bjoernager/rust
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Add asm label support to AST and HIR

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This commit is contained in:
Gary Guo 2023-12-25 20:53:01 +00:00
parent 8f359beca4
commit 93fa8579c6
25 changed files with 143 additions and 21 deletions
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27
compiler/rustc_ast_lowering/src/asm.rs
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@ -3,9 +3,9 @@ use crate::{ImplTraitContext, ImplTraitPosition, ParamMode, ResolverAstLoweringE
use super::errors::{
AbiSpecifiedMultipleTimes, AttSyntaxOnlyX86, ClobberAbiNotSupported,
InlineAsmUnsupportedTarget, InvalidAbiClobberAbi, InvalidAsmTemplateModifierConst,
InvalidAsmTemplateModifierRegClass, InvalidAsmTemplateModifierRegClassSub,
InvalidAsmTemplateModifierSym, InvalidRegister, InvalidRegisterClass, RegisterClassOnlyClobber,
RegisterConflict,
InvalidAsmTemplateModifierLabel, InvalidAsmTemplateModifierRegClass,
InvalidAsmTemplateModifierRegClassSub, InvalidAsmTemplateModifierSym, InvalidRegister,
InvalidRegisterClass, RegisterClassOnlyClobber, RegisterConflict,
};
use super::LoweringContext;
@ -236,6 +236,18 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
}
}
}
InlineAsmOperand::Label { block } => {
if !self.tcx.features().asm_goto {
feature_err(
sess,
sym::asm_goto,
*op_sp,
"label operands for inline assembly are unstable",
)
.emit();
}
hir::InlineAsmOperand::Label { block: self.lower_block(block, false) }
}
};
(op, self.lower_span(*op_sp))
})
@ -295,6 +307,12 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
op_span: op_sp,
});
}
hir::InlineAsmOperand::Label { .. } => {
self.dcx().emit_err(InvalidAsmTemplateModifierLabel {
placeholder_span,
op_span: op_sp,
});
}
}
}
}
@ -334,7 +352,8 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
hir::InlineAsmOperand::Const { .. }
| hir::InlineAsmOperand::SymFn { .. }
| hir::InlineAsmOperand::SymStatic { .. } => {
| hir::InlineAsmOperand::SymStatic { .. }
| hir::InlineAsmOperand::Label { .. } => {
unreachable!("{op:?} is not a register operand");
}
};