Imported Upstream version 5.18.0.179

Former-commit-id: 67aa10e65b237e1c4537630979ee99ebe1374215

external/llvm/test/Transforms/CodeGenPrepare/invariant.group.ll

@@ -0,0 +1,24 @@
+; RUN: opt -codegenprepare -S < %s | FileCheck %s
+
+@tmp = global i8 0
+
+; CHECK-LABEL: define void @foo() {
+define void @foo() {
+enter:
+  ; CHECK-NOT: !invariant.group
+  ; CHECK-NOT: @llvm.invariant.group.barrier.p0i8(
+  ; CHECK: %val = load i8, i8* @tmp, !tbaa
+  %val = load i8, i8* @tmp, !invariant.group !0, !tbaa !{!1, !1, i64 0}
+  %ptr = call i8* @llvm.invariant.group.barrier.p0i8(i8* @tmp)
+  
+  ; CHECK: store i8 42, i8* @tmp
+  store i8 42, i8* %ptr, !invariant.group !0
+  
+  ret void
+}
+; CHECK-LABEL: }
+
+declare i8* @llvm.invariant.group.barrier.p0i8(i8*)
+
+!0 = !{!"something"}
+!1 = !{!"x", !0}