arm: [MVE] Fix predicates for vec_cmp, vec_vcmpu and vcond_mask (PR 115439)

When compiling c-c++-common/vector-compare-3.c with
-march=armv8.1-m.main+mve+fp.dp -mfloat-abi=hard -mfpu=auto
(which enables MVE), we fail to match vcond_mask because operand 3 has
s_register_operand as predicate for a MVE_VPRED mode, but we try to
match:
(insn 26 25 27 2 (set (reg:V4SI 137)
         (unspec:V4SI [
                 (reg:V4SI 144)
                 (reg:V4SI 145)
                 (subreg:V4BI (reg:HI 143) 0)
             ] VPSELQ_S)) "/src/gcc/testsuite/c-c++-common/vector-compare-3.c":23:6 -1
      (nil))

The fix is to use the right predicate: vpr_register_operand.

The patch also fixes vec_cmp and vec_cmpu in the same way.

When testing with
-mthumb/-march=armv8.1-m.main+mve.fp+fp.dp/-mtune=cortex-m55/-mfloat-abi=hard/-mfpu=auto
it fixes the ICES in c-c++-common/vector-compare-3.c,
g++.dg/opt/pr79734.C, g++.dg/tree-ssa/pr111150.C and
gcc.dg/tree-ssa/pr111150.c

	gcc/ChangeLog

	PR target/115439
	* config/arm/mve.md (vec_vcmp, vec_vcmpu, vcond_mask): Use
	vpr_register_operand predicate for MVE_VPRED operands.

0 files changed, 0 insertions, 0 deletions