Merge pull request #136 from bulasevich/GR-63484

[Backport] [Oracle GraalVM] [GR-63484] Backport to 23.1: AMD64ArrayIndexOfOp: Fix short jump across unknown alignment.

Author: zakkak

compiler/src/jdk.internal.vm.compiler/src/org/graalvm/compiler/lir/amd64/AMD64ArrayIndexOfOp.java

@@ -433,8 +433,12 @@ public void emitCode(CompilationResultBuilder crb, AMD64MacroAssembler asm) {
         asm.addq(index, bulkSize);
 
         boolean bulkLoopShortJmp = !((variant == ArrayIndexOfVariant.MatchRange && nValues == 4 || variant == ArrayIndexOfVariant.Table) && stride.value > 1);
-        // check if there are enough array slots remaining for the bulk loop
-        asm.cmpqAndJcc(index, arrayLength, ConditionFlag.Greater, skipBulkVectorLoop, bulkLoopShortJmp);
+        /*
+         * Check if there are enough array slots remaining for the bulk loop. Note: The alignment
+         * following the cmpAndJcc can lead to a jump distance > 127. This prevents safely using a
+         * short jump.
+         */
+        asm.cmpqAndJcc(index, arrayLength, ConditionFlag.Greater, skipBulkVectorLoop, false);
 
         asm.align(preferredLoopAlignment(crb));
         asm.bind(bulkVectorLoop);