Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

ARM: Only allow using d16-d31 with asm! when supported by the target #94339

Merged
merged 1 commit into from
Mar 4, 2022
Merged

ARM: Only allow using d16-d31 with asm! when supported by the target #94339

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
1 change: 1 addition & 0 deletions compiler/rustc_codegen_ssa/src/target_features.rs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -36,6 +36,7 @@ const ARM_ALLOWED_FEATURES: &[(&str, Option<Symbol>)] = &[
// #[target_feature].
("thumb-mode", Some(sym::arm_target_feature)),
("thumb2", Some(sym::arm_target_feature)),
("d32", Some(sym::arm_target_feature)),
Copy link
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Hm, given that these three features seem to be fated to remain unstable, maybe a different feature gate would be warranted for these?

Copy link
Member Author

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

The 32-bit ARM features are bit of a mess and will need to be reworked anyways before stabilization can be considered.

];

const AARCH64_ALLOWED_FEATURES: &[(&str, Option<Symbol>)] = &[
Expand Down
1 change: 1 addition & 0 deletions compiler/rustc_span/src/symbol.rs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -539,6 +539,7 @@ symbols! {
custom_inner_attributes,
custom_test_frameworks,
d,
d32,
dbg_macro,
dead_code,
dealloc,
Expand Down
5 changes: 4 additions & 1 deletion compiler/rustc_target/src/asm/arm.rs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -50,9 +50,12 @@ impl ArmInlineAsmRegClass {
match self {
Self::reg => types! { _: I8, I16, I32, F32; },
Self::sreg | Self::sreg_low16 => types! { vfp2: I32, F32; },
Self::dreg | Self::dreg_low16 | Self::dreg_low8 => types! {
Self::dreg_low16 | Self::dreg_low8 => types! {
vfp2: I64, F64, VecI8(8), VecI16(4), VecI32(2), VecI64(1), VecF32(2);
},
Self::dreg => types! {
d32: I64, F64, VecI8(8), VecI16(4), VecI32(2), VecI64(1), VecF32(2);
},
Self::qreg | Self::qreg_low8 | Self::qreg_low4 => types! {
neon: VecI8(16), VecI16(8), VecI32(4), VecI64(2), VecF32(4);
},
Expand Down