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: 48585

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: 48562

llvm-svn: 48560

llvm-svn: 48556

llvm-svn: 48554

converting call result lowering to use the CallingConvLowering
infastructure.

llvm-svn: 48552

llvm-svn: 48550

llvm-svn: 48545

llvm-svn: 48543

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

llvm-svn: 48538

llvm-svn: 48536

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

llvm-svn: 48531

llvm-svn: 48530

llvm-svn: 48529

llvm-svn: 48528

llvm-svn: 48527

llvm-svn: 48526