sched-deps: do not schedule pseudos across calls [PR108117]

sched-deps: do not schedule pseudos across calls [PR108117]

Scheduling across calls in the pre-RA scheduler is problematic: we do
not take liveness info into account, and are thus prone to extending
lifetime of a pseudo over the loop, requiring a callee-saved hardreg
or causing a spill.

If current function called a setjmp, lifting an assignment over a call
may be incorrect if a longjmp would happen before the assignment.

Thanks to Jose Marchesi for testing on AArch64.

gcc/ChangeLog:

	PR rtl-optimization/108117
	PR rtl-optimization/108132
	* sched-deps.cc (deps_analyze_insn): Do not schedule across
	calls before reload.

gcc/testsuite/ChangeLog:

	PR rtl-optimization/108117
	PR rtl-optimization/108132
	* gcc.dg/pr108117.c: New test.