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rustc: Don't emit memset for non-structural types

This commit is contained in:
Patrick Walton 2011-08-04 18:23:58 -07:00
parent 66a255ac92
commit 3d5a777fe1
1 changed files with 13 additions and 2 deletions
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15
src/comp/middle/trans.rs
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@ -2349,7 +2349,12 @@ fn drop_slot(cx: &@block_ctxt, slot: ValueRef, t: &ty::t) -> result {
let re = drop_ty(cx, llptr, t);
let llty = val_ty(slot);
let llelemty = lib::llvm::llvm::LLVMGetElementType(llty);
call_bzero(cx, slot, llsize_of(llelemty), C_uint(1u));
if ty::type_is_structural(bcx_tcx(cx), t) {
call_bzero(cx, slot, C_uint(llsize_of_real(bcx_ccx(cx), llelemty)),
C_uint(llalign_of_real(bcx_ccx(cx), llelemty)));
} else {
cx.build.Store(C_null(llelemty), slot);
}
ret re;
}
@ -5855,7 +5860,13 @@ fn zero_alloca(cx: &@block_ctxt, llptr: ValueRef, t: ty::t) -> result {
bcx = call_bzero(llalign.bcx, llptr, llsz.val, llalign.val).bcx;
} else {
let llty = type_of(bcx_ccx(bcx), cx.sp, t);
bcx = call_bzero(cx, llptr, llsize_of(llty), C_uint(1u)).bcx;
if ty::type_is_structural(bcx_tcx(cx), t) {
bcx = call_bzero(cx, llptr,
C_uint(llsize_of_real(bcx_ccx(cx), llty)),
C_uint(llalign_of_real(bcx_ccx(cx), llty))).bcx;
} else {
bcx.build.Store(C_null(llty), llptr);
}
}
ret rslt(bcx, llptr);
}