hg: valhalla/valhalla: 8223110: [lworld] Handle GC that happens when C1 allocates buffered value objects

[ioi.lam at oracle.com]

Changeset: c7ecf40f8a60
Author:    iklam
Date:      2019-05-02 16:10 -0700
URL:       http://hg.openjdk.java.net/valhalla/valhalla/rev/c7ecf40f8a60

8223110: [lworld] Handle GC that happens when C1 allocates buffered value objects
Reviewed-by: thartmann

! src/hotspot/cpu/x86/frame_x86.cpp
! src/hotspot/share/code/compiledMethod.cpp
! test/hotspot/jtreg/compiler/valhalla/valuetypes/TestCallingConventionC1.java