https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61633
Bug ID: 61633
Summary: AArch64 SISD ASHR instruction split clobbers input
register.
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: mshawcroft at gcc dot gnu.org
The FFT code in Android AAC codec at -O2 is incorrectly compiled resulting in
an infinite loop. I've failed to reduce the test case to something usable but
the problem in the back end is clearly the define_splits associated with
*aarch64_ashr_sisd_or_int_<mode>3. Both of the splits inappropriately use one
of the input operand register as a scratch pad for the negated shift operand.
