[Bug c/38011] New: vectorizer ignores alignment, useless versioning

: UNCONFIRMED Severity: minor Priority: P3 Component: c AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: David dot Monniaux at ens dot fr GCC build triplet: i486-linux-gnu GCC host triplet: i486-linux-gnu GCC target triplet: i486-linux-gnu http

[Bug target/25413] wrong alignment or incorrect address computation in vectorized code on Pentium 4 SSE

--- Comment #16 from David dot Monniaux at ens dot fr 2007-07-24 21:21 --- (In reply to comment #13) David, can you confirm that this PR can now be closed? I'm no seeing the bug any longer when compiling/testing the octagon library. This does not imply, though, that it no longer

[Bug rtl-optimization/323] optimized code gives strange floating point results

--- Comment #96 from David dot Monniaux at ens dot fr 2007-04-20 21:19 --- The following paper explains how this kind of behaviour occurs, why it is correct, why it is difficult to fix but how it can be partly fixed, and how this breaks many testing and proving techniques: http

[Bug tree-optimization/25881] New: unsigned int loop indices are not accepted by the vectorizer

: unassigned at gcc dot gnu dot org ReportedBy: David dot Monniaux at ens dot fr GCC build triplet: x86_64-unknown-linux-gnu GCC host triplet: x86_64-unknown-linux-gnu GCC target triplet: x86_64-unknown-linux-gnu http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25881

[Bug tree-optimization/25413] New: wrong alignment or incorrect address computation in vectorized code on Pentium 4 SSE

on Pentium 4 SSE Product: gcc Version: 4.0.3 Status: UNCONFIRMED Severity: normal Priority: P3 Component: tree-optimization AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: David dot Monniaux at ens dot fr GCC

[Bug target/25413] wrong alignment or incorrect address computation in vectorized code on Pentium 4 SSE

--- Comment #1 from David dot Monniaux at ens dot fr 2005-12-14 15:26 --- Created an attachment (id=10486) -- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=10486action=view) preprocessed C source code (assumes Linux glibc) exhibiting the code generation bug Compile this program

[Bug c/25371] New: -ftree-vectorize results in internal compiler error on AMD64

: unassigned at gcc dot gnu dot org ReportedBy: David dot Monniaux at ens dot fr GCC build triplet: x86_64-redhat-linux GCC host triplet: x86_64-redhat-linux GCC target triplet: x86_64-redhat-linux http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25371

[Bug tree-optimization/25371] -ftree-vectorize results in internal compiler error on AMD64

--- Comment #1 from David dot Monniaux at ens dot fr 2005-12-12 16:24 --- The above error message was for 4.0.1. On 4.0.2 it's gimplify.c:4186. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25371