# HG changeset patch
# User Jin
# Date 1462621083 14400
# Node ID 87ed97bc0867daa6bb462acfdd747136659884d4
# Parent  ef5b28e8d433b0b76f2adf9243ad3152fa385382
[Interpreter] ProfileInterpreter: fix unaligned lwu

When running compress in debug mode,

/mnt/j2sdk-image/bin/java \
  -Xmx68M -Xms68M \
  -XX:CompileCommand="compileonly,spec/benchmarks/compress/Decompressor\$SuffixTable.of1" \
  -XX:+PrintCompilation \
  -XX:-CICompileNatives \
  -XX:+ProfileInterpreter \
  -XX:-UseTLAB \
  -XX:+UseLoopCounter \
  -XX:+UseOnStackReplacement \
  -XX:+UseSerialGC \
  -jar SPECjvm2008.jar -ikv -coe -ict -bt 1 \
  compress

Though no method is compiled, the unaligned counter reaches 779990 /s.

This error doesn't exist in product version.

Effect:
- compress + debug + +ProfileInterpreter: 0 unaligned access

diff -r ef5b28e8d433 -r 87ed97bc0867 src/cpu/mips/vm/interp_masm_mips_64.cpp
--- a/src/cpu/mips/vm/interp_masm_mips_64.cpp	Thu May 05 17:04:35 2016 -0400
+++ b/src/cpu/mips/vm/interp_masm_mips_64.cpp	Sat May 07 07:38:03 2016 -0400
@@ -1377,7 +1377,7 @@
 
   // If the mdp is valid, it will point to a DataLayout header which is
   // consistent with the bcp.  The converse is highly probable also.
-  lwu(tmp, mdp, in_bytes(DataLayout::bci_offset()));
+  lhu(tmp, mdp, in_bytes(DataLayout::bci_offset()));
   ld(AT, method, in_bytes(Method::const_offset()));
   daddu(tmp, tmp, AT);
   daddiu(tmp, tmp, in_bytes(ConstMethod::codes_offset()));