From 508652fd8b90d7590d7aec2f54fb0cbc12b1c4d9 Mon Sep 17 00:00:00 2001
From: David Nadlinger <code@klickverbot.at>
Date: Fri, 31 Aug 2012 01:11:30 +0200
Subject: [PATCH] Initialization of vector types with single value.

Fixes DMD testcase 'testargtypes'.
---
 gen/llvmhelpers.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/gen/llvmhelpers.cpp b/gen/llvmhelpers.cpp
index 625dbb7a..30279c26 100644
--- a/gen/llvmhelpers.cpp
+++ b/gen/llvmhelpers.cpp
@@ -1501,6 +1501,12 @@ LLConstant* DtoConstExpInit(Loc loc, Type* type, Expression* exp)
             Logger::println("type is a static array, building constant array initializer to single value");
             return expand_to_sarray(base, exp);
         }
+        else if (base->ty == Tvector)
+        {
+            LLConstant* val = exp->toConstElem(gIR);
+            TypeVector* tv = (TypeVector*)base;
+            return llvm::ConstantVector::getSplat(tv->size(loc), val);
+        }
         else
         {
             error("cannot yet convert default initializer %s of type %s to %s", exp->toChars(), exp->type->toChars(), type->toChars());