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117 Commits

Author SHA1 Message Date
Evan Cheng
58ea935f6f Add a variant of foldMemoryOperand to fold any load / store, not just load / store from / to stack slots. 
llvm-svn: 41597
 2007-08-30 05:52:20 +00:00
Christopher Lamb
e0c9bd8d2e Move isSubRegOf into MRegisterInfo. Fix a missed move elimination in LowerSubregs and add more debugging output there. 
llvm-svn: 41005
 2007-08-10 21:11:55 +00:00
Christopher Lamb
7bef240f69 Have register info provide the inverse mapping of register->superregisters. PR1350 
llvm-svn: 40519
 2007-07-26 08:01:58 +00:00
Anton Korobeynikov
5635277c36 Long live the exception handling! 
This patch fills the last necessary bits to enable exceptions
handling in LLVM. Currently only on x86-32/linux.

In fact, this patch adds necessary intrinsics (and their lowering) which
represent really weird target-specific gcc builtins used inside unwinder.

After corresponding llvm-gcc patch will land (easy) exceptions should be
more or less workable. However, exceptions handling support should not be 
thought as 'finished': I expect many small and not so small glitches
everywhere.

llvm-svn: 39855
 2007-07-14 14:06:15 +00:00
Evan Cheng
30adb50aaf Add comment. 
llvm-svn: 37741
 2007-06-26 21:19:07 +00:00
Evan Cheng
ac10d44736 Add immediate sub-registers. 
llvm-svn: 37738
 2007-06-26 20:59:16 +00:00
Christopher Lamb
68017d151b Add support to tablegen for specifying subregister classes on a per register class basis. 
llvm-svn: 37572
 2007-06-13 22:20:15 +00:00
Evan Cheng
65f0ba62d5 Add SPAdj parameter to account for call frame setup SP adjustment. 
llvm-svn: 36623
 2007-05-01 08:58:27 +00:00
Nate Begeman
767ee95d29 llvm bug #1350, parts 1, 2, and 3. 
llvm-svn: 36618
 2007-05-01 05:57:02 +00:00
Evan Cheng
34e61fc3cd Added hook hasReservedCallFrame(). It returns true if the call frame is 
included as part of the stack frame.

llvm-svn: 36606
 2007-05-01 00:47:46 +00:00
Evan Cheng
46096a692c Test if a register is sub- or super-register of another. 
llvm-svn: 36433
 2007-04-25 07:24:50 +00:00
Evan Cheng
05a82b68e8 Add super-register set. 
llvm-svn: 36295
 2007-04-21 00:54:06 +00:00
Evan Cheng
1835371d44 Add sub-registers set accessor. 
llvm-svn: 36282
 2007-04-20 21:28:05 +00:00
Evan Cheng
9ade37c2f1 Add sub-register sets. 
llvm-svn: 36277
 2007-04-20 21:11:22 +00:00
Evan Cheng
023342b277 Change getAllocatableSet() so it returns allocatable registers for a specific register class. 
llvm-svn: 36215
 2007-04-17 20:23:34 +00:00
Evan Cheng
41f4f032ee Added MRegisterInfo hook to re-materialize an instruction. 
llvm-svn: 35205
 2007-03-20 08:09:38 +00:00
Evan Cheng
b0c0d22f30 Minor interface change. 
llvm-svn: 34967
 2007-03-06 10:05:14 +00:00
Evan Cheng
db591ecaa8 Make requiresRegisterScavenging determination on a per MachineFunction basis. 
llvm-svn: 34711
 2007-02-28 00:59:19 +00:00
Evan Cheng
ee2e5de4fb MRegisterInfo disowns RegScavenger. It's immutable. 
llvm-svn: 34706
 2007-02-28 00:17:36 +00:00
Evan Cheng
11d5b762b9 Let MRegisterInfo owns RegScavenger. 
llvm-svn: 34689
 2007-02-27 21:08:07 +00:00
Evan Cheng
df6be7d4fc Temporay hook to enable register scavening for specific targets only. 
llvm-svn: 34513
 2007-02-23 01:07:04 +00:00
Jim Laskey
b57ee1fc37 Simplify lowering and selection of exception ops. 
llvm-svn: 34488
 2007-02-22 14:56:36 +00:00
Jim Laskey
6a937ad320 Support to provide exception and selector registers. 
llvm-svn: 34482
 2007-02-21 22:54:50 +00:00
Evan Cheng
e4ab9c032b Re-apply my liveintervalanalysis changes. Now with PR1207 fixes. 
llvm-svn: 34428
 2007-02-19 21:49:54 +00:00
Reid Spencer
b27fcf3482 For PR1207: 
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
Evan Cheng
8f7896bacc - Added regsOverlap() to test if two registers overlap. Or in case they are 
virtual registers, test if they the same.
- Added a virtual method to return target specific reserved registers, e.g. SP.

llvm-svn: 34375
 2007-02-17 11:04:35 +00:00
Evan Cheng
28eaad250f Use BitVector instead of vector<bool> which can be extremely slow. 
llvm-svn: 34302
 2007-02-15 05:59:24 +00:00
Chris Lattner
a24a3aaa94 rename DenseMap to IndexedMap. 
llvm-svn: 33749
 2007-02-01 05:32:05 +00:00
Evan Cheng
b64363a085 Added a MRegisterInfo hook that tells PEI the target is responsible for 
rounding the stack frame to a multiple of stack alignment.

llvm-svn: 33504
 2007-01-25 22:12:41 +00:00
Jim Laskey
a67f14502d Repair debug frames as a prelude to eh_frames. Switched to using MachineMoves 
by value so that clean up is less confusing (these vectors tend to be small.)

llvm-svn: 33488
 2007-01-24 18:45:13 +00:00
Evan Cheng
d9d93832b0 hasFP() is now a virtual method of MRegisterInfo. 
llvm-svn: 33455
 2007-01-23 00:57:47 +00:00
Evan Cheng
82d9b2077b Fix naming inconsistency: calleesave -> calleesaved. 
llvm-svn: 32821
 2007-01-02 21:30:17 +00:00
Evan Cheng
3eb79afad9 Add virtual method spillCalleeSaveRegisters() and restoreCalleeSaveRegisters() 
to MRegisterInfo. These allow the target to issue instructions to spill and
restore callee saved registers in case where individual stores / loads aren't
the correct / profitable choice.

llvm-svn: 32820
 2007-01-02 20:55:17 +00:00
Evan Cheng
51144ea51c - Added a hook processFunctionBeforeCalleeSaveScn(). This is called by PEI just 
before it determines which callee-save registers are to be spilled. This allows
the target to make changes such as forcing certain physical registers to be
spilled.
- Modified comments. It's important to note the order of registers in the array
returns by getCalleeSaveRegs() determines the order of callee save spill code.

llvm-svn: 30635
 2006-09-28 00:07:19 +00:00
Chris Lattner
a6ad752f16 update some comments 
llvm-svn: 29853
 2006-08-24 00:21:32 +00:00
Chris Lattner
db290f7479 Constify some methods. Patch provided by Anton Vayvod, thanks! 
llvm-svn: 29756
 2006-08-17 22:00:08 +00:00
Chris Lattner
8dd142b7b7 Doxygenify some methods. 
llvm-svn: 29592
 2006-08-10 06:00:40 +00:00
Chris Lattner
55dad5c6ac update comment 
llvm-svn: 29507
 2006-08-03 18:57:28 +00:00
Jim Laskey
a67adda697 Use an enumeration to eliminate data relocations. 
llvm-svn: 29249
 2006-07-21 20:57:35 +00:00
Evan Cheng
0675bc6539 Make sub- and super- register classes const. 
llvm-svn: 29200
 2006-07-19 05:58:18 +00:00
Evan Cheng
e2cebf972d Also add super- register class info. 
llvm-svn: 28222
 2006-05-11 07:31:44 +00:00
Evan Cheng
e989b1534a Added sub- register classes information. 
llvm-svn: 28196
 2006-05-09 06:35:30 +00:00
Jim Laskey
54dc261ef6 Use existing information. 
llvm-svn: 27574
 2006-04-10 23:09:19 +00:00
Jim Laskey
b93bc75add Foundation for call frame information. 
llvm-svn: 27491
 2006-04-07 16:34:46 +00:00
Jim Laskey
eb38a3e83a Expose base register for DwarfWriter. Refactor code accordingly. 
llvm-svn: 27225
 2006-03-28 13:48:33 +00:00
Jim Laskey
b4ff5c3e78 Tweak a comment. 
llvm-svn: 27066
 2006-03-24 16:18:42 +00:00
Jim Laskey
cec9c18c62 Add support to locate local variables in frames (early version.) 
llvm-svn: 26994
 2006-03-23 18:12:57 +00:00
Chris Lattner
ed45ad33b7 Make the LLVM headers "-ansi -pedantic -Wno-long-long" clean. 
Patch by Martin Partel!

llvm-svn: 26313
 2006-02-22 16:23:43 +00:00
Chris Lattner
086fd0f862 expose the set of values types holdable in a regclass to clients 
llvm-svn: 26307
 2006-02-21 23:51:58 +00:00
Chris Lattner
6684ba101f Move isLoadFrom/StoreToStackSlot from MRegisterInfo to TargetInstrInfo, 
a far more logical place.  Other methods should also be moved if anyone
is interested. :)

llvm-svn: 25912
 2006-02-02 20:11:55 +00:00