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* Push LLVMContexts through the IntegerType APIs.Owen Anderson2009-08-131-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78948 91177308-0d34-0410-b5e6-96231b3b80d8
* Don't tamper with <undef> operands in MachineInstr::addRegisterKilled.Jakob Stoklund Olesen2009-08-041-3/+1
| | | | | | | For an undef operand, MO.getReg() is meaningless and we should not use it. Undef operands should be skipped entirely. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78095 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix Bug 4657: register scavenger asserts with subreg loweringJakob Stoklund Olesen2009-08-031-0/+2
| | | | | | | | | | | | | | | When LowerSubregsInstructionPass::LowerInsert eliminates an INSERT_SUBREG instriction because it is an identity copy, make sure that the same registers are alive before and after the elimination. When the super-register is marked <undef> this requires inserting an IMPLICIT_DEF instruction to make sure the super register is live. Fix a related bug where a kill flag on the inserted sub-register was not transferred properly. Finally, clear the undef flag in MachineInstr::addRegisterKilled. Undef implies dead and kill implies live, so they cant both be valid. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77989 91177308-0d34-0410-b5e6-96231b3b80d8
* Never add a kill flag to a constrained physical register in a two-addr ↵Jakob Stoklund Olesen2009-08-021-0/+3
| | | | | | instruction. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77906 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix a typo.Evan Cheng2009-07-281-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77369 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix http://llvm.org/bugs/show_bug.cgi?id=4583Jakob Stoklund Olesen2009-07-191-2/+6
| | | | | | | | Inline asm instructions may have additional <imp-def,kill> register operands. These operands are not marked with a flag like the normal asm operands, so we must not assert that there is a flag. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76373 91177308-0d34-0410-b5e6-96231b3b80d8
* Teach MachineInstr::isRegTiedToDefOperand() to correctly parse inline asm ↵Jakob Stoklund Olesen2009-07-161-8/+12
| | | | | | | | | | | operands. The inline asm operands must be parsed from the first flag, you cannot assume that an immediate operand preceeding a register use operand is the flag. PowerPC "m" operands are represented as (flag, imm, reg) triples. isRegTiedToDefOperand() would incorrectly interpret the imm as the flag. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76101 91177308-0d34-0410-b5e6-96231b3b80d8
* llvm_unreachable->llvm_unreachable(0), LLVM_UNREACHABLE->llvm_unreachable.Edwin Török2009-07-141-2/+2
| | | | | | | | | | This adds location info for all llvm_unreachable calls (which is a macro now) in !NDEBUG builds. In NDEBUG builds location info and the message is off (it only prints "UREACHABLE executed"). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75640 91177308-0d34-0410-b5e6-96231b3b80d8
* assert(0) -> LLVM_UNREACHABLE.Edwin Török2009-07-111-2/+3
| | | | | | | | | | Make llvm_unreachable take an optional string, thus moving the cerr<< out of line. LLVM_UNREACHABLE is now a simple wrapper that makes the message go away for NDEBUG builds. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75379 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a bit IsUndef to MachineOperand. This indicates the def / use register ↵Evan Cheng2009-06-301-5/+11
| | | | | | | | | | | operand is defined by an implicit_def. That means it can def / use any register and passes (e.g. register scavenger) can feel free to ignore them. The register allocator, when it allocates a register to a virtual register defined by an implicit_def, can allocate any physical register without worrying about overlapping live ranges. It should mark all of operands of the said virtual register so later passes will do the right thing. This is not the best solution. But it should be a lot less fragile to having the scavenger try to track what is defined by implicit_def. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74518 91177308-0d34-0410-b5e6-96231b3b80d8
* Rearrange some stuff in MachineOperand and add a new TargetFlags field.Chris Lattner2009-06-241-25/+29
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74087 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix support for inline asm input / output operand tying when operand spans ↵Evan Cheng2009-06-241-11/+23
| | | | | | across multiple registers (e.g. two i64 operands in 32-bit mode). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74053 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove some unnecessary #includes.Dan Gohman2009-06-051-1/+0
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72948 91177308-0d34-0410-b5e6-96231b3b80d8
* Make DebugLoc independent of DwarfWriter.Argiris Kirtzidis2009-04-301-1/+4
| | | | | | | | | -Replace DebugLocTuple's Source ID with CompileUnit's GlobalVariable* -Remove DwarfWriter::getOrCreateSourceID -Make necessary changes for the above (fix callsites, etc.) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70520 91177308-0d34-0410-b5e6-96231b3b80d8
* MachineInstr::isRegTiedTo{Use,Def}Operand can safely be made const.Jakob Stoklund Olesen2009-04-291-2/+4
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70408 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix MachineInstr::getNumExplicitOperands to countDan Gohman2009-04-151-2/+2
| | | | | | | variadic operands correctly. Patch by Jakob Stoklund Olesen! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69190 91177308-0d34-0410-b5e6-96231b3b80d8
* Give RemoveRegOperandFromRegInfo a comment and move theDan Gohman2009-04-151-0/+15
| | | | | | | code out of line. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69124 91177308-0d34-0410-b5e6-96231b3b80d8
* ignore register zero in isRegTiedToUseOperand, following the example ofChris Lattner2009-04-091-1/+1
| | | | | | | | isRegTiedToDefOperand. Thanks to Bob for pointing this out! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68734 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix pr3954. The register scavenger asserts for inline assembly withBob Wilson2009-04-091-9/+17
| | | | | | | | | | | | | register destinations that are tied to source operands. The TargetInstrDescr::findTiedToSrcOperand method silently fails for inline assembly. The existing MachineInstr::isRegReDefinedByTwoAddr was very close to doing what is needed, so this revision makes a few changes to that method and also renames it to isRegTiedToUseOperand (for consistency with the very similar isRegTiedToDefOperand and because it handles both two-address instructions and inline assembly with tied registers). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68714 91177308-0d34-0410-b5e6-96231b3b80d8
* reg0 references are not real registers. This fixes a crash on the Chris Lattner2009-04-091-1/+1
| | | | | | | attached testcase. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68712 91177308-0d34-0410-b5e6-96231b3b80d8
* Model inline asm constraint which ties an input to an output register as ↵Evan Cheng2009-03-231-1/+60
| | | | | | machine operand TIED_TO constraint. This eliminated the need to pre-allocate registers for these. This also allows register allocator can eliminate the unneeded copies. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67512 91177308-0d34-0410-b5e6-96231b3b80d8
* Added MachineInstr::isRegTiedToDefOperand to check for two-addressness.Evan Cheng2009-03-191-1/+19
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67335 91177308-0d34-0410-b5e6-96231b3b80d8
* Print out debug info when printing the machine instruction.Bill Wendling2009-02-191-0/+9
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65067 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a DebugLoc field and some simple accessors.Dale Johannesen2009-01-271-7/+46
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63152 91177308-0d34-0410-b5e6-96231b3b80d8
* Use isTerminator() instead of isBranch()||isReturn() inDan Gohman2008-12-231-1/+1
| | | | | | | | | several places. isTerminator() returns true for a superset of cases, and includes things like FP_REG_KILL, which are nither return or branch but aren't safe to move/remat/etc. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61373 91177308-0d34-0410-b5e6-96231b3b80d8
* Print subreg information in MachineInstr::dump.Dan Gohman2008-12-181-1/+5
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61213 91177308-0d34-0410-b5e6-96231b3b80d8
* Minor code simplification.Dan Gohman2008-12-091-3/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60804 91177308-0d34-0410-b5e6-96231b3b80d8
* Drop the reg argument to isRegReDefinedByTwoAddr, which was redundant.Dan Gohman2008-12-051-3/+4
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60586 91177308-0d34-0410-b5e6-96231b3b80d8
* Add more const qualifiers. This fixes build breakage from r59540.Dan Gohman2008-11-181-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59542 91177308-0d34-0410-b5e6-96231b3b80d8
* Make some methods const.Dan Gohman2008-11-181-2/+4
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59540 91177308-0d34-0410-b5e6-96231b3b80d8
* Added missing print functions that take a raw_ostreamMon P Wang2008-10-101-2/+11
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57339 91177308-0d34-0410-b5e6-96231b3b80d8
* Switch the MachineOperand accessors back to the short names likeDan Gohman2008-10-031-24/+24
| | | | | | | isReg, etc., from isRegister, etc. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57006 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix a think-o in isSafeToMove. This fixes it from thinking thatDan Gohman2008-10-021-1/+1
| | | | | | | volatile memory references are safe to move. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56948 91177308-0d34-0410-b5e6-96231b3b80d8
* Next round of earlyclobber handling. Approach theDale Johannesen2008-09-241-8/+1
| | | | | | | | | | | | RA problem by expanding the live interval of an earlyclobber def back one slot. Remove overlap-earlyclobber throughout. Remove earlyclobber bits and their handling from live internals. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56539 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a method to MachineInstr for testing whether it makesDan Gohman2008-09-241-9/+30
| | | | | | | any volatile memory references. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56528 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a bit to mark operands of asm's that conflictDale Johannesen2008-09-171-1/+10
| | | | | | | | | | | with an earlyclobber operand elsewhere. Propagate this bit and the earlyclobber bit through SDISel. Change linear-scan RA not to allocate regs in a way that conflicts with an earlyclobber. See also comments. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56290 91177308-0d34-0410-b5e6-96231b3b80d8
* adjust last patch per review feedbackDale Johannesen2008-09-141-3/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56194 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove isImm(), isReg(), and friends, in favor of Dan Gohman2008-09-131-15/+15
| | | | | | | | | | isImmediate(), isRegister(), and friends, to avoid confusion about having two different names with the same meaning. I'm not attached to the longer names, and would be ok with changing to the shorter names if others prefer it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56189 91177308-0d34-0410-b5e6-96231b3b80d8
* Pass "earlyclobber" bit through to machineDale Johannesen2008-09-121-2/+6
| | | | | | | | | representation; coalescer and RA need to know about it. No functional change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56161 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix addRegisterDead and addRegisterKilled to be more thoroughDan Gohman2008-09-031-19/+34
| | | | | | | | | | | | | | | | | when searching for redundant subregister dead/kill bits. Previously it was common to see instructions marked like this: "RET %EAX<imp-use,kill>, %AX<imp-use,kill>" With this change, addRegisterKilled continues scanning after finding the %EAX operand, so it proceeds to discover the redundant %AX kill and eliminates it, producing this: "RET %EAX<imp-use,kill>" This currently has no effect on the generated code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55698 91177308-0d34-0410-b5e6-96231b3b80d8
* Fold isRematerializable checks into isSafeToReMat.Evan Cheng2008-08-301-1/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55563 91177308-0d34-0410-b5e6-96231b3b80d8
* Move the check whether it's worth remating to caller.Evan Cheng2008-08-271-3/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55434 91177308-0d34-0410-b5e6-96231b3b80d8
* Refactor isSafeToReMat out of 2addr pass.Evan Cheng2008-08-271-0/+25
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55430 91177308-0d34-0410-b5e6-96231b3b80d8
* simplify PseudoSourceValue printing a bit. Unnest all of ↵Chris Lattner2008-08-241-3/+5
| | | | | | PseudoSourceValue.cpp from the llvm namespace. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55293 91177308-0d34-0410-b5e6-96231b3b80d8
* Print PseudoSourceValue.Evan Cheng2008-08-241-2/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55291 91177308-0d34-0410-b5e6-96231b3b80d8
* Change the FoldingSetNodeID usage for objects which carryDan Gohman2008-08-201-0/+10
| | | | | | | | | alignment and volatility information, such as loads and stores, to reduce the number of integer values added to the FoldingSetNodeID. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55058 91177308-0d34-0410-b5e6-96231b3b80d8
* Move MachineInstr::getOpcode inline.Owen Anderson2008-08-141-6/+0
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54807 91177308-0d34-0410-b5e6-96231b3b80d8
* Speed up addRegisterDead by adding more fast checks before performing the ↵Owen Anderson2008-08-141-1/+3
| | | | | | | | | | expensive subregister query, and by increasing the size of the subregister hashtable so that there are fewer collisions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54781 91177308-0d34-0410-b5e6-96231b3b80d8
* Fold the useful features of alist and alist_node into ilist, andDan Gohman2008-07-281-5/+4
| | | | | | | | | | | | | | | | | a new ilist_node class, and remove them. Unlike alist_node, ilist_node doesn't attempt to manage storage itself, so it avoids the associated problems, including being opaque in gdb. Adjust the Recycler class so that it doesn't depend on alist_node. Also, change it to use explicit Size and Align parameters, allowing it to work when the largest-sized node doesn't have the greatest alignment requirement. Change MachineInstr's MachineMemOperand list from a pool-backed alist to a std::list for now. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54146 91177308-0d34-0410-b5e6-96231b3b80d8
* Now that the MachineInstr leaks are fixed, enable leak checkingDan Gohman2008-07-211-0/+2
| | | | | | | in the MachineInstr clone code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53868 91177308-0d34-0410-b5e6-96231b3b80d8
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