aarch64: Enforce inlining restrictions for SME

A function that has local ZA state cannot be inlined into its caller,
since we only support managing ZA switches at function scope.

A function whose body directly clobbers ZA state cannot be inlined into
a function with ZA state.

A function whose body requires a particular PSTATE.SM setting can only
be inlined into a function body that guarantees that PSTATE.SM setting.
The callee's function type doesn't matter here: one locally-streaming
function can be inlined into another.

gcc/
	* config/aarch64/aarch64.cc: Include symbol-summary.h, ipa-prop.h,
	and ipa-fnsummary.h
	(aarch64_function_attribute_inlinable_p): New function.
	(AARCH64_IPA_SM_FIXED, AARCH64_IPA_CLOBBERS_ZA): New constants.
	(aarch64_need_ipa_fn_target_info): New function.
	(aarch64_update_ipa_fn_target_info): Likewise.
	(aarch64_can_inline_p): Restrict the previous ISA flag checks
	to non-modal features.  Prevent callees that require a particular
	PSTATE.SM state from being inlined into callers that can't guarantee
	that state.  Also prevent callees that have ZA state from being
	inlined into callers that don't.  Finally, prevent callees that
	clobber ZA from being inlined into callers that have ZA state.
	(TARGET_FUNCTION_ATTRIBUTE_INLINABLE_P): Define.
	(TARGET_NEED_IPA_FN_TARGET_INFO): Likewise.
	(TARGET_UPDATE_IPA_FN_TARGET_INFO): Likewise.

gcc/testsuite/
	* gcc.target/aarch64/sme/inlining_1.c: New test.
	* gcc.target/aarch64/sme/inlining_2.c: Likewise.
	* gcc.target/aarch64/sme/inlining_3.c: Likewise.
	* gcc.target/aarch64/sme/inlining_4.c: Likewise.
	* gcc.target/aarch64/sme/inlining_5.c: Likewise.
	* gcc.target/aarch64/sme/inlining_6.c: Likewise.
	* gcc.target/aarch64/sme/inlining_7.c: Likewise.
	* gcc.target/aarch64/sme/inlining_8.c: Likewise.

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