Add support for Vector Multiply Sum Saturated on PowerPC

src/etc/platform-intrinsics/powerpc.json

@@ -184,6 +184,13 @@
             "llvm": "vmsumshm",
             "ret": "s32",
             "args": ["s16", "s16", "s32"]
+        },
+        {
+            "intrinsic": "msum{0.kind}hs",
+            "width": [128],
+            "llvm": "vmsum{0.kind}hs",
+            "ret": "i32",
+            "args": ["0N", "0N", "0"]
         }
     ]
 }

src/librustc_platform_intrinsics/powerpc.rs

@@ -362,6 +362,16 @@ pub fn find(name: &str) -> Option<Intrinsic> {
             output: &::I32x4,
             definition: Named("llvm.ppc.altivec.vmsumshm")
         },
+        "_vec_msumshs" => Intrinsic {
+            inputs: { static INPUTS: [&'static Type; 3] = [&::I16x8, &::I16x8, &::I32x4]; &INPUTS },
+            output: &::I32x4,
+            definition: Named("llvm.ppc.altivec.vmsumshs")
+        },
+        "_vec_msumuhs" => Intrinsic {
+            inputs: { static INPUTS: [&'static Type; 3] = [&::U16x8, &::U16x8, &::U32x4]; &INPUTS },
+            output: &::U32x4,
+            definition: Named("llvm.ppc.altivec.vmsumuhs")
+        },
         _ => return None,
     })
 }