[llvm-bugs] [Bug 46069] New: PPC back end missing vmsumud

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https://bugs.llvm.org/show_bug.cgi?id=46069

            Bug ID: 46069
           Summary: PPC back end missing vmsumud
           Product: libraries
           Version: 10.0
          Hardware: PC
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Backend: PowerPC
          Assignee: unassignedbugs at nondot.org
          Reporter: nemanja.i.ibm at gmail.com
                CC: llvm-bugs at lists.llvm.org, nemanja.i.ibm at gmail.com

As reported by a user of Clang on PPC, we have missed the implementation of
this instruction when we implemented the rest of the P9 instructions.

Test case:
vector long long test(vector long long a, vector long long b, vector long long
c) {
  vector long long res;
  __asm__("vmsumudm %0,%1,%2,%3;\n" : "=v"(res) : "v"(a), "v"(b), "v"(c) :);
  return res;
}

clang -mcpu=power9 -O t.c -S -o -
t.c:3:11: error: invalid instruction, did you mean: vmsumubm, vmsumuhm?
  __asm__("vmsumudm %0,%1,%2,%3;\n" : "=v"(res) : "v"(a), "v"(b), "v"(c) :);

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