Rollup merge of #157249 - vadorovsky:vad/llvm-codegen-bpf-alu32, r=nikic

tests: codegen-llvm: Update bpf-alu32 with the new LLVM attributes

The LLVM backend now emits `noundef zeroext` on `i8` return values and `noundef` on `i8` parameters. Update the FileCheck pattern to match.

r? @nagisa

Author: JonathanBrouwer

tests/codegen-llvm/bpf-alu32.rs

@@ -1,11 +1,18 @@
-//@ only-bpf
+//@ add-minicore
+//@ compile-flags: --target=bpfel-unknown-none -C opt-level=0
+//@ needs-llvm-components: bpf
 #![crate_type = "lib"]
-#![feature(bpf_target_feature)]
+#![feature(bpf_target_feature, no_core)]
+#![no_core]
 #![no_std]
 
+extern crate minicore;
+use minicore::*;
+
 #[no_mangle]
 #[target_feature(enable = "alu32")]
-// CHECK: define i8 @foo(i8 returned %arg) unnamed_addr #0
+// CHECK: define {{.*}}i8 @foo(i8 {{.*}}%arg) unnamed_addr #0
+// CHECK: attributes #0 = { {{.*}}"target-features"="{{[^"]*}}+alu32{{.*}} }
 pub unsafe fn foo(arg: u8) -> u8 {
     arg
 }