close to their sources to facilitate coalescing.

llvm-svn: 114631

when the unconditional branch destination is the fallthrough block. The
canonicalization makes it easier to allow optimizations on DAGs to invert
conditional branches. The branch folding pass (and AnalyzeBranch) will clean up
the unnecessary unconditional branches later.

This is one of the patches leading up to disabling codegen prepare critical edge
splitting.

llvm-svn: 114630

Moved the PBQP allocator class out of the header and back in to the cpp file to hide the gory details.
Allocator instances can now be created by calling createPBQPRegisterAllocator.

Tidied up use of CoalescerPair as per Jakob's suggestions.

Made the new PBQPBuilder based construction process the default. The internal construction process
remains in-place and available via -pbqp-builder=false for now. It will be removed shortly if the new
process doesn't cause any regressions.

llvm-svn: 114626

because of the lack of a newline, AsmToken::Eof
was being found instead of AsmToken::EndOfStatement.

llvm-svn: 114621

new VariantKind to the MCSymbolExpr seems like overkill, but I'm not sure
there's a more straightforward way to get the printing difference captured.
(i.e., x86 uses @PLT, ARM uses (PLT)).

llvm-svn: 114613

llvm-svn: 114601

lowered using a series of shifts.
Fixes <rdar://problem/8285015>.

llvm-svn: 114599

llvm-svn: 114597

CombineTo to avoid putting the result on the worklist.  I don't think it makes
much difference for now, but it might help someday as we add more DAG
combine optimizations.

llvm-svn: 114595

llvm-svn: 114594

llvm-svn: 114592

of those.  Refactor to share code for handling BUILD_VECTOR(VMOVRRD).
I don't have a testcase that exercises this, but it seems like an obvious
good thing to do.

llvm-svn: 114589

llvm-svn: 114588

llvm-svn: 114585

llvm-svn: 114578

needs to happen for darwin.

llvm-svn: 114577

llvm-svn: 114576

llvm-svn: 114570

truncates are free only in the case where the extended type is legal but the
load type is not.  If both types are illegal, such as when they are too big,
the load may not be legalized into an extended load.

llvm-svn: 114568

llvm-svn: 114563

llvm-svn: 114561

llvm-svn: 114560

end up altering the thread on which crashes are done because of its use of
Darwin's broken raise() implementation.

llvm-svn: 114558

llvm-svn: 114556

llvm-svn: 114555

ARM cross-compiler on x86, because the MMO size did not match the type size.
This fixes the MMO size and also the size of the stack object to match the
type size.

llvm-svn: 114554

llvm-svn: 114553

llvm-svn: 114550

llvm-svn: 114536

x86-32: 32-bit calls were named "call" not "calll".  64-bit calls were correctly
named "callq", so this only impacted x86-32.

This fixes rdar://8456370 - llvm-mc rejects 'calll'

This also exposes that mingw/64 is generating a 32-bit call instead of a 64-bit call,
I will file a bugzilla.

llvm-svn: 114534

Teaching the code generator about CR8-15, how to rex them up, etc.

llvm-svn: 114533

llvm-svn: 114532

llvm-svn: 114531

llvm-svn: 114529

llvm-svn: 114528

-This line, and those below, will be ignored--

M    test/MC/AsmParser/X86/x86_instructions.s
M    lib/Target/X86/AsmParser/X86AsmParser.cpp

llvm-svn: 114527

llvm-svn: 114526

llvm-svn: 114523

can access the stack due to how it is generated though.

llvm-svn: 114522

used with stack slots, but hey, lets be safe.

llvm-svn: 114521