[cfe-commits] r94320 - in /cfe/trunk: include/clang/Basic/Builtins.def lib/CodeGen/CGBuiltin.cpp

[Eli Friedman]

Author: efriedma
Date: Sat Jan 23 13:00:10 2010
New Revision: 94320

URL: http://llvm.org/viewvc/llvm-project?rev=94320&view=rev
Log:
Add bzero builtin; this should help codegen quality for code using this
function.


Modified:
    cfe/trunk/include/clang/Basic/Builtins.def
    cfe/trunk/lib/CodeGen/CGBuiltin.cpp

Modified: cfe/trunk/include/clang/Basic/Builtins.def
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Basic/Builtins.def?rev=94320&r1=94319&r2=94320&view=diff

==============================================================================
--- cfe/trunk/include/clang/Basic/Builtins.def (original)
+++ cfe/trunk/include/clang/Basic/Builtins.def Sat Jan 23 13:00:10 2010
@@ -277,7 +277,7 @@
 BUILTIN(__builtin_stdarg_start, "vA.", "n")
 BUILTIN(__builtin_bcmp, "iv*v*z", "n")
 BUILTIN(__builtin_bcopy, "vv*v*z", "n")
-BUILTIN(__builtin_bzero, "vv*z", "n")
+BUILTIN(__builtin_bzero, "vv*z", "nF")
 BUILTIN(__builtin_memchr, "v*vC*iz", "nF")
 BUILTIN(__builtin_memcmp, "ivC*vC*z", "nF")
 BUILTIN(__builtin_memcpy, "v*v*vC*z", "nF")
@@ -527,6 +527,7 @@
 // POSIX strings.h
 LIBBUILTIN(index, "c*cC*i",       "f",     "strings.h")
 LIBBUILTIN(rindex, "c*cC*i",      "f",     "strings.h")
+LIBBUILTIN(bzero, "vv*z",         "f",     "strings.h")
 // POSIX unistd.h
 LIBBUILTIN(_exit, "vi",           "fr",    "unistd.h")
 // POSIX setjmp.h

Modified: cfe/trunk/lib/CodeGen/CGBuiltin.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGBuiltin.cpp?rev=94320&r1=94319&r2=94320&view=diff

==============================================================================
--- cfe/trunk/lib/CodeGen/CGBuiltin.cpp (original)
+++ cfe/trunk/lib/CodeGen/CGBuiltin.cpp Sat Jan 23 13:00:10 2010
@@ -304,6 +304,7 @@
     Size = Builder.CreateIntCast(Size, llvm::Type::getInt32Ty(VMContext), false, "tmp");
     return RValue::get(Builder.CreateAlloca(llvm::Type::getInt8Ty(VMContext), Size, "tmp"));
   }
+  case Builtin::BIbzero:
   case Builtin::BI__builtin_bzero: {
     Value *Address = EmitScalarExpr(E->getArg(0));
     Builder.CreateCall4(CGM.getMemSetFn(), Address,