Revert "[SLP] Make getSameOpcode support interchangeable instructions. (#127450)"

This reverts commit 71a0cfd93263552ddc0bfd2ea7b0abe9a578f87e.

This commit triggers failed asserts when compiling ffmpeg. The
issue is reproducible with a small standalone reproducer like this:

    void make_filters_from_proto(int *filter[][2], int bands) {
      int c, q, n;
      for (;; q++) {
        n = 0;
        for (; n < 7; n++) {
          int theta = (q * (n - 6) + (n >> 1) - 3) % bands;
          if (theta)
            c = theta;
          filter[q][n][0] = c;
        }
      }
    }

$ clang -target x86_64-linux-gnu -c repro.c -O3
clang: ../lib/Transforms/Vectorize/SLPVectorizer.cpp:989: llvm::SmallVector<llvm
::Value*> {anonymous}::BinOpSameOpcodeHelper::InterchangeableInfo::getOperand(ll
vm::Instruction*) const: Assertion `FromCIValue.isZero() && "Cannot convert the
instruction."' failed.

The same issue also reproduces for a large number of other target
triples, aarch64-linux-gnu and others.

0 files changed, 0 insertions, 0 deletions