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From: "bergner at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/98519] New: rs6000: @pcrel unsupported on this
 instruction error in pveclib
Date: Mon, 04 Jan 2021 22:12:55 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D98519

            Bug ID: 98519
           Summary: rs6000: @pcrel unsupported on this instruction error
                    in pveclib
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: bergner at gcc dot gnu.org
  Target Milestone: ---

Using latest GCC trunk and binutils trunk from today, we see the following
error on a reduced test case from pveclib:

bergner@pike:~/gcc/BUGS/PVECLIB$ cat bug.i
typedef __attribute__((altivec(vector__))) double vf64_t;
static double test_f64[16];
vf64_t
bug (void)
{
  vf64_t j0;
  __asm__("lxsd%X1 %0,%1;" : "=3Dv" (j0) : "m" (test_f64));
  return j0;
}

bergner@pike:~/gcc/BUGS/PVECLIB$
/home/bergner/gcc/build/gcc-fsf-mainline-pveclib-debug/gcc/xgcc
-B/home/bergner/gcc/build/gcc-fsf-mainline-pveclib-debug/gcc -c -O2
-mcpu=3Dpower10 bug.i
/tmp/ccNVSo9c.s: Assembler messages:
/tmp/ccNVSo9c.s:15: Warning: @pcrel unsupported on this instruction
/tmp/ccNVSo9c.s:15: Error: unsupported relocation for DS offset field
/tmp/ccNVSo9c.s:15: Error: missing operand

The problematic insn is:

        lxsd 2,.LANCHOR0@pcrel;=