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60 Commits

Author SHA1 Message Date
Chris Lattner
1d77a0ff88 Print physreg names symbolically in dumps 
llvm-svn: 29805
 2006-08-21 23:03:54 +00:00
Chris Lattner
213159a6ee Print debug info as: 
*** Register mapping ***
  reg 1024 -> %reg1028
  reg 1026 -> EAX
  reg 1027 -> %reg1028

instead of:

*** Register mapping ***
  reg 1024 -> reg 1028
  reg 1026 -> reg 15
  reg 1027 -> reg 1028

llvm-svn: 29803
 2006-08-21 22:56:29 +00:00
Jim Laskey
4b49c23571 Eliminate data relocations by using NULL instead of global empty list. 
llvm-svn: 29250
 2006-07-21 21:15:20 +00:00
Andrew Lenharth
c496b418b5 Reduce number of exported symbols 
llvm-svn: 29220
 2006-07-20 17:28:38 +00:00
Chris Lattner
aa2372562e Patches to make the LLVM sources more -pedantic clean. Patch provided 
by Anton Korobeynikov!  This is a step towards closing PR786.

llvm-svn: 28447
 2006-05-24 17:04:05 +00:00
Evan Cheng
6a6886185b Backing out fix for PR770. Need to re-apply it after live range splitting is possible 
llvm-svn: 28236
 2006-05-12 06:06:34 +00:00
Evan Cheng
47926aff96 Set weight of zero length intervals to infinite to prevent them from being 
spilled.

llvm-svn: 28220
 2006-05-11 07:29:24 +00:00
Evan Cheng
ae45020720 PR 770 - permit coallescing of registers in subset register classes. 
llvm-svn: 28197
 2006-05-09 06:37:48 +00:00
Chris Lattner
10d6341618 Move some methods out of MachineInstr into MachineOperand 
llvm-svn: 28102
 2006-05-04 17:52:23 +00:00
Chris Lattner
4dee67c2cd Remove previous patch, which wasn't quite right. 
llvm-svn: 28039
 2006-05-01 21:16:03 +00:00
Evan Cheng
f71f0f2e0b Local spiller kills a store if the folded restore is turned into a copy. 
But this is incorrect if the spilled value live range extends beyond the
current BB.
It is currently controlled by a temporary option -spiller-check-liveout.

llvm-svn: 28024
 2006-04-30 08:41:47 +00:00
Chris Lattner
de02d7727f Add explicit #includes of <iostream> 
llvm-svn: 25515
 2006-01-22 23:41:00 +00:00
Chris Lattner
b05fce676f Minor cleanup, no functionality change for current targets 
llvm-svn: 25173
 2006-01-10 05:41:59 +00:00
Chris Lattner
b723c33614 Change a variable from being an iterator to a raw MachineInstr*, to make 
GDB use tolerable

llvm-svn: 25064
 2006-01-03 07:41:37 +00:00
Chris Lattner
3c7974aade Fix some spello's pointed out by Gabor Greif 
llvm-svn: 24019
 2005-10-26 18:41:41 +00:00
Chris Lattner
e95b5745c0 Make the coallescer a bit smarter, allowing it to join more live ranges. 
For example, we can now join things like [0-30:0)[31-40:1)[52-59:2)
with [40:60:0) if the 52-59 range is defined by a copy from the 40-60 range.
The resultant range ends up being [0-30:0)[31-60:1).

This fires a lot through-out the test suite (e.g. shrinking bc from
19492 -> 18509 machineinstrs) though most gains are smaller (e.g. about
50 copies eliminated from crafty).

llvm-svn: 23866
 2005-10-21 06:49:50 +00:00
Chris Lattner
b1f8982ff0 Expose the LiveInterval interfaces as public headers. 
llvm-svn: 23400
 2005-09-21 04:19:09 +00:00
Chris Lattner
ce3662f2a2 remove debugging code *slaps head* 
llvm-svn: 23294
 2005-09-09 19:19:20 +00:00
Chris Lattner
c9053083eb When spilling a live range that is used multiple times by one instruction, 
only add a reload live range once for the instruction.  This is one step
towards fixing a regalloc pessimization that Nate notice, but is later undone
by the spiller (so no code is changed).

llvm-svn: 23293
 2005-09-09 19:17:47 +00:00
Chris Lattner
5d16dbd5bb Fix a bug that Tzu-Chien Chiu noticed: live interval analysis does NOT 
preserve livevar

llvm-svn: 23259
 2005-09-07 17:34:39 +00:00
Chris Lattner
7138f91424 Teach live intervals to not crash on dead livein regs 
llvm-svn: 23206
 2005-09-02 00:20:32 +00:00
Chris Lattner
774158239b Simplify this code by using higher-level LiveVariables methods 
llvm-svn: 22989
 2005-08-23 22:51:41 +00:00
Chris Lattner
96cbfbbeaf Fix debug info to not print out recently freed memory. 
llvm-svn: 22529
 2005-07-27 23:11:25 +00:00
Chris Lattner
9937713252 Print symbolic register names in debug dumps 
llvm-svn: 22528
 2005-07-27 23:03:38 +00:00
Chris Lattner
c08d786ba5 Print the symbolic register name in a register allocator debug dump. 
llvm-svn: 22002
 2005-05-14 05:34:15 +00:00
Chris Lattner
91caf1d039 allow a virtual register to be associated with live-in values. 
llvm-svn: 21927
 2005-05-13 07:08:07 +00:00
Misha Brukman
835702a094 Remove trailing whitespace 
llvm-svn: 21420
 2005-04-21 22:36:52 +00:00
Chris Lattner
1a44855f8f there is no need to remove this instruction, linscan does it already as it 
removes noop moves.

llvm-svn: 21183
 2005-04-09 16:24:20 +00:00
Chris Lattner
0b1681bce1 Adjust live intervals to support a livein set 
llvm-svn: 21182
 2005-04-09 16:17:50 +00:00
Chris Lattner
6f6ecad995 I didn't mean to check this in. :( 
llvm-svn: 20555
 2005-03-10 20:59:51 +00:00
Chris Lattner
76aa8e071b Allow the live interval analysis pass to be a bit more aggressive about 
numbering values in live ranges for physical registers.

The alpha backend currently generates code that looks like this:

  vreg = preg
...
  preg = vreg
  use preg
...
  preg = vreg
  use preg

etc.  Because vreg contains the value of preg coming in, each of the
copies back into preg contain that initial value as well.

In the case of the Alpha, this allows this testcase:

void "foo"(int %blah) {
        store int 5, int *%MyVar
        store int 12, int* %MyVar2
        ret void
}

to compile to:

foo:
        ldgp $29, 0($27)
        ldiq $0,5
        stl $0,MyVar
        ldiq $0,12
        stl $0,MyVar2
        ret $31,($26),1

instead of:

foo:
        ldgp $29, 0($27)
        bis $29,$29,$0
        ldiq $1,5
        bis $0,$0,$29
        stl $1,MyVar
        ldiq $1,12
        bis $0,$0,$29
        stl $1,MyVar2
        ret $31,($26),1

This does not seem to have any noticable effect on X86 code.

This fixes PR535.

llvm-svn: 20536
 2005-03-09 23:05:19 +00:00
Chris Lattner
e64ff1c4b2 Silence warnings from VS 
llvm-svn: 19386
 2005-01-08 19:55:00 +00:00
Reid Spencer
9083936835 For PR387:\ 
Make only one print method to avoid overloaded virtual warnings when \
compiled with -Woverloaded-virtual

llvm-svn: 18589
 2004-12-07 04:03:45 +00:00
Chris Lattner
b56cb729bd Reduce usage of MRegisterInfo::getRegClass 
llvm-svn: 17238
 2004-10-26 05:29:18 +00:00
Chris Lattner
111c3e827e Patch to support MSVC better, contributed by Morten Ofstad 
llvm-svn: 17215
 2004-10-25 18:40:47 +00:00
Chris Lattner
1905ae69c1 When a virtual register is folded into an instruction, keep track of whether 
it was a use, def, or both.  This allows us to be less pessimistic in our
analysis of them.  In practice, this doesn't make a big difference, but it
doesn't hurt either.

llvm-svn: 16632
 2004-10-01 23:15:36 +00:00
Chris Lattner
f06f4a7c68 Pretty print a bit nicer :) 
llvm-svn: 16628
 2004-10-01 19:01:39 +00:00
Chris Lattner
55c1402f25 There is no need to call MachineInstr::print directly, just send the MI& to an ostream. 
llvm-svn: 16613
 2004-09-30 16:10:45 +00:00
Chris Lattner
b0b707fc75 * Wrap some comments to 80 cols 
* Add const_iterator stuff
* Add a print method, which means that I can now call dump() from the
  debugger.

llvm-svn: 16612
 2004-09-30 15:59:17 +00:00
Alkis Evlogimenos
213e6db9ce Grow the map on entry so that we don't crash if joinIntervals never 
runs (if coalescing is disabled for example).

llvm-svn: 16259
 2004-09-09 19:24:38 +00:00
Alkis Evlogimenos
adb2ce2962 Use a DenseMap for mapping reg->reg. This improves the LiveInterval 
analysis running time from 2.7869secs to 2.5226secs on 176.gcc.

llvm-svn: 16244
 2004-09-08 03:01:50 +00:00
Misha Brukman
14a2b4628d Order #includes alphabetically, local .h files first. 
llvm-svn: 16153
 2004-09-03 18:25:53 +00:00
Alkis Evlogimenos
a5c04ee50f Fixes to make LLVM compile with vc7.1. 
Patch contributed by Paolo Invernizzi!

llvm-svn: 16152
 2004-09-03 18:19:51 +00:00
Reid Spencer
7c16caa336 Changes For Bug 352 
Move include/Config and include/Support into include/llvm/Config,
include/llvm/ADT and include/llvm/Support. From here on out, all LLVM
public header files must be under include/llvm/.

llvm-svn: 16137
 2004-09-01 22:55:40 +00:00
Alkis Evlogimenos
b84f0be5b1 Minor code clarity changes. 
llvm-svn: 16123
 2004-08-31 17:39:15 +00:00
Alkis Evlogimenos
8c67a3003e Only update LiveVariables if it is available. addIntervalsForSpills 
runs after the initial run of the live interval analysis.

llvm-svn: 16075
 2004-08-27 18:59:22 +00:00
Alkis Evlogimenos
542ac1cba7 Use newly added API in MRegisterInfo. 
llvm-svn: 16060
 2004-08-26 22:22:38 +00:00
Chris Lattner
d8b5be4726 Fix a bug in a previous checkin of mine, correcting 
Regression.CodeGen.Generic.2004-04-09-SameValueCoalescing.llx and the
code size problem.

This bug prevented us from doing most register coallesces.

llvm-svn: 16031
 2004-08-24 17:48:29 +00:00
Chris Lattner
5943c5078c Reduce usage of MRegisterInfo::getRegClass 
llvm-svn: 15784
 2004-08-15 22:23:09 +00:00
Alkis Evlogimenos
4242241a69 Clean up whitespace. 
llvm-svn: 15490
 2004-08-04 09:46:56 +00:00