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rustc: optimize away some mallocs when building GEP args

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This commit is contained in:
Erick Tryzelaar 2012-10-18 08:03:04 -07:00
parent e28a161b72
commit 4e03ffdb65
1 changed files with 1 additions and 2 deletions
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src/rustc/middle/trans/build.rs
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@ -433,8 +433,7 @@ fn GEP(cx: block, Pointer: ValueRef, Indices: ~[ValueRef]) -> ValueRef {
//
// XXX: Use a small-vector optimization to avoid allocations here.
fn GEPi(cx: block, base: ValueRef, ixs: &[uint]) -> ValueRef {
let mut v: ~[ValueRef] = ~[];
for vec::each(ixs) |i| { v.push(C_i32(*i as i32)); }
let v = do vec::map(ixs) |i| { C_i32(*i as i32) };
count_insn(cx, "gepi");
return InBoundsGEP(cx, base, v);
}