[cfe-commits] r80655 - in /cfe/trunk: lib/CodeGen/CGBuiltin.cpp test/CodeGen/builtins.c

[Eli Friedman]

Author: efriedma
Date: Mon Aug 31 23:19:44 2009
New Revision: 80655

URL: http://llvm.org/viewvc/llvm-project?rev=80655&view=rev
Log:
PR4836, part 2: CodeGen for __builtin_isnan.


Modified:
    cfe/trunk/lib/CodeGen/CGBuiltin.cpp
    cfe/trunk/test/CodeGen/builtins.c

Modified: cfe/trunk/lib/CodeGen/CGBuiltin.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGBuiltin.cpp?rev=80655&r1=80654&r2=80655&view=diff

==============================================================================
--- cfe/trunk/lib/CodeGen/CGBuiltin.cpp (original)
+++ cfe/trunk/lib/CodeGen/CGBuiltin.cpp Mon Aug 31 23:19:44 2009
@@ -271,6 +271,11 @@
     return RValue::get(Builder.CreateZExt(LHS, ConvertType(E->getType()),
                                           "tmp"));
   }
+  case Builtin::BI__builtin_isnan: {
+    Value *V = EmitScalarExpr(E->getArg(0));
+    V = Builder.CreateFCmpUNO(V, V, "cmp");
+    return RValue::get(Builder.CreateZExt(V, ConvertType(E->getType()), "tmp"));
+  }
   case Builtin::BIalloca:
   case Builtin::BI__builtin_alloca: {
     // FIXME: LLVM IR Should allow alloca with an i64 size!

Modified: cfe/trunk/test/CodeGen/builtins.c
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGen/builtins.c?rev=80655&r1=80654&r2=80655&view=diff

==============================================================================
--- cfe/trunk/test/CodeGen/builtins.c (original)
+++ cfe/trunk/test/CodeGen/builtins.c Mon Aug 31 23:19:44 2009
@@ -54,6 +54,8 @@
   P(islessgreater, (1., 2.));
   P(isunordered, (1., 2.));
 
+  P(isnan, (1.));
+
   // Bitwise & Numeric Functions
 
   P(abs, (N));