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Author SHA1 Message Date
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
Chris Lattner
77b13b351b make getnext/getprev accessors private. 
llvm-svn: 36209
 2007-04-17 18:30:41 +00:00
Dan Gohman
a7e1f3c85b Spell doFinalization right, so that it is a proper virtual override and 
gets called.

llvm-svn: 36208
 2007-04-17 18:21:36 +00:00
Chris Lattner
3bc0ec8776 make next/prev accessors private 
llvm-svn: 36207
 2007-04-17 18:16:39 +00:00
Chris Lattner
23ea4ce93b bool on darwin/ppc is 4 bytes. 
llvm-svn: 36206
 2007-04-17 18:15:04 +00:00
Chris Lattner
8e28e7654d remove use of BasicBlock::getNext 
llvm-svn: 36205
 2007-04-17 18:09:47 +00:00
Chris Lattner
917d8832a1 Instruction:: Next/Prev accessors are now private 
llvm-svn: 36204
 2007-04-17 18:03:55 +00:00
Chris Lattner
af5c203dbd add a note 
llvm-svn: 36203
 2007-04-17 18:03:00 +00:00
Chris Lattner
d503b61318 remove use of BasicBlock::getNext 
llvm-svn: 36202
 2007-04-17 17:54:12 +00:00
Chris Lattner
e4323f863a Remove use of Instruction::getNext 
llvm-svn: 36201
 2007-04-17 17:52:45 +00:00
Chris Lattner
e5d747e0be eliminate use of Instruction::getNext() 
llvm-svn: 36200
 2007-04-17 17:51:03 +00:00
Chris Lattner
7b6a5d7956 remove use of Instruction::getNext 
llvm-svn: 36199
 2007-04-17 17:47:54 +00:00
Chris Lattner
058a0c6977 eliminate use of Instruction::getPrev(). Patch by Gabor Greif in 2005. 
llvm-svn: 36198
 2007-04-17 17:38:28 +00:00
Chris Lattner
09139c7951 eliminate a use of Instruction::getPrev(), patch by Gabor Greif in 2005. 
llvm-svn: 36197
 2007-04-17 17:36:12 +00:00
Chris Lattner
c7109ece27 rename X86FunctionInfo to X86MachineFunctionInfo to match the header file 
it is defined in.

llvm-svn: 36196
 2007-04-17 17:21:52 +00:00
Anton Korobeynikov
9bc4b792bf Implemented correct stack probing on mingw/cygwin for dynamic alloca's. 
Also, fixed static case in presence of eax livin. This fixes PR331

PS: Why don't we still have push/pop instructions? :)
llvm-svn: 36195
 2007-04-17 09:20:00 +00:00
Jeff Cohen
92a09fc556 Make it work on 64-bit systems. 
llvm-svn: 36194
 2007-04-17 05:48:35 +00:00
Jeff Cohen
5780312029 Fix build breakage on 64-bit systems. 
llvm-svn: 36193
 2007-04-17 05:33:04 +00:00
Chris Lattner
db7de8e497 merge several fields in GlobalValue to use the same word, move CallingConv 
field into SubclassData in Value.  This shrinks GlobalVAlue from 48->40
bytes, Function from 88->76, and GlobalVariable from 76->68.  This trims
4640 bytes off my testcase, reading a bc file without materializing any
functions.

llvm-svn: 36192
 2007-04-17 04:31:29 +00:00
Andrew Lenharth
c894d4e3ce Use this nifty Constraints thing and fix the inverted conditional moves 
llvm-svn: 36191
 2007-04-17 04:07:59 +00:00
Andrew Lenharth
38746c38c6 this is fixed 
llvm-svn: 36190
 2007-04-17 04:07:27 +00:00
Chris Lattner
cc56e116fe The (negative) offset from a SymbolTableListTraits-using ilist to its container 
object is always constant.  As such, evaluate it at compile time instead of storing
it as an ivar in SymbolTableListTraits.  This shrinks every SymbolTableListTraits
ilist by a word, shrinking BasicBlock from 44->40 bytes, Function from 96->88 bytes,
and Module from 60->52 bytes.

llvm-svn: 36189
 2007-04-17 04:04:14 +00:00
Chris Lattner
71a21677f4 Refactor SymbolTableListTraits to only have a single pointer in it, instead 
of two.  This shrinkifies Function by 8 bytes (104->96) and Module by 8
bytes (68->60).  On a testcase of mine, this reduces the memory used to
read a module header from 565680b to 561024, a little over 4K.

llvm-svn: 36188
 2007-04-17 03:26:42 +00:00
Chris Lattner
3c118ffaf7 urr, yeah. 
llvm-svn: 36187
 2007-04-17 02:04:39 +00:00
Devang Patel
54aa295162 Remove "ModulePasses requiring FunctionPasses" from the list of future 
extensions.

llvm-svn: 36186
 2007-04-17 00:17:11 +00:00
Chris Lattner
be225f5300 SSE4 is apparently public now. 
llvm-svn: 36185
 2007-04-17 00:02:37 +00:00
Devang Patel
ca917ef212 Add PR number for reference. 
llvm-svn: 36184
 2007-04-16 23:52:37 +00:00
Reid Spencer
67ab398ba3 Make long line fit in 80 cols. 
llvm-svn: 36183
 2007-04-16 23:32:28 +00:00
Devang Patel
7d868316fd Fix 
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20070416/047888.html

llvm-svn: 36182
 2007-04-16 23:03:45 +00:00
Devang Patel
e155e1ef8c New test case. 
llvm-svn: 36181
 2007-04-16 23:02:22 +00:00
Reid Spencer
b640dc70f9 Fix problems in the PartSet lowering having to do with incorrect bit width. 
llvm-svn: 36180
 2007-04-16 22:21:14 +00:00
Reid Spencer
226017813d Regenerate 
llvm-svn: 36179
 2007-04-16 22:02:23 +00:00