svn: 36249
 2007-04-18 04:55:33 +00:00
Owen Anderson
d8bb3aca7b Use new ETForest accessor. 
llvm-svn: 36248
 2007-04-18 04:46:35 +00:00
Owen Anderson
909895b564 Use ETForest instead of DominatorTree. 
llvm-svn: 36247
 2007-04-18 04:39:32 +00:00
Owen Anderson
7553394275 Add an accessor to make ETForest more useful. 
llvm-svn: 36246
 2007-04-18 04:38:39 +00:00
Chris Lattner
ea3c945817 allow SRL to simplify its operands, as it doesn't demand all bits as input. 
llvm-svn: 36245
 2007-04-18 03:06:49 +00:00
Chris Lattner
4ce8602d58 When replacing a node in SimplifyDemandedBits, if the old node used any 
single-use nodes, they will be dead soon.  Make sure to remove them before
processing other nodes.  This implements CodeGen/X86/shl_elim.ll

llvm-svn: 36244
 2007-04-18 03:05:22 +00:00
Chris Lattner
4bb1ca868a new testcase 
llvm-svn: 36243
 2007-04-18 03:04:37 +00:00
Chris Lattner
639f807048 fix a pasto 
llvm-svn: 36242
 2007-04-18 03:01:40 +00:00
Evan Cheng
8080cdfd60 New crasher test case. 
llvm-svn: 36241
 2007-04-18 02:35:10 +00:00
Evan Cheng
1325999a14 Don't populate TryAgainList when coalescing only physical registers with virtual registers. 
llvm-svn: 36240
 2007-04-18 02:30:19 +00:00
Devang Patel
ffbee86b8e Cache DT[*SI] lookup. 
llvm-svn: 36239
 2007-04-18 01:19:55 +00:00
Chris Lattner
0ee78670b8 don't access argument list of prototypes 
llvm-svn: 36238
 2007-04-18 00:57:22 +00:00
Devang Patel
daba9f7064 Fix 
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20070416/047971.html

llvm-svn: 36236
 2007-04-18 00:53:01 +00:00
Devang Patel
158854c5fc New test. 
llvm-svn: 36235
 2007-04-18 00:51:43 +00:00
Chris Lattner
2411bc5af8 what's an & between friends? 
llvm-svn: 36234
 2007-04-18 00:43:05 +00:00
Evan Cheng
eecfac47a8 Increment use count of new virtuals created during PHI elimination. 
llvm-svn: 36233
 2007-04-18 00:36:11 +00:00
Chris Lattner
af290edea7 Be more careful when inserting reused instructions. This fixes CodeGen/Generic/2007-04-17-lsr-crash.ll 
llvm-svn: 36231
 2007-04-17 23:43:50 +00:00
Chris Lattner
14205a32d2 new testcase 
llvm-svn: 36230
 2007-04-17 23:43:31 +00:00
Evan Cheng
fe5856c4f3 Oops. Didn't mean to check in a quick hack. 
llvm-svn: 36227
 2007-04-17 23:33:39 +00:00
Chris Lattner
1677782ef0 Fix a bug in my previous patch, grabbing the shift amount width from the 
wrong operand.

llvm-svn: 36223
 2007-04-17 22:53:02 +00:00
Chris Lattner
87296c2580 dag combiner just got better at pruning bits. This fixes CodeGen/ARM/rev.ll 
llvm-svn: 36222
 2007-04-17 22:39:58 +00:00
Chris Lattner
b55496c660 Fold (x << c1)>> c2 into a single shift if the bits shifted out aren't used. 
This compiles:
int baz(long long a) { return (short)(((int)(a >>24)) >> 9); }

into:
_baz:
        srwi r2, r3, 1
        extsh r3, r2
        blr

on PPC, instead of:
_baz:
        slwi r2, r3, 8
        srwi r2, r2, 9
        extsh r3, r2
        blr

GCC produces:
_baz:
        srwi r10,r4,24
        insrwi r10,r3,24,0
        srawi r9,r3,24
        srawi r3,r10,9
        extsh r3,r3
        blr

This implements CodeGen/PowerPC/shl_elim.ll

llvm-svn: 36221
 2007-04-17 21:14:16 +00:00
Chris Lattner
c09249e3ba new testcase 
llvm-svn: 36220
 2007-04-17 21:12:26 +00:00
Duncan Sands
205a49abb3 Use // not ; since this is C. 
llvm-svn: 36219
 2007-04-17 20:50:33 +00:00
Evan Cheng
48352d7a71 Copy coalescing change to prevent a physical register from being pin to a 
long live interval that has low usage density.
1. Change order of coalescing to join physical registers with virtual
   registers first before virtual register intervals become too long.
2. Check size and usage density to determine if it's worthwhile to join.
3. If joining is aborted, assign virtual register live interval allocation
   preference field to the physical register.
4. Register allocator should try to allocate to the preferred register
   first (if available) to create identify moves that can be eliminated.

llvm-svn: 36218
 2007-04-17 20:32:26 +00:00
Devang Patel
e91576f1fd New test case. 
llvm-svn: 36217
 2007-04-17 20:29:12 +00:00
Evan Cheng
c5d2df366a Add a register allocation preference field; add a method to compute size of a live interval. 
llvm-svn: 36216
 2007-04-17 20:25:11 +00:00
Evan Cheng
023342b277 Change getAllocatableSet() so it returns allocatable registers for a specific register class. 
llvm-svn: 36215
 2007-04-17 20:23:34 +00:00
Evan Cheng
94e0223e55 Keep track of number of uses within the function per virtual register. 
llvm-svn: 36214
 2007-04-17 20:22:11 +00:00
Anton Korobeynikov
60de2ce283 Add comment 
llvm-svn: 36213
 2007-04-17 19:34:00 +00:00
Chris Lattner
9ad682ad80 SIGN_EXTEND_INREG does not demand its top bits. Give SimplifyDemandedBits 
a chance to hack on it.  This compiles:

int baz(long long a) { return (short)(((int)(a >>24)) >> 9); }

into:
_baz:
        slwi r2, r3, 8
        srwi r2, r2, 9
        extsh r3, r2
        blr

instead of:

_baz:
        srwi r2, r4, 24
        rlwimi r2, r3, 8, 0, 23
        srwi r2, r2, 9
        extsh r3, r2
        blr

This implements CodeGen/PowerPC/sign_ext_inreg1.ll

llvm-svn: 36212
 2007-04-17 19:03:21 +00:00
Chris Lattner
12ffa2d85a new testcase 
llvm-svn: 36211
 2007-04-17 19:03:02 +00:00
Chris Lattner
4a83860eea Commit an patch from Gabor Greif in Mar 2005. This eliminates the tail 
pointer from ilist, storing it in the prev pointer of the first node in the
list instead.

This shrinks ilist from 8 to 4 bytes, BasicBlock from 40->36 bytes, Function
from 76->68 bytes, Module from 52->44 bytes.

llvm-svn: 36210
 2007-04-17 18:41:42 +00:00