[PATCH] fix(TemplateTable): use float operations for fast_xaccess() and fstore()...

[PATCH] fix(TemplateTable): use float operations for fast_xaccess() and fstore(). This PR changes fstore and fast_xaccess operations to generate float (4 byte) instructions on S390x. This resolves out of bound read and writes on float that causes a segmentation fault with Compact Object Headers enabled.

From b9ea4636bea0f6264b2c602e4203e8e604d8da6e Mon Sep 17 00:00:00 2001
Bug: https://bugs.openjdk.org/browse/JDK-8387580
Origin: upstream, https://github.com/openjdk/jdk/commit/978dfecb6545166aee93a8e68c9c82535b0cb3e2

Gbp-Pq: Name jdk-8387580.diff