[Bug target/96649] New: parisc: very slow compilation when multiplying by a large constatnt

[mikulas at artax dot karlin.mff.cuni.cz]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96649

            Bug ID: 96649
           Summary: parisc: very slow compilation when multiplying by a
                    large constatnt
           Product: gcc
           Version: 10.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: mikulas at artax dot karlin.mff.cuni.cz
  Target Milestone: ---

This simple program takes 34 seconds to compile on 1GHz parisc machine.

#define GR_64 0x61C886f680B583EBULL

unsigned long long mul(unsigned long long x)
{
        return x * GR_64;
}