+def CC_X86_32_VectorCall : CallingConv<[
+ // The first 6 floating point and vector types of 128 bits or less use
+ // XMM0-XMM5.
+ CCIfType<[f32, f64, v16i8, v8i16, v4i32, v2i64, v4f32, v2f64],
+ CCAssignToReg<[XMM0, XMM1, XMM2, XMM3, XMM4, XMM5]>>,
+
+ // 256-bit vectors use YMM registers.
+ CCIfType<[v32i8, v16i16, v8i32, v4i64, v8f32, v4f64],
+ CCAssignToReg<[YMM0, YMM1, YMM2, YMM3, YMM4, YMM5]>>,
+
+ // 512-bit vectors use ZMM registers.
+ CCIfType<[v64i8, v32i16, v16i32, v8i64, v16f32, v8f64],
+ CCAssignToReg<[ZMM0, ZMM1, ZMM2, ZMM3, ZMM4, ZMM5]>>,
+
+ // Otherwise, pass it indirectly.
+ CCIfType<[v16i8, v8i16, v4i32, v2i64, v4f32, v2f64,
+ v32i8, v16i16, v8i32, v4i64, v8f32, v4f64,
+ v64i8, v32i16, v16i32, v8i64, v16f32, v8f64],
+ CCCustom<"CC_X86_32_VectorCallIndirect">>,
+
+ // Delegate to fastcall to handle integer types.
+ CCDelegateTo<CC_X86_32_FastCall>
+]>;
+