From 8880d9641dab4e6c19861acfc5821b2d21b52275 Mon Sep 17 00:00:00 2001
From: Tim Besard <tim.besard@gmail.com>
Date: Fri, 10 Mar 2017 15:08:12 +0100
Subject: [PATCH] Use proper alignment when copying data to a variable.

Using align=1 is very expensive on hardware without unaligned ld/st (eg. GPUs).
---
 src/codegen.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/codegen.cpp b/src/codegen.cpp
index d79efe233dc48..0a270f14dcf3d 100644
--- a/src/codegen.cpp
+++ b/src/codegen.cpp
@@ -3850,7 +3850,7 @@ static void emit_assignment(jl_value_t *l, jl_value_t *r, jl_codectx_t *ctx)
                     builder.CreateMemCpy(vi.value.V,
                                          data_pointer(rval_info, ctx, T_pint8),
                                          copy_bytes,
-                                         /*TODO: min_align*/1,
+                                         ((jl_datatype_t*)rval_info.typ)->layout->alignment,
                                          vi.isVolatile,
                                          tbaa);
                 }