target/arm/helper: zcr: Add build bug next to value range assumption

The current implementation of ZCR_ELx matches the architecture, only
implementing the lower four bits, with the rest RAZ/WI. This puts
a strict limit on ARM_MAX_VQ of 16. Make sure we don't let ARM_MAX_VQ
grow without a corresponding update here.

Backports commit 7b351d98709d3f77d6bb18562e1bf228862b0d57 from qemu
This commit is contained in:
Andrew Jones 2019-11-18 20:14:32 -05:00 committed by Lioncash
parent 3d3d56056b
commit bb8b3bc42b
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@ -5112,6 +5112,7 @@ static void zcr_write(CPUARMState *env, const ARMCPRegInfo *ri,
int new_len;
/* Bits other than [3:0] are RAZ/WI. */
QEMU_BUILD_BUG_ON(ARM_MAX_VQ > 16);
raw_write(env, ri, value & 0xf);
/*