Fix broken CI

Backport a few fixes from rawhide concerning tests setup and CI integration.

0001-Normalize-working-directory-when-running-llvm-mc-in-.patch

@@ -0,0 +1,26 @@
+From bab5908df544680ada0a3cf431f55aeccfbdb321 Mon Sep 17 00:00:00 2001
+From: serge-sans-paille <sguelton@redhat.com>
+Date: Mon, 13 Apr 2020 13:44:15 +0200
+Subject: [PATCH] Normalize working directory when running llvm-mc in test
+
+Otherwise, depending on the lit location used to run the test, llvm-mc adds an
+include_directories entry in the dwarf output, which breaks tests in some setup.
+
+Differential Revision: https://reviews.llvm.org/D77876
+---
+ llvm/test/MC/MachO/gen-dwarf.s | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/llvm/test/MC/MachO/gen-dwarf.s b/llvm/test/MC/MachO/gen-dwarf.s
+index 0813856d625..6d39d278e81 100644
+--- a/llvm/test/MC/MachO/gen-dwarf.s
++++ b/llvm/test/MC/MachO/gen-dwarf.s
+@@ -1,4 +1,4 @@
+-// RUN: llvm-mc -g -triple i386-apple-darwin10 %s -filetype=obj -o %t
++// RUN: mkdir -p %t0 && cd %t0 && llvm-mc -g -triple i386-apple-darwin10 %s -filetype=obj -o %t
+ // RUN: llvm-dwarfdump -all %t | FileCheck %s
+ 
+ .globl _bar
+-- 
+2.25.2
+

lit.fedora.cfg.py

@@ -1,5 +1,6 @@
 
 config.llvm_tools_dir = '/usr/bin'
+config.llvm_src_root = '/usr/share/llvm/src'
 config.llvm_shlib_dir = '%(llvm_shlib_dir)s' % lit_config.params
 
 if hasattr(config, 'host_triple'):

llvm.spec

@@ -65,6 +65,8 @@ Patch1:		0001-CMake-Split-test-binary-exports-into-their-own-expor.patch
 # https://bugzilla.redhat.com/show_bug.cgi?id=1862012
 Patch2: 0001-PowerPC-PPCBoolRetToInt-Don-t-translate-Constant-s-o.patch
 
+Patch4:		0001-Normalize-working-directory-when-running-llvm-mc-in-.patch
+
 BuildRequires:	gcc
 BuildRequires:	gcc-c++
 BuildRequires:	cmake
@@ -296,10 +298,21 @@ install -d %{install_srcdir}
 install -d %{install_srcdir}/utils/
 cp -R utils/unittest %{install_srcdir}/utils/
 
-# Generate lit config files.  Strip off the last line that initiates the
+# Clang needs these for running lit tests.
+for f in utils/*.py; do
+	sed '1 s|^.*$|#!/usr/bin/env python3|' $f > %{install_srcdir}/$f
+done
+cp -R utils/UpdateTestChecks %{install_srcdir}/utils/
+
+
+# One of the lit tests references this file
+install -d %{install_srcdir}/docs/CommandGuide/
+install -m 0644 docs/CommandGuide/dsymutil.rst %{install_srcdir}/docs/CommandGuide/
+
+# Generate lit config files.  Strip off the last lines that initiates the
 # test run, so we can customize the configuration.
-head -n -1 _build/test/lit.site.cfg.py >> %{lit_cfg}
-head -n -1 _build/test/Unit/lit.site.cfg.py >> %{lit_unit_cfg}
+head -n -2 _build/test/lit.site.cfg.py >> %{lit_cfg}
+head -n -2 _build/test/Unit/lit.site.cfg.py >> %{lit_unit_cfg}
 
 # Install custom fedora config file
 cp %{SOURCE2} %{buildroot}%{lit_fedora_cfg}
@@ -472,6 +485,7 @@ fi
 %{_datadir}/llvm/src/unittests
 %{_datadir}/llvm/src/test.tar.gz
 %{_datadir}/llvm/lit.fedora.cfg.py
+%{_datadir}/llvm/src/docs/CommandGuide/dsymutil.rst
 %{_bindir}/not
 %{_bindir}/count
 %{_bindir}/yaml-bench

run-lit-tests

@@ -48,6 +48,7 @@ esac
 
 cd $(mktemp -d)
 ln -s /usr/include include
+ln -s /usr/share/llvm/src/docs docs
 tar -xzf /usr/share/llvm/src/test.tar.gz
 ln -s $ARCH.site.cfg.py test/lit.site.cfg.py
 ln -s $ARCH.site.cfg.py test/Unit/lit.site.cfg.py

tests/libllvm-size/runtest.sh

@@ -0,0 +1,5 @@
+#!/bin/bash
+
+set -ex
+
+test `stat -L -c %s /usr/lib64/libLLVM.so` -lt 100000000

tests/regression-tests/runtest.sh

@@ -0,0 +1,16 @@
+#!/bin/bash
+
+set -ex
+
+cmd='/usr/libexec/tests/llvm/run-lit-tests --threads 1'
+if [ `id -u` -eq 0 ]; then
+  # lit tests can't be run as root, so we need to run as a different user
+  user='llvm-regression-tests'
+  if ! id -u $user; then
+    useradd $user
+  fi
+  su $user -c "$cmd"
+  cmd="su $user -c $cmd"
+else
+  exec $cmd
+fi

tests/tests.yml

@@ -8,9 +8,7 @@
       - rust
       - cargo
     tests:
-      - regression-tests:
-          dir: ./
-          run: /usr/libexec/tests/llvm/run-lit-tests --threads 1
+      - regression-tests
       - rust-sanity:
           dir: ./
           run: cargo new hello && cd hello && cargo run
@@ -20,9 +18,7 @@
       # which breaks the nightly compose.  So this test checks that libLLVM.so
       # is less than 100MB to ensure it was successfully stripped.
       # https://bugzilla.redhat.com/show_bug.cgi?id=1793250
-      - libllvm-size:
-        dir: ./
-        run: test `stat -L -c %s /usr/lib64/libLLVM.so` -lt 100000000
+      - libllvm-size
       # This test ensures that the spec file still builds correctly with
       # %global compat_build 1
       # FIXME: This fails, because the CI system has a hard-coded timeout of 4