[SPARC] Fix PR middle-end/64242

[Eric Botcazou]

SPARC defines a nonlocal_goto pattern to which the same adjustment needs to be 
applied as in the middle-end.

Tested on SPARC/Solaris, applied on mainline and 9 branch.


2019-07-01  Eric Botcazou  <ebotcazou@adacore.com>

	PR middle-end/64242
	* config/sparc/sparc.md (nonlocal_goto): Restore frame pointer last.
	Add frame clobber and schedule blockage.

-- 
Eric Botcazou
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