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| author | Richard Guenther <rguenther@suse.de> | 2009-04-17 18:16:51 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2009-04-17 18:16:51 +0000 |
| commit | 7c3e9dc3ec5530773206a7a9c673f437d9ca0054 (patch) | |
| tree | b1efe2b33b558bac034ca5ab5c1f4a74c8905f39 /gcc | |
| parent | aca600aaf96fc061671829703b50ec8c6acae2c0 (diff) | |
| download | gcc-7c3e9dc3ec5530773206a7a9c673f437d9ca0054.zip gcc-7c3e9dc3ec5530773206a7a9c673f437d9ca0054.tar.gz gcc-7c3e9dc3ec5530773206a7a9c673f437d9ca0054.tar.bz2 | |
tree-ssa-forwprop.c (get_prop_dest_stmt): Clean up tuplification.
2009-04-17 Richard Guenther <rguenther@suse.de>
* tree-ssa-forwprop.c (get_prop_dest_stmt): Clean up
tuplification.
(get_prop_source_stmt): Likewise.
(can_propagate_from): Likewise.
From-SVN: r146281
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/tree-ssa-forwprop.c | 19 |
2 files changed, 16 insertions, 10 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 69aaa37..c3c34e9 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2009-04-17 Richard Guenther <rguenther@suse.de> + + * tree-ssa-forwprop.c (get_prop_dest_stmt): Clean up + tuplification. + (get_prop_source_stmt): Likewise. + (can_propagate_from): Likewise. + 2009-04-17 Andrew Stubbs <ams@codesourcery.com> * configure.ac: Add new AC_SUBST for TM_ENDIAN_CONFIG, diff --git a/gcc/tree-ssa-forwprop.c b/gcc/tree-ssa-forwprop.c index f75e0af..c596e8b 100644 --- a/gcc/tree-ssa-forwprop.c +++ b/gcc/tree-ssa-forwprop.c @@ -186,8 +186,7 @@ get_prop_dest_stmt (tree name, tree *final_name_p) return NULL; /* If this is not a trivial copy, we found it. */ - if (!gimple_assign_copy_p (use_stmt) - || TREE_CODE (gimple_assign_lhs (use_stmt)) != SSA_NAME + if (!gimple_assign_ssa_name_copy_p (use_stmt) || gimple_assign_rhs1 (use_stmt) != name) break; @@ -225,12 +224,11 @@ get_prop_source_stmt (tree name, bool single_use_only, bool *single_use_p) } /* If name is defined by a PHI node or is the default def, bail out. */ - if (gimple_code (def_stmt) != GIMPLE_ASSIGN) + if (!is_gimple_assign (def_stmt)) return NULL; - /* If name is not a simple copy destination, we found it. */ - if (!gimple_assign_copy_p (def_stmt) - || TREE_CODE (gimple_assign_rhs1 (def_stmt)) != SSA_NAME) + /* If def_stmt is not a simple copy, we possibly found it. */ + if (!gimple_assign_ssa_name_copy_p (def_stmt)) { tree rhs; @@ -266,6 +264,7 @@ can_propagate_from (gimple def_stmt) ssa_op_iter iter; gcc_assert (is_gimple_assign (def_stmt)); + /* If the rhs has side-effects we cannot propagate from it. */ if (gimple_has_volatile_ops (def_stmt)) return false; @@ -276,8 +275,8 @@ can_propagate_from (gimple def_stmt) return false; /* Constants can be always propagated. */ - if (is_gimple_min_invariant - (rhs_to_tree (TREE_TYPE (gimple_assign_lhs (def_stmt)), def_stmt))) + if (gimple_assign_single_p (def_stmt) + && is_gimple_min_invariant (gimple_assign_rhs1 (def_stmt))) return true; /* We cannot propagate ssa names that occur in abnormal phi nodes. */ @@ -289,14 +288,14 @@ can_propagate_from (gimple def_stmt) then we can not apply optimizations as some targets require function pointers to be canonicalized and in this case this optimization could eliminate a necessary canonicalization. */ - if (is_gimple_assign (def_stmt) - && (CONVERT_EXPR_CODE_P (gimple_assign_rhs_code (def_stmt)))) + if (CONVERT_EXPR_CODE_P (gimple_assign_rhs_code (def_stmt))) { tree rhs = gimple_assign_rhs1 (def_stmt); if (POINTER_TYPE_P (TREE_TYPE (rhs)) && TREE_CODE (TREE_TYPE (TREE_TYPE (rhs))) == FUNCTION_TYPE) return false; } + return true; } |