From c8b6e407baa30b41693301fcbf0a17bd3432619b Mon Sep 17 00:00:00 2001
From: Frank Denis <github@pureftpd.org>
Date: Wed, 11 Nov 2020 17:07:56 +0100
Subject: [PATCH] Enable loop interleaving when unrolling is enabled

This mimics clang's default behavior.
---
 src/zig_llvm.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/zig_llvm.cpp b/src/zig_llvm.cpp
index 1a81cf33ef..73864569bb 100644
--- a/src/zig_llvm.cpp
+++ b/src/zig_llvm.cpp
@@ -221,6 +221,7 @@ bool ZigLLVMTargetMachineEmitToFile(LLVMTargetMachineRef targ_machine_ref, LLVMM
     PMBuilder->DisableUnrollLoops = is_debug;
     PMBuilder->SLPVectorize = !is_debug;
     PMBuilder->LoopVectorize = !is_debug;
+    PMBuilder->LoopsInterleaved = !PMBuilder->DisableUnrollLoops;
     PMBuilder->RerollLoops = !is_debug;
     // Leaving NewGVN as default (off) because when on it caused issue #673
     //PMBuilder->NewGVN = !is_debug;