@@ -1536,23 +1536,6 @@ initialize_root_vars (struct loop *loop, chain_p chain, bitmap tmp_vars)
}
}
-/* Create the variables and initialization statement for root of chain
- CHAIN. Uids of the newly created temporary variables are marked
- in TMP_VARS. */
-
-static void
-initialize_root (struct loop *loop, chain_p chain, bitmap tmp_vars)
-{
- dref root = get_chain_root (chain);
- bool in_lhs = (chain->type == CT_STORE_LOAD
- || chain->type == CT_COMBINATION);
-
- initialize_root_vars (loop, chain, tmp_vars);
- replace_ref_with (root->stmt,
- chain->vars[chain->length],
- true, in_lhs);
-}
-
/* Initializes a variable for load motion for ROOT and prepares phi nodes and
initialization on entry to LOOP if necessary. The ssa name for the variable
is stored in VARS. If WRITTEN is true, also a phi node to copy its value
@@ -1749,6 +1732,7 @@ execute_pred_commoning_chain (struct loop *loop, chain_p chain,
unsigned i;
dref a;
tree var;
+ bool in_lhs;
if (chain->combined)
{
@@ -1758,10 +1742,14 @@ execute_pred_commoning_chain (struct loop *loop, chain_p chain,
}
else
{
- /* For non-combined chains, set up the variables that hold its value,
- and replace the uses of the original references by these
- variables. */
- initialize_root (loop, chain, tmp_vars);
+ /* For non-combined chains, set up the variables that hold its value. */
+ initialize_root_vars (loop, chain, tmp_vars);
+ a = get_chain_root (chain);
+ in_lhs = (chain->type == CT_STORE_LOAD
+ || chain->type == CT_COMBINATION);
+ replace_ref_with (a->stmt, chain->vars[chain->length], true, in_lhs);
+
+ /* Replace the uses of the original references by these variables. */
for (i = 1; chain->refs.iterate (i, &a); i++)
{
var = chain->vars[chain->length - a->distance];
Hi, This simple patch removes interface initialize_root. It's simple enough and called only once. Bootstrap(O2/O3) in patch series on x86_64 and AArch64. Is it OK? Thanks, bin 2017-06-21 Bin Cheng <bin.cheng@arm.com> * tree-predcom.c (initialize_root): Delete. (execute_pred_commoning_chain): Initialize root vars and replace reference of non-combined chain directly, rather than call above function. From 5670159613b9582437d3713aa69578e1a6b2cf0c Mon Sep 17 00:00:00 2001 From: Bin Cheng <binche01@e108451-lin.cambridge.arm.com> Date: Tue, 20 Jun 2017 16:31:43 +0100 Subject: [PATCH 4/6] remove-initialize_root-20170620.txt --- gcc/tree-predcom.c | 30 +++++++++--------------------- 1 file changed, 9 insertions(+), 21 deletions(-)