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x64: Migrate call and call_indirect to ISLE (#4542)

Browse Source 
https://github.com/bytecodealliance/wasmtime/pull/4542
This commit is contained in:
Trevor Elliott
2022-07-28 13:10:03 -07:00
committed by GitHub
parent 32979b2714
commit 29d4edc76b
7 changed files with 152 additions and 66 deletions
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47
cranelift/codegen/src/isa/x64/lower.rs
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@@ -925,53 +925,12 @@ fn lower_insn_to_regs<C: LowerCtx<I = Inst>>(
| Opcode::FuncAddr
| Opcode::SymbolValue
| Opcode::FallthroughReturn
| Opcode::Return => {
| Opcode::Return
| Opcode::Call
| Opcode::CallIndirect => {
implemented_in_isle(ctx);
}
Opcode::Call | Opcode::CallIndirect => {
let caller_conv = ctx.abi().call_conv();
let (mut abi, inputs) = match op {
Opcode::Call => {
let (extname, dist) = ctx.call_target(insn).unwrap();
let sig = ctx.call_sig(insn).unwrap();
assert_eq!(inputs.len(), sig.params.len());
assert_eq!(outputs.len(), sig.returns.len());
(
X64ABICaller::from_func(sig, &extname, dist, caller_conv, flags)?,
&inputs[..],
)
}
Opcode::CallIndirect => {
let ptr = put_input_in_reg(ctx, inputs[0]);
let sig = ctx.call_sig(insn).unwrap();
assert_eq!(inputs.len() - 1, sig.params.len());
assert_eq!(outputs.len(), sig.returns.len());
(
X64ABICaller::from_ptr(sig, ptr, op, caller_conv, flags)?,
&inputs[1..],
)
}
_ => unreachable!(),
};
abi.emit_stack_pre_adjust(ctx);
assert_eq!(inputs.len(), abi.num_args());
for i in abi.get_copy_to_arg_order() {
let input = inputs[i];
let arg_regs = put_input_in_regs(ctx, input);
abi.emit_copy_regs_to_arg(ctx, i, arg_regs);
}
abi.emit_call(ctx);
for (i, output) in outputs.iter().enumerate() {
let retval_regs = get_output_reg(ctx, *output);
abi.emit_copy_retval_to_regs(ctx, i, retval_regs);
}
abi.emit_stack_post_adjust(ctx);
}
Opcode::Trapif | Opcode::Trapff => {
let trap_code = ctx.data(insn).trap_code().unwrap();