From: Andreas Beckmann <anbe@debian.org>
Date: Wed, 27 Jan 2021 20:26:51 +0000 (+0100)
Subject: [PATCH 099/144] restore setting unroll-threshold on LLVM 9
X-Git-Tag: archive/raspbian/1.8-3+rpi1^2~45
X-Git-Url: https://dgit.raspbian.org/%22http://www.example.com/cgi/%22/%22http:/www.example.com/cgi/%22?a=commitdiff_plain;h=bfb0f91691bdb79c8b9f65350119b81d7d464866;p=pocl.git

[PATCH 099/144] restore setting unroll-threshold on LLVM 9

otherwise kernel/test_rotate hangs on avx512 capable cpus

all other llvm releases work fine without this setting

(this partially reverts 459d0bb5241a62af3b5b607a65dcf5e9a34a01ee)

fixes: #915

Gbp-Pq: Name 0099-restore-setting-unroll-threshold-on-LLVM-9.patch
---

diff --git a/lib/CL/pocl_llvm_utils.cc b/lib/CL/pocl_llvm_utils.cc
index 675094d..bcbf2e4 100644
--- a/lib/CL/pocl_llvm_utils.cc
+++ b/lib/CL/pocl_llvm_utils.cc
@@ -344,6 +344,11 @@ void InitializeLLVM() {
       assert(O && "could not find LLVM option 'debug'");
       O->addOccurrence(1, StringRef("debug"), StringRef("true"), false);
     }
+#if LLVM_MAJOR == 9
+    O = opts["unroll-threshold"];
+    assert(O && "could not find LLVM option 'unroll-threshold'");
+    O->addOccurrence(1, StringRef("unroll-threshold"), StringRef("1"), false);
+#endif
   }
 }