IPA ICF: compare_operand is split to multiple functions.
* ipa-icf-gimple.c (func_checker::compare_ssa_name): Enhance SSA
name comparison.
(func_checker::compare_memory_operand): New function.
(func_checker::compare_operand): Split case to newly
added functions.
(func_checker::compare_cst_or_decl): New function.
(func_checker::compare_gimple_call): Identify
memory operands.
(func_checker::compare_gimple_assign): Likewise.
* ipa-icf-gimple.h: New function.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@219379 138bc75d-0d04-0410-961f-82ee72b054a4