[MemCpyOpt] Add new tests without constantexpr

Author: dtcxzyw

llvm/test/Transforms/MemCpyOpt/pr102994.ll

@@ -3,6 +3,7 @@
 
 @g1 = external global i8
 @g2 = external global [64 x i8]
+@g3 = global i8 0, align 1
 
 define void @func() {
 ; CHECK-LABEL: define void @func() {
@@ -16,3 +17,23 @@ entry:
   call void @llvm.memcpy.p0.p0.i64(ptr @g1, ptr getelementptr inbounds (i8, ptr @g2, i64 24), i64 1, i1 false)
   ret void
 }
+
+define void @func2(ptr %p) {
+; CHECK-LABEL: define void @func2(
+; CHECK-SAME: ptr [[P:%.*]]) {
+; CHECK-NEXT:  [[ENTRY:.*:]]
+; CHECK-NEXT:    [[GEP1:%.*]] = getelementptr i8, ptr [[P]], i64 32
+; CHECK-NEXT:    [[GEP2:%.*]] = getelementptr i8, ptr [[P]], i64 34
+; CHECK-NEXT:    [[GEP3:%.*]] = getelementptr i8, ptr [[P]], i64 32
+; CHECK-NEXT:    call void @llvm.memcpy.p0.p0.i64(ptr [[GEP1]], ptr [[GEP3]], i64 32, i1 false)
+; CHECK-NEXT:    call void @llvm.memcpy.p0.p0.i64(ptr @g3, ptr [[GEP2]], i64 1, i1 false)
+; CHECK-NEXT:    ret void
+;
+entry:
+  %gep1 = getelementptr i8, ptr %p, i64 32
+  %gep2 = getelementptr i8, ptr %p, i64 34
+  %gep3 = getelementptr i8, ptr %p, i64 32
+  call void @llvm.memcpy.p0.p0.i64(ptr %gep1, ptr %gep3, i64 32, i1 false)
+  call void @llvm.memcpy.p0.p0.i64(ptr @g3, ptr %gep2, i64 1, i1 false)
+  ret void
+}