GCSE: Export 'insert_insn_end_basic_block' as global function

Since VSETVL PASS in RISC-V port is using common part of 'insert_insn_end_basic_block (struct gcse_expr *expr, basic_block bb)'
and we will also this helper function in riscv.cc for the following patches.

So extract the common part codes of 'insert_insn_end_basic_block (struct gcse_expr *expr, basic_block bb)', the new function
of the common part is also call 'insert_insn_end_basic_block (rtx_insn *pat, basic_block bb)' but with different arguments.
And call 'insert_insn_end_basic_block (rtx_insn *pat, basic_block bb)' in 'insert_insn_end_basic_block (struct gcse_expr *expr, basic_block bb)'
and VSETVL PASS in RISC-V port.

Remove redundant codes of VSETVL PASS in RISC-V port.

gcc/ChangeLog:

	* config/riscv/riscv-vsetvl.cc (add_label_notes): Remove it.
	(insert_insn_end_basic_block): Ditto.
	(pass_vsetvl::commit_vsetvls): Adapt for new helper function.
	* gcse.cc (insert_insn_end_basic_block):  Export as global function.
	* gcse.h (insert_insn_end_basic_block): Ditto.

1 files changed, 1 insertions, 0 deletions

diff --git a/gcc/gcse.h b/gcc/gcse.h
index 5582b29..e68afdc 100644
--- a/gcc/gcse.h
+++ b/gcc/gcse.h
@@ -41,5 +41,6 @@ extern struct target_gcse *this_target_gcse;
 
 void gcse_cc_finalize (void);
 extern bool gcse_or_cprop_is_too_expensive (const char *);
+extern rtx_insn *insert_insn_end_basic_block (rtx_insn *, basic_block);
 
 #endif