[PATCH 0/3] Fix RVV calling incorrect RFV/RVD check functions bug

[frank . chang]

From: Frank Chang <frank.chang@sifive.com>

For vector widening and narrowing floating-point instructions, we should
use require_scale_rvf() instead of require_rvf() to check whether the
correspond RVF/RVD is enabled if either source or destination
floating-point operand is double-width of SEW. Otherwise, illegal
instruction exception should be raised.

e.g. For SEW=16, if the source/destination floating-point operand is
double-width of SEW, RVF needs to be enabled. Otherwise, an illegal
instruction exception will be raised. Similarly, for SEW=32, RVD
needs to be enabled.

Frank Chang (3):
  target/riscv: rvv-1.0: Call the correct RVF/RVD check funtion for
    widening fp insns
  target/riscv: rvv-1.0: Call the correct RVF/RVD check funtion for
    widening fp/int type-convert insns
  target/riscv: rvv-1.0: Call the correct RVF/RVD check funtion for
    narrowing fp/int type-convert insns

 target/riscv/insn_trans/trans_rvv.c.inc | 78 ++++++++++++++++++-------
 1 file changed, 57 insertions(+), 21 deletions(-)

--
2.31.1