llvm-svn: 52934

llvm-svn: 52933

llvm-svn: 52932

llvm-svn: 52931

llvm-svn: 52930

llvm-svn: 52929

SelectionDAG::allnodes_size is linear, but that doesn't appear to
outweigh the benefit of reducing heap traffic. If it does become a
problem, we should teach SelectionDAG to keep a count of how many
nodes are live, because there are several other places where that
information would be useful as well.

llvm-svn: 52926

llvm-svn: 52925

purpose, and give it a custom SDNode subclass so that it doesn't
need to have line number, column number, filename string, and
directory string, all existing as individual SDNodes to be the
operands.

This was the only user of ISD::STRING, StringSDNode, etc., so
remove those and some associated code.

This makes stop-points considerably easier to read in
-view-legalize-dags output, and reduces overhead (creating new
nodes and copying std::strings into them) on code containing
debugging information.

llvm-svn: 52924

llvm-svn: 52923

objects.  Fixes a couple of tests on Linux.

llvm-svn: 52921

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