Parse inline assembly.

Author: luqmana

src/etc/vim/syntax/rust.vim

@@ -11,7 +11,7 @@ elseif exists("b:current_syntax")
 endif
 
 syn match     rustAssert      "\<assert\(\w\)*"
-syn keyword   rustKeyword     as break
+syn keyword   rustKeyword     __asm__ as break
 syn keyword   rustKeyword     copy do drop else extern
 syn keyword   rustKeyword     for if impl let log
 syn keyword   rustKeyword     loop match mod once priv pub pure

src/librustc/lib/llvm.rs

@@ -1433,6 +1433,11 @@ pub mod llvm {
 
         /** Enables LLVM debug output. */
         pub unsafe fn LLVMSetDebug(Enabled: c_int);
+
+        /** Prepares inline assembly. */
+        pub unsafe fn LLVMInlineAsm(Ty: TypeRef, AsmString: *c_char,
+                                    Constraints: *c_char, SideEffects: Bool,
+                                    AlignStack: Bool) -> ValueRef;
     }
 }
 

src/librustc/middle/liveness.rs

@@ -620,7 +620,8 @@ fn visit_expr(expr: @expr, &&self: @mut IrMaps, vt: vt<@mut IrMaps>) {
       expr_do_body(*) | expr_cast(*) | expr_unary(*) | expr_break(_) |
       expr_again(_) | expr_lit(_) | expr_ret(*) | expr_block(*) |
       expr_assign(*) | expr_swap(*) | expr_assign_op(*) | expr_mac(*) |
-      expr_struct(*) | expr_repeat(*) | expr_paren(*) => {
+      expr_struct(*) | expr_repeat(*) | expr_paren(*) |
+      expr_inline_asm(*) => {
           visit::visit_expr(expr, self, vt);
       }
     }
@@ -1345,6 +1346,7 @@ pub impl Liveness {
             self.propagate_through_expr(e, succ)
           }
 
+          expr_inline_asm(*) |
           expr_lit(*) => {
             succ
           }
@@ -1618,7 +1620,7 @@ fn check_expr(expr: @expr, &&self: @Liveness, vt: vt<@Liveness>) {
       expr_cast(*) | expr_unary(*) | expr_ret(*) | expr_break(*) |
       expr_again(*) | expr_lit(_) | expr_block(*) | expr_swap(*) |
       expr_mac(*) | expr_addr_of(*) | expr_struct(*) | expr_repeat(*) |
-      expr_paren(*) => {
+      expr_paren(*) | expr_inline_asm(*) => {
         visit::visit_expr(expr, self, vt);
       }
     }

src/librustc/middle/mem_categorization.rs

@@ -447,7 +447,7 @@ pub impl mem_categorization_ctxt {
           ast::expr_while(*) | ast::expr_block(*) | ast::expr_loop(*) |
           ast::expr_match(*) | ast::expr_lit(*) | ast::expr_break(*) |
           ast::expr_mac(*) | ast::expr_again(*) | ast::expr_struct(*) |
-          ast::expr_repeat(*) => {
+          ast::expr_repeat(*) | ast::expr_inline_asm(*) => {
             return self.cat_rvalue(expr, expr_ty);
           }
         }

src/librustc/middle/moves.rs

@@ -560,7 +560,8 @@ pub impl VisitContext {
 
             expr_break(*) |
             expr_again(*) |
-            expr_lit(*) => {}
+            expr_lit(*)   |
+            expr_inline_asm(*) => {}
 
             expr_loop(ref blk, _) => {
                 self.consume_block(blk, visitor);

src/librustc/middle/trans/build.rs

@@ -18,7 +18,7 @@ use syntax::codemap::span;
 
 use core::prelude::*;
 use core::cast;
-use core::libc::{c_uint, c_int, c_ulonglong};
+use core::libc::{c_uint, c_int, c_ulonglong, c_char};
 use core::libc;
 use core::option::Some;
 use core::ptr;
@@ -872,6 +872,17 @@ pub fn add_comment(bcx: block, text: &str) {
     }
 }
 
+pub fn InlineAsmCall(cx: block, asm: *c_char, cons: *c_char) -> ValueRef {
+    unsafe {
+        count_insn(cx, "inlineasm");
+
+        let llfty = T_fn(~[], T_void());
+        let v = llvm::LLVMInlineAsm(llfty, asm, cons, False, False);
+
+        Call(cx, v, ~[])
+    }
+}
+
 pub fn Call(cx: block, Fn: ValueRef, Args: &[ValueRef]) -> ValueRef {
     if cx.unreachable { return _UndefReturn(cx, Fn); }
     unsafe {

src/librustc/middle/trans/expr.rs

@@ -691,6 +691,14 @@ fn trans_rvalue_dps_unadjusted(bcx: block, expr: @ast::expr,
         ast::expr_assign_op(op, dst, src) => {
             return trans_assign_op(bcx, expr, op, dst, src);
         }
+        ast::expr_inline_asm(asm, cons) => {
+            do str::as_c_str(*asm) |a| {
+                do str::as_c_str(*cons) |c| {
+                    InlineAsmCall(bcx, a, c);
+                }
+            }
+            return bcx;
+        }
         _ => {
             bcx.tcx().sess.span_bug(
                 expr.span,

src/librustc/middle/trans/type_use.rs

@@ -353,7 +353,7 @@ pub fn mark_for_expr(cx: Context, e: @expr) {
       expr_match(*) | expr_block(_) | expr_if(*) | expr_while(*) |
       expr_break(_) | expr_again(_) | expr_unary(_, _) | expr_lit(_) |
       expr_mac(_) | expr_addr_of(_, _) | expr_ret(_) | expr_loop(_, _) |
-      expr_loop_body(_) | expr_do_body(_) => ()
+      expr_loop_body(_) | expr_do_body(_) | expr_inline_asm(*) => ()
     }
 }
 

src/librustc/middle/ty.rs

@@ -3076,6 +3076,7 @@ pub fn expr_kind(tcx: ctxt,
         ast::expr_block(*) |
         ast::expr_copy(*) |
         ast::expr_repeat(*) |
+        ast::expr_inline_asm(*) |
         ast::expr_lit(@codemap::spanned {node: lit_str(_), _}) |
         ast::expr_vstore(_, ast::expr_vstore_slice) |
         ast::expr_vstore(_, ast::expr_vstore_mut_slice) |

src/librustc/middle/typeck/check/mod.rs

@@ -2303,6 +2303,7 @@ pub fn check_expr_with_unifier(fcx: @mut FnCtxt,
         let region_lb = ty::re_scope(expr.id);
         instantiate_path(fcx, pth, tpt, expr.span, expr.id, region_lb);
       }
+      ast::expr_inline_asm(*) => { fcx.write_nil(id); }
       ast::expr_mac(_) => tcx.sess.bug(~"unexpanded macro"),
       ast::expr_break(_) => { fcx.write_bot(id); bot = true; }
       ast::expr_again(_) => { fcx.write_bot(id); bot = true; }