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Simplify gating of BPF w registers behind the alu32 target feature

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This is already handled by supported_types().
This commit is contained in:
Amanieu d'Antras 2022-02-17 12:46:47 +00:00
parent 1103d2e914
commit 2e8a7663b4
1 changed files with 12 additions and 26 deletions
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38
compiler/rustc_target/src/asm/bpf.rs
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@ -1,7 +1,6 @@
use super::{InlineAsmArch, InlineAsmType, Target};
use rustc_data_structures::stable_set::FxHashSet;
use super::{InlineAsmArch, InlineAsmType};
use rustc_macros::HashStable_Generic;
use rustc_span::{sym, Symbol};
use rustc_span::Symbol;
use std::fmt;
def_reg_class! {
@ -43,19 +42,6 @@ impl BpfInlineAsmRegClass {
}
}
fn only_alu32(
_arch: InlineAsmArch,
target_features: &FxHashSet<Symbol>,
_target: &Target,
_is_clobber: bool,
) -> Result<(), &'static str> {
if !target_features.contains(&sym::alu32) {
Err("register can't be used without the `alu32` target feature")
} else {
Ok(())
}
}
def_regs! {
Bpf BpfInlineAsmReg BpfInlineAsmRegClass {
r0: reg = ["r0"],
@ -68,16 +54,16 @@ def_regs! {
r7: reg = ["r7"],
r8: reg = ["r8"],
r9: reg = ["r9"],
w0: wreg = ["w0"] % only_alu32,
w1: wreg = ["w1"] % only_alu32,
w2: wreg = ["w2"] % only_alu32,
w3: wreg = ["w3"] % only_alu32,
w4: wreg = ["w4"] % only_alu32,
w5: wreg = ["w5"] % only_alu32,
w6: wreg = ["w6"] % only_alu32,
w7: wreg = ["w7"] % only_alu32,
w8: wreg = ["w8"] % only_alu32,
w9: wreg = ["w9"] % only_alu32,
w0: wreg = ["w0"],
w1: wreg = ["w1"],
w2: wreg = ["w2"],
w3: wreg = ["w3"],
w4: wreg = ["w4"],
w5: wreg = ["w5"],
w6: wreg = ["w6"],
w7: wreg = ["w7"],
w8: wreg = ["w8"],
w9: wreg = ["w9"],
#error = ["r10", "w10"] =>
"the stack pointer cannot be used as an operand for inline asm",