use crate::type_::Type;
use crate::type_of::LayoutLlvmExt;
use crate::value::Value;
-use rustc_codegen_ssa::mir::operand::OperandRef;
-use rustc_codegen_ssa::traits::{BaseTypeMethods, BuilderMethods, ConstMethods, DerivedTypeMethods};
use rustc::ty::layout::{Align, HasDataLayout, HasTyCtxt, LayoutOf, Size};
use rustc::ty::Ty;
+use rustc_codegen_ssa::mir::operand::OperandRef;
+use rustc_codegen_ssa::traits::{
+ BaseTypeMethods, BuilderMethods, ConstMethods, DerivedTypeMethods,
+};
#[allow(dead_code)]
fn round_pointer_up_to_alignment(
bx: &mut Builder<'a, 'll, 'tcx>,
addr: &'ll Value,
align: Align,
- ptr_ty: &'ll Type
+ ptr_ty: &'ll Type,
) -> &'ll Value {
let mut ptr_as_int = bx.ptrtoint(addr, bx.cx().type_isize());
ptr_as_int = bx.add(ptr_as_int, bx.cx().const_i32(align.bytes() as i32 - 1));
size: Size,
align: Align,
slot_size: Align,
- allow_higher_align: bool
+ allow_higher_align: bool,
) -> (&'ll Value, Align) {
let va_list_ptr_ty = bx.cx().type_ptr_to(bx.cx.type_i8p());
let va_list_addr = if list.layout.llvm_type(bx.cx) != va_list_ptr_ty {
(ptr, slot_size)
};
-
let aligned_size = size.align_to(slot_size).bytes() as i32;
let full_direct_size = bx.cx().const_i32(aligned_size);
let next = bx.inbounds_gep(addr, &[full_direct_size]);
bx.store(next, va_list_addr, bx.tcx().data_layout.pointer_align.abi);
- if size.bytes() < slot_size.bytes() &&
- &*bx.tcx().sess.target.target.target_endian == "big" {
+ if size.bytes() < slot_size.bytes() && &*bx.tcx().sess.target.target.target_endian == "big" {
let adjusted_size = bx.cx().const_i32((slot_size.bytes() - size.bytes()) as i32);
let adjusted = bx.inbounds_gep(addr, &[adjusted_size]);
(bx.bitcast(adjusted, bx.cx().type_ptr_to(llty)), addr_align)
target_ty: Ty<'tcx>,
indirect: bool,
slot_size: Align,
- allow_higher_align: bool
+ allow_higher_align: bool,
) -> &'ll Value {
let layout = bx.cx.layout_of(target_ty);
let (llty, size, align) = if indirect {
- (bx.cx.layout_of(bx.cx.tcx.mk_imm_ptr(target_ty)).llvm_type(bx.cx),
- bx.cx.data_layout().pointer_size,
- bx.cx.data_layout().pointer_align)
+ (
+ bx.cx.layout_of(bx.cx.tcx.mk_imm_ptr(target_ty)).llvm_type(bx.cx),
+ bx.cx.data_layout().pointer_size,
+ bx.cx.data_layout().pointer_align,
+ )
} else {
- (layout.llvm_type(bx.cx),
- layout.size,
- layout.align)
+ (layout.llvm_type(bx.cx), layout.size, layout.align)
};
- let (addr, addr_align) = emit_direct_ptr_va_arg(bx, list, llty, size, align.abi,
- slot_size, allow_higher_align);
+ let (addr, addr_align) =
+ emit_direct_ptr_va_arg(bx, list, llty, size, align.abi, slot_size, allow_higher_align);
if indirect {
let tmp_ret = bx.load(addr, addr_align);
bx.load(tmp_ret, align.abi)
match (&**arch, target.options.is_like_windows) {
// Windows x86
("x86", true) => {
- emit_ptr_va_arg(bx, addr, target_ty, false,
- Align::from_bytes(4).unwrap(), false)
+ emit_ptr_va_arg(bx, addr, target_ty, false, Align::from_bytes(4).unwrap(), false)
}
// Generic x86
("x86", _) => {
- emit_ptr_va_arg(bx, addr, target_ty, false,
- Align::from_bytes(4).unwrap(), true)
+ emit_ptr_va_arg(bx, addr, target_ty, false, Align::from_bytes(4).unwrap(), true)
}
// Windows AArch64
("aarch64", true) => {
- emit_ptr_va_arg(bx, addr, target_ty, false,
- Align::from_bytes(8).unwrap(), false)
+ emit_ptr_va_arg(bx, addr, target_ty, false, Align::from_bytes(8).unwrap(), false)
}
// iOS AArch64
("aarch64", _) if target.target_os == "ios" => {
- emit_ptr_va_arg(bx, addr, target_ty, false,
- Align::from_bytes(8).unwrap(), true)
+ emit_ptr_va_arg(bx, addr, target_ty, false, Align::from_bytes(8).unwrap(), true)
}
// Windows x86_64
("x86_64", true) => {
let target_ty_size = bx.cx.size_of(target_ty).bytes();
- let indirect = if target_ty_size > 8 || !target_ty_size.is_power_of_two() {
- true
- } else {
- false
- };
- emit_ptr_va_arg(bx, addr, target_ty, indirect,
- Align::from_bytes(8).unwrap(), false)
+ let indirect =
+ if target_ty_size > 8 || !target_ty_size.is_power_of_two() { true } else { false };
+ emit_ptr_va_arg(bx, addr, target_ty, indirect, Align::from_bytes(8).unwrap(), false)
}
// For all other architecture/OS combinations fall back to using
// the LLVM va_arg instruction.
// https://llvm.org/docs/LangRef.html#va-arg-instruction
- _ => {
- let va_list = if (target.arch == "aarch64" ||
- target.arch == "x86_64" ||
- target.arch == "powerpc") &&
- !target.options.is_like_windows {
- bx.load(addr.immediate(), bx.tcx().data_layout.pointer_align.abi)
- } else {
- addr.immediate()
- };
- bx.va_arg(va_list, bx.cx.layout_of(target_ty).llvm_type(bx.cx))
- }
+ _ => bx.va_arg(addr.immediate(), bx.cx.layout_of(target_ty).llvm_type(bx.cx)),
}
}