Minimal builds on x86 fail because some new functions have been defined inside a COMPILER2_OR_JVMCI block. I've moved the code so that the three `clear_mem` functions are kept together and alone in their COMPILER2_OR_JVMCI block.
------------- Commit messages: - Fix minimal x86 Changes: https://git.openjdk.org/valhalla/pull/1780/files Webrev: https://webrevs.openjdk.org/?repo=valhalla&pr=1780&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8373346 Stats: 142 lines in 1 file changed: 71 ins; 71 del; 0 mod Patch: https://git.openjdk.org/valhalla/pull/1780.diff Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1780/head:pull/1780 PR: https://git.openjdk.org/valhalla/pull/1780
