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Codegen: Combine two PointerCasts into one

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Shaves off a percent or so from the LLVM passes for librustc.
This commit is contained in:
Björn Steinbrink 2013-06-11 22:42:55 +02:00
parent d0b1979004
commit f526434197
1 changed files with 2 additions and 3 deletions

5
src/librustc/middle/trans/base.rs

@ -268,9 +268,8 @@ pub fn opaque_box_body(bcx: block,
boxptr: ValueRef) -> ValueRef {
let _icx = bcx.insn_ctxt("opaque_box_body");
let ccx = bcx.ccx();
let boxptr = PointerCast(bcx, boxptr, T_ptr(T_box_header(ccx)));
let bodyptr = GEPi(bcx, boxptr, [1u]);
PointerCast(bcx, bodyptr, T_ptr(type_of(ccx, body_t)))
let boxptr = PointerCast(bcx, boxptr, T_ptr(T_box(ccx, type_of(ccx, body_t))));
GEPi(bcx, boxptr, [0u, abi::box_field_body])
}
// malloc_raw_dyn: allocates a box to contain a given type, but with a