llvm-svn: 73156

llvm-svn: 73152

identical function ConstantIsDead() to SafeToDestroyConstant(), to
emphasise the connection with Constant::destroyConstant().

llvm-svn: 73149

change.

llvm-svn: 73143

Add the beginnings of an implementatation of lazy liveness analysis, based on "Fast Liveness Checking for SSA-form Programs" by Boissinot, et al.

This is still very early, hasn't been tested, and is not yet well documented.  More to come soon.

llvm-svn: 73141

immediately casted. At present, this is just a minor code
simplification. In the future, the expansion code may be able
to make better choices if it knows what the desired result
type will be.

llvm-svn: 73137

PIC16 emits auto variables as globals. When optimizer removes a function entierly by estimating its side effects on globals, those globals(autos) without a function were not being printed by the Asm printer.

llvm-svn: 73135

llvm-svn: 73098

llvm-svn: 73097

ABI. The missing piece is support for putting "homogeneous aggregates"
into registers.

Patch by Sandeep Patel!

llvm-svn: 73095

llvm-svn: 73085

llvm-svn: 73080

llvm-svn: 73075

llvm-svn: 73040

llvm-svn: 73039

relocation sections.

llvm-svn: 73038

converting from an MMX vector to an i64.

llvm-svn: 73024

llvm-svn: 73017

Also create isValidElementType for ArrayType, PointerType, StructType and
VectorType.

Make LLParser use them. This closes up some holes like an assertion failure on:

  %x = type {label}

but largely doesn't change any semantics. The only thing we accept now which
we didn't before is vectors of opaque type such as "<4 x opaque>". The opaque
can be resolved to an int or float when linking.

llvm-svn: 73016

on x86 to handle more cases.  Fix a bug in said code that would cause it 
to read past the end of an object.  Rewrite the code in 
SelectionDAGLegalize::ExpandBUILD_VECTOR to be a bit more general. 
Remove PerformBuildVectorCombine, which is no longer necessary with 
these changes.  In addition to simplifying the code, with this change, 
we can now catch a few more cases of consecutive loads.

llvm-svn: 73012

crash LLVM first.

llvm-svn: 73011

llvm-svn: 73010

instructions.

llvm-svn: 73009

Fixes PR4314.

llvm-svn: 73007

sometimes it can find simplifications that won't be found otherwise.

llvm-svn: 73006

Instructions.

llvm-svn: 73002

SCEVCouldNotCompute, and not SCEVUnknown.

llvm-svn: 72999

types.

llvm-svn: 72993

llvm-svn: 72992

llvm-svn: 72991

nodes for vectors with an i16 element type.  Add an optimization for 
building a vector which is all zeros/undef except for the bottom 
element, where the bottom element is an i8 or i16.

llvm-svn: 72988

llvm-svn: 72987

llvm-svn: 72986

llvm-svn: 72985

conversions for x86, like <2 x i32> -> <2 x float> and <4 x i16> -> 
<4 x float>.

llvm-svn: 72983

llvm-svn: 72982

integer type to be consistent with normal operation legalization.  No visible
change because nothing is actually using this at the moment.

llvm-svn: 72980

llvm-svn: 72970

llvm-svn: 72969

llvm-svn: 72965