https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84431
Uroš Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2018-02-20
Assignee|unassigned at gcc dot gnu.org |ubizjak at gmail dot com
Ever confirmed|0 |1
--- Comment #3 from Uroš Bizjak <ubizjak at gmail dot com> ---
Created attachment 43471
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43471&action=edit
Prototype patch
Prototype patch, compiles the testcase to:
movl 4(%esp), %eax
movl 12(%esp), %ecx
movl 8(%esp), %edx
shldl %eax, %edx
sall %cl, %eax
ret
The patch also handles right shifts and cases where mask is less than 31 bits.
