From 9aac0c9ae39de7046af35788d19e5f9310e4cbb7 Mon Sep 17 00:00:00 2001 From: Veera Date: Sun, 3 Mar 2024 09:34:26 -0500 Subject: [PATCH] Mention Register Size in `#[warn(asm_sub_register)]` Fixes #121593 --- .../src/check/intrinsicck.rs | 22 ++++++++---- compiler/rustc_target/src/asm/aarch64.rs | 26 ++++++-------- compiler/rustc_target/src/asm/arm.rs | 6 ++-- compiler/rustc_target/src/asm/avr.rs | 6 ++-- compiler/rustc_target/src/asm/bpf.rs | 6 ++-- compiler/rustc_target/src/asm/csky.rs | 6 ++-- compiler/rustc_target/src/asm/hexagon.rs | 6 ++-- compiler/rustc_target/src/asm/loongarch.rs | 6 ++-- compiler/rustc_target/src/asm/m68k.rs | 6 ++-- compiler/rustc_target/src/asm/mips.rs | 6 ++-- compiler/rustc_target/src/asm/mod.rs | 20 +++++++---- compiler/rustc_target/src/asm/msp430.rs | 6 ++-- compiler/rustc_target/src/asm/nvptx.rs | 6 ++-- compiler/rustc_target/src/asm/powerpc.rs | 6 ++-- compiler/rustc_target/src/asm/riscv.rs | 6 ++-- compiler/rustc_target/src/asm/s390x.rs | 6 ++-- compiler/rustc_target/src/asm/spirv.rs | 6 ++-- compiler/rustc_target/src/asm/wasm.rs | 6 ++-- compiler/rustc_target/src/asm/x86.rs | 34 ++++++++----------- 19 files changed, 100 insertions(+), 92 deletions(-) diff --git a/compiler/rustc_hir_analysis/src/check/intrinsicck.rs b/compiler/rustc_hir_analysis/src/check/intrinsicck.rs index d03b02f028d..c78a6004f7a 100644 --- a/compiler/rustc_hir_analysis/src/check/intrinsicck.rs +++ b/compiler/rustc_hir_analysis/src/check/intrinsicck.rs @@ -6,7 +6,9 @@ use rustc_span::def_id::LocalDefId; use rustc_span::Symbol; use rustc_target::abi::FieldIdx; -use rustc_target::asm::{InlineAsmReg, InlineAsmRegClass, InlineAsmRegOrRegClass, InlineAsmType}; +use rustc_target::asm::{ + InlineAsmReg, InlineAsmRegClass, InlineAsmRegOrRegClass, InlineAsmType, ModifierInfo, +}; pub struct InlineAsmCtxt<'a, 'tcx> { tcx: TyCtxt<'tcx>, @@ -253,8 +255,11 @@ fn check_asm_operand_type( } // Check whether a modifier is suggested for using this type. - if let Some((suggested_modifier, suggested_result)) = - reg_class.suggest_modifier(asm_arch, asm_ty) + if let Some(ModifierInfo { + modifier: suggested_modifier, + result: suggested_result, + size: suggested_size, + }) = reg_class.suggest_modifier(asm_arch, asm_ty) { // Search for any use of this operand without a modifier and emit // the suggestion for them. @@ -268,8 +273,11 @@ fn check_asm_operand_type( } } if !spans.is_empty() { - let (default_modifier, default_result) = - reg_class.default_modifier(asm_arch).unwrap(); + let ModifierInfo { + modifier: default_modifier, + result: default_result, + size: default_size, + } = reg_class.default_modifier(asm_arch).unwrap(); self.tcx.node_span_lint( lint::builtin::ASM_SUB_REGISTER, expr.hir_id, @@ -278,10 +286,10 @@ fn check_asm_operand_type( |lint| { lint.span_label(expr.span, "for this argument"); lint.help(format!( - "use `{{{idx}:{suggested_modifier}}}` to have the register formatted as `{suggested_result}`", + "use `{{{idx}:{suggested_modifier}}}` to have the register formatted as `{suggested_result}` (for {suggested_size}-bit values)", )); lint.help(format!( - "or use `{{{idx}:{default_modifier}}}` to keep the default formatting of `{default_result}`", + "or use `{{{idx}:{default_modifier}}}` to keep the default formatting of `{default_result}` (for {default_size}-bit values)", )); }, ); diff --git a/compiler/rustc_target/src/asm/aarch64.rs b/compiler/rustc_target/src/asm/aarch64.rs index 97132311a5c..70528c1222c 100644 --- a/compiler/rustc_target/src/asm/aarch64.rs +++ b/compiler/rustc_target/src/asm/aarch64.rs @@ -1,4 +1,4 @@ -use super::{InlineAsmArch, InlineAsmType}; +use super::{InlineAsmArch, InlineAsmType, ModifierInfo}; use crate::spec::{RelocModel, Target}; use rustc_data_structures::fx::FxIndexSet; use rustc_macros::HashStable_Generic; @@ -27,32 +27,28 @@ pub fn suggest_class(self, _arch: InlineAsmArch, _ty: InlineAsmType) -> Option Option<(char, &'static str)> { + pub fn suggest_modifier(self, _arch: InlineAsmArch, ty: InlineAsmType) -> Option { match self { Self::reg => match ty.size().bits() { 64 => None, - _ => Some(('w', "w0")), + _ => Some(('w', "w0", 32).into()), }, Self::vreg | Self::vreg_low16 => match ty.size().bits() { - 8 => Some(('b', "b0")), - 16 => Some(('h', "h0")), - 32 => Some(('s', "s0")), - 64 => Some(('d', "d0")), - 128 => Some(('q', "q0")), + 8 => Some(('b', "b0", 8).into()), + 16 => Some(('h', "h0", 16).into()), + 32 => Some(('s', "s0", 32).into()), + 64 => Some(('d', "d0", 64).into()), + 128 => Some(('q', "q0", 128).into()), _ => None, }, Self::preg => None, } } - pub fn default_modifier(self, _arch: InlineAsmArch) -> Option<(char, &'static str)> { + pub fn default_modifier(self, _arch: InlineAsmArch) -> Option { match self { - Self::reg => Some(('x', "x0")), - Self::vreg | Self::vreg_low16 => Some(('v', "v0")), + Self::reg => Some(('x', "x0", 64).into()), + Self::vreg | Self::vreg_low16 => Some(('v', "v0", 128).into()), Self::preg => None, } } diff --git a/compiler/rustc_target/src/asm/arm.rs b/compiler/rustc_target/src/asm/arm.rs index 514e30ae020..f56dbac708b 100644 --- a/compiler/rustc_target/src/asm/arm.rs +++ b/compiler/rustc_target/src/asm/arm.rs @@ -1,4 +1,4 @@ -use super::{InlineAsmArch, InlineAsmType}; +use super::{InlineAsmArch, InlineAsmType, ModifierInfo}; use crate::spec::{RelocModel, Target}; use rustc_data_structures::fx::FxIndexSet; use rustc_macros::HashStable_Generic; @@ -35,11 +35,11 @@ pub fn suggest_modifier( self, _arch: InlineAsmArch, _ty: InlineAsmType, - ) -> Option<(char, &'static str)> { + ) -> Option { None } - pub fn default_modifier(self, _arch: InlineAsmArch) -> Option<(char, &'static str)> { + pub fn default_modifier(self, _arch: InlineAsmArch) -> Option { None } diff --git a/compiler/rustc_target/src/asm/avr.rs b/compiler/rustc_target/src/asm/avr.rs index 9a96a61f5b2..eab38a4a4f4 100644 --- a/compiler/rustc_target/src/asm/avr.rs +++ b/compiler/rustc_target/src/asm/avr.rs @@ -1,4 +1,4 @@ -use super::{InlineAsmArch, InlineAsmType}; +use super::{InlineAsmArch, InlineAsmType, ModifierInfo}; use rustc_macros::HashStable_Generic; use rustc_span::Symbol; use std::fmt; @@ -29,11 +29,11 @@ pub fn suggest_modifier( self, _arch: InlineAsmArch, _ty: InlineAsmType, - ) -> Option<(char, &'static str)> { + ) -> Option { None } - pub fn default_modifier(self, _arch: InlineAsmArch) -> Option<(char, &'static str)> { + pub fn default_modifier(self, _arch: InlineAsmArch) -> Option { None } diff --git a/compiler/rustc_target/src/asm/bpf.rs b/compiler/rustc_target/src/asm/bpf.rs index 3b03766a089..9bc94274675 100644 --- a/compiler/rustc_target/src/asm/bpf.rs +++ b/compiler/rustc_target/src/asm/bpf.rs @@ -1,4 +1,4 @@ -use super::{InlineAsmArch, InlineAsmType}; +use super::{InlineAsmArch, InlineAsmType, ModifierInfo}; use rustc_macros::HashStable_Generic; use rustc_span::Symbol; use std::fmt; @@ -23,11 +23,11 @@ pub fn suggest_modifier( self, _arch: InlineAsmArch, _ty: InlineAsmType, - ) -> Option<(char, &'static str)> { + ) -> Option { None } - pub fn default_modifier(self, _arch: InlineAsmArch) -> Option<(char, &'static str)> { + pub fn default_modifier(self, _arch: InlineAsmArch) -> Option { None } diff --git a/compiler/rustc_target/src/asm/csky.rs b/compiler/rustc_target/src/asm/csky.rs index db3d8106040..64607ee4b81 100644 --- a/compiler/rustc_target/src/asm/csky.rs +++ b/compiler/rustc_target/src/asm/csky.rs @@ -1,4 +1,4 @@ -use super::{InlineAsmArch, InlineAsmType}; +use super::{InlineAsmArch, InlineAsmType, ModifierInfo}; use rustc_macros::HashStable_Generic; use rustc_span::Symbol; use std::fmt; @@ -23,11 +23,11 @@ pub fn suggest_modifier( self, _arch: InlineAsmArch, _ty: InlineAsmType, - ) -> Option<(char, &'static str)> { + ) -> Option { None } - pub fn default_modifier(self, _arch: InlineAsmArch) -> Option<(char, &'static str)> { + pub fn default_modifier(self, _arch: InlineAsmArch) -> Option { None } diff --git a/compiler/rustc_target/src/asm/hexagon.rs b/compiler/rustc_target/src/asm/hexagon.rs index d20270ac9e9..19da7b80848 100644 --- a/compiler/rustc_target/src/asm/hexagon.rs +++ b/compiler/rustc_target/src/asm/hexagon.rs @@ -1,4 +1,4 @@ -use super::{InlineAsmArch, InlineAsmType}; +use super::{InlineAsmArch, InlineAsmType, ModifierInfo}; use rustc_macros::HashStable_Generic; use rustc_span::Symbol; use std::fmt; @@ -22,11 +22,11 @@ pub fn suggest_modifier( self, _arch: InlineAsmArch, _ty: InlineAsmType, - ) -> Option<(char, &'static str)> { + ) -> Option { None } - pub fn default_modifier(self, _arch: InlineAsmArch) -> Option<(char, &'static str)> { + pub fn default_modifier(self, _arch: InlineAsmArch) -> Option { None } diff --git a/compiler/rustc_target/src/asm/loongarch.rs b/compiler/rustc_target/src/asm/loongarch.rs index 9d1a4f3eeea..15d0f54ce3b 100644 --- a/compiler/rustc_target/src/asm/loongarch.rs +++ b/compiler/rustc_target/src/asm/loongarch.rs @@ -1,4 +1,4 @@ -use super::{InlineAsmArch, InlineAsmType}; +use super::{InlineAsmArch, InlineAsmType, ModifierInfo}; use rustc_macros::HashStable_Generic; use rustc_span::Symbol; use std::fmt; @@ -23,11 +23,11 @@ pub fn suggest_modifier( self, _arch: InlineAsmArch, _ty: InlineAsmType, - ) -> Option<(char, &'static str)> { + ) -> Option { None } - pub fn default_modifier(self, _arch: InlineAsmArch) -> Option<(char, &'static str)> { + pub fn default_modifier(self, _arch: InlineAsmArch) -> Option { None } diff --git a/compiler/rustc_target/src/asm/m68k.rs b/compiler/rustc_target/src/asm/m68k.rs index 8c857550cf2..ac94dcc03dc 100644 --- a/compiler/rustc_target/src/asm/m68k.rs +++ b/compiler/rustc_target/src/asm/m68k.rs @@ -1,4 +1,4 @@ -use super::{InlineAsmArch, InlineAsmType}; +use super::{InlineAsmArch, InlineAsmType, ModifierInfo}; use rustc_macros::HashStable_Generic; use rustc_span::Symbol; use std::fmt; @@ -24,11 +24,11 @@ pub fn suggest_modifier( self, _arch: InlineAsmArch, _ty: InlineAsmType, - ) -> Option<(char, &'static str)> { + ) -> Option { None } - pub fn default_modifier(self, _arch: InlineAsmArch) -> Option<(char, &'static str)> { + pub fn default_modifier(self, _arch: InlineAsmArch) -> Option { None } diff --git a/compiler/rustc_target/src/asm/mips.rs b/compiler/rustc_target/src/asm/mips.rs index 4e7c2eb1bf8..0ac1a43ae18 100644 --- a/compiler/rustc_target/src/asm/mips.rs +++ b/compiler/rustc_target/src/asm/mips.rs @@ -1,4 +1,4 @@ -use super::{InlineAsmArch, InlineAsmType}; +use super::{InlineAsmArch, InlineAsmType, ModifierInfo}; use rustc_macros::HashStable_Generic; use rustc_span::Symbol; use std::fmt; @@ -23,11 +23,11 @@ pub fn suggest_modifier( self, _arch: InlineAsmArch, _ty: InlineAsmType, - ) -> Option<(char, &'static str)> { + ) -> Option { None } - pub fn default_modifier(self, _arch: InlineAsmArch) -> Option<(char, &'static str)> { + pub fn default_modifier(self, _arch: InlineAsmArch) -> Option { None } diff --git a/compiler/rustc_target/src/asm/mod.rs b/compiler/rustc_target/src/asm/mod.rs index a11884bea26..bfb6ae0b2d9 100644 --- a/compiler/rustc_target/src/asm/mod.rs +++ b/compiler/rustc_target/src/asm/mod.rs @@ -6,6 +6,18 @@ use std::fmt; use std::str::FromStr; +pub struct ModifierInfo { + pub modifier: char, + pub result: &'static str, + pub size: u64, +} + +impl From<(char, &'static str, u64)> for ModifierInfo { + fn from(value: (char, &'static str, u64)) -> Self { + Self { modifier: value.0, result: value.1, size: value.2 } + } +} + macro_rules! def_reg_class { ($arch:ident $arch_regclass:ident { $( @@ -512,11 +524,7 @@ pub fn suggest_class(self, arch: InlineAsmArch, ty: InlineAsmType) -> Option Option<(char, &'static str)> { + pub fn suggest_modifier(self, arch: InlineAsmArch, ty: InlineAsmType) -> Option { match self { Self::X86(r) => r.suggest_modifier(arch, ty), Self::Arm(r) => r.suggest_modifier(arch, ty), @@ -545,7 +553,7 @@ pub fn suggest_modifier( /// This is only needed when the register class can suggest a modifier, so /// that the user can be shown how to get the default behavior without a /// warning. - pub fn default_modifier(self, arch: InlineAsmArch) -> Option<(char, &'static str)> { + pub fn default_modifier(self, arch: InlineAsmArch) -> Option { match self { Self::X86(r) => r.default_modifier(arch), Self::Arm(r) => r.default_modifier(arch), diff --git a/compiler/rustc_target/src/asm/msp430.rs b/compiler/rustc_target/src/asm/msp430.rs index a27d6390a72..439f3ba0b57 100644 --- a/compiler/rustc_target/src/asm/msp430.rs +++ b/compiler/rustc_target/src/asm/msp430.rs @@ -1,4 +1,4 @@ -use super::{InlineAsmArch, InlineAsmType}; +use super::{InlineAsmArch, InlineAsmType, ModifierInfo}; use rustc_macros::HashStable_Generic; use rustc_span::Symbol; use std::fmt; @@ -22,11 +22,11 @@ pub fn suggest_modifier( self, _arch: InlineAsmArch, _ty: InlineAsmType, - ) -> Option<(char, &'static str)> { + ) -> Option { None } - pub fn default_modifier(self, _arch: InlineAsmArch) -> Option<(char, &'static str)> { + pub fn default_modifier(self, _arch: InlineAsmArch) -> Option { None } diff --git a/compiler/rustc_target/src/asm/nvptx.rs b/compiler/rustc_target/src/asm/nvptx.rs index 8e1e91e7c5f..57aa50fceb8 100644 --- a/compiler/rustc_target/src/asm/nvptx.rs +++ b/compiler/rustc_target/src/asm/nvptx.rs @@ -1,4 +1,4 @@ -use super::{InlineAsmArch, InlineAsmType}; +use super::{InlineAsmArch, InlineAsmType, ModifierInfo}; use rustc_macros::HashStable_Generic; use rustc_span::Symbol; @@ -23,11 +23,11 @@ pub fn suggest_modifier( self, _arch: InlineAsmArch, _ty: InlineAsmType, - ) -> Option<(char, &'static str)> { + ) -> Option { None } - pub fn default_modifier(self, _arch: InlineAsmArch) -> Option<(char, &'static str)> { + pub fn default_modifier(self, _arch: InlineAsmArch) -> Option { None } diff --git a/compiler/rustc_target/src/asm/powerpc.rs b/compiler/rustc_target/src/asm/powerpc.rs index d3ccb30350a..4e8cbe34de9 100644 --- a/compiler/rustc_target/src/asm/powerpc.rs +++ b/compiler/rustc_target/src/asm/powerpc.rs @@ -1,4 +1,4 @@ -use super::{InlineAsmArch, InlineAsmType}; +use super::{InlineAsmArch, InlineAsmType, ModifierInfo}; use rustc_macros::HashStable_Generic; use rustc_span::Symbol; use std::fmt; @@ -26,11 +26,11 @@ pub fn suggest_modifier( self, _arch: InlineAsmArch, _ty: InlineAsmType, - ) -> Option<(char, &'static str)> { + ) -> Option { None } - pub fn default_modifier(self, _arch: InlineAsmArch) -> Option<(char, &'static str)> { + pub fn default_modifier(self, _arch: InlineAsmArch) -> Option { None } diff --git a/compiler/rustc_target/src/asm/riscv.rs b/compiler/rustc_target/src/asm/riscv.rs index dea6d50fe2b..2505d36f5b8 100644 --- a/compiler/rustc_target/src/asm/riscv.rs +++ b/compiler/rustc_target/src/asm/riscv.rs @@ -1,4 +1,4 @@ -use super::{InlineAsmArch, InlineAsmType}; +use super::{InlineAsmArch, InlineAsmType, ModifierInfo}; use crate::spec::{RelocModel, Target}; use rustc_data_structures::fx::FxIndexSet; use rustc_macros::HashStable_Generic; @@ -26,11 +26,11 @@ pub fn suggest_modifier( self, _arch: InlineAsmArch, _ty: InlineAsmType, - ) -> Option<(char, &'static str)> { + ) -> Option { None } - pub fn default_modifier(self, _arch: InlineAsmArch) -> Option<(char, &'static str)> { + pub fn default_modifier(self, _arch: InlineAsmArch) -> Option { None } diff --git a/compiler/rustc_target/src/asm/s390x.rs b/compiler/rustc_target/src/asm/s390x.rs index b8afeb824d8..6bc668454b1 100644 --- a/compiler/rustc_target/src/asm/s390x.rs +++ b/compiler/rustc_target/src/asm/s390x.rs @@ -1,4 +1,4 @@ -use super::{InlineAsmArch, InlineAsmType}; +use super::{InlineAsmArch, InlineAsmType, ModifierInfo}; use rustc_macros::HashStable_Generic; use rustc_span::Symbol; use std::fmt; @@ -24,11 +24,11 @@ pub fn suggest_modifier( self, _arch: InlineAsmArch, _ty: InlineAsmType, - ) -> Option<(char, &'static str)> { + ) -> Option { None } - pub fn default_modifier(self, _arch: InlineAsmArch) -> Option<(char, &'static str)> { + pub fn default_modifier(self, _arch: InlineAsmArch) -> Option { None } diff --git a/compiler/rustc_target/src/asm/spirv.rs b/compiler/rustc_target/src/asm/spirv.rs index 31073da10b2..d13a6131f9a 100644 --- a/compiler/rustc_target/src/asm/spirv.rs +++ b/compiler/rustc_target/src/asm/spirv.rs @@ -1,4 +1,4 @@ -use super::{InlineAsmArch, InlineAsmType}; +use super::{InlineAsmArch, InlineAsmType, ModifierInfo}; use rustc_macros::HashStable_Generic; use rustc_span::Symbol; @@ -21,11 +21,11 @@ pub fn suggest_modifier( self, _arch: InlineAsmArch, _ty: InlineAsmType, - ) -> Option<(char, &'static str)> { + ) -> Option { None } - pub fn default_modifier(self, _arch: InlineAsmArch) -> Option<(char, &'static str)> { + pub fn default_modifier(self, _arch: InlineAsmArch) -> Option { None } diff --git a/compiler/rustc_target/src/asm/wasm.rs b/compiler/rustc_target/src/asm/wasm.rs index f095b7c6e11..eb0b23ef43d 100644 --- a/compiler/rustc_target/src/asm/wasm.rs +++ b/compiler/rustc_target/src/asm/wasm.rs @@ -1,4 +1,4 @@ -use super::{InlineAsmArch, InlineAsmType}; +use super::{InlineAsmArch, InlineAsmType, ModifierInfo}; use rustc_macros::HashStable_Generic; use rustc_span::Symbol; @@ -21,11 +21,11 @@ pub fn suggest_modifier( self, _arch: InlineAsmArch, _ty: InlineAsmType, - ) -> Option<(char, &'static str)> { + ) -> Option { None } - pub fn default_modifier(self, _arch: InlineAsmArch) -> Option<(char, &'static str)> { + pub fn default_modifier(self, _arch: InlineAsmArch) -> Option { None } diff --git a/compiler/rustc_target/src/asm/x86.rs b/compiler/rustc_target/src/asm/x86.rs index 3902dac7ff6..3b5da8806cc 100644 --- a/compiler/rustc_target/src/asm/x86.rs +++ b/compiler/rustc_target/src/asm/x86.rs @@ -1,4 +1,4 @@ -use super::{InlineAsmArch, InlineAsmType}; +use super::{InlineAsmArch, InlineAsmType, ModifierInfo}; use crate::spec::{RelocModel, Target}; use rustc_data_structures::fx::FxIndexSet; use rustc_macros::HashStable_Generic; @@ -53,32 +53,28 @@ pub fn suggest_class(self, _arch: InlineAsmArch, ty: InlineAsmType) -> Option Option<(char, &'static str)> { + pub fn suggest_modifier(self, arch: InlineAsmArch, ty: InlineAsmType) -> Option { match self { Self::reg => match ty.size().bits() { - 16 => Some(('x', "ax")), - 32 if arch == InlineAsmArch::X86_64 => Some(('e', "eax")), + 16 => Some(('x', "ax", 16).into()), + 32 if arch == InlineAsmArch::X86_64 => Some(('e', "eax", 32).into()), _ => None, }, Self::reg_abcd => match ty.size().bits() { - 16 => Some(('x', "ax")), - 32 if arch == InlineAsmArch::X86_64 => Some(('e', "eax")), + 16 => Some(('x', "ax", 16).into()), + 32 if arch == InlineAsmArch::X86_64 => Some(('e', "eax", 32).into()), _ => None, }, Self::reg_byte => None, Self::xmm_reg => None, Self::ymm_reg => match ty.size().bits() { 256 => None, - _ => Some(('x', "xmm0")), + _ => Some(('x', "xmm0", 128).into()), }, Self::zmm_reg => match ty.size().bits() { 512 => None, - 256 => Some(('y', "ymm0")), - _ => Some(('x', "xmm0")), + 256 => Some(('y', "ymm0", 256).into()), + _ => Some(('x', "xmm0", 128).into()), }, Self::kreg | Self::kreg0 => None, Self::mmx_reg | Self::x87_reg => None, @@ -86,19 +82,19 @@ pub fn suggest_modifier( } } - pub fn default_modifier(self, arch: InlineAsmArch) -> Option<(char, &'static str)> { + pub fn default_modifier(self, arch: InlineAsmArch) -> Option { match self { Self::reg | Self::reg_abcd => { if arch == InlineAsmArch::X86_64 { - Some(('r', "rax")) + Some(('r', "rax", 64).into()) } else { - Some(('e', "eax")) + Some(('e', "eax", 32).into()) } } Self::reg_byte => None, - Self::xmm_reg => Some(('x', "xmm0")), - Self::ymm_reg => Some(('y', "ymm0")), - Self::zmm_reg => Some(('z', "zmm0")), + Self::xmm_reg => Some(('x', "xmm0", 128).into()), + Self::ymm_reg => Some(('y', "ymm0", 256).into()), + Self::zmm_reg => Some(('z', "zmm0", 512).into()), Self::kreg | Self::kreg0 => None, Self::mmx_reg | Self::x87_reg => None, Self::tmm_reg => None,