Make the assignment operator for SmallPtrSet return a reference, and fix a long-standing bug in the copy
ctor while I'm at it.

Thanks to Chris Lattner for help with this patch.

llvm-svn: 38470

llvm-svn: 38469

updating it with calls to setIndexedLoadAction/setIndexedStoreAction,
which only update a few bits at a time. This avoids ostensible
undefined behavior of operationg on values which may be
trap-representations, and as a practical matter fixes errors from
valgrind, which doesn't track uninitialized memory with bit
granularity.

llvm-svn: 38468

Patch by Chis Lattner.

llvm-svn: 38467

zero if they see a target triple they don't understand.

llvm-svn: 38463

llvm-svn: 38460

llvm-svn: 38459

DAGCombiner.cpp: In member function 'llvm::SDOperand<unnamed>::DAGCombiner::visitOR(llvm::SDNode*)':
DAGCombiner.cpp:1608: warning: passing negative value '-0x00000000000000001' for argument 1 to 'llvm::SDOperand llvm::SelectionDAG::getConstant(uint64_t, llvm::MVT::ValueType, bool)'

oiy.

llvm-svn: 38458

use SCEVConstant::get instead of SCEVUnknown::get when constructing a SCEV
for a ConstantInt.

llvm-svn: 38457

llvm-svn: 38453

often.  This improves Anton's testcase from 36s to 32s.

llvm-svn: 38441

in the set.  For the moment, this results in a slight performance decrease, but
it lays the groundwork for future improvements.

llvm-svn: 38439

the same value number.  This fixes an infinite loop on 444.namd.

llvm-svn: 37967

llvm-svn: 37966

llvm-svn: 37965

llvm-svn: 37964

llvm-svn: 37962

llvm-svn: 37961

llvm-svn: 37960

llvm-svn: 37959

alias analysis, adding caching and lazy computation of queries.  This will
be used in planned improvements to memory access optimizations.

llvm-svn: 37958

llvm-svn: 37955

llvm-svn: 37954

llvm-svn: 37953

llvm-svn: 37952

for the GVN part of GVNPRE to apply.

llvm-svn: 37951

llvm-svn: 37950

critical edges be split before we begin.

llvm-svn: 37949

llvm-svn: 37948

so must be lowered to a value, not nothing at all.
Subtle point: I made eh_selector return 0 and
eh_typeid_for return 1.  This means that only
cleanups (destructors) will be run as the exception
unwinds [if eh_typeid_for returned 0 then it would
be as if the first catch always matched, and the
corresponding handler would be run], which is
probably want you want in the CBE.

llvm-svn: 37947

files.
bitcode files are the only LLVM format left.

llvm-svn: 37945

directly: they need to be turned into byte offsets
(often the same, but may not be if there are many
type infos).

llvm-svn: 37942

llvm-svn: 37940

Solaris 2.x does not have RLIMIT_RSS, check for this symbol (analog NetBSD below), should subsume Cygwin

llvm-svn: 37939

fix, that is adequate while PR1508 remains unresolved.

llvm-svn: 37938

instead.

llvm-svn: 37937

llvm-svn: 37936

llvm-svn: 37935

llvm-svn: 37934

llvm-svn: 37932