shark: Assertion in include/llvm/CodeGen/MachineOperand.h:251

[Robert Schuster]

Hi,

Gary Benson schrieb:
> Robert Schuster wrote:
>> The interesting point is, that this problem always happens when you
>> run 'java' - whether you are pointing to a Java program or just want
>> to see -version.
> 
> The java program always executes a certain amount of Java code, even
> if you run it with no arguments.  Try java -XX:+PrintCompilation and
> you'll see what I mean.
I see:

./java -XX:+PrintCompilation
  1       java.lang.String::equals (88 bytes)
java:
/home/rob/oe/beagle/tmp/work/armv7a-angstrom-linux-gnueabi/llvm-2.4-r0/llvm-2.4/include/llvm/CodeGen/MachineOperand.h:251:
int64_t llvm::MachineOperand::getImm() const: Assertion `isImm() &&
"Wrong MachineOperand accessor"' failed.
Aborted

If I run
java -XX:+PrintCompilation HelloWorld
  1       java.lang.String::hashCode (60 bytes)
Hello World!
[crash message like above]

Since there is only one method being compiled before the crash happens I
assume that the JIT is not working at all. :(

I furthermore do not experience the crash when running with -Xint ..

Are there more options like -XX:+PrintCompilation (can't find it
documented)? Is it possible to tell hotspot that only a specific method
should be JIT compiled?


Regards
Robert

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