Add support for powerpc64le-unknown-freebsd.

Author: pkubaj

compiler/rustc_target/src/spec/mod.rs

@@ -686,6 +686,7 @@ supported_targets! {
     ("armv7-unknown-freebsd", armv7_unknown_freebsd),
     ("i686-unknown-freebsd", i686_unknown_freebsd),
     ("powerpc64-unknown-freebsd", powerpc64_unknown_freebsd),
+    ("powerpc64le-unknown-freebsd", powerpc64le_unknown_freebsd),
     ("x86_64-unknown-freebsd", x86_64_unknown_freebsd),
 
     ("x86_64-unknown-dragonfly", x86_64_unknown_dragonfly),

compiler/rustc_target/src/spec/powerpc64le_unknown_freebsd.rs

@@ -0,0 +1,16 @@
+use crate::spec::{LinkerFlavor, Target, TargetOptions};
+
+pub fn target() -> Target {
+    let mut base = super::freebsd_base::opts();
+    base.cpu = "ppc64le".to_string();
+    base.pre_link_args.get_mut(&LinkerFlavor::Gcc).unwrap().push("-m64".to_string());
+    base.max_atomic_width = Some(64);
+
+    Target {
+        llvm_target: "powerpc64le-unknown-freebsd".to_string(),
+        pointer_width: 64,
+        data_layout: "e-m:e-i64:64-n32:64".to_string(),
+        arch: "powerpc64".to_string(),
+        options: TargetOptions { mcount: "_mcount".to_string(), ..base },
+    }
+}