Add support for Vector Pack Saturated Unsigned on PowerPC

Author: lu-zero

src/etc/platform-intrinsics/powerpc.json

@@ -128,6 +128,13 @@
             "llvm": "vpk{0.kind}{1.data_type_short}{0.kind}s",
             "ret": "i(8-16)",
             "args": ["0W", "1"]
+        },
+        {
+            "intrinsic": "packsu{1.kind}{1.data_type_short}",
+            "width": [128],
+            "llvm": "vpk{1.kind}{1.data_type_short}{0.kind}s",
+            "ret": "u(8-16)",
+            "args": ["0Ws", "1"]
         }
     ]
 }

src/librustc_platform_intrinsics/powerpc.rs

@@ -302,6 +302,16 @@ pub fn find(name: &str) -> Option<Intrinsic> {
             output: &::U16x8,
             definition: Named("llvm.ppc.altivec.vpkuwus")
         },
+        "_vec_packsush" => Intrinsic {
+            inputs: { static INPUTS: [&'static Type; 2] = [&::I16x8, &::I16x8]; &INPUTS },
+            output: &::U8x16,
+            definition: Named("llvm.ppc.altivec.vpkshus")
+        },
+        "_vec_packsusw" => Intrinsic {
+            inputs: { static INPUTS: [&'static Type; 2] = [&::I32x4, &::I32x4]; &INPUTS },
+            output: &::U16x8,
+            definition: Named("llvm.ppc.altivec.vpkswus")
+        },
         _ => return None,
     })
 }