C2: assert(VerifyOops || MachNode::size(ra_) <= (3+1)*4) failed: bad fixed size

While trying to exercise the loadI2L_immI rule on sparc, I hit the following fastdebug crash:

# To suppress the following error report, specify this argument
# after -XX: or in .hotspotrc: SuppressErrorAt=/ad_sparc.cpp:7967
#
# A fatal error has been detected by the Java Runtime Environment:
#
# Internal Error (../generated/adfiles/ad_sparc.cpp:7967), pid=7960, tid=31
# assert(VerifyOops || MachNode::size(ra_) <= (3+1)*4) failed: bad fixed size
#
# JRE version: Java(TM) SE Runtime Environment (8.0-b123) (build 1.8.0-ea-fastdebug-b123)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (25.0-b65-fastdebug mixed mode solaris-sparc compressed oops)

With a product build, the crash is less informative:

#
# A fatal error has been detected by the Java Runtime Environment:
#
# Internal Error (output.cpp:1559), pid=7968, tid=31
# guarantee((int)(blk_starts[i+1] - blk_starts[i]) >= (current_offset - blk_offset)) failed: shouldn't increase block size
#
# JRE version: Java(TM) SE Runtime Environment (8.0-b123) (build 1.8.0-ea-b123)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (25.0-b65 mixed mode solaris-sparc compressed oops)

% cat a1.java
public class a1 {
    static int x[] = new int[1];
    static long foo() {
        return x[0] & 0xfff0ffff;
    }

    public static void main(String[] args) {
        x[0] = -1;
        long l = 0;
        for (int i = 0; i < 100000; ++i) {
            l = foo();
        }
        System.out.println(l);
    }
}

To reproduce:
% java -server -XX:-TieredCompilation a1