llvm-mirror

mirror of https://github.com/RPCS3/llvm-mirror.git synced 2025-03-07 03:47:20 +00:00

History

Chris Lattner 14d51ed06a This is a bulk commit that implements the following primary improvements:

* We can now fold cast instructions into select instructions that
    have at least one constant operand.
  * We now optimize expressions more aggressively based on bits that are
    known to be zero.  These optimizations occur a lot in code that uses
    bitfields even in simple ways.
  * We now turn more cast-cast sequences into AND instructions.  Before we
    would only do this if it if all types were unsigned.  Now only the
    middle type needs to be unsigned (guaranteeing a zero extend).
  * We transform sign extensions into zero extensions in several cases.

This corresponds to these test/Regression/Transforms/InstCombine testcases:
  2004-11-22-Missed-and-fold.ll
  and.ll: test28-29
  cast.ll: test21-24
  and-or-and.ll
  cast-cast-to-and.ll
  zeroext-and-reduce.ll

llvm-svn: 19220

2005-01-01 16:22:27 +00:00

Analysis

Wrap at 80 cols

2004-12-23 21:17:41 +00:00

AsmParser

Do not allow empty label names.

2004-12-10 05:40:19 +00:00

Bytecode

Remove potential platform portability issue with size of "int".

2004-12-29 01:20:24 +00:00

CodeGen

Move virtual method call out of loop