add range assert when loading bools

Author: thestinger

src/librustc/middle/trans/build.rs

@@ -16,6 +16,7 @@ use lib::llvm::{Opcode, IntPredicate, RealPredicate, True, False};
 use lib::llvm::{ValueRef, TypeRef, BasicBlockRef, BuilderRef, ModuleRef};
 use libc::{c_uint, c_int, c_ulonglong};
 use middle::trans::common::*;
+use middle::trans::machine::llsize_of_real;
 
 use core::cast::transmute;
 use core::cast;
@@ -540,13 +541,11 @@ pub fn LoadRangeAssert(cx: block, PointerVal: ValueRef, lo: c_ulonglong,
                        hi: c_ulonglong, signed: lib::llvm::Bool) -> ValueRef {
     let value = Load(cx, PointerVal);
 
-    let ccx = cx.fcx.ccx;
-    let ty = val_ty(PointerVal);
     unsafe {
-        assert llvm::LLVMGetTypeKind(ty) != lib::llvm::Array;
+        let t = llvm::LLVMGetElementType(llvm::LLVMTypeOf(PointerVal));
+        let min = llvm::LLVMConstInt(t, lo, signed);
+        let max = llvm::LLVMConstInt(t, hi, signed);
 
-        let min = llvm::LLVMConstInt(ccx.int_type, lo, signed);
-        let max = llvm::LLVMConstInt(ccx.int_type, hi, signed);
 
         do vec::as_imm_buf([min, max]) |ptr, len| {
             llvm::LLVMSetMetadata(value, lib::llvm::MD_range as c_uint,

src/librustc/middle/trans/datum.rs

@@ -431,7 +431,13 @@ pub impl Datum {
         } else {
             match self.mode {
                 ByValue => self.val,
-                ByRef => Load(bcx, self.val)
+                ByRef => {
+                    if ty::type_is_bool(self.ty) {
+                        LoadRangeAssert(bcx, self.val, 0, 2, lib::llvm::True)
+                    } else {
+                        Load(bcx, self.val)
+                    }
+                }
             }
         }
     }