From fd12afe977eb820f18c597fb29904d83904240ea Mon Sep 17 00:00:00 2001
From: amacleod <amacleod@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Fri, 30 Sep 2005 14:33:53 +0000
Subject: 2005-09-30 Andrew Macleod <amacleod@redat.com>
PR tree-optimization/21430
* tree-ssa-operands.c (set_virtual_use_link): New. Link new virtual
use operands, and set stmt pointer if need be.
(FINALIZE_CORRECT_USE: New. Macro to call appropriate use fixup routine.
tree-ssa-opfinalize.h (FINALIZE_FUNC): Call FINALIZE_CORRECT_USE if
present.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@104816 138bc75d-0d04-0410-961f-82ee72b054a4
---
gcc/tree-ssa-operands.c | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
(limited to 'gcc/tree-ssa-operands.c')
diff --git a/gcc/tree-ssa-operands.c b/gcc/tree-ssa-operands.c
index 5b1e4454e4d..1c592573e81 100644
--- a/gcc/tree-ssa-operands.c
+++ b/gcc/tree-ssa-operands.c
@@ -511,6 +511,24 @@ correct_use_link (use_operand_p ptr, tree stmt)
}
+/* This routine makes sure that PTR is in an immediate use list, and makes
+ sure the stmt pointer is set to the current stmt. Virtual uses do not need
+ the overhead of correct_use_link since they cannot be directly manipulated
+ like a real use can be. (They don't exist in the TREE_OPERAND nodes.) */
+static inline void
+set_virtual_use_link (use_operand_p ptr, tree stmt)
+{
+ /* Fold_stmt () may have changed the stmt pointers. */
+ if (ptr->stmt != stmt)
+ ptr->stmt = stmt;
+
+ /* If this use isn't in a list, add it to the correct list. */
+ if (!ptr->prev)
+ link_imm_use (ptr, *(ptr->use));
+}
+
+
+
#define FINALIZE_OPBUILD build_defs
#define FINALIZE_OPBUILD_BASE(I) opbuild_elem_real (&build_defs, (I))
#define FINALIZE_OPBUILD_ELEM(I) opbuild_elem_real (&build_defs, (I))
@@ -553,6 +571,7 @@ finalize_ssa_defs (tree stmt)
#define FINALIZE_ELEM(PTR) ((PTR)->use_ptr.use)
#define FINALIZE_OPS USE_OPS
#define FINALIZE_USE_PTR(PTR) USE_OP_PTR (PTR)
+#define FINALIZE_CORRECT_USE correct_use_link
#define FINALIZE_BASE(VAR) VAR
#define FINALIZE_BASE_TYPE tree *
#define FINALIZE_BASE_ZERO NULL
@@ -596,6 +615,7 @@ finalize_ssa_uses (tree stmt)
#define FINALIZE_ELEM(PTR) MAYDEF_RESULT (PTR)
#define FINALIZE_OPS MAYDEF_OPS
#define FINALIZE_USE_PTR(PTR) MAYDEF_OP_PTR (PTR)
+#define FINALIZE_CORRECT_USE set_virtual_use_link
#define FINALIZE_BASE_ZERO 0
#define FINALIZE_BASE(VAR) ((TREE_CODE (VAR) == SSA_NAME) \
? DECL_UID (SSA_NAME_VAR (VAR)) : DECL_UID ((VAR)))
@@ -647,6 +667,7 @@ cleanup_v_may_defs (void)
#define FINALIZE_ELEM(PTR) VUSE_OP (PTR)
#define FINALIZE_OPS VUSE_OPS
#define FINALIZE_USE_PTR(PTR) VUSE_OP_PTR (PTR)
+#define FINALIZE_CORRECT_USE set_virtual_use_link
#define FINALIZE_BASE_ZERO 0
#define FINALIZE_BASE(VAR) ((TREE_CODE (VAR) == SSA_NAME) \
? DECL_UID (SSA_NAME_VAR (VAR)) : DECL_UID ((VAR)))
@@ -740,6 +761,7 @@ finalize_ssa_vuses (tree stmt)
#define FINALIZE_ELEM(PTR) MUSTDEF_RESULT (PTR)
#define FINALIZE_OPS MUSTDEF_OPS
#define FINALIZE_USE_PTR(PTR) MUSTDEF_KILL_PTR (PTR)
+#define FINALIZE_CORRECT_USE set_virtual_use_link
#define FINALIZE_BASE_ZERO 0
#define FINALIZE_BASE(VAR) ((TREE_CODE (VAR) == SSA_NAME) \
? DECL_UID (SSA_NAME_VAR (VAR)) : DECL_UID ((VAR)))
--
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