Currently gimple_folder::convert_and_fold calls create_tmp_var; that means
while in ssa form,
the pass which calls fold_stmt will always have to update the ssa (via
TODO_update_ssa or otherwise).
This seems not very useful since we know that this will always be a ssa name,
using create_tmp_reg_or_ssa_name
instead is better and don't need to depend on the ssa updater. Plus this should
have a small compile time performance
and memory usage improvement too since this uses an anonymous ssa name rather
than creating a full decl for this.
Built and tested on aarch64-linux-gnu.
gcc/ChangeLog:
* config/aarch64/aarch64-sve-builtins.cc
(gimple_folder::convert_and_fold): Use create_tmp_reg_or_ssa_name
instead of create_tmp_var for the temporary.
Signed-off-by: Andrew Pinski <quic_apin...@quicinc.com>
---
gcc/config/aarch64/aarch64-sve-builtins.cc | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/gcc/config/aarch64/aarch64-sve-builtins.cc
b/gcc/config/aarch64/aarch64-sve-builtins.cc
index 36519262efd..329237b086d 100644
--- a/gcc/config/aarch64/aarch64-sve-builtins.cc
+++ b/gcc/config/aarch64/aarch64-sve-builtins.cc
@@ -3675,7 +3675,7 @@ gimple_folder::convert_and_fold (tree type,
tree old_ty = TREE_TYPE (lhs);
gimple_seq stmts = NULL;
bool convert_lhs_p = !useless_type_conversion_p (type, old_ty);
- tree lhs_conv = convert_lhs_p ? create_tmp_var (type) : lhs;
+ tree lhs_conv = convert_lhs_p ? create_tmp_reg_or_ssa_name (type) : lhs;
unsigned int num_args = gimple_call_num_args (call);
auto_vec<tree, 16> args_conv;
args_conv.safe_grow (num_args);
--
2.43.0
