Fix C aggregate-passing ABI on powerpc

src/librustc_target/abi/call/mod.rs

@@ -554,7 +554,7 @@ impl<'a, Ty> FnAbi<'a, Ty> {
             "arm" => arm::compute_abi_info(cx, self),
             "mips" => mips::compute_abi_info(cx, self),
             "mips64" => mips64::compute_abi_info(cx, self),
-            "powerpc" => powerpc::compute_abi_info(cx, self),
+            "powerpc" => powerpc::compute_abi_info(self),
             "powerpc64" => powerpc64::compute_abi_info(cx, self),
             "s390x" => s390x::compute_abi_info(cx, self),
             "msp430" => msp430::compute_abi_info(self),

src/librustc_target/abi/call/powerpc.rs

@@ -1,49 +1,28 @@
-use crate::abi::call::{ArgAbi, FnAbi, Reg, Uniform};
-use crate::abi::{HasDataLayout, LayoutOf, Size, TyLayoutMethods};
+use crate::abi::call::{ArgAbi, FnAbi};
 
-fn classify_ret<'a, Ty, C>(cx: &C, ret: &mut ArgAbi<'_, Ty>, offset: &mut Size)
-    where Ty: TyLayoutMethods<'a, C>, C: LayoutOf<Ty = Ty> + HasDataLayout
-{
-    if !ret.layout.is_aggregate() {
-        ret.extend_integer_width_to(32);
-    } else {
+fn classify_ret<Ty>(ret: &mut ArgAbi<'_, Ty>) {
+    if ret.layout.is_aggregate() {
         ret.make_indirect();
-        *offset += cx.data_layout().pointer_size;
+    } else {
+        ret.extend_integer_width_to(32);
     }
 }
 
-fn classify_arg<'a, Ty, C>(cx: &C, arg: &mut ArgAbi<'_, Ty>, offset: &mut Size)
-    where Ty: TyLayoutMethods<'a, C>, C: LayoutOf<Ty = Ty> + HasDataLayout
-{
-    let dl = cx.data_layout();
-    let size = arg.layout.size;
-    let align = arg.layout.align.max(dl.i32_align).min(dl.i64_align).abi;
-
+fn classify_arg<Ty>(arg: &mut ArgAbi<'_, Ty>) {
     if arg.layout.is_aggregate() {
-        arg.cast_to(Uniform {
-            unit: Reg::i32(),
-            total: size
-        });
-        if !offset.is_aligned(align) {
-            arg.pad_with(Reg::i32());
-        }
+        arg.make_indirect();
     } else {
         arg.extend_integer_width_to(32);
     }
-
-    *offset = offset.align_to(align) + size.align_to(align);
 }
 
-pub fn compute_abi_info<'a, Ty, C>(cx: &C, fn_abi: &mut FnAbi<'_, Ty>)
-    where Ty: TyLayoutMethods<'a, C>, C: LayoutOf<Ty = Ty> + HasDataLayout
-{
-    let mut offset = Size::ZERO;
+pub fn compute_abi_info<Ty>(fn_abi: &mut FnAbi<'_, Ty>) {
     if !fn_abi.ret.is_ignore() {
-        classify_ret(cx, &mut fn_abi.ret, &mut offset);
+        classify_ret(&mut fn_abi.ret);
     }
 
     for arg in &mut fn_abi.args {
         if arg.is_ignore() { continue; }
-        classify_arg(cx, arg, &mut offset);
+        classify_arg(arg);
     }
 }