llvm-6502/lib/Transforms
Dan Gohman 5be18e8476 Teach SCEVExpander to expand arithmetic involving pointers into GEP
instructions. It attempts to create high-level multi-operand GEPs,
though in cases where this isn't possible it falls back to casting
the pointer to i8* and emitting a GEP with that. Using GEP instructions
instead of ptrtoint+arithmetic+inttoptr helps pointer analyses that
don't use ScalarEvolution, such as BasicAliasAnalysis.

Also, make the AddrModeMatcher more aggressive in handling GEPs.
Previously it assumed that operand 0 of a GEP would require a register
in almost all cases. It now does extra checking and can do more
matching if operand 0 of the GEP is foldable. This fixes a problem
that was exposed by SCEVExpander using GEPs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72093 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-19 02:15:55 +00:00
..
Hello
Instrumentation
IPO Rename PaddedSize to AllocSize, in the hope that this 2009-05-09 07:06:46 +00:00
Scalar Teach SCEVExpander to expand arithmetic involving pointers into GEP 2009-05-19 02:15:55 +00:00
Utils Teach SCEVExpander to expand arithmetic involving pointers into GEP 2009-05-19 02:15:55 +00:00
Makefile I should definitely read make docs someday :( 2009-03-11 20:40:15 +00:00