diff options
Diffstat (limited to 'gcc/tree-vectorizer.c')
| -rw-r--r-- | gcc/tree-vectorizer.c | 25 |
1 files changed, 19 insertions, 6 deletions
diff --git a/gcc/tree-vectorizer.c b/gcc/tree-vectorizer.c index be2d6b3..8dba4d0 100644 --- a/gcc/tree-vectorizer.c +++ b/gcc/tree-vectorizer.c @@ -1851,10 +1851,17 @@ supportable_widening_operation (enum tree_code code, tree stmt, tree vectype, gcc_unreachable (); } - *code1 = c1; - *code2 = c2; - optab1 = optab_for_tree_code (c1, vectype); - optab2 = optab_for_tree_code (c2, vectype); + if (code == FIX_TRUNC_EXPR) + { + /* The signedness is determined from output operand. */ + optab1 = optab_for_tree_code (c1, type); + optab2 = optab_for_tree_code (c2, type); + } + else + { + optab1 = optab_for_tree_code (c1, vectype); + optab2 = optab_for_tree_code (c2, vectype); + } if (!optab1 || !optab2) return false; @@ -1867,6 +1874,8 @@ supportable_widening_operation (enum tree_code code, tree stmt, tree vectype, || insn_data[icode2].operand[0].mode != TYPE_MODE (wide_vectype)) return false; + *code1 = c1; + *code2 = c2; return true; } @@ -1918,8 +1927,11 @@ supportable_narrowing_operation (enum tree_code code, gcc_unreachable (); } - *code1 = c1; - optab1 = optab_for_tree_code (c1, vectype); + if (code == FIX_TRUNC_EXPR) + /* The signedness is determined from output operand. */ + optab1 = optab_for_tree_code (c1, type); + else + optab1 = optab_for_tree_code (c1, vectype); if (!optab1) return false; @@ -1929,6 +1941,7 @@ supportable_narrowing_operation (enum tree_code code, || insn_data[icode1].operand[0].mode != TYPE_MODE (narrow_vectype)) return false; + *code1 = c1; return true; } |