hg: jdk/submit14: 8236944: The legVecZ operand should be limited to zmm0-zmm15 registers

[sandhya.viswanathan at intel.com]

Changeset: 641736f3fe11
Author:    sviswanathan
Date:      2020-01-13 08:27 -0800
URL:       https://hg.openjdk.java.net/jdk/submit14/rev/641736f3fe11

8236944: The legVecZ operand should be limited to zmm0-zmm15 registers
Summary: Associate legVecZ operand with vectorz_reg_legacy register class
Reviewed-by: vlivanov, thartmann

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