hg: jdk/sandbox: 8249603: C1: assert(has_error == false) failed: register allocation invalid

[chris.hegarty at oracle.com]

Changeset: 21ef0858cc7f
Author:    chagedorn
Date:      2020-08-12 08:45 +0200
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/21ef0858cc7f

8249603: C1: assert(has_error == false) failed: register allocation invalid
Summary: Added bailout in combine_spilled_intervals() to avoid an overlap between two intervals
Reviewed-by: kvn, thartmann

! src/hotspot/share/c1/c1_LinearScan.cpp
! src/hotspot/share/c1/c1_LinearScan.hpp
+ test/hotspot/jtreg/compiler/regalloc/TestC1OverlappingRegisterHint.java