[AVX] Implement 256-bit vector lowering for INSERT_VECTOR_ELT.

llvm-svn: 125187

[AVX] Implement BUILD_VECTOR lowering for 256-bit vectors.  For
anything but the simplest of cases, lower a 256-bit BUILD_VECTOR by
splitting it into 128-bit parts and recombining.

llvm-svn: 125105

[AVX] Insert/extract subvector lowering support.  This includes a
couple of utility functions that will be used in other places for more
AVX lowering.

llvm-svn: 125029

Target/X86: Tweak allocating shadow area (aka home) on Win64. It must be enough for caller to allocate one.

llvm-svn: 124949

llvm-svn: 124948

llvm-svn: 124947

llvm-svn: 124946

[AVX] Revert 124910 until clients are ready.

llvm-svn: 124912

[AVX] Add some utilities to insert and extract 128-bit subvectors.
This allows us to easily support 256-bit operations that don't have
native 256-bit support.  This applies to integer operations, certain
types of shuffles and various othher things.

llvm-svn: 124910

custom conversion functions).

llvm-svn: 124872

[AVX] Support VSINSERTF128 with more patterns and appropriate
infrastructure.  This makes lowering 256-bit vectors to 128-bit
vectors simple when 256-bit vector support is not available.

llvm-svn: 124868

[AVX] VEXTRACTF128 support.  This commit includes patterns for
matching EXTRACT_SUBVECTOR to VEXTRACTF128 along with support routines
to examine and translate index values.  VINSERTF128 comes next.  With
these two in place we can begin supporting more AVX operations as
INSERT/EXTRACT can be used as a fallback when 256-bit support is not
available.

llvm-svn: 124797

Reversing the operands allows us to fold, but doesn't force us to. Also, at
this point the DAG is still being optimized, so the check for hasOneUse is not
very precise.

llvm-svn: 124773

prefix would be misinterpreted in some cases on 32-bit
x86 platforms.  Thanks to Olivier Meurant for identifying
the bug.

llvm-svn: 124709

llvm-svn: 124652

llvm-svn: 124639

llvm-svn: 124611

[AVX] Clean up the code to configure target lowering for AVX.  Specify
how to lower more/new operations.  This is a prerequisite for adding
additional AVX lowering.

llvm-svn: 124447

Create override of this method in X86/ARM/MBlaze.

llvm-svn: 124378

CALL64 marks %xmm* as dead.

llvm-svn: 124354

[AVX] Add INSERT_SUBVECTOR and support it on x86.  This provides a
default implementation for x86, going through the stack in a similr
fashion to how the codegen implements BUILD_VECTOR.  Eventually this
will get matched to VINSERTF128 if AVX is available.

llvm-svn: 124307

[AVX] Support EXTRACT_SUBVECTOR on x86.  This provides a default
implementation of EXTRACT_SUBVECTOR for x86, going through the stack
in a similr fashion to how the codegen implements BUILD_VECTOR.
Eventually this will get matched to VEXTRACTF128 if AVX is available.

llvm-svn: 124292

llvm-svn: 124272

llvm-svn: 124270

llvm-svn: 124268

llvm-svn: 124267

llvm-svn: 124102

llvm-svn: 124077

clang's -Wuninitialized-experimental warning.
While these don't look like real bugs, clang's
-Wuninitialized-experimental analysis is stricter
than GCC's, and these fixes have the benefit
of being general nice cleanups.

llvm-svn: 124073

llvm-svn: 124056

llvm-svn: 124054

the flags.

llvm-svn: 123712

llvm-svn: 123670

into and/shift would cause nodes to move around and a dangling pointer
to happen.  The code tried to avoid this with a HandleSDNode, but 
got the details wrong.

llvm-svn: 123578

llvm-svn: 123560

multi-instruction sequences like calls.  Many thanks to Jakob for
finding a testcase.

llvm-svn: 123559

declaration and its assignments.

Found by clang static analyzer.

llvm-svn: 123486

Add a possibility to switch between CFI directives- and table-based frame description emission. Currently all the backends use table-based stuff.

llvm-svn: 123476

llvm-svn: 123475

llvm-gcc-i386-linux-selfhost buildbot heartburn...

llvm-svn: 123431