Chris Lattner
66029d909b
Fix UnitTests/2005-05-12-Int64ToFP.c with llc-beta. In particular, do not
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allow it to go into an infinite loop, filling up the disk!
llvm-svn: 30494
2006-09-19 18:02:01 +00:00
Chris Lattner
d269774664
Non-allocatable physregs can be killed and dead, but don't treat them as
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safe for later allocation. This fixes McCat/18-imp with llc-beta.
llvm-svn: 30204
2006-09-08 20:21:31 +00:00
Chris Lattner
a531dd1879
This fixes Benchmarks/Prolangs-C/unix-smail
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llvm-svn: 30198
2006-09-08 19:11:11 +00:00
Chris Lattner
16e4937a31
Fix a bunch of llc-beta failures on x86 yesterday. Don't allow selection
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of unallocatable registers, just because an alias is allocatable. We were
picking registers like SIL just because ESI was being used.
llvm-svn: 30197
2006-09-08 19:03:30 +00:00
Evan Cheng
82fabe541b
Only call isUse/isDef on register operands
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llvm-svn: 30122
2006-09-05 20:32:06 +00:00
Chris Lattner
ff7657a869
Fix Regression/CodeGen/Generic/2006-09-02-LocalAllocCrash.ll on X86.
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Just because an alias of a register is available, it doesn't mean that we
can arbitrarily evict the register.
llvm-svn: 30064
2006-09-03 07:15:37 +00:00
Chris Lattner
2a9da0da7b
When deleting a machine instruction, make sure to remove it from the
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livevariables information. This fixes several regalloc=local failures on x86
llvm-svn: 30062
2006-09-03 00:06:08 +00:00
Chris Lattner
33bd5dcfb7
s|llvm/Support/Visibility.h|llvm/Support/Compiler.h|
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llvm-svn: 29911
2006-08-27 12:54:02 +00:00
Jim Laskey
6d121090d3
Final polish on machine pass registries.
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llvm-svn: 29471
2006-08-02 12:30:23 +00:00
Jim Laskey
b92b14f422
Introducing plugable register allocators and instruction schedulers.
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llvm-svn: 29434
2006-08-01 14:21:23 +00:00
Jim Laskey
085a8477a7
Eliminate data relocations by using NULL instead of global empty list.
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llvm-svn: 29250
2006-07-21 21:15:20 +00:00
Andrew Lenharth
bf871a2ad5
80 cols
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llvm-svn: 29221
2006-07-20 17:43:27 +00:00
Andrew Lenharth
c1074954fb
Reduce number of exported symbols
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llvm-svn: 29220
2006-07-20 17:28:38 +00:00
Chris Lattner
496bd3fbf6
Use hidden visibility to make symbols in an anonymous namespace get
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dropped. This shrinks libllvmgcc.dylib another 67K
llvm-svn: 28975
2006-06-28 23:17:24 +00:00
Chris Lattner
48823987ff
Teach the local allocator to know that live-in values (e.g. arguments) are
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live at function entry. This prevents it from using arg registers for other
purposes before the arguments are used.
llvm-svn: 28809
2006-06-15 22:21:53 +00:00
Chris Lattner
685568510a
Move some methods out of MachineInstr into MachineOperand
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llvm-svn: 28102
2006-05-04 17:52:23 +00:00
Chris Lattner
aafc339b4e
Add explicit #includes of <iostream>
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llvm-svn: 25515
2006-01-22 23:41:00 +00:00
Chris Lattner
82596272da
Nuke noop copies.
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llvm-svn: 24258
2005-11-09 18:22:42 +00:00
Chris Lattner
90e4c8a2a7
Disable some overly-aggressive checking code. This speeds up the local
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allocator from 23s to 11s on kc++ in debug mode.
llvm-svn: 24255
2005-11-09 05:28:45 +00:00
Chris Lattner
a9cd99bbc1
Change this code ot pass register classes into the stack slot spiller/reloader
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code. PrologEpilogInserter hasn't been updated yet though, so targets cannot
use this info.
llvm-svn: 23536
2005-09-30 01:29:00 +00:00
Chris Lattner
7e3441972b
adjust to new live variables interface
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llvm-svn: 22992
2005-08-23 23:42:17 +00:00
Misha Brukman
774e55c446
Remove trailing whitespace
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llvm-svn: 21420
2005-04-21 22:36:52 +00:00
Chris Lattner
cc22be2981
Update this pass to set PhysRegsUsed info in MachineFunction.
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llvm-svn: 19792
2005-01-23 22:51:56 +00:00
Chris Lattner
a361504a90
Clean up the MachineBasicBlock.h file, percolating #includes into this file.
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Patch contributed by Morten Ofstad
llvm-svn: 17251
2004-10-26 15:35:58 +00:00
Reid Spencer
c4abcbefb1
Changes For Bug 352
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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
Chris Lattner
0e350557bf
Reduce usage of MRegisterInfo::getRegClass
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llvm-svn: 15784
2004-08-15 22:23:09 +00:00
Chris Lattner
450d93b2ff
Nuke ifdef'd out code
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llvm-svn: 15777
2004-08-15 22:03:57 +00:00
Chris Lattner
463d46f17a
Stop using CreateStackObject(RegClass*)
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llvm-svn: 15775
2004-08-15 22:02:22 +00:00
Chris Lattner
e58190f5f6
These methods no longer take a TargetRegisterClass* operand.
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llvm-svn: 15774
2004-08-15 21:56:44 +00:00
Brian Gaeke
f18cdca667
These files don't need to include <iostream> since they include "Support/Debug.h".
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llvm-svn: 15089
2004-07-21 20:50:33 +00:00
Chris Lattner
1b8f37597d
Fix a recent regression in Applications/sgefa that Alkis pointed out to me.
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The vector may actually be empty if the register that we are marking as
recently used is not actually allocatable. This happens for physical registers
that are not allocatable, like the ST(x) registers on X86.
llvm-svn: 14195
2004-06-16 06:57:29 +00:00
Chris Lattner
0046ea7105
Adjust to new TargetMachine interface
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llvm-svn: 13956
2004-06-02 05:57:12 +00:00
Alkis Evlogimenos
ff9482b664
Change MRegisterInfo::foldMemoryOperand to return the folded
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instruction to make the API more flexible.
llvm-svn: 12386
2004-03-14 07:19:51 +00:00
Alkis Evlogimenos
b15631fcfa
Uncomment assertions that register# != 0 on calls to
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MRegisterInfo::is{Physical,Virtual}Register. Apply appropriate fixes
to relevant files.
llvm-svn: 11882
2004-02-26 22:00:20 +00:00
Chris Lattner
ac94c441b6
No need to clear the map here, it will always be empty
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llvm-svn: 11868
2004-02-26 05:21:21 +00:00
Alkis Evlogimenos
f1516015af
Add DenseMap template and actually use it for for mapping virtual regs
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to objects.
llvm-svn: 11840
2004-02-25 21:55:45 +00:00
Alkis Evlogimenos
9b103024ef
Refactor rewinding code for finding the first terminator of a basic
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block into MachineBasicBlock::getFirstTerminator().
This also fixes a bug in the implementation of the above in both
RegAllocLocal and InstrSched, where instructions where added after the
terminator if the basic block's only instruction was a terminator (it
shouldn't matter for RegAllocLocal since this case never occurs in
practice).
llvm-svn: 11748
2004-02-23 18:14:48 +00:00
Chris Lattner
5485375e5d
Another bug fix for empty MBB's
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llvm-svn: 11716
2004-02-22 19:37:31 +00:00
Chris Lattner
56a7886c8a
Fix a bug where we were implicitly assuming that there would be at least
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one terminator instruction in each basic block.
llvm-svn: 11714
2004-02-22 19:08:15 +00:00
Alkis Evlogimenos
e39c21cc93
Make 'fold' statistic's description the same in both allocators.
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llvm-svn: 11687
2004-02-21 18:07:33 +00:00
Chris Lattner
c37073f249
Fix problem fusing spill code into instructions: we didn't update the live
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variable information to take into account the change of instruction
address.
llvm-svn: 11628
2004-02-19 18:34:02 +00:00
Alkis Evlogimenos
68f40cbfd3
Rename reloads/spills to loads/stores.
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llvm-svn: 11619
2004-02-19 06:19:09 +00:00
Chris Lattner
ea22a3de13
Remove the -disable-kill option. The register allocator is buggy with it,
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and it was only for debugging in the first place.
llvm-svn: 11557
2004-02-17 17:49:10 +00:00
Chris Lattner
a4e0020e54
Add support to the local allocator for fusing spill code into the instructions
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that need them. This is very useful on CISCy targets like the X86 because it
reduces the total spill pressure, and makes better use of it's (large)
instruction set. Though the X86 backend doesn't know how to rewrite many
instructions yet, this already makes a substantial difference on 176.gcc for
example:
Before:
Time:
8.0099 ( 31.2%) 0.0100 ( 12.5%) 8.0199 ( 31.2%) 7.7186 ( 30.0%) Local Register Allocator
Code quality:
734559 asm-printer - Number of machine instrs printed
111395 ra-local - Number of registers reloaded
79902 ra-local - Number of registers spilled
231554 x86-peephole - Number of peephole optimization performed
After:
Time:
7.8700 ( 30.6%) 0.0099 ( 19.9%) 7.8800 ( 30.6%) 7.7892 ( 30.2%) Local Register Allocator
Code quality:
733083 asm-printer - Number of machine instrs printed
2379 ra-local - Number of reloads fused into instructions
109046 ra-local - Number of registers reloaded
79881 ra-local - Number of registers spilled
230658 x86-peephole - Number of peephole optimization performed
So by fusing 2300 instructions, we reduced the static number of instructions
by 1500, and reduces the number of peepholes (and thus the work) by about 900.
This also clearly reduces the number of reload/spill instructions that are
emitted.
llvm-svn: 11542
2004-02-17 08:09:40 +00:00
Chris Lattner
f93308ec17
Fix a bug in my previous refactoring change... arg!
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llvm-svn: 11535
2004-02-17 07:02:17 +00:00
Chris Lattner
bb0cfb0429
Once we have a way to fold spill code reloads into instructions, we have a way to use it. :)
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llvm-svn: 11517
2004-02-17 04:08:37 +00:00
Chris Lattner
7b3342d814
Refactor code a bit. No functionality changes, though the comment hints at things to come.
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llvm-svn: 11515
2004-02-17 03:57:19 +00:00
Alkis Evlogimenos
84318d7bb6
Make dense maps keyed on physical registers smallerusing
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MRegisterInfo::getNumRegs() instead of
MRegisterInfo::FirstVirtualRegister.
Also use MRegisterInfo::is{Physical,Virtual}Register where
appropriate.
llvm-svn: 11477
2004-02-15 21:37:17 +00:00
Alkis Evlogimenos
6d6ab846af
Remove getAllocatedRegNum(). Use getReg() instead.
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llvm-svn: 11393
2004-02-13 21:01:20 +00:00
Alkis Evlogimenos
c1ef192d44
Use getNumVirtualRegs().
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Whitespace cleanups.
llvm-svn: 11389
2004-02-13 18:20:47 +00:00