diff options
Diffstat (limited to 'lib/CodeGen/CGBuiltin.cpp')
| -rw-r--r-- | lib/CodeGen/CGBuiltin.cpp | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/lib/CodeGen/CGBuiltin.cpp b/lib/CodeGen/CGBuiltin.cpp index 51d7ced2d8..f8132f417d 100644 --- a/lib/CodeGen/CGBuiltin.cpp +++ b/lib/CodeGen/CGBuiltin.cpp @@ -261,10 +261,13 @@ RValue CodeGenFunction::EmitBuiltinExpr(unsigned BuiltinID, const CallExpr *E) { return RValue::get(Builder.CreateZExt(LHS, ConvertType(E->getType()), "tmp")); } - case Builtin::BI__builtin_alloca: - return RValue::get(Builder.CreateAlloca(llvm::Type::Int8Ty, - EmitScalarExpr(E->getArg(0)), + case Builtin::BI__builtin_alloca: { + // FIXME: LLVM IR Should allow alloca with an i64 size! + Value *Size = EmitScalarExpr(E->getArg(0)); + Size = Builder.CreateIntCast(Size, llvm::Type::Int32Ty, false, "tmp"); + return RValue::get(Builder.CreateAlloca(llvm::Type::Int8Ty, Size, "tmp")); + } case Builtin::BI__builtin_memcpy: { Value* MemCpyOps[4] = { EmitScalarExpr(E->getArg(0)), |