diff --git a/gcc/match.pd b/gcc/match.pd index ba83c69734f977ad40dfddfcd80030bfd8b70cef..3517605c04dc61be0c699933adee2f3a748bc915 100644 --- a/gcc/match.pd +++ b/gcc/match.pd @@ -2263,7 +2263,7 @@ DEFINE_INT_AND_FLOAT_ROUND_FN (RINT) /* (&a + b) !=/== (&a[1] + c) -> (&a[0] - &a[1]) + b !=/== c */ (for neeq (ne eq) (simplify - (neeq:c ADDR_EXPR@0 (pointer_plus ADDR_EXPR@2 @3)) + (neeq:c ADDR_EXPR@0 (pointer_plus @2 @3)) (with { poly_int64 diff; tree inner_type = TREE_TYPE (@3);} (if (ptr_difference_const (@0, @2, &diff)) (neeq { build_int_cst_type (inner_type, diff); } @3)))) diff --git a/gcc/testsuite/gcc.dg/tree-ssa/pr89317.c b/gcc/testsuite/gcc.dg/tree-ssa/pr89317.c index 0d0a049454f0c1de3a6618e2cd26dd7916f0e44d..0c8f2f53a4555994eea1b09be1127c5e480f154d 100644 --- a/gcc/testsuite/gcc.dg/tree-ssa/pr89317.c +++ b/gcc/testsuite/gcc.dg/tree-ssa/pr89317.c @@ -10,4 +10,21 @@ int foo (struct b *x) return b - a; } +int bar (struct b *x) +{ + int *a = x->data; + int *b = ((int*)x) + 4; + if (a != b) + return 1; + return 0; +} + +int baz (struct b *x) +{ + int *a = x->data; + int *b = ((int*)x) + 4; + return (a != b); +} + /* { dg-final { scan-tree-dump "return 4;" "ccp1" } } */ +/* { dg-final { scan-tree-dump-times "return 1;" 2 "ccp1" } } */ diff --git a/gcc/tree-ssa-ccp.cc b/gcc/tree-ssa-ccp.cc index 69fd7f1d11d86ad8708126dada43b02437280499..68e69bfe129b40756fd00448ca5af8e16998521b 100644 --- a/gcc/tree-ssa-ccp.cc +++ b/gcc/tree-ssa-ccp.cc @@ -1271,24 +1271,15 @@ valueize_op_1 (tree op) static tree ccp_fold (gimple *stmt) { - location_t loc = gimple_location (stmt); switch (gimple_code (stmt)) { - case GIMPLE_COND: - { - /* Handle comparison operators that can appear in GIMPLE form. */ - tree op0 = valueize_op (gimple_cond_lhs (stmt)); - tree op1 = valueize_op (gimple_cond_rhs (stmt)); - enum tree_code code = gimple_cond_code (stmt); - return fold_binary_loc (loc, code, boolean_type_node, op0, op1); - } - case GIMPLE_SWITCH: { /* Return the constant switch index. */ return valueize_op (gimple_switch_index (as_a <gswitch *> (stmt))); } + case GIMPLE_COND: case GIMPLE_ASSIGN: case GIMPLE_CALL: return gimple_fold_stmt_to_constant_1 (stmt,