Move dw_op_minus test to DebugInfo/X86.

The test requires X86 target support, and checks the actual debug
info contents, including register numbers which would be different on
other platforms.

llvm-svn: 248938
diff --git a/llvm/test/DebugInfo/Generic/dw_op_minus.ll b/llvm/test/DebugInfo/X86/dw_op_minus.ll
similarity index 100%
rename from llvm/test/DebugInfo/Generic/dw_op_minus.ll
rename to llvm/test/DebugInfo/X86/dw_op_minus.ll