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5a20764bbb
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3387 Commits

Author SHA1 Message Date
Chris Lattner
5a20764bbb add a newline at end of file 
llvm-svn: 34735
 2007-02-28 06:42:11 +00:00
Evan Cheng
db591ecaa8 Make requiresRegisterScavenging determination on a per MachineFunction basis. 
llvm-svn: 34711
 2007-02-28 00:59:19 +00:00
Evan Cheng
ee2e5de4fb MRegisterInfo disowns RegScavenger. It's immutable. 
llvm-svn: 34706
 2007-02-28 00:17:36 +00:00
Evan Cheng
ec12bdd7ea Some more code clean up. 
llvm-svn: 34700
 2007-02-27 22:58:43 +00:00
Evan Cheng
2402ddad92 Oops. 
llvm-svn: 34698
 2007-02-27 22:10:52 +00:00
Evan Cheng
4c4e56df47 Let MRegisterInfo now owns RegScavenger. 
llvm-svn: 34691
 2007-02-27 21:10:33 +00:00
Evan Cheng
f03b87c1ff RegScavenger interface change to make it more flexible. 
llvm-svn: 34690
 2007-02-27 21:09:48 +00:00
Chris Lattner
11a1c2113c Minor refactoring of CC Lowering interfaces 
llvm-svn: 34656
 2007-02-27 05:13:54 +00:00
Chris Lattner
e34136f6d5 move CC Lowering stuff to its own public interface 
llvm-svn: 34655
 2007-02-27 04:43:02 +00:00
Evan Cheng
341fc2bf88 forward() should not increment internal iterator. Its client may insert instruction between now and next forward() call. 
llvm-svn: 34649
 2007-02-27 01:58:48 +00:00
Evan Cheng
0fd5788077 Joining an interval with a dead copy instruction. Shorten the live range to the last use. 
llvm-svn: 34645
 2007-02-26 21:37:37 +00:00
Chris Lattner
65de507797 Fold (sext (truncate x)) more aggressively, by avoiding creation of a 
sextinreg if not needed.   This is useful in two cases: before legalize,
it avoids creating a sextinreg that will be trivially removed.  After legalize
if the target doesn't support sextinreg, the trunc/sext would not have been
removed before.

llvm-svn: 34621
 2007-02-26 03:13:59 +00:00
Chris Lattner
38db1ad2ab track signedness of formal argument, though we have a fixme here. 
llvm-svn: 34620
 2007-02-26 02:56:58 +00:00
Jim Laskey
c2e9ceb475 Fix for PR1224. 
llvm-svn: 34610
 2007-02-25 21:43:59 +00:00
Chris Lattner
a9c561b9e6 optimize duplicate ValueMap lookups 
llvm-svn: 34599
 2007-02-25 18:40:32 +00:00
Evan Cheng
550798e5d5 A couple of more places where a register liveness has been extended and its last kill should be updated accordingly. 
llvm-svn: 34597
 2007-02-25 09:51:27 +00:00
Evan Cheng
13e48f975c Add an assertion. 
llvm-svn: 34596
 2007-02-25 09:47:31 +00:00
Evan Cheng
189678c421 Fix a couple of bugs related IsDead back propagation during coalescing. 
llvm-svn: 34595
 2007-02-25 09:46:31 +00:00
Evan Cheng
8f3e6bfeb3 If the liveinterval of the source instruction has been extended, remove the IsKill marker. 
llvm-svn: 34594
 2007-02-25 09:41:59 +00:00
Evan Cheng
9968353d64 Only add liveinterval to livein set if it isn't assigned a stack slot. 
llvm-svn: 34593
 2007-02-25 09:39:02 +00:00
Chris Lattner
e9c4c19b27 fold trivial token factor nodes. This allows us to compile 
test/CodeGen/X86/fp-stack-ret.ll into:

        movl 4(%esp), %eax
        fldl (%eax)
        ret

instead of:

        subl $12, %esp
        movl 16(%esp), %eax
        movsd (%eax), %xmm0
        movsd %xmm0, (%esp)
        fldl (%esp)
        addl $12, %esp
        ret

by eliminating a token factor that blocked a check.

llvm-svn: 34584
 2007-02-25 08:24:27 +00:00
Chris Lattner
b9f2992e38 initialize a instance variable 
llvm-svn: 34567
 2007-02-25 01:28:05 +00:00
Jim Laskey
53e71a9657 Deal with cases when MMI is not requested. 
llvm-svn: 34556
 2007-02-24 09:45:44 +00:00
Jim Laskey
10c6c6b46d Drop unused operand. 
llvm-svn: 34555
 2007-02-24 09:44:17 +00:00
Chris Lattner
6faf9e8e97 Fix CodeGen/Generic/2007-02-23-DAGCombine-Miscompile.ll and PR1219 
llvm-svn: 34551
 2007-02-24 02:09:29 +00:00
Evan Cheng
a68efe308e Reuse extends the liveness of a register. Transfer the kill to the operand that reuse it. 
llvm-svn: 34536
 2007-02-23 21:47:50 +00:00
Jim Laskey
dda4a7577f Handle improper cast. 
llvm-svn: 34535
 2007-02-23 21:45:01 +00:00
Evan Cheng
f2035d3916 Handle cases when joining live intervals of two virtual registers. 
llvm-svn: 34534
 2007-02-23 20:40:13 +00:00
Evan Cheng
bdc95679a3 Mark livein registers as being in used. 
llvm-svn: 34525
 2007-02-23 08:41:19 +00:00
Evan Cheng
b8a95dcdbf A spill kills the register being stored. But it is later being reused by spiller, its live range has to be extended. 
llvm-svn: 34517
 2007-02-23 01:13:26 +00:00
Evan Cheng
92429f4cca First potential client of register scavenger. 
llvm-svn: 34516
 2007-02-23 01:11:26 +00:00
Evan Cheng
387f1c2bdf Use findRegisterUseOperand to find a kill of particular register. 
llvm-svn: 34512
 2007-02-23 01:04:26 +00:00
Evan Cheng
f9ef2bfd8a Initial check in of register scavenger. Its only current functionality is tracking live registers per MBB. 
llvm-svn: 34511
 2007-02-23 01:01:19 +00:00
Evan Cheng
68e7fe47f6 Remove unnecessary isKill properties if a live range has been lengthened due to coalescing. 
llvm-svn: 34503
 2007-02-22 23:03:39 +00:00
Jim Laskey
322a2e8899 Update comment. 
llvm-svn: 34502
 2007-02-22 18:51:19 +00:00
Jim Laskey
1dd7563e22 Missing end of abbreviations - correction 
llvm-svn: 34501
 2007-02-22 18:48:52 +00:00
Jim Laskey
e177fd58b3 Missing end of abbreviations. 
llvm-svn: 34500
 2007-02-22 18:22:42 +00:00
Jim Laskey
f29366635a Need to init. 
llvm-svn: 34499
 2007-02-22 18:04:49 +00:00
Jim Laskey
8c79f0f892 Remove isAccessable. 
llvm-svn: 34497
 2007-02-22 16:39:03 +00:00
Jim Laskey
25993e18e6 Use exception flag. 
llvm-svn: 34496
 2007-02-22 16:22:15 +00:00
Jim Laskey
4990356454 Remove assertion. 
llvm-svn: 34494
 2007-02-22 16:12:17 +00:00
Jim Laskey
f6f24530c0 Tighten up error checking of args. 
llvm-svn: 34493
 2007-02-22 16:10:05 +00:00
Jim Laskey
dccc6d3a82 Handle lowering invoke to call correctly. 
llvm-svn: 34492
 2007-02-22 15:38:06 +00:00
Jim Laskey
655bea55fe Simplify lowering and selection of exception ops. 
llvm-svn: 34491
 2007-02-22 15:37:19 +00:00
Jim Laskey
58eaac9160 Selection and lowering for exception handling. 
llvm-svn: 34481
 2007-02-21 22:53:45 +00:00
Jim Laskey
a5ee0bbf17 Exception handling support. 
llvm-svn: 34479
 2007-02-21 22:48:45 +00:00
Jim Laskey
bce43df323 Add support for changes in DwarfWriter. 
llvm-svn: 34478
 2007-02-21 22:47:38 +00:00
Jim Laskey
b56b6a7042 Make branch folding behave in the presence of landing pads. 
llvm-svn: 34476
 2007-02-21 22:42:20 +00:00
Jim Laskey
1ac1a19f01 Allow for live in registers for eh landing pads. 
llvm-svn: 34475
 2007-02-21 22:41:17 +00:00
Jim Laskey
534bc5a9a3 Add structures used for collecting eh information. 
llvm-svn: 34473
 2007-02-21 22:38:31 +00:00