diff options
Diffstat (limited to 'gcc/simplify-rtx.cc')
| -rw-r--r-- | gcc/simplify-rtx.cc | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/gcc/simplify-rtx.cc b/gcc/simplify-rtx.cc index 276be67..21b7eb48 100644 --- a/gcc/simplify-rtx.cc +++ b/gcc/simplify-rtx.cc @@ -2131,6 +2131,20 @@ simplify_const_unary_operation (enum rtx_code code, machine_mode mode, result = wide_int::from (op0, width, UNSIGNED); break; + case US_TRUNCATE: + case SS_TRUNCATE: + { + signop sgn = code == US_TRUNCATE ? UNSIGNED : SIGNED; + wide_int nmax + = wide_int::from (wi::max_value (width, sgn), + GET_MODE_PRECISION (imode), sgn); + wide_int nmin + = wide_int::from (wi::min_value (width, sgn), + GET_MODE_PRECISION (imode), sgn); + result = wi::min (wi::max (op0, nmin, sgn), nmax, sgn); + result = wide_int::from (result, width, sgn); + break; + } case SIGN_EXTEND: result = wide_int::from (op0, width, SIGNED); break; |