c16847b157
Sometimes a MI can define a register as well as defining a super-register at the
...
same time. Do not mark the "smaller" def as dead.
llvm-svn: 41871
2007-09-11 22:34:47 +00:00
d8ded48468
Bugs: missing partial uses and redundant partial defs.
...
llvm-svn: 40688
2007-08-01 20:18:21 +00:00
147d9fa57d
Don't assume that only Uses can be kills. Defs are marked as kills initially
...
when there are no uses. This fixes a dangling-pointer bug, where pointers to
deleted instructions were not removed from kills lists. More info here:
http://lists.cs.uiuc.edu/pipermail/llvmdev/2007-July/009749.html
llvm-svn: 40131
2007-07-20 23:17:34 +00:00
f9ef70560e
Dead code.
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llvm-svn: 39979
2007-07-17 20:01:19 +00:00
e66f822ecc
Replace std::set with SmallPtrSet.
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llvm-svn: 37746
2007-06-27 05:23:00 +00:00
d8417d9199
Properly handle kills of a physical register which has sub-registers that are read by later instructions.
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llvm-svn: 37739
2007-06-26 21:03:35 +00:00
fc2377d4ed
When marking a register as being implicitly defined, make sure to clear its partial use info as well.
...
llvm-svn: 37046
2007-05-14 20:39:18 +00:00
9e17872c1d
Eliminate MarkVirtRegAliveInBlock recursion.
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llvm-svn: 36943
2007-05-08 19:00:00 +00:00
8c78a0bff0
Drop 'const'
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llvm-svn: 36662
2007-05-03 01:11:54 +00:00
e95c6ad802
Use 'static const char' instead of 'static const int'.
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Due to darwin gcc bug, one version of darwin linker coalesces
static const int, which defauts PassID based pass identification.
llvm-svn: 36652
2007-05-02 21:39:20 +00:00
09f162ca6a
Do not use typeinfo to identify pass in pass manager.
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llvm-svn: 36632
2007-05-01 21:15:47 +00:00
910c80851e
Rename findRegisterUseOperand to findRegisterUseOperandIdx to avoid confusion.
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llvm-svn: 36483
2007-04-26 19:00:32 +00:00
ed23a1387e
Minor bug.
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llvm-svn: 36473
2007-04-26 08:24:22 +00:00
43a17fe826
Be careful when to add implicit kill / dead operands. Don't add them during / post reg-allocation.
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llvm-svn: 36458
2007-04-26 01:40:09 +00:00
d4549c5527
Clean up.
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llvm-svn: 36449
2007-04-25 21:34:08 +00:00
0fbe14ab87
Data structure change to improve compile time (especially in debug mode).
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llvm-svn: 36447
2007-04-25 19:34:00 +00:00
7818c03c6b
Fix for PR1306.
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- A register def / use now implicitly affects sub-register liveness but does
not affect liveness information of super-registers.
- Def of a larger register (if followed by a use later) is treated as
read/mod/write of a smaller register.
llvm-svn: 36434
2007-04-25 07:30:23 +00:00
4c53d321aa
VarInfo::UsedBlocks is no longer used. Remove.
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llvm-svn: 36250
2007-04-18 05:04:38 +00:00
8387cf1100
Keep track of number of uses within the function per virtual register.
...
llvm-svn: 36214
2007-04-17 20:22:11 +00:00
f6f043332f
Track the BB's where each virtual register is used.
...
llvm-svn: 35135
2007-03-17 09:29:54 +00:00
df7949a8d0
If a virtual register is already marked alive in this block, that means it is
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alive in one of the successor block. Do not add it to the kill list.
llvm-svn: 35041
2007-03-09 09:48:56 +00:00
91b0790297
Avoid variable shadowing.
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llvm-svn: 35039
2007-03-09 06:02:17 +00:00
f7ed82da10
Re-apply my liveintervalanalysis changes. Now with PR1207 fixes.
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llvm-svn: 34428
2007-02-19 21:49:54 +00:00
da81bf4d3e
For PR1207:
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Revert patches that caused the problem. Evan, please investigate and reapply
when you've discovered the problem.
llvm-svn: 34399
2007-02-19 03:20:00 +00:00
ef932b067d
- Use MRegister::regsOverlap().
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- Allow LiveVariables to track liveness of more registers.
llvm-svn: 34379
2007-02-17 11:09:47 +00:00
b612316f20
Allow any MachineBasicBlock (not just the entry block) to have live-in physical
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registers. Make sure liveinterval analysis is correctly creating live ranges
for them.
llvm-svn: 34217
2007-02-13 01:30:55 +00:00
355fc5ad50
Removed more <iostream> includes
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llvm-svn: 32321
2006-12-07 20:28:15 +00:00
70ec52896e
Do away with kill / dead maps. Move kill / dead info onto MI's.
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llvm-svn: 31759
2006-11-15 20:51:59 +00:00
8c9c6d71ed
Add implicit def / use operands to MachineInstr.
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llvm-svn: 31633
2006-11-10 08:43:01 +00:00
de46e48420
For PR786:
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Turn on -Wunused and -Wno-unused-parameter. Clean up most of the resulting
fall out by removing unused variables. Remaining warnings have to do with
unused functions (I didn't want to delete code without review) and unused
variables in generated code. Maintainers should clean up the remaining
issues when they see them. All changes pass DejaGnu tests and Olden.
llvm-svn: 31380
2006-11-02 20:25:50 +00:00
984f0ce06b
Fix for PR929. The PHI nodes were being gone through for each instruction
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in a successor block for every block...resulting in some O(N^k) algorithm
which wasn't very good for performance. Calculating this information up
front and keeping it in a map made it much faster.
llvm-svn: 30697
2006-10-03 07:20:20 +00:00
2cb238320d
Only call isUse/isDef on register operands
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llvm-svn: 30118
2006-09-05 20:19:27 +00:00
f8f724a2b1
Move two methods out of line, make them work when the record for a machine
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instruction includes physregs.
llvm-svn: 30061
2006-09-03 00:05:09 +00:00
3c9b2420df
Eliminate RegisterAnalysis. RegisterPass now does all that is necessary.
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llvm-svn: 29921
2006-08-27 22:30:17 +00:00
4b49c23571
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
ee64b6b40f
Remove a bunch more dead V9 specific stuff
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llvm-svn: 28094
2006-05-04 01:26:39 +00:00
be45b5e948
Add a LiveVariables::VarInfo::dump method
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llvm-svn: 25080
2006-01-04 05:40:30 +00:00
2ea5c99eca
Add section switching to common code generator code. Add a couple of
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asserts.
llvm-svn: 24445
2005-11-21 07:06:27 +00:00
eeacce5a60
Implement LiveVariables.h change
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llvm-svn: 22994
2005-08-24 00:09:33 +00:00
469652752c
adjust to new live variables interface
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llvm-svn: 22992
2005-08-23 23:42:17 +00:00
91caf1d039
allow a virtual register to be associated with live-in values.
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llvm-svn: 21927
2005-05-13 07:08:07 +00:00
835702a094
Remove trailing whitespace
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llvm-svn: 21420
2005-04-21 22:36:52 +00:00
4c6ab01a20
Consider the livein/out set for a function, allowing targets to not have to
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use ugly imp_def/imp_uses for arguments and return values.
llvm-svn: 21180
2005-04-09 15:23:25 +00:00
1cffa73f2a
Just in case, handle something that is both a use and a def.
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llvm-svn: 19696
2005-01-19 17:11:51 +00:00
00c436824f
When an instruction moves, make sure to update the VarInfo::Kills list as
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well as all of teh other stuff in livevar. This fixes the compiler crash
on fourinarow last night.
llvm-svn: 19695
2005-01-19 17:09:15 +00:00
6180881673
Do not use variable sized arrays in C++, they are non-portable. Patch
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contributed by Morten Ofstad
llvm-svn: 17217
2004-10-25 18:44:14 +00:00
7c16caa336
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
6a099d439e
Give a better assertion if we see a use before a def.
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llvm-svn: 16135
2004-09-01 22:34:52 +00:00
c227d73e5f
Remove dead code.
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llvm-svn: 16077
2004-08-28 22:43:31 +00:00
2c69803b61
Use newly added API in MRegisterInfo and don't expose the allocatable
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register set anymore. Its users now use the MRegisterInfo API.
llvm-svn: 16061
2004-08-26 22:23:32 +00:00
aef6c2a350
There is no need to store the MBB along with the MI any more, we can now
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ask instructions for their parent.
llvm-svn: 14998
2004-07-19 07:04:55 +00:00
a74cf5a7d9
Simplify the interface to LiveVariables::addVirtualRegister(Killed|Dead)
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llvm-svn: 14997
2004-07-19 06:55:21 +00:00
5027de35ed
Remove the DefBlock element of VarInfo. DefBlock is always DefInst->getParent()
...
llvm-svn: 14996
2004-07-19 06:26:50 +00:00
d47909e00a
Add checks to ensure that there are no unreachable blocks in the function
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llvm-svn: 14725
2004-07-09 16:44:37 +00:00
c85535c8be
Now that MachineFunction/MachineBasicBlock keep a mapping of blocks to ID #'s
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use them instead of a local LiveVariables numbering
llvm-svn: 14523
2004-07-01 06:15:32 +00:00
6c375e4926
Start using MBB numbers directly instead of going through the live variables
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map.
llvm-svn: 14518
2004-07-01 04:29:47 +00:00
7c77fd50e7
Instead of building a private numbering of MBB's use brg's nifty auto-numbering.
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Also convert df_iterator -> df_ext_iterator for subsequent stuff I'm doing.
llvm-svn: 14517
2004-07-01 04:24:29 +00:00
7d11fbf971
Convert tabs to spaces.
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llvm-svn: 14373
2004-06-24 21:31:16 +00:00
2150542af9
Adjust to new TargetMachine interface
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llvm-svn: 13956
2004-06-02 05:57:12 +00:00
5eb8094c2d
Patch to fix PR337. Make sure to mark all aliased physical registers as used
...
when we see a read of a register. This is important in cases like:
AL = ...
AH = ...
= AX
The read of AX must make both the AL and AH defs live until the use.
llvm-svn: 13444
2004-05-10 05:12:43 +00:00
c49a9a5d76
Stop LiveVariables from using BasicBlocks as part of the mapping, instead
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use MachineBasicBlocks. To do this, we traverse the Machine CFG instead of
the LLVM CFG, which is also *MUCH* more efficient by having fewer levels of
indirections and mappings.
llvm-svn: 13301
2004-05-01 21:24:24 +00:00
a333b1382f
Correctly update LiveVariables when an instruction changes
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llvm-svn: 12561
2004-03-30 22:44:39 +00:00
604cc83933
Add an assert
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llvm-svn: 12010
2004-02-29 22:01:51 +00:00
61719d48d2
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
4c988391e1
Fix an iterator invalidation problem. :(
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llvm-svn: 11627
2004-02-19 18:32:29 +00:00
afa9d7eb85
Add method to update livevar when an instruction moves
...
llvm-svn: 11625
2004-02-19 18:28:02 +00:00
bbf53937a4
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
80da865f77
Change MachineBasicBlock's vector of MachineInstr pointers into an
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ilist of MachineInstr objects. This allows constant time removal and
insertion of MachineInstr instances from anywhere in each
MachineBasicBlock. It also allows for constant time splicing of
MachineInstrs into or out of MachineBasicBlocks.
llvm-svn: 11340
2004-02-12 02:27:10 +00:00
b21ec54e61
Add #include
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llvm-svn: 11285
2004-02-10 21:18:55 +00:00
5dd5be3ec3
Do not use MachineOperand::isVirtualRegister either!
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llvm-svn: 11283
2004-02-10 21:12:22 +00:00
373fba5c1d
Eliminate users of MachineOperand::isPhysicalRegister
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llvm-svn: 11278
2004-02-10 20:41:10 +00:00
bbd9a43d20
Ugh, perform an optimization that GCC should be able to do itself. This
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speeds up livevar from .48/.32s -> .45/.31s in LLC on perlbmk
llvm-svn: 11217
2004-02-09 01:43:23 +00:00
26407384ec
Only do stuff for the REAL number of physical registers we have, not 1024.
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This speeds up live variables a lot, from .60/.39s -> .47/.26s in LLC, for
the first/second pass respectively.
llvm-svn: 11216
2004-02-09 01:35:21 +00:00
c330b98c1c
Finegrainify namespacification, use new MRegisterInfo::isVirtualRegister
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method
llvm-svn: 11037
2004-01-31 21:27:19 +00:00
0770862334
Finegrainify namespacification
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Implement LiveVariables::getIndexMachineBasicBlock
llvm-svn: 11018
2004-01-30 22:08:53 +00:00
9d0c3d21c8
Remove unneeded check (with the recent change in live variables a use
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of a physical register is always dominated by a def).
llvm-svn: 10821
2004-01-13 21:16:25 +00:00
ebbd66c042
Correctly compute live variable information for physical registers
...
when an implicitely defined register is later used by an alias. For example:
call foo
%reg1024 = mov %AL
The call implicitely defines EAX but only AL is used. Before this fix
no information was available on AL. Now EAX and all its aliases except
AL get defined and die at the call instruction whereas AL lives to be
killed by the assignment.
llvm-svn: 10813
2004-01-13 06:24:30 +00:00
aaba4639f8
Change interface of MachineOperand as follows:
...
a) remove opIsUse(), opIsDefOnly(), opIsDefAndUse()
b) add isUse(), isDef()
c) rename opHiBits32() to isHiBits32(),
opLoBits32() to isLoBits32(),
opHiBits64() to isHiBits64(),
opLoBits64() to isLoBits64().
This results to much more readable code, for example compare
"op.opIsDef() || op.opIsDefAndUse()" to "op.isDef()" a pattern used
very often in the code.
llvm-svn: 10461
2003-12-14 13:24:17 +00:00
9bced9455a
Remove unecessary if statements when looping on ImplicitDefs.
...
llvm-svn: 10444
2003-12-13 01:20:58 +00:00
960707c335
Put all LLVM code into the llvm namespace, as per bug 109.
...
llvm-svn: 9903
2003-11-11 22:41:34 +00:00
482202a601
Added LLVM project notice to the top of every C++ source file.
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Header files will be on the way.
llvm-svn: 9298
2003-10-20 19:43:21 +00:00
5f1f337d95
Change MRegisterDesc::AliasSet, TargetInstrDescriptor::ImplicitDefs
...
and TargetInstrDescriptor::ImplicitUses to always point to a null
terminated array and never be null. So there is no need to check for
pointer validity when iterating over those sets. Code that looked
like:
if (const unsigned* AS = TID.ImplicitDefs) {
for (int i = 0; AS[i]; ++i) {
// use AS[i]
}
}
was changed to:
for (const unsigned* AS = TID.ImplicitDefs; *AS; ++AS) {
// use *AS
}
llvm-svn: 8960
2003-10-08 05:20:08 +00:00
7366fa1aa6
(1) Added special register class containing (for now) %fsr.
...
Fixed spilling of %fcc[0-3] which are part of %fsr.
(2) Moved some machine-independent reg-class code to class TargetRegInfo
from SparcReg{Class,}Info.
(3) Renamed MachienOperand::opIsDef to MachineOperand::opIsDefOnly()
and related functions and flags. Fixed several bugs where only
"isDef" was being checked, not "isDefAndUse".
llvm-svn: 6341
2003-05-27 00:05:23 +00:00
584bae4733
* Keep the BBMap around as long as the pass is live
...
* Change getVarInfo to take real virtual register numbers and offset them
itself. This has caused me so much grief, it's not even funny.
llvm-svn: 6115
2003-05-12 14:24:00 +00:00
5ab42e5739
Add a vector to keep track of which registers are allocatable. Remove FIXMEs
...
llvm-svn: 6015
2003-05-07 20:08:36 +00:00
9eb2172176
Re-add gross hack, it's still necessary. :(
...
llvm-svn: 6012
2003-05-06 21:44:54 +00:00
824698b891
Remove hideously nasty hack
...
llvm-svn: 6011
2003-05-06 21:32:39 +00:00
f641fd08bc
Minor cleanup
...
llvm-svn: 5976
2003-05-01 21:18:47 +00:00
b4d58d7f9e
Rename MachineInstrInfo -> TargetInstrInfo
...
llvm-svn: 5272
2003-01-14 22:00:31 +00:00
cab0b442f2
New files
...
llvm-svn: 5262
2003-01-13 20:01:16 +00:00
Evan Cheng