llvm-svn: 48648

the new StructType::get method.  The second NULL
is to pacify the gcc warning mechanism.  This
patch compiles but is otherwise untested.

llvm-svn: 48645

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

llvm-svn: 48639

x86-64 return conventions correct, but was never enabled.
We can now do the "right thing" with multiple return values.

llvm-svn: 48635

ST(0)/ST(1).

llvm-svn: 48634

llvm-svn: 48633

This allows us to compile fp-stack-2results.ll into:

_test:
	fldz
	fld1
	ret

which returns 1 in ST(0) and 0 in ST(1).  This is needed for x86-64
_Complex long double.

llvm-svn: 48632

simplify things like (X & 4) >> 1 == 2  --> (X & 4) == 4.

since it is obvious that the shift doesn't remove any bits.

llvm-svn: 48631

llvm-svn: 48627

This patch fixes Benchmarks/Trimaran/enc-pc1/enc-pc1 failure reported by Grawp-PIC i386 nightly tester

llvm-svn: 48623

- Fix loop nest.
- Use RetVals.size()
- Check for null return value.

llvm-svn: 48605

Patch by Erick Tryzelaar.

llvm-svn: 48602

llvm-svn: 48601

llvm-svn: 48588

llvm-svn: 48583

llvm-svn: 48580

llvm-svn: 48579

llvm-svn: 48578

llvm-svn: 48577

llvm-svn: 48576

Fix bugs encountered, mostly due to range matching for immediates;
the CellSPU's 10-bit immediates are sign extended, covering a
larger range of unsigned values.

llvm-svn: 48575

llvm-svn: 48573

llvm-svn: 48569

llvm-svn: 48567

llvm-svn: 48560

llvm-svn: 48556

llvm-svn: 48554

converting call result lowering to use the CallingConvLowering
infastructure.

llvm-svn: 48552

llvm-svn: 48545

Fix X86's isTruncateFree to not claim that truncate to i1 is free. This fixes Bill's testcase that failed for r48491.

llvm-svn: 48542

struct types.  Patch by David Chisnall, with some tweaks.

llvm-svn: 48531

llvm-svn: 48528

llvm-svn: 48526

Based on Erick Tryzelaar's patch.

llvm-svn: 48523

1. If part of a register is re-defined, an implicit kill and an implicit def are added to denote read / mod / write. However, this should only be necessary if the register is actually read later. This is a performance issue.
2. If a sub-register is being defined, and it doesn't have a previous use, do not add a implicit kill to the last use of a super-register:
   = EAX, AX<imp-use,kill>
...
AX =
In this case, EAX is live but AX is killed, this is wrong and will cause the coalescer to do bad things.

llvm-svn: 48521

llvm-svn: 48520

attribute instead of ".protected".

llvm-svn: 48516

Fix a x86-64 isel lowering bug that's been around forever. A x86-64 varargs function implicitly reads X86::AL, don't clobber it!

llvm-svn: 48515

llvm-svn: 48510