[llvm-commits] [llvm-gcc-4.2] r53131 - /llvm-gcc-4.2/trunk/gcc/llvm-convert.cpp

[Devang Patel]

Author: dpatel
Date: Thu Jul  3 19:46:39 2008
New Revision: 53131

URL: http://llvm.org/viewvc/llvm-project?rev=53131&view=rev
Log:
Expand BUILT_IN_OBJECT_SIZE.

Modified:
    llvm-gcc-4.2/trunk/gcc/llvm-convert.cpp

Modified: llvm-gcc-4.2/trunk/gcc/llvm-convert.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm-gcc-4.2/trunk/gcc/llvm-convert.cpp?rev=53131&r1=53130&r2=53131&view=diff

==============================================================================
--- llvm-gcc-4.2/trunk/gcc/llvm-convert.cpp (original)
+++ llvm-gcc-4.2/trunk/gcc/llvm-convert.cpp Thu Jul  3 19:46:39 2008
@@ -4334,6 +4334,27 @@
   case BUILT_IN_UNWIND_INIT:
     return EmitBuiltinUnwindInit(exp, Result);
 
+  case BUILT_IN_OBJECT_SIZE: {
+    tree ArgList = TREE_OPERAND (exp, 1);
+    if (!validate_arglist(ArgList, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE)) {
+      error("Invalid builtin_object_size argument types");
+      return false;
+    }
+    tree ObjSizeTree = TREE_VALUE (TREE_CHAIN (ArgList));
+    STRIP_NOPS (ObjSizeTree);
+    if (TREE_CODE (ObjSizeTree) != INTEGER_CST
+        || tree_int_cst_sgn (ObjSizeTree) < 0
+        || compare_tree_int (ObjSizeTree, 3) > 0) {
+      error("Invalid second builtin_object_size argument");
+      return false;
+    }
+
+    if (tree_low_cst (ObjSizeTree, 0) < 2)
+      Result = ConstantInt::get(Type::Int32Ty, 0);
+    else
+      Result = ConstantInt::getAllOnesValue(Type::Int32Ty);
+    return true;
+  }
   // Unary bit counting intrinsics.
   // NOTE: do not merge these case statements.  That will cause the memoized 
   // Function* to be incorrectly shared across the different typed functions.