debug: Fix another vector DECL_MODE ICE [PR98100]

debug: Fix another vector DECL_MODE ICE [PR98100]

The PR88587 fix changes DECL_MODE of vars with vector type during inlining/cloning
when the vars are copied, so that their DECL_MODE matches their TYPE_MODE in
the new function.  Unfortunately, the following testcase still ICEs, the var
isn't really used in the new function and so it isn't copied, but becomes
just a nonlocalized var.  So we can't adjust its DECL_MODE because it
appears in multiple functions and needs different modes in between them.
The following patch changes the DEBUG_INSN creation to use TYPE_MODE instead
of DECL_MODE for vars with vector types.

2020-12-04  Jakub Jelinek  <jakub@redhat.com>

	PR target/98100
	* cfgexpand.c (expand_gimple_basic_block): For vars with
	vector type, use TYPE_MODE rather than DECL_MODE.

	* gcc.target/i386/pr98100.c: New test.