public inbox for gcc-cvs@sourceware.org
help / color / mirror / Atom feed
* [gcc/devel/rust/master] rust-constexpr.cc: add few more cases to eval_constant_expression()
@ 2022-08-29 15:34 Thomas Schwinge
0 siblings, 0 replies; only message in thread
From: Thomas Schwinge @ 2022-08-29 15:34 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:6b440d46f16e3f93dd979852a1aab55f88add75f
commit 6b440d46f16e3f93dd979852a1aab55f88add75f
Author: Faisal Abbas <90.abbasfaisal@gmail.com>
Date: Sat Aug 6 16:24:30 2022 +0100
rust-constexpr.cc: add few more cases to eval_constant_expression()
Diff:
---
gcc/rust/backend/rust-constexpr.cc | 60 ++++++++++++++++++++++++++++++++++++++
1 file changed, 60 insertions(+)
diff --git a/gcc/rust/backend/rust-constexpr.cc b/gcc/rust/backend/rust-constexpr.cc
index 14c2969dcba..6f645beba45 100644
--- a/gcc/rust/backend/rust-constexpr.cc
+++ b/gcc/rust/backend/rust-constexpr.cc
@@ -1730,6 +1730,31 @@ eval_constant_expression (const constexpr_ctx *ctx, tree t, bool lval,
break;
}
+ case COMPOUND_EXPR: {
+ /* check_return_expr sometimes wraps a TARGET_EXPR in a
+ COMPOUND_EXPR; don't get confused. Also handle EMPTY_CLASS_EXPR
+ introduced by build_call_a. */
+ tree op0 = TREE_OPERAND (t, 0);
+ tree op1 = TREE_OPERAND (t, 1);
+ STRIP_NOPS (op1);
+ if ((TREE_CODE (op0) == TARGET_EXPR && op1 == TARGET_EXPR_SLOT (op0))
+ || TREE_CODE (op1) == EMPTY_CLASS_EXPR)
+ r = eval_constant_expression (ctx, op0, lval, non_constant_p,
+ overflow_p, jump_target);
+ else
+ {
+ /* Check that the LHS is constant and then discard it. */
+ eval_constant_expression (ctx, op0, true, non_constant_p,
+ overflow_p, jump_target);
+ if (*non_constant_p)
+ return t;
+ op1 = TREE_OPERAND (t, 1);
+ r = eval_constant_expression (ctx, op1, lval, non_constant_p,
+ overflow_p, jump_target);
+ }
+ }
+ break;
+
case REALPART_EXPR:
case IMAGPART_EXPR:
if (lval)
@@ -1817,6 +1842,41 @@ eval_constant_expression (const constexpr_ctx *ctx, tree t, bool lval,
overflow_p);
break;
+ case TRY_CATCH_EXPR:
+ if (TREE_OPERAND (t, 0) == NULL_TREE)
+ {
+ r = void_node;
+ break;
+ }
+ r = eval_constant_expression (ctx, TREE_OPERAND (t, 0), lval,
+ non_constant_p, overflow_p, jump_target);
+ break;
+
+ case CLEANUP_POINT_EXPR: {
+ auto_vec<tree, 2> cleanups;
+ vec<tree> *prev_cleanups = ctx->global->cleanups;
+ ctx->global->cleanups = &cleanups;
+ r = eval_constant_expression (ctx, TREE_OPERAND (t, 0), lval,
+ non_constant_p, overflow_p, jump_target);
+ ctx->global->cleanups = prev_cleanups;
+ unsigned int i;
+ tree cleanup;
+ /* Evaluate the cleanups. */
+ FOR_EACH_VEC_ELT_REVERSE (cleanups, i, cleanup)
+ eval_constant_expression (ctx, cleanup, false, non_constant_p,
+ overflow_p);
+ }
+ break;
+
+ case TRY_FINALLY_EXPR:
+ r = eval_constant_expression (ctx, TREE_OPERAND (t, 0), lval,
+ non_constant_p, overflow_p, jump_target);
+ if (!*non_constant_p)
+ /* Also evaluate the cleanup. */
+ eval_constant_expression (ctx, TREE_OPERAND (t, 1), true,
+ non_constant_p, overflow_p);
+ break;
+
case CONSTRUCTOR:
if (TREE_CONSTANT (t) && reduced_constant_expression_p (t))
{
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2022-08-29 15:34 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-08-29 15:34 [gcc/devel/rust/master] rust-constexpr.cc: add few more cases to eval_constant_expression() Thomas Schwinge
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).