[all-commits] [llvm/llvm-project] 16fb1c: [RISCV] Add i8/i16 test cases to div.ll and i8/i16...

[Craig Topper via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 16fb1c7aaeba9a7f22e4dcc8761b1cbf1fe524c1
      https://github.com/llvm/llvm-project/commit/16fb1c7aaeba9a7f22e4dcc8761b1cbf1fe524c1
  Author: Craig Topper <craig.topper at sifive.com>
  Date:   2021-02-04 (Thu, 04 Feb 2021)

  Changed paths:
    M llvm/test/CodeGen/RISCV/div.ll
    M llvm/test/CodeGen/RISCV/rem.ll

  Log Message:
  -----------
  [RISCV] Add i8/i16 test cases to div.ll and i8/i16/i64 to rem.ll. NFC

This improves our coverage of these operations and shows that we
use really large constants for division by constant on i8/i16
especially on RV64. The issue is that BuildSDIV/BuildUDIV are
limited to legal types so we have to promote to i64 before it
kicks in. At that point we've lost the range information for the
original type.