[LazyCallGraph] Port test case from r240039 to LCG.

[sanjoy]

Summary

r240039 adds a test case to check that CallGraph does the right thing
with respect to non-leaf intrinsics like statepoint and patchpoint.
This ports the same test case to LazyCallGraph. LazyCallGraph already
does the right thing with respect to escaping function pointers so there
is no need to change any code.

[reames]

LGTM

[chandlerc]

This clearly looks good. =] FWIW, this kind of change seems obvious to me. Adding test cases like this should be fine with post-commit approval.

test/Analysis/LazyCallGraph/non-leaf-intrinsics.ll

+; RUN: opt -S -disable-output -passes=print-cg < %s 2>&1 | FileCheck %s
+
+declare void @llvm.experimental.patchpoint.void(i64, i32, i8*, i32, ...)
+declare i32 @llvm.experimental.gc.statepoint.p0f_isVoidf(i64, i32, void ()*, i32, i32, ...)
+
+define private void @f() {
+  ret void
+}
+
+define void @calls_statepoint(i8 addrspace(1)* %arg) gc "statepoint-example" {
+; CHECK: Call edges in function: calls_statepoint
+; CHECK-NEXT:  -> f
+entry:
+  %cast = bitcast i8 addrspace(1)* %arg to i64 addrspace(1)*
+  %safepoint_token = call i32 (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* @f, i32 0, i32 0, i32 0, i32 5, i32 0, i32 0, i32 0, i32 10, i32 0, i8 addrspace(1)* %arg, i64 addrspace(1)* %cast, i8 addrspace(1)* %arg, i8 addrspace(1)* %arg)
+  ret void
+}
+
+define void @calls_patchpoint() {
+; CHECK:  Call edges in function: calls_patchpoint
+; CHECK-NEXT:    -> f
+entry:
+  %c = bitcast void()* @f to i8*
+  tail call void (i64, i32, i8*, i32, ...) @llvm.experimental.patchpoint.void(i64 1, i32 15, i8* %c, i32 0, i16 65535, i16 -1, i32 65536, i32 2000000000, i32 2147483647, i32 -1, i32 4294967295, i32 4294967296, i64 2147483648, i64 4294967295, i64 4294967296, i64 -1)
+  ret void
+}