diff options
Diffstat (limited to 'compiler/rustc_codegen_ssa/src')
| -rw-r--r-- | compiler/rustc_codegen_ssa/src/mir/rvalue.rs | 33 |
1 files changed, 18 insertions, 15 deletions
diff --git a/compiler/rustc_codegen_ssa/src/mir/rvalue.rs b/compiler/rustc_codegen_ssa/src/mir/rvalue.rs index 3b62148abb7..8ef25d4e2ff 100644 --- a/compiler/rustc_codegen_ssa/src/mir/rvalue.rs +++ b/compiler/rustc_codegen_ssa/src/mir/rvalue.rs @@ -93,23 +93,26 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> { return; } - if let OperandValue::Immediate(v) = cg_elem.val { - let start = dest.val.llval; - let size = bx.const_usize(dest.layout.size.bytes()); - - // Use llvm.memset.p0i8.* to initialize all zero arrays - if bx.cx().const_to_opt_u128(v, false) == Some(0) { - let fill = bx.cx().const_u8(0); - bx.memset(start, fill, size, dest.val.align, MemFlags::empty()); - return; - } + match cg_elem.val { + OperandValue::Immediate(v) => { + let start = dest.val.llval; + let size = bx.const_usize(dest.layout.size.bytes()); + + // Use llvm.memset.p0i8.* to initialize all zero arrays + if bx.cx().const_to_opt_u128(v, false) == Some(0) { + let fill = bx.cx().const_u8(0); + bx.memset(start, fill, size, dest.val.align, MemFlags::empty()); + return; + } - // Use llvm.memset.p0i8.* to initialize byte arrays - let v = bx.from_immediate(v); - if bx.cx().val_ty(v) == bx.cx().type_i8() { - bx.memset(start, v, size, dest.val.align, MemFlags::empty()); - return; + // Use llvm.memset.p0i8.* to initialize byte arrays + let v = bx.from_immediate(v); + if bx.cx().val_ty(v) == bx.cx().type_i8() { + bx.memset(start, v, size, dest.val.align, MemFlags::empty()); + return; + } } + _ => (), } let count = self |