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Author SHA1 Message Date
Alkis Evlogimenos
9bb0ad1a37 Fix bug in reserved registers. DH actually aliases DX and EDX which 
are not reserved registers.

llvm-svn: 10514
 2003-12-18 13:12:18 +00:00
Alkis Evlogimenos
48d20cb328 Modify local register allocator to use the two-address instruction pass. 
llvm-svn: 10513
 2003-12-18 13:08:52 +00:00
Alkis Evlogimenos
90aeecae42 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
Alkis Evlogimenos
befef566f6 Rename LiveIntervals::expired() to LiveIntervals::expiredAt(). 
llvm-svn: 10511
 2003-12-18 08:56:11 +00:00
Alkis Evlogimenos
382bfbffeb When a variable is killed and redifined in a basic block only one 
killing instruction is tracked. This causes the LiveIntervals to
create bogus intervals. The workaound is to add a range to the
interval from the redefinition to the end of the basic block.

llvm-svn: 10510
 2003-12-18 08:53:43 +00:00
Alkis Evlogimenos
8e2fcc7d79 Handle multiple virtual register definitions gracefully. 
Move some of the longer LiveIntervals::Interval method out of the
header and add debug information to them. Fix bug and simplify range
merging code.

llvm-svn: 10509
 2003-12-18 08:48:48 +00:00
Chris Lattner
417d156218 add boog 
llvm-svn: 10508
 2003-12-18 08:16:25 +00:00
Chris Lattner
17122cbe7b When we delete instructions from the loop, make sure to remove them from the 
AliasSetTracker as well.

llvm-svn: 10507
 2003-12-18 08:12:32 +00:00
Chris Lattner
457dd0b6c7 Add a new AliassetTracker::remove method. Because we need to be able to remove 
a pointer from an AliasSet, maintain the pointer values on a doubly linked
list instead of a singly linked list, to permit efficient removal from the
middle of the list.

llvm-svn: 10506
 2003-12-18 08:11:56 +00:00
Chris Lattner
754c9b8b69 Check in patch that Reid submitted 
llvm-svn: 10505
 2003-12-18 06:40:22 +00:00
Misha Brukman
9b9d3e0bef Fix the links to match our 'llvm' namespace in doxygen-generated docs. 
llvm-svn: 10504
 2003-12-17 23:10:49 +00:00
Misha Brukman
adac37e69b * Converted C-style comments to C++ 
* Doxygenified comments
* Reordered #includes

llvm-svn: 10503
 2003-12-17 22:08:20 +00:00
Misha Brukman
61860852dc Reordered #includes. 
llvm-svn: 10502
 2003-12-17 22:06:28 +00:00
Misha Brukman
9f2f87bb6b Doxygenified some comments, reduced extraneous space. 
llvm-svn: 10501
 2003-12-17 22:06:08 +00:00
Misha Brukman
fe533cc4e6 Reorganized the Sparc backend to be more modular -- each different 
implementation of a Target{RegInfo, InstrInfo, Machine, etc} now has a separate
header and a separate implementation file.

This means that instead of a massive SparcInternals.h that forces a
recompilation of the whole target whenever a minor detail is changed, you should
only recompile a few files.

Note that SparcInternals.h is still around; its contents should be minimized.

llvm-svn: 10500
 2003-12-17 22:04:00 +00:00
Misha Brukman
65ab1b90ee Since we are now in the 'llvm' namespace, the mangled C++ name of structs 
and hence the links, all change.

llvm-svn: 10495
 2003-12-17 18:46:49 +00:00
John Criswell
1a74a6208a Added Stacker to Reid Spencer's list of contributions. 
llvm-svn: 10494
 2003-12-17 18:15:04 +00:00
Brian Gaeke
81d68517ea Make getObjectType() smarter about ranlibbed Mac OS X archives. 
llvm-svn: 10493
 2003-12-17 00:18:18 +00:00
Misha Brukman
dbedab0d6d Disable __attribute__((weak)) on Mac OS X and other lame platforms. 
llvm-svn: 10489
 2003-12-16 22:57:30 +00:00
Chris Lattner
25f3d9c8b6 Add a faq entry for the demo page 
llvm-svn: 10488
 2003-12-16 22:33:55 +00:00
Brian Gaeke
98cfeec17b Fix typo in comment. 
llvm-svn: 10487
 2003-12-16 21:55:45 +00:00
Chris Lattner
ce63e55d3f There is no reason to add -load support to LLC 
llvm-svn: 10483
 2003-12-15 23:10:25 +00:00
Misha Brukman
e7445371ae Added info about PR186: weak linkage on memory functions. 
llvm-svn: 10479
 2003-12-15 22:48:12 +00:00
Misha Brukman
94364aa87d Make all memory functions have weak linkage so that they can be overridden with 
custom memory-management implementations (e.g., bash).

llvm-svn: 10478
 2003-12-15 22:32:50 +00:00
Chris Lattner
062d3a4ab5 Fix for PR185 & IndVarsSimplify/2003-12-15-Crash.llx 
llvm-svn: 10473
 2003-12-15 17:34:02 +00:00
Chris Lattner
ced27a3b11 New testcase, for PR185 
llvm-svn: 10471
 2003-12-15 17:33:41 +00:00
Chris Lattner
5956155f00 This header is dead 
llvm-svn: 10470
 2003-12-15 06:39:18 +00:00
Alkis Evlogimenos
657eb40294 Change preserve all claim to just preserve live variables and phielimination. 
llvm-svn: 10469
 2003-12-15 04:55:38 +00:00
Chris Lattner
43f78576a7 New testcase 
llvm-svn: 10468
 2003-12-15 00:03:53 +00:00
Chris Lattner
5fc36a496f Refactor code just a little bit, allowing us to implement TailCallElim/return_constant.ll 
llvm-svn: 10467
 2003-12-14 23:57:39 +00:00
Chris Lattner
ccf7c2cee2 new test 
llvm-svn: 10466
 2003-12-14 23:39:34 +00:00
Chris Lattner
9047cde657 Finegrainify namespacification 
llvm-svn: 10465
 2003-12-14 23:25:48 +00:00
Chris Lattner
2fdf5e32aa Finegrainify namespacification 
llvm-svn: 10464
 2003-12-14 21:35:53 +00:00
Chris Lattner
30ae898eb7 Finegrainify namespacification 
Make the Timer code give correct user/system/user+system times when -track-memory is enabled

llvm-svn: 10463
 2003-12-14 21:27:33 +00:00
Alkis Evlogimenos
ac4fe24ed8 I wonder how this didn't cause any tests to fail... 
llvm-svn: 10462
 2003-12-14 13:30:19 +00:00
Alkis Evlogimenos
29127b8825 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
Alkis Evlogimenos
b96436e679 Change preserve all claim to just preserve live variables and phielimination. 
llvm-svn: 10460
 2003-12-14 10:14:23 +00:00
Chris Lattner
03449cbaa7 Rev the release notes to 1.2 
llvm-svn: 10459
 2003-12-14 05:03:43 +00:00
Chris Lattner
0d3a8b1cb4 Do not promote volatile alias sets into registers 
llvm-svn: 10458
 2003-12-14 04:52:31 +00:00
Chris Lattner
a9d238d598 Finegrainify namespacification 
Add capability to represent volatile AliasSet's
Propagate this information from loads&stores into the aliassets

llvm-svn: 10457
 2003-12-14 04:52:11 +00:00
Chris Lattner
69a2e9985d Add capability to represent volatile AliasSet's 
llvm-svn: 10456
 2003-12-14 04:51:34 +00:00
Chris Lattner
607465d961 Testcase for PR179 
llvm-svn: 10455
 2003-12-14 04:46:07 +00:00
Alkis Evlogimenos
d58f58b351 When reserving a preallocated register spill the aliases of this 
register too.

llvm-svn: 10450
 2003-12-13 11:58:10 +00:00
Alkis Evlogimenos
f84f86137b Ignore non-allocatable physical registers in live interval analysis. 
llvm-svn: 10449
 2003-12-13 11:11:02 +00:00
Alkis Evlogimenos
18bf6b5ad7 Expire any active intervals left when register allocation is done. 
llvm-svn: 10448
 2003-12-13 05:50:19 +00:00
Alkis Evlogimenos
225fc9c6db Add instruction numbers to debugging output. 
llvm-svn: 10447
 2003-12-13 05:48:57 +00:00
Alkis Evlogimenos
5ca15c8f5e Add a floating point killer pass. This pass runs before register 
allocaton on the X86 to add information to the machine code denoting
that our floating point stackifier cannot handle virtual point
register that are alive across basic blocks. This pass adds an
implicit def of all virtual floating point register at the end of each
basic block.

llvm-svn: 10446
 2003-12-13 05:36:22 +00:00
Alkis Evlogimenos
2a41fcbef3 Handle explicit physical register defs. 
llvm-svn: 10445
 2003-12-13 05:26:39 +00:00
Alkis Evlogimenos
6e511754e5 Remove unecessary if statements when looping on ImplicitDefs. 
llvm-svn: 10444
 2003-12-13 01:20:58 +00:00
Chris Lattner
d9857c3c6e Try rewording stuff talking about unwinding. Hopefully it will make llvm sound less bad, and still make John happy. :) 
llvm-svn: 10439
 2003-12-12 21:33:08 +00:00