test: ignore force-frame-pointers test on some targets

all of these currently force stronger frame pointers, and
currently the CLI does not override the target

Author: workingjubilee

src/tools/compiletest/src/header.rs

@@ -766,6 +766,8 @@ const KNOWN_DIRECTIVE_NAMES: &[&str] = &[
     "ignore-haiku",
     "ignore-horizon",
     "ignore-i686-pc-windows-msvc",
+    "ignore-i686-unknown-linux-musl",
+    "ignore-illumos",
     "ignore-ios",
     "ignore-linux",
     "ignore-lldb",

tests/codegen/force-frame-pointers.rs

@@ -3,6 +3,12 @@
 //@ [NonLeaf] compile-flags: -Cforce-frame-pointers=non-leaf
 //@ compile-flags: -Zunstable-options
 //@ compile-flags: -C no-prepopulate-passes -Copt-level=0
+//@ [NonLeaf] ignore-illumos
+//@ [NonLeaf] ignore-openbsd
+//@ [NonLeaf] ignore-i686-unknown-linux-musl
+//@ [NonLeaf] ignore-windows-gnu
+//@ [NonLeaf] ignore-thumb
+// result is platform-dependent based on platform's frame pointer settings
 
 #![crate_type = "lib"]