force size of alloca to i32, which is currently required by LLVM IR.
This fixes use of alloca on 64-bit systems.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@52334 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGBuiltin.cpp b/lib/CodeGen/CGBuiltin.cpp
index 51d7ced..f8132f4 100644
--- a/lib/CodeGen/CGBuiltin.cpp
+++ b/lib/CodeGen/CGBuiltin.cpp
@@ -261,10 +261,13 @@
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)),