add test case

Author: diggerlin

llvm/test/CodeGen/PowerPC/pr118695.ll

@@ -0,0 +1,17 @@
+; RUN: llc < %s -verify-machineinstrs -mtriple=powerpc-aix- -mcpu=pwr10 | FileCheck %s
+
+; CHECK:      # %bb.0:                                # %bb
+; CHECK-NEXT:   lwz 3, L..C0(2)                         # @dvar
+; CHECK-NEXT:   plxv 0, -152758(3), 0
+; CHECK-NEXT:   stxv 0, 0(0)
+; CHECK-NEXT:   blr
+
+%0 = type <{ double }>
+@dvar = external global [2352637 x %0]
+
+define void @Test() {
+bb:
+	%i9 = load <2 x double>, ptr getelementptr inbounds (i8, ptr @dvar, i64 -152758), align 8
+	store <2 x double> %i9, ptr null, align 8
+	ret void
+}