[SLP] add test for vectorization of constant expressions; NFC

Goes with D67362.

llvm-svn: 371879

Author: rotateright

llvm/test/Transforms/SLPVectorizer/X86/consecutive-access.ll

@@ -565,6 +565,19 @@ define void @PR33958(i32** nocapture %p) {
   ret void
 }
 
+define void @store_constant_expression(i64* %p) {
+; CHECK-LABEL: @store_constant_expression(
+; CHECK-NEXT:    [[ARRAYIDX1:%.*]] = getelementptr inbounds i64, i64* [[P:%.*]], i64 1
+; CHECK-NEXT:    [[TMP1:%.*]] = bitcast i64* [[P]] to <2 x i64>*
+; CHECK-NEXT:    store <2 x i64> <i64 ptrtoint (i32* @g1 to i64), i64 ptrtoint (i32* @g2 to i64)>, <2 x i64>* [[TMP1]], align 8
+; CHECK-NEXT:    ret void
+;
+  store i64 ptrtoint (i32* @g1 to i64), i64* %p, align 8
+  %arrayidx1 = getelementptr inbounds i64, i64* %p, i64 1
+  store i64 ptrtoint (i32* @g2 to i64), i64* %arrayidx1, align 8
+  ret void
+}
+
 attributes #0 = { nounwind ssp uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
 
 !llvm.ident = !{!0}