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rustc: Allow glue to be emitted even for scalar types; this is necessary to support compare glue

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This commit is contained in:
Patrick Walton 2011-04-19 11:25:40 -07:00
parent 6599b310f7
commit d9d5eb82a7
1 changed files with 40 additions and 45 deletions
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85
src/comp/middle/trans.rs
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@ -1694,53 +1694,48 @@ fn make_generic_glue(@local_ctxt cx,
auto bcx = new_top_block_ctxt(fcx); auto bcx = new_top_block_ctxt(fcx);
auto lltop = bcx.llbb; auto lltop = bcx.llbb;
if (!ty.type_is_scalar(t)) { // Any nontrivial glue is with values passed *by alias*; this is a
// requirement since in many contexts glue is invoked indirectly and
// the caller has no idea if it's dealing with something that can be
// passed by value.
// Any nontrivial glue is with values passed *by alias*; this is a auto llty;
// requirement since in many contexts glue is invoked indirectly and if (ty.type_has_dynamic_size(t)) {
// the caller has no idea if it's dealing with something that can be llty = T_ptr(T_i8());
// passed by value.
auto llty;
if (ty.type_has_dynamic_size(t)) {
llty = T_ptr(T_i8());
} else {
llty = T_ptr(type_of(cx.ccx, t));
}
auto ty_param_count = _vec.len[uint](ty_params);
auto lltyparams = llvm.LLVMGetParam(llfn, 3u);
auto lltydescs = _vec.empty_mut[ValueRef]();
auto p = 0u;
while (p < ty_param_count) {
auto llparam = bcx.build.GEP(lltyparams, vec(C_int(p as int)));
llparam = bcx.build.Load(llparam);
_vec.grow_set[ValueRef](lltydescs, ty_params.(p), 0 as ValueRef,
llparam);
p += 1u;
}
bcx.fcx.lltydescs = _vec.freeze[ValueRef](lltydescs);
auto llrawptr0 = llvm.LLVMGetParam(llfn, 4u);
auto llval0 = bcx.build.BitCast(llrawptr0, llty);
alt (helper) {
case (mgghf_single(?single_fn)) {
single_fn(bcx, llval0, t);
}
case (mgghf_cmp) {
auto llrawptr1 = llvm.LLVMGetParam(llfn, 5u);
auto llval1 = bcx.build.BitCast(llrawptr0, llty);
auto llcmpval = llvm.LLVMGetParam(llfn, 6u);
make_cmp_glue(bcx, llval0, llval1, t, llcmpval);
}
}
} else { } else {
bcx.build.RetVoid(); llty = T_ptr(type_of(cx.ccx, t));
}
auto ty_param_count = _vec.len[uint](ty_params);
auto lltyparams = llvm.LLVMGetParam(llfn, 3u);
auto lltydescs = _vec.empty_mut[ValueRef]();
auto p = 0u;
while (p < ty_param_count) {
auto llparam = bcx.build.GEP(lltyparams, vec(C_int(p as int)));
llparam = bcx.build.Load(llparam);
_vec.grow_set[ValueRef](lltydescs, ty_params.(p), 0 as ValueRef,
llparam);
p += 1u;
}
bcx.fcx.lltydescs = _vec.freeze[ValueRef](lltydescs);
auto llrawptr0 = llvm.LLVMGetParam(llfn, 4u);
auto llval0 = bcx.build.BitCast(llrawptr0, llty);
alt (helper) {
case (mgghf_single(?single_fn)) {
single_fn(bcx, llval0, t);
}
case (mgghf_cmp) {
auto llrawptr1 = llvm.LLVMGetParam(llfn, 5u);
auto llval1 = bcx.build.BitCast(llrawptr0, llty);
auto llcmpval = llvm.LLVMGetParam(llfn, 6u);
make_cmp_glue(bcx, llval0, llval1, t, llcmpval);
}
} }
// Tie up the llallocas -> lltop edge. // Tie up the llallocas -> lltop edge.