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Remove ancient register allocation (#3401)

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This commit is contained in:
Benjamin Bouvier
2021-09-30 21:27:23 +02:00
committed by GitHub
parent 80336f4535
commit bae4ec6427
66 changed files with 112 additions and 15380 deletions
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44
cranelift/codegen/src/ir/libcall.rs
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@@ -1,7 +1,7 @@
//! Naming well-known routines in the runtime library.
use crate::ir::{
types, AbiParam, ArgumentPurpose, ExtFuncData, ExternalName, FuncRef, Function, Inst, Opcode,
types, AbiParam, ArgumentPurpose, ExtFuncData, ExternalName, FuncRef, Function, Opcode,
Signature, Type,
};
use crate::isa::{CallConv, RegUnit, TargetIsa};
@@ -166,21 +166,6 @@ impl LibCall {
}
}
/// Get a function reference for `libcall` in `func`, following the signature
/// for `inst`.
///
/// If there is an existing reference, use it, otherwise make a new one.
pub(crate) fn get_libcall_funcref(
libcall: LibCall,
call_conv: CallConv,
func: &mut Function,
inst: Inst,
isa: &dyn TargetIsa,
) -> FuncRef {
find_funcref(libcall, func)
.unwrap_or_else(|| make_funcref_for_inst(libcall, call_conv, func, inst, isa))
}
/// Get a function reference for the probestack function in `func`.
///
/// If there is an existing reference, use it, otherwise make a new one.
@@ -227,33 +212,6 @@ fn make_funcref_for_probestack(
make_funcref(LibCall::Probestack, func, sig, isa)
}
/// Create a funcref for `libcall` with a signature matching `inst`.
fn make_funcref_for_inst(
libcall: LibCall,
call_conv: CallConv,
func: &mut Function,
inst: Inst,
isa: &dyn TargetIsa,
) -> FuncRef {
let mut sig = Signature::new(call_conv);
for &v in func.dfg.inst_args(inst) {
sig.params.push(AbiParam::new(func.dfg.value_type(v)));
}
for &v in func.dfg.inst_results(inst) {
sig.returns.push(AbiParam::new(func.dfg.value_type(v)));
}
if call_conv.extends_baldrdash() {
// Adds the special VMContext parameter to the signature.
sig.params.push(AbiParam::special(
isa.pointer_type(),
ArgumentPurpose::VMContext,
));
}
make_funcref(libcall, func, sig, isa)
}
/// Create a funcref for `libcall`.
fn make_funcref(
libcall: LibCall,