This removes stale users of maybe_fold_reference where IL constraints
make it never do anything.
Bootstrapped and tested on x86_64-unknown-linux-gnu, pushed.
2021-05-11 Richard Biener <rguent...@suse.de>
* gimple-fold.c (gimple_fold_call): Do not call
maybe_fold_reference on call arguments or the static chain.
(fold_stmt_1): Do not call maybe_fold_reference on GIMPLE_ASM
inputs.
---
gcc/gimple-fold.c | 59 -----------------------------------------------
1 file changed, 59 deletions(-)
diff --git a/gcc/gimple-fold.c b/gcc/gimple-fold.c
index 74ec36e3a78..68717cf1542 100644
--- a/gcc/gimple-fold.c
+++ b/gcc/gimple-fold.c
@@ -5447,19 +5447,6 @@ gimple_fold_call (gimple_stmt_iterator *gsi, bool
inplace)
gcall *stmt = as_a <gcall *> (gsi_stmt (*gsi));
tree callee;
bool changed = false;
- unsigned i;
-
- /* Fold *& in call arguments. */
- for (i = 0; i < gimple_call_num_args (stmt); ++i)
- if (REFERENCE_CLASS_P (gimple_call_arg (stmt, i)))
- {
- tree tmp = maybe_fold_reference (gimple_call_arg (stmt, i));
- if (tmp)
- {
- gimple_call_set_arg (stmt, i, tmp);
- changed = true;
- }
- }
/* Check for virtual calls that became direct calls. */
callee = gimple_call_fn (stmt);
@@ -5562,15 +5549,6 @@ gimple_fold_call (gimple_stmt_iterator *gsi, bool
inplace)
gimple_call_set_chain (stmt, NULL);
changed = true;
}
- else
- {
- tree tmp = maybe_fold_reference (gimple_call_chain (stmt));
- if (tmp)
- {
- gimple_call_set_chain (stmt, tmp);
- changed = true;
- }
- }
}
if (inplace)
@@ -6285,43 +6263,6 @@ fold_stmt_1 (gimple_stmt_iterator *gsi, bool inplace,
tree (*valueize) (tree))
changed |= gimple_fold_call (gsi, inplace);
break;
- case GIMPLE_ASM:
- /* Fold *& in asm operands. */
- {
- gasm *asm_stmt = as_a <gasm *> (stmt);
- size_t noutputs;
- const char **oconstraints;
- const char *constraint;
- bool allows_mem, allows_reg;
-
- noutputs = gimple_asm_noutputs (asm_stmt);
- oconstraints = XALLOCAVEC (const char *, noutputs);
-
- for (i = 0; i < noutputs; ++i)
- {
- tree link = gimple_asm_output_op (asm_stmt, i);
- oconstraints[i]
- = TREE_STRING_POINTER (TREE_VALUE (TREE_PURPOSE (link)));
- }
- for (i = 0; i < gimple_asm_ninputs (asm_stmt); ++i)
- {
- tree link = gimple_asm_input_op (asm_stmt, i);
- tree op = TREE_VALUE (link);
- constraint
- = TREE_STRING_POINTER (TREE_VALUE (TREE_PURPOSE (link)));
- parse_input_constraint (&constraint, 0, 0, noutputs, 0,
- oconstraints, &allows_mem, &allows_reg);
- if (REFERENCE_CLASS_P (op)
- && (allows_reg || !allows_mem)
- && (op = maybe_fold_reference (op)) != NULL_TREE)
- {
- TREE_VALUE (link) = op;
- changed = true;
- }
- }
- }
- break;
-
case GIMPLE_DEBUG:
if (gimple_debug_bind_p (stmt))
{
--
2.26.2
