Fixed lowering of v8i16 shuffles for v8i16 when we fall back to extract/insert.

llvm-svn: 61365

llvm-svn: 61356

constant shift count that doesn't fit in the shift instruction's
immediate field. This fixes PR3242.

llvm-svn: 61281

that have i32 immediates so that they get selected first. This
currently only matters in the JIT, as assemblers will
automatically use the smallest encoding.

llvm-svn: 61250

llvm-svn: 61244

The EH_frame and .eh symbols are now private, except for darwin9 and earlier.
The patch also fixes the definition of PrivateGlobalPrefix on pcc linux.

llvm-svn: 61242

used, mark the defs as dead.

llvm-svn: 61215

non-entry blocks, so that it doesn't appear use-before-def anywhere.

llvm-svn: 61214

llvm-svn: 61211

and the RegisterScavenger not to expect traditional liveness 
techniques are applicable to these registers, since we don't fully
modify the effects of push and pop after stackification.

llvm-svn: 61179

especially in the case of addresses computed from loop induction
variables.

llvm-svn: 61075

llvm-svn: 61033

comments about why we're not getting other cases.

llvm-svn: 61032

llvm-svn: 61028

llvm-svn: 61014

llvm-svn: 61013

  which are identical to the original patterns.

- Change the multiply with overflow so that we distinguish between signed and
  unsigned multiplication. Currently, unsigned multiplication with overflow
  isn't working!

llvm-svn: 60963

lowering f64 function arguments.

llvm-svn: 60944

Added support for TRUNC v8i16 to v8i8 for X86 (MMX)

llvm-svn: 60916

ISD::ADD to emit an implicit EFLAGS. This was horribly broken. Instead, replace
the intrinsic with an ISD::SADDO node. Then custom lower that into an
X86ISD::ADD node with a associated SETCC that checks the correct condition code
(overflow or carry). Then that gets lowered into the correct X86::ADDOvf
instruction.

Similar for SUB and MUL instructions.

llvm-svn: 60915

llvm-svn: 60901

llvm-svn: 60851

llvm-svn: 60850

Only perform SETO/SETC to JO/JC conversion if extractvalue is coming from an arithmetic with overflow instruction.

llvm-svn: 60844

Fix MachineCodeEmitter to use uintptr_t instead of intptr_t. This avoids some overflow issues. Patch by Thomas Jablin.

llvm-svn: 60828

llvm-svn: 60826

llvm-svn: 60821

- Fix bug 3185, with misc other cleanups.
- Needed to implement SPUInstrInfo::InsertBranch(). CAUTION: Not sure what
  gets or needs to get passed to InsertBranch() to insert a conditional
  branch. This will abort for now until a good test case shows up.

llvm-svn: 60811

overflow/carry from the "arithmetic with overflow" intrinsics. It searches the
machine basic block from bottom to top to find the SETO/SETC instruction that is
its conditional. If an instruction modifies EFLAGS before it reaches the
SETO/SETC instruction, then it defaults to the normal instruction emission.

llvm-svn: 60807

target-independent way of determining overflow on multiplication. It's very
tricky. Patch by Zoltan Varga!

llvm-svn: 60800

llvm-svn: 60755

llvm-svn: 60753

- Change default scheduling preference to list-burr, which produces somewhat
  better code than the default. Could also use list-tdrr, but need to ask
  dev list about the appropriate handy mnemonic before commiting.

llvm-svn: 60738

complete. For instance, it lowers the common case into this less-than-optimal
code:

        addl    %ecx, %eax
        seto    %cl
        testb   %cl, %cl
        jne     LBB1_2  ## overflow

instead of:

        addl    %ecx, %eax
        jo      LBB1_2  ## overflow

That will come in a future commit.

llvm-svn: 60737

for spotting these!

llvm-svn: 60728

llvm-svn: 60711

llvm-svn: 60705

and use it in x86 address mode folding. Also, make
getRegForValue return 0 for illegal types even if it has a
ValueMap for them, because Argument values are put in the
ValueMap. This fixes PR3181.

llvm-svn: 60696

llvm-svn: 60694

remove some more 64-bit divs and rems from the StructLayout 
ctor.

llvm-svn: 60692