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198 Commits

Author SHA1 Message Date
Devang Patel
09f162ca6a Do not use typeinfo to identify pass in pass manager. 
llvm-svn: 36632
 2007-05-01 21:15:47 +00:00
Evan Cheng
4c53d321aa VarInfo::UsedBlocks is no longer used. Remove. 
llvm-svn: 36250
 2007-04-18 05:04:38 +00:00
Evan Cheng
5382426577 Keep UsedBlocks info accurate. 
llvm-svn: 35140
 2007-03-18 09:02:31 +00:00
Chris Lattner
aee775a6b7 Eliminate static ctors from Statistics 
llvm-svn: 32698
 2006-12-19 22:41:21 +00:00
Bill Wendling
355fc5ad50 Removed more <iostream> includes 
llvm-svn: 32321
 2006-12-07 20:28:15 +00:00
Chris Lattner
700b873130 Detemplatize the Statistic class. The only type it is instantiated with 
is 'unsigned'.

llvm-svn: 32279
 2006-12-06 17:46:33 +00:00
Evan Cheng
67fc141db5 Match TargetInstrInfo changes. 
llvm-svn: 32098
 2006-12-01 21:52:58 +00:00
Bill Wendling
787b77320f Use llvm streams instead of <iostream> 
llvm-svn: 31985
 2006-11-28 22:48:48 +00:00
Evan Cheng
1698c2999c Remove M_2_ADDR_FLAG. 
llvm-svn: 31583
 2006-11-09 02:22:54 +00:00
Evan Cheng
d8697deca3 Two-address instructions no longer have to be A := A op C. Now any pair of dest / src operands can be tied together. 
llvm-svn: 31363
 2006-11-01 23:06:55 +00:00
Chris Lattner
13a5dcddce Fix a long-standing wart in the code generator: two-address instruction lowering 
actually *removes* one of the operands, instead of just assigning both operands
the same register.  This make reasoning about instructions unnecessarily complex,
because you need to know if you are before or after register allocation to match
up operand #'s with the target description file.

Changing this also gets rid of a bunch of hacky code in various places.

This patch also includes changes to fold loads into cmp/test instructions in
the X86 backend, along with a significant simplification to the X86 spill
folding code.

llvm-svn: 30108
 2006-09-05 02:12:02 +00:00
Chris Lattner
3d27be1333 s|llvm/Support/Visibility.h|llvm/Support/Compiler.h| 
llvm-svn: 29911
 2006-08-27 12:54:02 +00:00
Andrew Lenharth
c496b418b5 Reduce number of exported symbols 
llvm-svn: 29220
 2006-07-20 17:28:38 +00:00
Chris Lattner
e097e6f7c7 Shave another 27K off libllvmgcc.dylib with visibility hidden 
llvm-svn: 28973
 2006-06-28 22:17:39 +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
Chris Lattner
10d6341618 Move some methods out of MachineInstr into MachineOperand 
llvm-svn: 28102
 2006-05-04 17:52:23 +00:00
Chris Lattner
de02d7727f Add explicit #includes of <iostream> 
llvm-svn: 25515
 2006-01-22 23:41:00 +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
Misha Brukman
835702a094 Remove trailing whitespace 
llvm-svn: 21420
 2005-04-21 22:36:52 +00:00
Chris Lattner
ea42c15da9 Use the TargetInstrInfo::commuteInstruction method to commute instructions 
instead of doing it manually.

llvm-svn: 19685
 2005-01-19 07:08:42 +00:00
Chris Lattner
9590870a0d Make the 2-address instruction lowering pass smarter in two ways: 
1. If we are two-addressing a commutable instruction and the LHS is not the
   last use of the variable, see if the instruction is the last use of the
   RHS.  If so, commute the instruction, allowing us to avoid a
   register-register copy in many cases for common instructions like ADD, OR,
   AND, etc on X86.
2. If #1 doesn't hold, and if this is an instruction that also existing in
   3-address form, promote the instruction to a 3-address instruction to
   avoid the register-register copy.  We can do this for several common
   instructions in X86, including ADDrr, INC, DEC, etc.

This patch implements test/Regression/CodeGen/X86/commute-two-addr.ll,
overlap-add.ll, and overlap-shift.ll when I check in the X86 support for it.

llvm-svn: 19245
 2005-01-02 02:34:12 +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
Chris Lattner
6199899483 The insertion method returns void now 
llvm-svn: 15779
 2004-08-15 22:14:31 +00:00
Misha Brukman
6dd644e017 Fix indentation and wrap code at 80 cols 
llvm-svn: 15107
 2004-07-22 15:26:23 +00:00
Chris Lattner
f2b976bdd5 Remove extraneous punctuation 
llvm-svn: 15098
 2004-07-22 05:51:56 +00:00
Chris Lattner
adbbc62f82 Minor cleanups 
llvm-svn: 15091
 2004-07-21 23:17:57 +00:00
Brian Gaeke
902dcf0729 These files don't need to include <iostream> since they include "Support/Debug.h". 
llvm-svn: 15089
 2004-07-21 20:50:33 +00:00
Chris Lattner
a74cf5a7d9 Simplify the interface to LiveVariables::addVirtualRegister(Killed|Dead) 
llvm-svn: 14997
 2004-07-19 06:55:21 +00:00
Tanya Lattner
23dbc8170c Made a fix so that you can print out MachineInstrs that belong to a MachineBasicBlock that is not yet attached to a MachineFunction. This change includes changing the third operand (TargetMachine) to a pointer for the MachineInstr::print function. 
llvm-svn: 14389
 2004-06-25 00:13:11 +00:00
Chris Lattner
2150542af9 Adjust to new TargetMachine interface 
llvm-svn: 13956
 2004-06-02 05:57:12 +00:00
Alkis Evlogimenos
26583db8b6 Beautify debug output. 
llvm-svn: 11573
 2004-02-18 00:35:06 +00:00
Alkis Evlogimenos
e27f33f00e This pass should not require phi elimination or live variable 
analysis. It should only preserve them and update LiveVariables if it
already ran.

llvm-svn: 11479
 2004-02-15 21:50:32 +00:00
Alkis Evlogimenos
5a92240270 Use newly added next() and prior() utility functions. 
llvm-svn: 11430
 2004-02-14 01:18:34 +00:00
Alkis Evlogimenos
8cdd0215bf Remove getAllocatedRegNum(). Use getReg() instead. 
llvm-svn: 11393
 2004-02-13 21:01:20 +00:00
Alkis Evlogimenos
80da865f77 Change MachineBasicBlock's vector of MachineInstr pointers into an 
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
Tanya Lattner
dd0c255d14 Added missing include. 
llvm-svn: 11129
 2004-02-05 05:04:39 +00:00
Alkis Evlogimenos
327426411e Modify the two address instruction pass to remove the duplicate 
operand of the instruction and thus simplify the register allocation.

llvm-svn: 11124
 2004-02-04 22:17:40 +00:00
Alkis Evlogimenos
74b26f77a3 Revert changes. Will implement this using a different set of primitives 
llvm-svn: 11091
 2004-02-02 23:08:58 +00:00
Alkis Evlogimenos
6471e66fbb Correctly update def/use information for modified machine operands. 
llvm-svn: 11087
 2004-02-02 21:56:40 +00:00
Chris Lattner
a2ef296994 Fix, correctly this time, the computation of the return value 
Fix a spello
Tighten up the assertion checking

No functionality changes.

llvm-svn: 11036
 2004-01-31 21:21:43 +00:00
Chris Lattner
626f431165 * Fix incorrect computation of the runOnMachineFunction return value 
* Turn a bunch of instance variables into automatic variables

llvm-svn: 11035
 2004-01-31 21:14:04 +00:00
Chris Lattner
d835aa6711 Remove unneeded #includes 
Move Passes.h (which defines the interface to this file) to the top.
Move statistics to the top of the file.
Add a comment

llvm-svn: 11034
 2004-01-31 21:07:15 +00:00
Alkis Evlogimenos
52a714b45b Make LiveVariables::HandlePhysRegUse and 
LiveVariables::HandlePhysRegDef private they use information that is
not in memory when LiveVariables finishes the analysis.

Also update the TwoAddressInstructionPass to not use this interface.

llvm-svn: 10755
 2004-01-11 09:18:45 +00:00
Chris Lattner
fc3d0598df fix warning 
llvm-svn: 10692
 2004-01-05 05:42:17 +00:00
Alkis Evlogimenos
08c5311729 Currently we cannot handle two-address instructions of the form: 
A = B op C where A == C, but this cannot really occur in practice
because of SSA form. Add an assert to check that just to be safe.

llvm-svn: 10682
 2004-01-05 02:25:45 +00:00
Alkis Evlogimenos
5e0e67173d Update description. 
llvm-svn: 10681
 2004-01-04 23:09:24 +00:00
Alkis Evlogimenos
7139090fd2 Remove TwoAddressInstruction from the public headers and add an ID 
instead, since this pass doesn't expose any state to its users.

llvm-svn: 10520
 2003-12-18 22:40:24 +00:00
Alkis Evlogimenos
725021cb6c Add TwoAddressInstructionPass to handle instructions that have two or 
more operands and the two first operands are constrained to be the
same. The pass takes an instruction of the form:

        a = b op c

and transforms it into:

        a = b
        a = a op c

and also preserves live variables.

llvm-svn: 10512
 2003-12-18 13:06:04 +00:00