diff options
Diffstat (limited to 'compiler/rustc_target/src/abi/call/nvptx64.rs')
-rw-r--r-- | compiler/rustc_target/src/abi/call/nvptx64.rs | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/compiler/rustc_target/src/abi/call/nvptx64.rs b/compiler/rustc_target/src/abi/call/nvptx64.rs new file mode 100644 index 000000000..fc16f1c97 --- /dev/null +++ b/compiler/rustc_target/src/abi/call/nvptx64.rs @@ -0,0 +1,64 @@ +use crate::abi::call::{ArgAbi, FnAbi, PassMode, Reg, Size, Uniform}; +use crate::abi::{HasDataLayout, TyAbiInterface}; + +fn classify_ret<Ty>(ret: &mut ArgAbi<'_, Ty>) { + if ret.layout.is_aggregate() && ret.layout.size.bits() > 64 { + ret.make_indirect(); + } +} + +fn classify_arg<Ty>(arg: &mut ArgAbi<'_, Ty>) { + if arg.layout.is_aggregate() && arg.layout.size.bits() > 64 { + arg.make_indirect(); + } +} + +fn classify_arg_kernel<'a, Ty, C>(_cx: &C, arg: &mut ArgAbi<'a, Ty>) +where + Ty: TyAbiInterface<'a, C> + Copy, + C: HasDataLayout, +{ + if matches!(arg.mode, PassMode::Pair(..)) && (arg.layout.is_adt() || arg.layout.is_tuple()) { + let align_bytes = arg.layout.align.abi.bytes(); + + let unit = match align_bytes { + 1 => Reg::i8(), + 2 => Reg::i16(), + 4 => Reg::i32(), + 8 => Reg::i64(), + 16 => Reg::i128(), + _ => unreachable!("Align is given as power of 2 no larger than 16 bytes"), + }; + arg.cast_to(Uniform { unit, total: Size::from_bytes(2 * align_bytes) }); + } +} + +pub fn compute_abi_info<Ty>(fn_abi: &mut FnAbi<'_, Ty>) { + if !fn_abi.ret.is_ignore() { + classify_ret(&mut fn_abi.ret); + } + + for arg in &mut fn_abi.args { + if arg.is_ignore() { + continue; + } + classify_arg(arg); + } +} + +pub fn compute_ptx_kernel_abi_info<'a, Ty, C>(cx: &C, fn_abi: &mut FnAbi<'a, Ty>) +where + Ty: TyAbiInterface<'a, C> + Copy, + C: HasDataLayout, +{ + if !fn_abi.ret.layout.is_unit() && !fn_abi.ret.layout.is_never() { + panic!("Kernels should not return anything other than () or !"); + } + + for arg in &mut fn_abi.args { + if arg.is_ignore() { + continue; + } + classify_arg_kernel(cx, arg); + } +} |