re PR debug/43293 (Invalid unwind info for i?86 -fpic)
PR debug/43293 * config/i386/t-i386 (i386.o): Depend on debug.h and dwarf2out.h. * config/i386/i386.c: Include debug.h and dwarf2out.h. (ix86_file_end): If dwarf2out_do_cfi_asm (), emit .cfi_startproc and .cfi_endproc around the pic thunks. (output_set_got): For TARGET_DEEP_BRANCH_PREDICTION pic, ensure all queued unwind info register saves are saved before the call. For !TARGET_DEEP_BRANCH_PREDICTION pic, ensure the call is considered as sp-=4 for unwind info and the pop as sp+=4 which also clobbers dest, but doesn't actually restore it. From-SVN: r157325
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