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Adds the libcall_call_conv setting and use it for libcall calls expansion;

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This commit is contained in:
Benjamin Bouvier
2019-08-05 12:23:39 +02:00
committed by Dan Gohman
parent c7b4b98cac
commit d8d3602257
5 changed files with 63 additions and 4 deletions
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13
cranelift/codegen/src/legalizer/libcall.rs
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@@ -2,7 +2,7 @@
use crate::ir;
use crate::ir::{get_libcall_funcref, InstBuilder};
use crate::isa::TargetIsa;
use crate::isa::{CallConv, TargetIsa};
use crate::legalizer::boundary::legalize_libcall_signature;
use std::vec::Vec;
@@ -18,8 +18,17 @@ pub fn expand_as_libcall(inst: ir::Inst, func: &mut ir::Function, isa: &dyn Targ
// Now we convert `inst` to a call. First save the arguments.
let mut args = Vec::new();
args.extend_from_slice(func.dfg.inst_args(inst));
let call_conv = CallConv::for_libcall(isa);
if call_conv == CallConv::Baldrdash {
let vmctx = func
.special_param(ir::ArgumentPurpose::VMContext)
.expect("Missing vmctx parameter for baldrdash libcall");
args.push(vmctx);
}
// The replace builder will preserve the instruction result values.
let funcref = get_libcall_funcref(libcall, func, inst, isa);
let funcref = get_libcall_funcref(libcall, call_conv, func, inst, isa);
func.dfg.replace(inst).call(funcref, &args);
// Ask the ISA to legalize the signature.