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31813 Commits

Author SHA1 Message Date
Owen Anderson 2da606c757 Move more passes to using ETForest instead of DominatorTree. 
llvm-svn: 36271
 2007-04-20 06:27:13 +00:00
Owen Anderson 7a5136d8c5 Add null checks and const-ify these accessors. 
llvm-svn: 36270
 2007-04-20 05:44:16 +00:00
Christopher Lamb aac115a8e5 Test check in 
llvm-svn: 36269
 2007-04-20 05:05:24 +00:00
Chris Lattner 8cc95f24a7 remove cruft 
llvm-svn: 36268
 2007-04-20 04:45:58 +00:00
Chris Lattner bc43e8d0b3 Fix a very strange assertion message, patch by Christopher Lamb 
CVS: ----------------------------------------------------------------------

llvm-svn: 36267
 2007-04-20 03:27:36 +00:00
Evan Cheng b76ba096fe Fix test. 
llvm-svn: 36266
 2007-04-20 00:45:36 +00:00
Jeff Cohen 6c673ac01c Make Microsoft assembler and linker happy. 
llvm-svn: 36265
 2007-04-20 00:33:54 +00:00
Chris Lattner 25e62eb63b Fix a message, patch by Christopher Lamb. 
llvm-svn: 36264
 2007-04-19 18:42:38 +00:00
Lauro Ramos Venancio 42cd7253b1 Fix a bug in getFrameRegister. 
Reported by Raul Herbster.

llvm-svn: 36262
 2007-04-19 14:09:38 +00:00
Zhou Sheng aafe4e216e Make use of ConstantInt::isZero instead of ConstantInt::isNullValue. 
llvm-svn: 36261
 2007-04-19 05:39:12 +00:00
Zhou Sheng 82fcf3cb5f Make the operations of APInt variables more efficient. 
llvm-svn: 36260
 2007-04-19 05:35:00 +00:00
Jeff Cohen 8cd3f3d7b4 Fix some VC++ warnings. 
llvm-svn: 36259
 2007-04-19 02:04:09 +00:00
Evan Cheng db9b65d67a 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 43a2fb747f Provide link. 
llvm-svn: 36257
 2007-04-18 17:26:14 +00:00
Dan Gohman 29845cd40d Fix the spelling of the prefetchnta instruction. 
llvm-svn: 36256
 2007-04-18 14:09:14 +00:00
Owen Anderson 9421f03959 Revert changes that caused breakage. 
llvm-svn: 36255
 2007-04-18 06:46:57 +00:00
Owen Anderson 9a6091dec1 Switch more uses of DominatorTree over to ETForest. 
llvm-svn: 36254
 2007-04-18 05:43:13 +00:00
Owen Anderson 550e8db9c7 Use ETForest instead of DominatorTree. 
llvm-svn: 36252
 2007-04-18 05:25:43 +00:00
Owen Anderson 9749c4744e 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 4c53d321aa VarInfo::UsedBlocks is no longer used. Remove. 
llvm-svn: 36250
 2007-04-18 05:04:38 +00:00
Owen Anderson fc40d446c9 Use ETForest instead of DominatorTree. 
llvm-svn: 36249
 2007-04-18 04:55:33 +00:00
Owen Anderson 08293fd6d1 Use new ETForest accessor. 
llvm-svn: 36248
 2007-04-18 04:46:35 +00:00
Owen Anderson f38f2f2394 Use ETForest instead of DominatorTree. 
llvm-svn: 36247
 2007-04-18 04:39:32 +00:00
Owen Anderson fae86bcbaa Add an accessor to make ETForest more useful. 
llvm-svn: 36246
 2007-04-18 04:38:39 +00:00
Chris Lattner f03c90bee6 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 bf14f20632 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 1af7b8451e new testcase 
llvm-svn: 36243
 2007-04-18 03:04:37 +00:00
Chris Lattner 15c1b820cc fix a pasto 
llvm-svn: 36242
 2007-04-18 03:01:40 +00:00
Evan Cheng 9fcce44e7f New crasher test case. 
llvm-svn: 36241
 2007-04-18 02:35:10 +00:00
Evan Cheng b408e8f11d 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 883ff07672 Cache DT[*SI] lookup. 
llvm-svn: 36239
 2007-04-18 01:19:55 +00:00
Chris Lattner 82738fe254 don't access argument list of prototypes 
llvm-svn: 36238
 2007-04-18 00:57:22 +00:00
Devang Patel 5976db0103 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 da48b7dcce New test. 
llvm-svn: 36235
 2007-04-18 00:51:43 +00:00
Chris Lattner 0d7265650d what's an & between friends? 
llvm-svn: 36234
 2007-04-18 00:43:05 +00:00
Evan Cheng a5a0c7c909 Increment use count of new virtuals created during PHI elimination. 
llvm-svn: 36233
 2007-04-18 00:36:11 +00:00
Chris Lattner 135a077c93 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 4fe9eb5052 new testcase 
llvm-svn: 36230
 2007-04-17 23:43:31 +00:00
Evan Cheng 5118226c6c Oops. Didn't mean to check in a quick hack. 
llvm-svn: 36227
 2007-04-17 23:33:39 +00:00
Chris Lattner 4aff52bf3d 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 598bc0d9a3 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 9a861a8550 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 0a8d14ce67 new testcase 
llvm-svn: 36220
 2007-04-17 21:12:26 +00:00
Duncan Sands 1ff58a45ae Use // not ; since this is C. 
llvm-svn: 36219
 2007-04-17 20:50:33 +00:00
Evan Cheng b881bdabd9 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 a9cde02ee3 New test case. 
llvm-svn: 36217
 2007-04-17 20:29:12 +00:00
Evan Cheng 57b5214d59 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 2f45bf31c5 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 8387cf1100 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 9b91d98a30 Add comment 
llvm-svn: 36213
 2007-04-17 19:34:00 +00:00