llvm-svn: 47200

it actually does. Simplify CountOperands a little by reusing
ComputeMemOperandsEnd. And reword some comments for both.

llvm-svn: 47198

llvm-svn: 47196

tblgen will complain if a sign-extended constant does not fit into a
data type smaller than i32, e.g., i16. This causes a problem when certain
hex constants are used, such as 0xff for byte masks or immediate xor
values.

tblgen will try the sign-extended value first and, if the sign extended
value would overflow, it tries to see if the unsigned value will fit.
Consequently, a software developer can now safely incant:

	(XORHIr16 R16C:$rA, 0xffff)

which is somewhat clearer and more informative than incanting:

	(XORHIr16 R16C:$rA, (i16 -1))

even if the two are bitwise equivalent.

Tblgen also outputs the 64-bit unsigned constant in the generated ISel code
when getTargetConstant() is invoked.

llvm-svn: 47188

llvm-svn: 47179

we had reached the "fake bucket" after the last bucket, allowing the iterator
in some cases to run off the end of the hashtable.

llvm-svn: 47178

with the TIED_TO attribute.

llvm-svn: 47177

that should be checked for the TIED_TO attribute instead of
using CountOperands.

llvm-svn: 47176

in a ret node.  These are created as i32 constants
but on some platforms i32 is not legal.  This
fixes 26 "make check" failures, for example
Alpha/2005-07-12-TwoMallocCalls.ll.

llvm-svn: 47172

really really really need refactoring :(

llvm-svn: 47171

the global comment.  This prevents printing things like:

...  # foo
bar

when the name is "foo\nbar".

llvm-svn: 47170

when they occur in the name, just like " is escaped.

llvm-svn: 47169

llvm-svn: 47168

register defs and uses after each successful coalescing.
- Also removed a number of hacks and fixed some subtle kill information bugs.

llvm-svn: 47167

machine instr will change its definition register.

llvm-svn: 47166

llvm-svn: 47164

with a hard-coded operand number.

llvm-svn: 47163

that doesn't support it.  Per Chris.

llvm-svn: 47162

llvm-svn: 47161

llvm-svn: 47150

llvm-svn: 47149

llvm-svn: 47148

it follows the order of the enum, not alphabetical.
The motivation is to make -mattr=+ssse3,+sse41
select SSE41 as it ought to.  Added "ignored"
enum values of 0 to PPC and SPU to avoid compiler
warnings.

llvm-svn: 47143

Fixes PR 2030.

llvm-svn: 47141

being consistent with the rest of the APInt implementation.

llvm-svn: 47138

llvm-svn: 47129

llvm-svn: 47128

which allows us to kill a target-specific node.

llvm-svn: 47127

the return value is zero-extended if it isn't
sign-extended.  It may also be any-extended.
Also, if a floating point value was returned
in a larger floating point type, pass 1 as the
second operand to FP_ROUND, which tells it
that all the precision is in the original type.
I think this is right but I could be wrong.
Finally, when doing libcalls, set isZExt on
a parameter if it is "unsigned".  Currently
isSExt is set when signed, and nothing is
set otherwise.  This should be right for all
calls to standard library routines.

llvm-svn: 47122

1) ConstantFP is now expand by default
2) ConstantFP is not turned into TargetConstantFP during Legalize
   if it is legal.

This allows ConstantFP to be handled like Constant, allowing for 
targets that can encode FP immediates as MachineOperands.

As a bonus, fix up Itanium FP constants, which now correctly match,
and match more constants!  Hooray.

llvm-svn: 47121

FP Immediates, crazily enough

llvm-svn: 47117

llvm-svn: 47116

llvm-svn: 47115

llvm-svn: 47111

llvm-svn: 47109

llvm-svn: 47108

llvm-svn: 47107

llvm-svn: 47106

llvm-svn: 47101

size. Initialize these APInts to properly-sized zero values.

llvm-svn: 47099