From 6ff72a1cfd9298b1e8de5fd9a8182a87fbc318fe Mon Sep 17 00:00:00 2001
From: Richard Diamond <wichard@vitalitystudios.com>
Date: Wed, 18 Jul 2018 22:01:19 -0500
Subject: [PATCH] AMDGPU call abi info.

---
 src/librustc_target/abi/call/amdgpu.rs | 42 ++++++++++++++++++++++++++
 src/librustc_target/abi/call/mod.rs    |  2 ++
 2 files changed, 44 insertions(+)
 create mode 100644 src/librustc_target/abi/call/amdgpu.rs

diff --git a/src/librustc_target/abi/call/amdgpu.rs b/src/librustc_target/abi/call/amdgpu.rs
new file mode 100644
index 000000000000..62462f04d8f5
--- /dev/null
+++ b/src/librustc_target/abi/call/amdgpu.rs
@@ -0,0 +1,42 @@
+// Copyright 2018 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+use abi::call::{ArgType, FnType, };
+use abi::{HasDataLayout, LayoutOf, TyLayout, TyLayoutMethods};
+
+fn classify_ret_ty<'a, Ty, C>(_tuncx: C, ret: &mut ArgType<'a, Ty>)
+  where Ty: TyLayoutMethods<'a, C> + Copy,
+        C: LayoutOf<Ty = Ty, TyLayout = TyLayout<'a, Ty>> + HasDataLayout
+{
+  ret.extend_integer_width_to(32);
+}
+
+fn classify_arg_ty<'a, Ty, C>(_cx: C, arg: &mut ArgType<'a, Ty>)
+  where Ty: TyLayoutMethods<'a, C> + Copy,
+        C: LayoutOf<Ty = Ty, TyLayout = TyLayout<'a, Ty>> + HasDataLayout
+{
+  arg.extend_integer_width_to(32);
+}
+
+pub fn compute_abi_info<'a, Ty, C>(cx: C, fty: &mut FnType<'a, Ty>)
+  where Ty: TyLayoutMethods<'a, C> + Copy,
+        C: LayoutOf<Ty = Ty, TyLayout = TyLayout<'a, Ty>> + HasDataLayout
+{
+  if !fty.ret.is_ignore() {
+    classify_ret_ty(cx, &mut fty.ret);
+  }
+
+  for arg in &mut fty.args {
+    if arg.is_ignore() {
+      continue;
+    }
+    classify_arg_ty(cx, arg);
+  }
+}
diff --git a/src/librustc_target/abi/call/mod.rs b/src/librustc_target/abi/call/mod.rs
index 78ed4b2d615a..788497a378fe 100644
--- a/src/librustc_target/abi/call/mod.rs
+++ b/src/librustc_target/abi/call/mod.rs
@@ -13,6 +13,7 @@ use abi::{HasDataLayout, LayoutOf, TyLayout, TyLayoutMethods};
 use spec::HasTargetSpec;
 
 mod aarch64;
+mod amdgpu;
 mod arm;
 mod asmjs;
 mod hexagon;
@@ -503,6 +504,7 @@ impl<'a, Ty> FnType<'a, Ty> {
                 x86_64::compute_abi_info(cx, self);
             },
             "aarch64" => aarch64::compute_abi_info(cx, self),
+            "amdgpu" => amdgpu::compute_abi_info(cx, self),
             "arm" => arm::compute_abi_info(cx, self),
             "mips" => mips::compute_abi_info(cx, self),
             "mips64" => mips64::compute_abi_info(cx, self),