llvm-svn: 52920

SmallVectors. Change the signature of TargetLowering::LowerArguments
to avoid returning a vector by value, and update the two targets
which still use this directly, Sparc and IA64, accordingly.

llvm-svn: 52917

only needs one bit for each register. UsedRegs is a SmallVector
sized at 16, so this eliminates a heap allocation/free for every
call and return processed by Legalize on most targets.

llvm-svn: 52915

llvm-svn: 52907

fixes CodeGen/PowerPC/2008-06-19-LegalizerCrash.ll
when using the new LegalizeTypes infrastructure.

llvm-svn: 52903

wrong for types like x86 long double and i1, but
no worse than what is done in LegalizeDAG.

llvm-svn: 52898

llvm-svn: 52895

it impossible to create a MERGE_VALUES node with
only one result: sometimes it is useful to be able
to create a node with only one result out of one of
the results of a node with more than one result, for
example because the new node will eventually be used
to replace a one-result node using ReplaceAllUsesWith,
cf X86TargetLowering::ExpandFP_TO_SINT.  On the other
hand, most users of MERGE_VALUES don't need this and
for them the optimization was valuable.  So add a new
utility method getMergeValues for creating MERGE_VALUES
nodes which by default performs the optimization.
Change almost everywhere to use getMergeValues (and
tidy some stuff up at the same time).

llvm-svn: 52893

- Re-apply 52748 and friends with fix. GetConstantStringInfo() returns an empty string for ConstantAggregateZero case which surprises selectiondag.
- Correctly handle memcpy from constant string which is zero-initialized.

llvm-svn: 52891

llvm-svn: 52887

llvm-svn: 52885

Move GetConstantStringInfo to lib/Analysis. Remove
string output routine from Constant. Update all
callers. Change debug intrinsic api slightly to
accomodate move of routine, these now return values
instead of strings.

This unbreaks llvm-gcc bootstrap.

llvm-svn: 52884

Start refactoring of asmprinters: provide a TAI hook, which will select a 'section kind' for a global.

llvm-svn: 52868

llvm-svn: 52866

llvm-svn: 52865

llvm-svn: 52864

llvm-svn: 52863

llvm-svn: 52862

llvm-svn: 52861

llvm-svn: 52860

llvm-svn: 52859

Make intel asmprinter child of generic asmprinter, not x86 shared asm printer. This leads to some code duplication, which will be resolved later.

llvm-svn: 52858

llvm-svn: 52857

llvm-svn: 52856

llvm-svn: 52854

GetConstantStringInfo.  This will hopefully restore llvm-gcc to 
happy bootstrap land.

llvm-svn: 52851

llvm-svn: 52850

information of the original load or store, which is checked to be
at least as good, and possibly better.

llvm-svn: 52849

llvm-svn: 52847

llvm-svn: 52841

thrash the heap with string stuff (e.g. utostr).

llvm-svn: 52838

llvm-svn: 52837

llvm-svn: 52836

of a std::string.  This avoids copying the string to the heap in common
cases.  Patch by Pratik Solanki!

llvm-svn: 52834

llvm-svn: 52829

Patch by Gary Benson!

llvm-svn: 52828

match normal naming scheme.

llvm-svn: 52820

This speeds up a particular testcase from 0.0302s to 0.0222s in LiveVariables.

llvm-svn: 52819

This speeds up LiveVariables from 0.6279s to 0.6165s on kimwitu++.

llvm-svn: 52818

tolerate a non-nul-terminated string, and handling a direct global 
reference.

llvm-svn: 52813