[all-commits] [llvm/llvm-project] 85e31e: [DAGCombiner] Relax an assertion to an early return

[Fraser Cormack via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 85e31eddf216181c6b8b26bca760f3395d621f9a
      https://github.com/llvm/llvm-project/commit/85e31eddf216181c6b8b26bca760f3395d621f9a
  Author: Fraser Cormack <fraser at codeplay.com>
  Date:   2021-05-17 (Mon, 17 May 2021)

  Changed paths:
    M llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
    A llvm/test/CodeGen/RISCV/rvv/select-sra.ll

  Log Message:
  -----------
  [DAGCombiner] Relax an assertion to an early return

The select-of-constants transform was asserting that its constant vector
inputs did not implicitly truncate their input without that as an
explicit precondition to the function. This patch relaxes that assertion
into an early return to skip the optimization.

Reviewed By: RKSimon

Differential Revision: https://reviews.llvm.org/D102393