it may round differently. This fixes PR4374.

llvm-svn: 73243

the relationship with MergeFunctions.cpp's isEquivalentOperation,
and make a trivial code reordering so that the two functions are
easier to compare.

Fix the name of Instruction::isSameOperationAs in MergeFunction.cpp's
isEquivalentOperation's comment, and fix a nearby 80-column violation.

llvm-svn: 73241

llvm-svn: 73235

out of sync with regular cc.

The only difference between the tail call cc and the normal
cc was that one parameter register - R9 - was reserved for
calling functions through a function pointer. After time the
tail call cc has gotten out of sync with the regular cc. 

We can use R11 which is also caller saved but not used as
parameter register for potential function pointers and
remove the special tail call cc on x86-64.

llvm-svn: 73233

llvm-svn: 73231

thunks.

llvm-svn: 73230

another thread.

llvm-svn: 73227

points to while analyzing all other fields.

Use FoldingSetNodeID to produce a good hash. This dramatically decreases run
times.

Emit thunks. This means that it can look at all functions regardless of what
the linkage is or if the address is taken, but unfortunately some small
functions can be even shorter than the thunk because our backend doesn't yet
realize it can just turn these into jumps. This means that this pass will
pessimize code on average.

llvm-svn: 73222

since functions may contain aggregate constants too.

llvm-svn: 73220

add a few suggestions from looking at some assembly code.

llvm-svn: 73210

llvm-svn: 73209

Emission for globals, using the correct data sections
Function alignment can be computed for each target using TargetELFWriterInfo
Some small fixes

llvm-svn: 73201

turned into unreachable.

llvm-svn: 73195

llvm-svn: 73194

llvm-svn: 73188

by cppcheck.

llvm-svn: 73187

llvm-svn: 73185

llvm-svn: 73184

llvm-svn: 73174

llvm-svn: 73164

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