Reenable all cases of simd-wide-sum

Author: workingjubilee

tests/codegen/simd-wide-sum.rs

@@ -52,9 +52,8 @@ pub fn wider_reduce_iter(x: Simd<u8, N>) -> u16 {
 #[no_mangle]
 // CHECK-LABEL: @wider_reduce_into_iter
 pub fn wider_reduce_into_iter(x: Simd<u8, N>) -> u16 {
-    // FIXME MIR inlining messes up LLVM optimizations.
-    // WOULD-CHECK: zext <8 x i8>
-    // WOULD-CHECK-SAME: to <8 x i16>
-    // WOULD-CHECK: call i16 @llvm.vector.reduce.add.v8i16(<8 x i16>
+    // CHECK: zext <8 x i8>
+    // CHECK-SAME: to <8 x i16>
+    // CHECK: call i16 @llvm.vector.reduce.add.v8i16(<8 x i16>
     x.to_array().into_iter().map(u16::from).sum()
 }