rs6000: Improve fusion assembler output

rs6000: Improve fusion assembler output

This improves the output for load and store fusion a little.  In most
cases it removes the comment output, because that makes the generated
assembler code hard to read, and equivalent info is available with -dp
anyway.  For the vector loads it puts the comment on the second insn,
where it doesn't interfere with other debug comments.

	* config/rs6000/rs6000-protos.h (emit_fusion_addis): Remove last two
	parameters from prototype.
	* config/rs6000/rs6000.c (emit_fusion_addis): Remove last two
	parameters.  Don't print a comment.
	(emit_fusion_gpr_load): Adjust.
	(emit_fusion_load_store): Adjust.
	* config/rs6000/rs6000.md (*fusion_p9_<mode>_constant): Adjust.
	* config/rs6000/vsx.md (two peepholes): Print the "vector load fusion"
	comment on the second line.

gcc/testsuite/
	* gcc.target/powerpc/fusion.c: Add -dp to options.  Adjust the expected
	output.
	* gcc.target/powerpc/fusion3.c: Ditto.
	* gcc.target/powerpc/fusion4.c: Ditto.

From-SVN: r255350