From 29c76db65ca8e017723332c8cb12e14e2d5c1a33 Mon Sep 17 00:00:00 2001
From: Keno Fischer <keno@juliacomputing.com>
Date: Tue, 16 Aug 2022 17:29:52 -0400
Subject: [PATCH] Properly declare alloca alignment (#46368)

Turns out when you declare an alloca alignment, it also rounds up
the allocated size. Replaces #46322 and #46260 and fixes the
same issue.

(cherry picked from commit e358a17aa806541b23842fd0ef06bacf50491b75)
---
 src/codegen.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/codegen.cpp b/src/codegen.cpp
index cfd0e7154ce68..79b40513f453c 100644
--- a/src/codegen.cpp
+++ b/src/codegen.cpp
@@ -6709,7 +6709,7 @@ static std::pair<std::unique_ptr<Module>, jl_llvm_functions_t>
             Type *vtype = julia_type_to_llvm(ctx, jt, &isboxed);
             assert(!isboxed);
             assert(!type_is_ghost(vtype) && "constants should already be handled");
-            Value *lv = new AllocaInst(vtype, 0, jl_symbol_name(s), /*InsertBefore*/ctx.pgcstack);
+            Value *lv = new AllocaInst(vtype, 0, NULL, Align(jl_datatype_align(jt)), jl_symbol_name(s), /*InsertBefore*/ctx.pgcstack);
             if (CountTrackedPointers(vtype).count) {
                 StoreInst *SI = new StoreInst(Constant::getNullValue(vtype), lv, false, Align(sizeof(void*)));
                 SI->insertAfter(ctx.pgcstack);