Fix ICE: Don't generate integer mask comparision for 128/256-bits vector when op_true...

Fix ICE: Don't generate integer mask comparision for 128/256-bits vector when op_true/op_false are NULL or constm1_rtx/const0_rtx [PR98537]

avx512vl-pr92686-vpcmp-{1,2,intelasm-1}.c are used to guard code
generation of integer mask comparison, but for vector comparison to
vector dest, integer mask comparison is disliked, so delete these
useless tests.

gcc/ChangeLog:

	PR target/98537
	* config/i386/i386-expand.c (ix86_expand_sse_cmp): Don't
	generate integer mask comparison for 128/256-bits vector when
	op_true/op_false is NULL_RTX or CONSTM1_RTX/CONST0_RTX. Also
	delete redundant !maskcmp condition.
	(ix86_expand_int_vec_cmp): Ditto but no redundant deletion
	here.
	(ix86_expand_sse_movcc): Delete definition of maskcmp, add the
	condition directly to if (maskcmp), add extra check for
	cmpmode, it should be MODE_INT.
	(ix86_expand_fp_vec_cmp): Pass NULL to ix86_expand_sse_cmp's
	parameters op_true/op_false.
	(ix86_use_mask_cmp_p): New.

gcc/testsuite/ChangeLog:

	PR target/98537
	* g++.target/i386/avx512bw-pr98537-1.C: New test.
	* g++.target/i386/avx512vl-pr98537-1.C: New test.
	* g++.target/i386/avx512vl-pr98537-2.C: New test.
	* gcc.target/i386/avx512vl-pr88547-1.c: Adjust testcase,
	integer mask comparison should not be generated.
	* gcc.target/i386/avx512vl-pr92686-vpcmp-1.c: Remove.
	* gcc.target/i386/avx512vl-pr92686-vpcmp-2.c: Ditto.
	* gcc.target/i386/avx512vl-pr92686-vpcmp-intelasm-1.c: Ditto.