Add a method to MachineInstr for testing whether it makes
any volatile memory references.

llvm-svn: 56528

Add a bit to mark operands of asm's that conflict
with an earlyclobber operand elsewhere. Propagate
this bit and the earlyclobber bit through SDISel.
Change linear-scan RA not to allocate regs in a

Add a bit to mark operands of asm's that conflict
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.

llvm-svn: 56290

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adjust last patch per review feedback

llvm-svn: 56194

Remove isImm(), isReg(), and friends, in favor of
isImmediate(), isRegister(), and friends, to avoid confusion
about having two different names with the same meaning. I'm
not attached to the longer

Remove isImm(), isReg(), and friends, in favor of
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.

llvm-svn: 56189

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Pass "earlyclobber" bit through to machine
representation; coalescer and RA need to know
about it. No functional change.

llvm-svn: 56161

Fix addRegisterDead and addRegisterKilled to be more thorough
when searching for redundant subregister dead/kill bits.

Previously it was common to see instructions marked like this:
"RET %EAX<imp-

Fix addRegisterDead and addRegisterKilled to be more thorough
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.

llvm-svn: 55698

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Fold isRematerializable checks into isSafeToReMat.

llvm-svn: 55563

Move the check whether it's worth remating to caller.

llvm-svn: 55434

Refactor isSafeToReMat out of 2addr pass.

llvm-svn: 55430

simplify PseudoSourceValue printing a bit. Unnest all of PseudoSourceValue.cpp from the llvm namespace.

llvm-svn: 55293

Print PseudoSourceValue.

llvm-svn: 55291

Change the FoldingSetNodeID usage for objects which carry
alignment and volatility information, such as loads and
stores, to reduce the number of integer values added to
the FoldingSetNodeID.

llvm-s

Change the FoldingSetNodeID usage for objects which carry
alignment and volatility information, such as loads and
stores, to reduce the number of integer values added to
the FoldingSetNodeID.

llvm-svn: 55058

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Move MachineInstr::getOpcode inline.

llvm-svn: 54807

Speed up addRegisterDead by adding more fast checks before performing the expensive
subregister query, and by increasing the size of the subregister hashtable so
that there are fewer collisions.

ll

Speed up addRegisterDead by adding more fast checks before performing the expensive
subregister query, and by increasing the size of the subregister hashtable so
that there are fewer collisions.

llvm-svn: 54781

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Fold the useful features of alist and alist_node into ilist, and
a new ilist_node class, and remove them. Unlike alist_node,
ilist_node doesn't attempt to manage storage itself, so it avoids
the asso

Fold the useful features of alist and alist_node into ilist, and
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.

llvm-svn: 54146

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Now that the MachineInstr leaks are fixed, enable leak checking
in the MachineInstr clone code.

llvm-svn: 53868

Fix a memory leak in LiveIntervalAnalysis.

llvm-svn: 53779

Re-introduce LeakDetector support for MachineInstrs and MachineBasicBlocks.
Fix a leak that this turned up in LowerSubregs.cpp.
And, comment a leak in LiveIntervalAnalysis.cpp.

llvm-svn: 53746

Add an assert to check for empty flags for MachineMemOperand.

llvm-svn: 53680

Trim unnecessary #includes.

llvm-svn: 53471

- Change the horrible N^2 isRegReDefinedByTwoAddr. Now callers must supply the operand index of def machineoperand and at most one full scan of non-implicit operands is needed.
- Change local registe

- Change the horrible N^2 isRegReDefinedByTwoAddr. Now callers must supply the operand index of def machineoperand and at most one full scan of non-implicit operands is needed.
- Change local register allocator to use the new isRegReDefinedByTwoAddr instead of reinventing the wheel.

llvm-svn: 53394

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It's no longer necessary to test if a MachineBasicBlock's
parent is non-null. It now always is.

llvm-svn: 53263

Verify that MachineMemOperand alignment is a non-zero power of 2.

llvm-svn: 53262

Pool-allocation for MachineInstrs, MachineBasicBlocks, and
MachineMemOperands. The pools are owned by MachineFunctions.

This drastically reduces the number of calls to malloc/free made
during the "E

Pool-allocation for MachineInstrs, MachineBasicBlocks, and
MachineMemOperands. The pools are owned by MachineFunctions.

This drastically reduces the number of calls to malloc/free made
during the "Emit" phase of scheduling, as well as later phases
in CodeGen. Combined with other changes, this speeds up the
"instruction selection" phase of CodeGen by 10% in some cases.

llvm-svn: 53212

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Move MachineMemOperand's constructor out of line, to avoid a
#include dependency on Support/MathExtras.h in the header file.

llvm-svn: 53200