Fix a ton of comment typos found by codespell. Patch by
Luis Felipe Strano Moraes!

llvm-svn: 129558

Allow a target to choose whether to prefer the scavenger emergency spill slot
be next to the frame pointer or the stack pointer.

llvm-svn: 126956

Rename TargetFrameInfo into TargetFrameLowering. Also, put couple of FIXMEs and fixes here and there.

llvm-svn: 123170

Do not model all INLINEASM instructions as having unmodelled side effects.
Instead encode llvm IR level property "HasSideEffects" in an operand (shared
with IsAlignStack). Added MachineInstrs::hasUnm

Do not model all INLINEASM instructions as having unmodelled side effects.
Instead encode llvm IR level property "HasSideEffects" in an operand (shared
with IsAlignStack). Added MachineInstrs::hasUnmodeledSideEffects() to check
the operand when the instruction is an INLINEASM.

This allows memory instructions to be moved around INLINEASM instructions.

llvm-svn: 123044

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Move more PEI-related hooks to TFI

llvm-svn: 120229

Move callee-saved regs spills / reloads to TFI

llvm-svn: 120228

Move hasFP() and few related hooks to TargetFrameInfo.

llvm-svn: 119740

First step of huge frame-related refactoring: move emit{Prologue,Epilogue} out of TargetRegisterInfo to TargetFrameInfo, which is definitely much better suitable place

llvm-svn: 119097

Formatting.

llvm-svn: 117453

Trivial grammar tweak.

llvm-svn: 116710

Begin adding static dependence information to passes, which will allow us to
perform initialization without static constructors AND without explicit initialization
by the client. For the moment, pas

Begin adding static dependence information to passes, which will allow us to
perform initialization without static constructors AND without explicit initialization
by the client. For the moment, passes are required to initialize both their
(potential) dependencies and any passes they preserve. I hope to be able to relax
the latter requirement in the future.

llvm-svn: 116334

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Now with fewer extraneous semicolons!

llvm-svn: 115996

Simplify eliminateFrameIndex() interface back down now that PEI doesn't need
to try to re-use scavenged frame index reference registers. rdar://8277890

llvm-svn: 112241

Remove the now obsolete frame index virtual re-use algorithm from PEI. Pre-RA
virtual base registers handle this function, and more. A bit more cleanup
to do on the interface to eliminateFrameIndex()

Remove the now obsolete frame index virtual re-use algorithm from PEI. Pre-RA
virtual base registers handle this function, and more. A bit more cleanup
to do on the interface to eliminateFrameIndex() after this.

llvm-svn: 112237

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Add some statistics for PEI register scavenging

llvm-svn: 112084

Move enabling the local stack allocation pass into the target where it belongs.
For now it's still a command line option, but the interface to the generic
code doesn't need to know that.

llvm-svn: 1

Move enabling the local stack allocation pass into the target where it belongs.
For now it's still a command line option, but the interface to the generic
code doesn't need to know that.

llvm-svn: 111942

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Remove the MFI storage of the local allocation block size. It's not needed.

llvm-svn: 111847

Better handling of local offsets for downwards growing stacks. This corrects
relative offsets when there are offsets encoded in the instructions and
simplifies final allocation in PEI. rdar://8277890

Better handling of local offsets for downwards growing stacks. This corrects
relative offsets when there are offsets encoded in the instructions and
simplifies final allocation in PEI. rdar://8277890

llvm-svn: 111836

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Update local stack block allocation to let PEI do the allocs if no additional
base registers were required. This will allow for slightly better packing
of the locals when alignment padding is necessa

Update local stack block allocation to let PEI do the allocs if no additional
base registers were required. This will allow for slightly better packing
of the locals when alignment padding is necessary after callee saved registers.

llvm-svn: 111508

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Add materialization of virtual base registers for frame indices allocated into
the local block. Resolve references to those indices to a new base register.
For simplification and testing purposes, a

Add materialization of virtual base registers for frame indices allocated into
the local block. Resolve references to those indices to a new base register.
For simplification and testing purposes, a new virtual base register is
allocated for each frame index being resolved. The result is truly horrible,
but correct, code that's good for exercising the new code paths.

Next up is adding thumb1 support, which should be very simple. Following that
will be adding base register re-use and implementing a reasonable ARM
heuristic for when a virtual base register should be generated at all.

llvm-svn: 111315

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tidy up. remove unused local.

llvm-svn: 111206

Better handle alignment requirements for local objects in pre-regalloc frame
mapping. Have the local block track its alignment requirement, and then
apply that when the block itself is allocated. Pre

Better handle alignment requirements for local objects in pre-regalloc frame
mapping. Have the local block track its alignment requirement, and then
apply that when the block itself is allocated. Previously, offsets could
get adjusted in PEI to be different, relative to one another, than the
block allocation thought they would be, which defeats the point of doing
the allocation this way. Continuing rdar://8277890

llvm-svn: 111197

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Add a local stack object block allocation pass. This is still an
experimental pass that allocates locals relative to one another before
register allocation and then assigns them to actual stack slots

Add a local stack object block allocation pass. This is still an
experimental pass that allocates locals relative to one another before
register allocation and then assigns them to actual stack slots as a block
later in PEI. This will eventually allow targets with limited index offset
range to allocate additional base registers (not just FP and SP) to
more efficiently reference locals, as well as handle situations where
locals cannot be referenced via SP or FP at all (dynamic stack realignment
together with variable sized objects, for example). It's currently
incomplete and almost certainly buggy. Work in progress.

Disabled by default and gated via the -enable-local-stack-alloc command
line option.

rdar://8277890

llvm-svn: 111059

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Cleanup comment wording

llvm-svn: 110466

It's better to have the arrays, which would trigger the creation of stack
protectors, to be near the stack protectors on the stack. Accomplish this by
tagging the stack object with a predicate that i

It's better to have the arrays, which would trigger the creation of stack
protectors, to be near the stack protectors on the stack. Accomplish this by
tagging the stack object with a predicate that indicates that it would trigger
this. In the prolog-epilog inserter, assign these objects to the stack after the
stack protector but before the other objects.

llvm-svn: 109481

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