[Bug target/43514] use of SSE shift intrinsics introduces unnecessary moves to the stack and back

2018-03-26 Thread kretz at kde dot org
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43514 Matthias Kretz changed: What|Removed |Added Status|NEW |RESOLVED Resolution|---

[Bug target/43514] use of SSE shift intrinsics introduces unnecessary moves to the stack and back

2010-03-26 Thread rguenth at gcc dot gnu dot org
-- rguenth at gcc dot gnu dot org changed: What|Removed |Added Severity|minor |enhancement Keywords|

[Bug target/43514] use of SSE shift intrinsics introduces unnecessary moves to the stack and back

2010-03-26 Thread kretz at kde dot org
--- Comment #2 from kretz at kde dot org 2010-03-26 13:13 --- BTW, I think you should consider this as a bug, not enhancement. Because if the shift argument is = (1 32) the result of _mm_sll_epi64 differs from the expected result. Thus the code GCC generates could potentially hide a