MIR: Make Mir take ownership of InlineAsm values.

src/librustc/mir/repr.rs

@@ -584,7 +584,7 @@ pub enum Rvalue<'tcx> {
         from_end: usize,
     },
 
-    InlineAsm(&'tcx InlineAsm),
+    InlineAsm(InlineAsm),
 }
 
 #[derive(Clone, Debug, PartialEq, Eq)]

src/librustc_mir/build/expr/as_rvalue.rs

@@ -40,7 +40,7 @@ fn expr_as_rvalue(&mut self,
                 this.in_scope(extent, block, |this| this.as_rvalue(block, value))
             }
             ExprKind::InlineAsm { asm } => {
-                block.and(Rvalue::InlineAsm(asm))
+                block.and(Rvalue::InlineAsm(asm.clone()))
             }
             ExprKind::Repeat { value, count } => {
                 let value_operand = unpack!(block = this.as_operand(block, value));

src/librustc_trans/trans/mir/rvalue.rs

@@ -120,7 +120,7 @@ pub fn trans_rvalue(&mut self,
                 bcx
             }
 
-            mir::Rvalue::InlineAsm(inline_asm) => {
+            mir::Rvalue::InlineAsm(ref inline_asm) => {
                 asm::trans_inline_asm(bcx, inline_asm)
             }