use the type's alignment for generated memsets

thestinger · thestinger · commit 9ab292130078 · 2013-05-28T18:38:46.000-04:00
diff --git a/src/librustc/middle/trans/base.rs b/src/librustc/middle/trans/base.rs
@@ -1506,7 +1506,7 @@ pub fn memzero(cx: block, llptr: ValueRef, llty: TypeRef) {
     let llptr = PointerCast(cx, llptr, T_ptr(T_i8()));
     let llzeroval = C_u8(0);
     let size = IntCast(cx, machine::llsize_of(ccx, llty), ccx.int_type);
-    let align = C_i32(1i32);
+    let align = C_i32(llalign_of_min(ccx, llty) as i32);
     let volatile = C_i1(false);
     Call(cx, llintrinsicfn, [llptr, llzeroval, size, align, volatile]);
 }

Original file line number	Diff line number	Diff line change
`@@ -1506,7 +1506,7 @@ pub fn memzero(cx: block, llptr: ValueRef, llty: TypeRef) {`
`1506`	`1506`	`let llptr = PointerCast(cx, llptr, T_ptr(T_i8()));`
`1507`	`1507`	`let llzeroval = C_u8(0);`
`1508`	`1508`	`let size = IntCast(cx, machine::llsize_of(ccx, llty), ccx.int_type);`
`1509`		`- let align = C_i32(1i32);`
	`1509`	`+ let align = C_i32(llalign_of_min(ccx, llty) as i32);`
`1510`	`1510`	`let volatile = C_i1(false);`
`1511`	`1511`	`Call(cx, llintrinsicfn, [llptr, llzeroval, size, align, volatile]);`
`1512`	`1512`	`}`