diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ipa-icf-gimple.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/gcc/ipa-icf-gimple.c b/gcc/ipa-icf-gimple.c index ffb1bad..69bc9ab 100644 --- a/gcc/ipa-icf-gimple.c +++ b/gcc/ipa-icf-gimple.c @@ -245,6 +245,14 @@ func_checker::hash_operand (const_tree arg, inchash::hash &hstate, break; } + /* In gimple all clobbers can be considered equal: while comparaing two + gimple clobbers we match the left hand memory accesses. */ + if (TREE_CLOBBER_P (arg)) + { + hstate.add_int (0xc10bbe5); + return; + } + return operand_compare::hash_operand (arg, hstate, flags); } @@ -306,6 +314,10 @@ func_checker::operand_equal_p (const_tree t1, const_tree t2, default: break; } + /* In gimple all clobbers can be considered equal. We match the right hand + memory accesses. */ + if (TREE_CLOBBER_P (t1) || TREE_CLOBBER_P (t2)) + return TREE_CLOBBER_P (t1) == TREE_CLOBBER_P (t2); return operand_compare::operand_equal_p (t1, t2, flags); } |