https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93533
Bug ID: 93533
Summary: [10 Regression] ICE due to popcounthi2 expansion with
-march=z196 since r10-3720
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: jakub at gcc dot gnu.org
Target Milestone: ---
The following testcase ICEs on s390x with -march=z196 -O2 (or any -O+) since
r10-3720-gac87f0f3459a57f03503e51aeffc54bb6ef36b90 :
unsigned
foo (unsigned short a)
{
a = a - (a >> 1 & 21845);
a = (a & 13107) + (a >> 2 & 13107);
return (unsigned short) ((a + (a >> 4) & 3855) * 257) >> 8;
}
The problem is in the popcounthi2_z196 expander that emits invalid RTL.
