Prevent div-by-0 when executing Zvbdot instructions with VLEN=0

Fixes #2076
11 months ago · 18bcac3d94
1 changed files with 1 additions and 1 deletions
--- a/riscv/v_ext_macros.h
+++ b/riscv/v_ext_macros.h
@ -2088,11 +2088,11 @@ VI_VX_ULOOP({ \
  require_noover(insn.rd(), 1, insn.rs2(), P.VU.vflmul)

 #define ZVBDOT_INIT(widen) \
+  require_vector(true); \
  unsigned vd_eew = P.VU.vsew * (widen); \
  unsigned vd_emul = std::max(1U, unsigned((8 * vd_eew) / P.VU.VLEN)); \
  unsigned vs2 = insn.rs2() & ~7; \
  unsigned ci = (insn.rs2() & 7) * 8; \
-  require_vector(true); \
  require(P.VU.vstart->read() == 0); \
  require(P.VU.vflmul == 1); \
  require(ci * vd_eew < P.VU.VLEN); \