rust/tests/codegen/sanitizer-cfi-emit-type-checks.rs

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// Verifies that pointer type membership tests for indirect calls are emitted.
//
// needs-sanitizer-cfi
// compile-flags: -Clto -Cno-prepopulate-passes -Ctarget-feature=-crt-static -Zsanitizer=cfi
#![crate_type="lib"]
pub fn foo(f: fn(i32) -> i32, arg: i32) -> i32 {
// CHECK-LABEL: define{{.*}}foo{{.*}}!type !{{[0-9]+}}
// CHECK: start:
// CHECK: [[TT:%.+]] = call i1 @llvm.type.test({{i8\*|ptr}} {{%f|%0}}, metadata !"{{[[:print:]]+}}")
// CHECK-NEXT: br i1 [[TT]], label %type_test.pass, label %type_test.fail
// CHECK: type_test.pass:
// CHECK-NEXT: {{%.+}} = call i32 %f(i32 %arg)
// CHECK-NEXT: br label %bb1
// CHECK: type_test.fail:
// CHECK-NEXT: call void @llvm.trap()
// CHECK-NEXT: unreachable
f(arg)
}