From 55a3be2f5255d69e740d61b2c5aaba1ccbc643b8 Mon Sep 17 00:00:00 2001 From: Richard Biener Date: Mon, 4 Oct 2021 10:57:45 +0200 Subject: tree-optimization/102570 - teach VN about internal functions We're now using internal functions for a lot of stuff but there's still missing VN support out of laziness. The following instantiates support and adds testcases for FRE and PRE (hoisting). 2021-10-04 Richard Biener PR tree-optimization/102570 * tree-ssa-sccvn.h (vn_reference_op_struct): Document we are using clique for the internal function code. * tree-ssa-sccvn.c (vn_reference_op_eq): Compare the internal function code. (print_vn_reference_ops): Print the internal function code. (vn_reference_op_compute_hash): Hash it. (copy_reference_ops_from_call): Record it. (visit_stmt): Remove the restriction around internal function calls. (fully_constant_vn_reference_p): Use fold_const_call and handle internal functions. (vn_reference_eq): Compare call return types. * tree-ssa-pre.c (create_expression_by_pieces): Handle generating calls to internal functions. (compute_avail): Remove the restriction around internal function calls. * gcc.dg/tree-ssa/ssa-fre-96.c: New testcase. * gcc.dg/tree-ssa/ssa-pre-33.c: Likewise. --- gcc/tree-ssa-sccvn.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'gcc/tree-ssa-sccvn.h') diff --git a/gcc/tree-ssa-sccvn.h b/gcc/tree-ssa-sccvn.h index 9610059..8a1b649 100644 --- a/gcc/tree-ssa-sccvn.h +++ b/gcc/tree-ssa-sccvn.h @@ -106,7 +106,8 @@ typedef const struct vn_phi_s *const_vn_phi_t; typedef struct vn_reference_op_struct { ENUM_BITFIELD(tree_code) opcode : 16; - /* Dependence info, used for [TARGET_]MEM_REF only. */ + /* Dependence info, used for [TARGET_]MEM_REF only. For internal + function calls clique is also used for the internal function code. */ unsigned short clique; unsigned short base; unsigned reverse : 1; -- cgit v1.1