inlining check: use starts_with() instead of contains() while checking for subroutine call instruction

Author: hkratz

crates/stdarch-test/src/lib.rs

@@ -94,17 +94,17 @@ pub fn assert(shim_addr: usize, fnname: &str, expected: &str) {
     // inlining failed: all intrinsics are `#[inline(always)]`, so calling one
     // intrinsic from another should not generate subroutine call instructions.
     let inlining_failed = if cfg!(target_arch = "x86_64") || cfg!(target_arch = "wasm32") {
-        instrs.iter().any(|s| s.contains("call "))
+        instrs.iter().any(|s| s.starts_with("call "))
     } else if cfg!(target_arch = "x86") {
         instrs.windows(2).any(|s| {
             // On 32-bit x86 position independent code will call itself and be
             // immediately followed by a `pop` to learn about the current address.
             // Let's not take that into account when considering whether a function
             // failed inlining something.
-            s[0].contains("call ") && s[1].contains("pop") // FIXME: original logic but does not match comment
+            s[0].starts_with("call ") && s[1].starts_with("pop") // FIXME: original logic but does not match comment
         })
     } else if cfg!(target_arch = "aarch64") {
-        instrs.iter().any(|s| s.contains("bl "))
+        instrs.iter().any(|s| s.starts_with("bl "))
     } else {
         // FIXME: Add detection for other archs
         false