llvm-svn: 126103

llvm-svn: 126101

on Core 2 and Nehalem, so the code we generate is better than GCC's here.

llvm-svn: 126100

of a constant had a minor typo introduced when copying it from the book, which
caused it to favor negative approximations over positive approximations in many
cases. Positive approximations require fewer operations beyond the multiplication.

In the case of division by 3, we still generate code that is a single instruction
larger than GCC's code.

llvm-svn: 126097

since one needs to be a register operand. Just use movss instead of forcing
an operand into a register.

Fixes PR9239

llvm-svn: 126072

of testing for its presence at cmake time.

This way the build automatically regenerates the makefiles when a svn
update brings in a new sublibrary.

llvm-svn: 126068

llvm-svn: 126054

This is reasonable to do since all bt-mem forms do the
same thing.

llvm-svn: 126047

llvm-svn: 126018

llvm-svn: 126004

llvm-svn: 125978

llvm-svn: 125968

query about available library functions.  For now this just has 
memset_pattern16, which exists on darwin, but it can be extended for a 
bunch of other things in the future.

llvm-svn: 125965

llvm-svn: 125949

testcases for the disassembler to make sure it still works for "msr".

llvm-svn: 125948

llvm-svn: 125832

llvm-svn: 125805

Validate encoding of leave in 64bit mode.

llvm-svn: 125795

[AVX] Recorganize X86ShuffleDecode into its own library
(LLVMX86Utils.a) to break cyclic library dependencies between
LLVMX86CodeGen.a and LLVMX86AsmParser.a.  Previously this code was in
a header file and marked static but AVX requires some additional
functionality here that won't be used by all clients.  Since including
unused static functions causes a gcc compiler warning, keeping it as a
header would break builds that use -Werror.  Putting this in its own
library solves both problems at once.

llvm-svn: 125765

these patterns.

llvm-svn: 125759

No one uses *-mingw64. mingw-w64 is represented as {i686|x86_64}-w64-mingw32. In llvm side, i686 and x64 can be treated as similar way.

llvm-svn: 125747

llvm-svn: 125746

llvm-svn: 125738

llvm-svn: 125702

llvm-svn: 125681

other getNode() methods.  Radar 9002173.

llvm-svn: 125665

llvm-svn: 125660

llvm-svn: 125659

llvm-svn: 125658

llvm-svn: 125629

Some single precision VFP instructions may be executed on NEON pipeline, but not double precision ones.

llvm-svn: 125624

This is necessary to avoid a crash in certain tangled situations where a kill
flag is first correctly moved to a merged instruction, and then needs to be
moved again:

  STR %R0, a...
  STR %R0<kill>, b...

First becomes:

  STR %R0, b...
  STM a, %R0<kill>, ...

and then:

  STM a, %R0, ...
  STM b, %R0<kill>, ...

We can now remove the kill flag from the merged STM when needed. 8960050.

llvm-svn: 125591

llvm-svn: 125563

llvm-svn: 125534

llvm-svn: 125521

- Add custom operand matching for imod and iflags.
- Rename SplitMnemonicAndCC to SplitMnemonic since it splits more than CC
  from mnemonic.
- While adding ".w" as an operand, don't change "Head" to avoid passing the
  wrong mnemonic to ParseOperand.
- Add asm parser tests.
- Add disassembler tests just to make sure it can catch all cps versions.

llvm-svn: 125489

have their low bits set to zero.  This allows us to optimize
out explicit stack alignment code like in stack-align.ll:test4 when
it is redundant.

Doing this causes the code generator to start turning FI+cst into
FI|cst all over the place, which is general goodness (that is the
canonical form) except that various pieces of the code generator
don't handle OR aggressively.  Fix this by introducing a new
SelectionDAG::isBaseWithConstantOffset predicate, and using it
in places that are looking for ADD(X,CST).  The ARM backend in
particular was missing a lot of addressing mode folding opportunities
around OR.

llvm-svn: 125470

These are just FXSAVE and FXRSTOR with REX.W prefixes.  These versions use
64-bit pointer values instead of 32-bit pointer values in the memory map they
dump and restore.

llvm-svn: 125446

llvm-svn: 125444

llvm-svn: 125438