tests: debuginfo: Disable broken tests on powerpc

f16 support for PowerPC has issues in LLVM, therefore we need to disable
the tests that make use of f16.

It also appears that unused by-value non-immedate issue with gdb applies
to PowerPC targets as well, though I've only tested 64-bit Linux targets.

Signed-off-by: Jens Reidel <adrian@travitia.xyz>

Author: Gelbpunkt

src/tools/compiletest/src/directives.rs

@@ -854,6 +854,7 @@ const KNOWN_DIRECTIVE_NAMES: &[&str] = &[
     "ignore-openbsd",
     "ignore-pass",
     "ignore-powerpc",
+    "ignore-powerpc64",
     "ignore-remote",
     "ignore-riscv64",
     "ignore-rustc-debug-assertions",

tests/debuginfo/basic-types-globals-metadata.rs

@@ -1,5 +1,11 @@
 //@ compile-flags:-g
 
+// Targets with broken f16 cannot link due to missing __gnu_f2h_ieee
+// See https://github.com/llvm/llvm-project/issues/97981
+// and https://github.com/rust-lang/compiler-builtins/issues/655
+//@ ignore-powerpc
+//@ ignore-powerpc64
+
 // gdb-command:run
 // gdb-command:whatis basic_types_globals_metadata::B
 // gdb-check:type = bool

tests/debuginfo/basic-types-globals.rs

@@ -2,6 +2,12 @@
 
 //@ compile-flags:-g
 
+// Targets with broken f16 cannot link due to missing __gnu_f2h_ieee
+// See https://github.com/llvm/llvm-project/issues/97981
+// and https://github.com/rust-lang/compiler-builtins/issues/655
+//@ ignore-powerpc
+//@ ignore-powerpc64
+
 //@ [lto] compile-flags:-C lto
 //@ [lto] no-prefer-dynamic
 

tests/debuginfo/by-value-non-immediate-argument.rs

@@ -3,6 +3,7 @@
 //@ compile-flags:-g
 //@ ignore-windows-gnu: #128973
 //@ ignore-aarch64-unknown-linux-gnu (gdb tries to read from 0x0; FIXME: #128973)
+//@ ignore-powerpc64: #128973 on both -gnu and -musl
 
 // === GDB TESTS ===================================================================================