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* [gcc(refs/users/pheeck/heads/sccp)] sccp handling was_noreturn and can_make_abnormal_goto
@ 2023-03-02 12:13 Filip Kastl
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From: Filip Kastl @ 2023-03-02 12:13 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:72b7332883ae3380f0e18280a89fa55ef00d0b2d
commit 72b7332883ae3380f0e18280a89fa55ef00d0b2d
Author: Filip Kastl <filip.kastl@gmail.com>
Date: Tue Feb 28 13:00:14 2023 +0100
sccp handling was_noreturn and can_make_abnormal_goto
Diff:
---
gcc/sccp.cc | 11 +++++++++--
gcc/tree-ssa-propagate.cc | 3 ++-
2 files changed, 11 insertions(+), 3 deletions(-)
diff --git a/gcc/sccp.cc b/gcc/sccp.cc
index 6c8791d8724..57c821a4f9c 100644
--- a/gcc/sccp.cc
+++ b/gcc/sccp.cc
@@ -455,6 +455,14 @@ replace_use_by (tree get_replaced, tree replace_by, bitmap need_eh_cleanup,
gimple *use_stmt;
FOR_EACH_IMM_USE_STMT (use_stmt, iter, get_replaced)
{
+ bool was_noreturn = false;
+ bool can_make_abnormal_goto = false;
+ if (is_gimple_call (use_stmt))
+ {
+ was_noreturn = gimple_call_noreturn_p (use_stmt);
+ can_make_abnormal_goto = stmt_can_make_abnormal_goto (use_stmt);
+ }
+
FOR_EACH_IMM_USE_ON_STMT (use_p, iter)
SET_USE (use_p, unshare_expr (replace_by));
@@ -472,8 +480,7 @@ replace_use_by (tree get_replaced, tree replace_by, bitmap need_eh_cleanup,
fold_stmt (&gsi);
cleanup_after_replace (use_stmt, gsi_stmt (gsi), need_eh_cleanup,
need_ab_cleanup, stmts_to_fixup,
- false, false);
- update_stmt (gsi_stmt (gsi));
+ can_make_abnormal_goto, was_noreturn);
}
}
diff --git a/gcc/tree-ssa-propagate.cc b/gcc/tree-ssa-propagate.cc
index e0eeae70ece..01e125bb873 100644
--- a/gcc/tree-ssa-propagate.cc
+++ b/gcc/tree-ssa-propagate.cc
@@ -909,7 +909,6 @@ substitute_and_fold_dom_walker::before_dom_children (basic_block bb)
can_make_abnormal_goto, was_noreturn);
/* Determine what needs to be done to update the SSA form. */
- update_stmt_if_modified (stmt);
if (!is_gimple_debug (stmt))
something_changed = true;
}
@@ -1316,6 +1315,8 @@ cleanup_after_replace (gimple *old_stmt, gimple *stmt, bitmap need_eh_cleanup,
if (TREE_CODE (rhs) == ADDR_EXPR)
recompute_tree_invariant_for_addr_expr (rhs);
}
+
+ update_stmt_if_modified (stmt);
}
/* TODO Comment. */
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