http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49002
Summary: 128-bit AVX load incorrectly becomes 256-bit AVX load
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
--- Additional Comments From athena at fftw dot org 2005-02-16 20:44
---
> Unfortunately, I doubt whether it'll be possible to siumultaneously address
> this performance regression without reintroducing the 3.x issue mentioned in
> the original "PS". I doubt
--- Additional Comments From athena at fftw dot org 2005-02-16 20:37
---
(In reply to comment #3)
> Ok, this is the patch which caused this code generation regression:
> 2004-02-07 Roger Sayle <[EMAIL PROTECTED]>
>
> * fold-const.c (negate_expr_p, negate_exp
