Backing out 48222 temporarily.

llvm-svn: 49124

Use a linked data structure for the uses lists of an SDNode, just like
LLVM Value/Use does and MachineRegisterInfo/MachineOperand does.
This allows constant time for all uses list maintenance operat

Use a linked data structure for the uses lists of an SDNode, just like
LLVM Value/Use does and MachineRegisterInfo/MachineOperand does.
This allows constant time for all uses list maintenance operations.

The idea was suggested by Chris. Reviewed by Evan and Dan.
Patch is tested and approved by Dan.

On normal use-cases compilation speed is not affected. On very big basic
blocks there are compilation speedups in the range of 15-20% or even better.

llvm-svn: 48822

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Introduce a new node for holding call argument
flags. This is needed by the new legalize types
infrastructure which wants to expand the 64 bit
constants previously used to hold the flags on
32 bit m

Introduce a new node for holding call argument
flags. This is needed by the new legalize types
infrastructure which wants to expand the 64 bit
constants previously used to hold the flags on
32 bit machines. There are two functional changes:
(1) in LowerArguments, if a parameter has the zext
attribute set then that is marked in the flags;
before it was being ignored; (2) PPC had some bogus
code for handling two word arguments when using the
ELF 32 ABI, which was hard to convert because of
the bogusness. As suggested by the original author
(Nicolas Geoffray), I've disabled it for the moment.
Tested with "make check" and the Ada ACATS testsuite.

llvm-svn: 48640

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Don't try to extract an i32 from an f64. This
getCopyToParts problem was noticed by the new
LegalizeTypes infrastructure. In order to avoid
this kind of thing in the future I've added a
check that

Don't try to extract an i32 from an f64. This
getCopyToParts problem was noticed by the new
LegalizeTypes infrastructure. In order to avoid
this kind of thing in the future I've added a
check that EXTRACT_ELEMENT is only used with
integers. Once LegalizeTypes is up and running
most likely BUILD_PAIR and EXTRACT_ELEMENT can
be removed, in favour of using apints instead.

llvm-svn: 48294

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Document an implementation detail about EXTRACT_SUBREG and INSERT_SUBREG sub-register operand.

llvm-svn: 48283

Revert 48125, 48126, and 48130 for now to unbreak some x86-64 tests.

llvm-svn: 48167

Use uint64_t not unsigned long long.

llvm-svn: 48154

Allow insert_subreg into implicit, target-specific values.
Change insert/extract subreg instructions to be able to be used in TableGen patterns.
Use the above features to reimplement an x86-64 pseud

Allow insert_subreg into implicit, target-specific values.
Change insert/extract subreg instructions to be able to be used in TableGen patterns.
Use the above features to reimplement an x86-64 pseudo instruction as a pattern.

llvm-svn: 48130

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Increase ISD::ParamFlags to 64 bits. Increase the ByValSize
field to 32 bits, thus enabling correct handling of ByVal
structs bigger than 0x1ffff. Abstract interface a bit.
Fixes gcc.c-torture/exec

Increase ISD::ParamFlags to 64 bits. Increase the ByValSize
field to 32 bits, thus enabling correct handling of ByVal
structs bigger than 0x1ffff. Abstract interface a bit.
Fixes gcc.c-torture/execute/pr23135.c and
gcc.c-torture/execute/pr28982b.c in gcc testsuite (were ICE'ing
on ppc32, quietly producing wrong code on x86-32.)

llvm-svn: 48122

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Implement x86 support for @llvm.prefetch. It corresponds to prefetcht{0|1|2} and prefetchnta instructions.

llvm-svn: 48042

Clarify that CALLSEQ_START..END may not be nested,
and add some protection against creating such.

llvm-svn: 47957

Rename isOperand() to isOperandOf() (and other similar methods). It always confuses me.

llvm-svn: 47872

Document that the shuffle mask may contain undef
values.

llvm-svn: 47719

LegalizeTypes support for INSERT_VECTOR_ELT.

llvm-svn: 47669

Factor the assert for indexed loads/stores out of LoadSDNode
and StoreSDNode into LSBaseSDNode.

llvm-svn: 47570

add LSBaseSDNode::getOffset at Dan's request.

llvm-svn: 47558

Add a new method to SDNode/SDOperand named getValueSizeInBits
that combines getValueType and MVT::getSizeInBits, since this
occurrs frequently.

llvm-svn: 47552

minor cleanups to LSBaseSDNode.

llvm-svn: 47469

Better names as per Evan's request

llvm-svn: 47435

Atomic op support. If any gcc test uses __sync builtins, it might start failing on archs that haven't implemented them yet

llvm-svn: 47430

Unbreak build with gcc 4.3: provide missed includes and silence most annoying warnings.

llvm-svn: 47367

- When DAG combiner is folding a bit convert into a BUILD_VECTOR, it should check if it's essentially a SCALAR_TO_VECTOR. Avoid turning (v8i16) <10, u, u, u> to <10, 0, u, u, u, u, u, u>. Instead, si

- When DAG combiner is folding a bit convert into a BUILD_VECTOR, it should check if it's essentially a SCALAR_TO_VECTOR. Avoid turning (v8i16) <10, u, u, u> to <10, 0, u, u, u, u, u, u>. Instead, simply convert it to a SCALAR_TO_VECTOR of the proper type.
- X86 now normalize SCALAR_TO_VECTOR to (BIT_CONVERT (v4i32 SCALAR_TO_VECTOR)). Get rid of X86ISD::S2VEC.

llvm-svn: 47290

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llvm.memory.barrier, and impl for x86 and alpha

llvm-svn: 47204

Nuke dead comment

llvm-svn: 47114

Add a doxygen comment for SrcValueSDNode, to make its purpose
clear and to clarify how it differs from MemOperandSDNode.

llvm-svn: 47015