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rustc: Add some methods for trans for mallocing uniques

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This commit is contained in:
Brian Anderson 2012-05-09 12:32:34 -07:00
parent 508ccca014
commit 45933ca485
1 changed files with 26 additions and 0 deletions
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26
src/rustc/middle/trans/base.rs
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@ -384,6 +384,32 @@ fn malloc_boxed(bcx: block, t: ty::t) -> {box: ValueRef, body: ValueRef} {
ret {box: box, body: body};
}
fn malloc_unique_raw(bcx: block, t: ty::t) -> ValueRef {
let _icx = bcx.insn_ctxt("malloc_unique_box_raw");
let ccx = bcx.ccx();
// Grab the TypeRef type of box_ptr, because that's what trans_raw_malloc
// wants.
let box_ptr = ty::mk_imm_uniq(ccx.tcx, t);
let llty = type_of(ccx, box_ptr);
// Get the tydesc for the body:
let mut static_ti = none;
let lltydesc = get_tydesc(ccx, t, static_ti);
lazily_emit_all_tydesc_glue(ccx, static_ti);
// Allocate space:
let rval = Call(bcx, ccx.upcalls.exchange_malloc, [lltydesc]);
ret PointerCast(bcx, rval, llty);
}
fn malloc_unique(bcx: block, t: ty::t) -> {box: ValueRef, body: ValueRef} {
let _icx = bcx.insn_ctxt("malloc_unique_box");
let box = malloc_unique_raw(bcx, t);
let body = GEPi(bcx, box, [0u, abi::box_field_body]);
ret {box: box, body: body};
}
// Type descriptor and type glue stuff
fn get_tydesc_simple(ccx: @crate_ctxt, t: ty::t) -> ValueRef {