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 #128973 applies to PowerPC targets as
well, though I've only tested 64-bit Linux targets.

Signed-off-by: Jens Reidel <[email protected]>

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 ===================================================================================