Evan Cheng
827f269fac
Added getNumDefs().
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llvm-svn: 41901
2007-09-13 00:16:29 +00:00
Evan Cheng
8f126e59f5
Added TargetInstrDescriptor::numDefs - num of results.
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llvm-svn: 40709
2007-08-02 00:20:17 +00:00
Christopher Lamb
9a0d88efde
Add target independent MachineInstr's to represent subreg insert/extract in MBB's. PR1350
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llvm-svn: 40518
2007-07-26 07:48:21 +00:00
Evan Cheng
6125079452
Add OptionalDefOperand. Remove clobbersPred. Also add DefinesPredicate to be used by if-converter.
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llvm-svn: 38499
2007-07-10 18:06:29 +00:00
Dan Gohman
3f7558673e
Fix a typo in a comment.
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llvm-svn: 38456
2007-07-09 15:15:24 +00:00
Dan Gohman
9cbc3fb1ab
Revert the earlier change that removed the M_REMATERIALIZABLE machine
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instruction flag, and use the flag along with a virtual member function
hook for targets to override if there are instructions that are only
trivially rematerializable with specific operands (i.e. constant pool
loads).
llvm-svn: 37728
2007-06-26 00:48:07 +00:00
Dan Gohman
b60d8a92c9
Replace M_REMATERIALIZIBLE and the newly-added isOtherReMaterializableLoad
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with a general target hook to identify rematerializable instructions. Some
instructions are only rematerializable with specific operands, such as loads
from constant pools, while others are always rematerializable. This hook
allows both to be identified as being rematerializable with the same
mechanism.
llvm-svn: 37644
2007-06-19 01:48:05 +00:00
Evan Cheng
4358a7f1e9
Replace CanBeDuplicated() with a M_NOT_DUPLICABLE bit.
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llvm-svn: 37642
2007-06-19 01:21:41 +00:00
Evan Cheng
34a6cb0b2e
Added CanBeDuplicated(). It returns true if an instruction can be safely duplicated (e.g. during ifcvt).
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llvm-svn: 37605
2007-06-15 21:13:54 +00:00
Dale Johannesen
62f49dd524
Do not treat FP_REG_KILL as terminator in branch analysis (X86).
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llvm-svn: 37578
2007-06-14 22:03:45 +00:00
Dan Gohman
35f2b4d716
Add a target hook to allow loads from constant pools to be rematerialized, and an
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implementation for x86.
llvm-svn: 37576
2007-06-14 20:50:44 +00:00
Evan Cheng
1a6c0341fd
Add a utility routine to check for unpredicated terminator instruction.
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llvm-svn: 37528
2007-06-08 21:59:56 +00:00
Evan Cheng
4de6599e83
Add a machine instruction flag indicating the instruction can clobber condition code / register(s) used to predicate instructions.
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llvm-svn: 37464
2007-06-06 10:13:55 +00:00
Evan Cheng
d8b25a2091
Add missing const qualifiers.
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llvm-svn: 37341
2007-05-29 18:35:22 +00:00
Evan Cheng
f2d1d0124e
Add a couple of target hooks for predication.
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llvm-svn: 37306
2007-05-23 07:19:12 +00:00
Evan Cheng
7d3f771e9c
Consistency.
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llvm-svn: 37274
2007-05-22 01:21:58 +00:00
Evan Cheng
234aab208a
RemoveBranch() and InsertBranch() now returns number of instructions deleted / inserted.
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llvm-svn: 37192
2007-05-18 00:05:48 +00:00
Evan Cheng
dc9e574073
Remove. Not needed.
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llvm-svn: 37139
2007-05-17 00:11:35 +00:00
Evan Cheng
3163b77d5e
Add target hook to specify block size limit for if-conversion.
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llvm-svn: 37134
2007-05-16 23:45:53 +00:00
Evan Cheng
973f4a19cb
PredicateInstruction returns true if the operation was successful.
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llvm-svn: 37124
2007-05-16 21:53:07 +00:00
Evan Cheng
3b10540b5e
Rename M_PREDICATED to M_PREDICABLE; Move TargetInstrInfo::isPredicatable() to MachineInstr::isPredicable().
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llvm-svn: 37115
2007-05-16 20:43:42 +00:00
Evan Cheng
770584a8cd
Fix comments.
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llvm-svn: 37096
2007-05-16 05:09:34 +00:00
Evan Cheng
7fe6d7cb7e
Add TargetInstrInfo predication hooks.
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llvm-svn: 37091
2007-05-16 01:58:56 +00:00
Evan Cheng
71c4d42bd7
All operands that made up of the predicate operands are maked M_PREDICATE_OPERAND.
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llvm-svn: 37062
2007-05-15 01:21:27 +00:00
Evan Cheng
2081cf96ed
Add a TargetInstrDescriptor flag to mark an instruction as "re-materializable".
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It means the instruction can be easily re-materialized at any point. e.g.
constant generation, load from constantpool.
llvm-svn: 35158
2007-03-19 06:19:16 +00:00
Evan Cheng
0408dc0d37
These forward declarations are not needed.
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llvm-svn: 35120
2007-03-16 08:41:06 +00:00
Jeff Cohen
b19ec59b5c
Fix for VS 2005 problem supplied by Morten Ofstad.
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llvm-svn: 35098
2007-03-14 15:25:21 +00:00
Jim Laskey
23ed7d2625
Make LABEL a builtin opcode.
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llvm-svn: 33537
2007-01-26 14:34:52 +00:00
Evan Cheng
e0aa279fc8
Silly assertion. Forgot variable_ops instructions can have arbitrary number of
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operands.
llvm-svn: 32592
2006-12-15 06:37:08 +00:00
Evan Cheng
88a55bdd64
Move findTiedToSrcOperand to TargetInstrDescriptor.
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llvm-svn: 32366
2006-12-08 18:45:48 +00:00
Evan Cheng
dfec38a575
Use MI's TargetInstrDescriptor.
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llvm-svn: 32352
2006-12-08 07:57:56 +00:00
Evan Cheng
d042dac8ab
- Add getOperandConstraint() to TargetInstrDescriptor.
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- convertToThreeAddress() change to allow single two-address MI to be converted
into one or more 3-address MIs.
llvm-svn: 32094
2006-12-01 21:46:55 +00:00
Evan Cheng
6f5962e79f
Add opcode to TargetInstrDescriptor.
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llvm-svn: 31802
2006-11-17 01:36:01 +00:00
Evan Cheng
8743c67826
Remove M_2_ADDR_FLAG.
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llvm-svn: 31583
2006-11-09 02:22:54 +00:00
Chris Lattner
b6be2b873f
Add a new operand flag to mark which operand is the first predicate operand
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of an M_PREDICATED instruction.
llvm-svn: 31482
2006-11-06 23:53:08 +00:00
Chris Lattner
d7138e5f2d
add a flag so that predicated instructions can be recognized by branch
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folding
llvm-svn: 31479
2006-11-06 21:44:17 +00:00
Evan Cheng
1da5ee8485
Rename
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llvm-svn: 31364
2006-11-01 23:18:32 +00:00
Evan Cheng
b1ac9f6c12
Added getTiedToSrcOperand() to check for two-address'ness.
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llvm-svn: 31360
2006-11-01 23:00:31 +00:00
Evan Cheng
c566892bd5
Add operand constraints to TargetInstrInfo.
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llvm-svn: 31333
2006-11-01 00:27:05 +00:00
Chris Lattner
dcfee77788
add another target hook for branch folding.
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llvm-svn: 31262
2006-10-28 17:29:57 +00:00
Chris Lattner
bc4f0e8b56
update comment
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llvm-svn: 31165
2006-10-24 17:41:22 +00:00
Rafael Espindola
b35e4b16ae
fix assert comment
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llvm-svn: 31154
2006-10-24 14:47:28 +00:00
Chris Lattner
7353b07275
expose DWARF_LABEL opcode# so the branch folder can update debug info properly.
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llvm-svn: 31024
2006-10-17 22:41:45 +00:00
Chris Lattner
ea84388ac0
update comment
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llvm-svn: 31023
2006-10-17 22:12:15 +00:00
Chris Lattner
b441d8e8ce
it is easier to implement these when they are virtual
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llvm-svn: 30944
2006-10-13 21:02:27 +00:00
Chris Lattner
520bf168f5
allow branch reversal to fail
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llvm-svn: 30943
2006-10-13 20:59:31 +00:00
Chris Lattner
f8eaaded24
replace the existing branch inspection/modification APIs with something more
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useful and general.
llvm-svn: 30940
2006-10-13 20:44:01 +00:00
Jim Laskey
a67adda697
Use an enumeration to eliminate data relocations.
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llvm-svn: 29249
2006-07-21 20:57:35 +00:00
Evan Cheng
6909286861
Clean up
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llvm-svn: 28851
2006-06-17 01:42:20 +00:00
Evan Cheng
276a39d956
Avoid undesirable behavior when assert is not enabled.
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llvm-svn: 28793
2006-06-15 08:10:27 +00:00