llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-02-06 06:33:24 +00:00

History

Chris Lattner a6299345ee * Add capability to recognize alias properties of the following common cases:

- A[c1] cannot alias A[c2] where constants c1 != c2
  - A[i] cannot alias B[j] if A & B are provably different arrays

This should help out array based codes.  For example, from bzip2 from spec,
3 additional loads can be GCSE'd, and _21_ additional loads can be LICMd due
to this change.

In a test example from the Spec GAP benchmark (vecffe.c), this change allows
_52_ additional loads to be GCSE'd and _224_ additional LICM'd loads.

Not bad for such a simple change.  Other testcases show no change at all
because they just don't use arrays.  Not too suprising there.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3616 91177308-0d34-0410-b5e6-96231b3b80d8

2002-09-08 18:45:18 +00:00

DataStructure

Eliminated the MemAccessInst class, folding contents into GEP class.

2002-08-22 23:37:24 +00:00

IPA

- Do not expose ::ID from any of the analyses anymore.

2002-08-21 17:09:49 +00:00

LiveVar

- Do not expose ::ID from any of the analyses anymore.

2002-08-21 17:09:45 +00:00

AliasAnalysis.cpp

* Add capability to recognize alias properties of the following common cases: