Fixes for building against LLVM 13

Signed-off-by: Stephen Gallagher <sgallagh@redhat.com>

gallium-llvm13.patch

@@ -0,0 +1,113 @@
+From c1b4c64a28d9fc093229eab91a3a7fc4cb4fe29a Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Kai=20Wasserb=C3=A4ch?= <kai@dev.carbon-project.org>
+Date: Thu, 22 Jul 2021 07:34:09 +0200
+Subject: [PATCH 1/2] gallivm: add new wrapper around
+ Module::setOverrideStackAlignment()
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+We need it in the next commit to replace setting the stack alignment on
+i386 with LLVM >= 13 through the TargetOption::StackAlignmentOverride,
+which was removed in the upstream commit
+<https://github.com/llvm/llvm-project/commit/3787ee457173c3612aac4c9b1a2b6d6ab0202616>.
+
+Unfortunately Module::setOverrideStackAlignment() is not available
+through the C API and we need to wrap it ourselves.
+
+Signed-off-by: Kai Wasserbäch <kai@dev.carbon-project.org>
+Reference: mesa/mesa#4906
+Reviewed-by: Roland Scheidegger <sroland@vmware.com>
+Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11940>
+---
+ src/gallium/auxiliary/gallivm/lp_bld_misc.cpp | 9 +++++++++
+ src/gallium/auxiliary/gallivm/lp_bld_misc.h   | 3 +++
+ 2 files changed, 12 insertions(+)
+
+diff --git a/src/gallium/auxiliary/gallivm/lp_bld_misc.cpp b/src/gallium/auxiliary/gallivm/lp_bld_misc.cpp
+index 44d07fe69c6..5f52ed08fae 100644
+--- a/src/gallium/auxiliary/gallivm/lp_bld_misc.cpp
++++ b/src/gallium/auxiliary/gallivm/lp_bld_misc.cpp
+@@ -615,3 +615,12 @@ lp_is_function(LLVMValueRef v)
+ {
+ 	return LLVMGetValueKind(v) == LLVMFunctionValueKind;
+ }
++
++extern "C" void
++lp_set_module_stack_alignment_override(LLVMModuleRef MRef, unsigned align)
++{
++#if LLVM_VERSION_MAJOR >= 13
++   llvm::Module *M = llvm::unwrap(MRef);
++   M->setOverrideStackAlignment(align);
++#endif
++}
+diff --git a/src/gallium/auxiliary/gallivm/lp_bld_misc.h b/src/gallium/auxiliary/gallivm/lp_bld_misc.h
+index f2a15f19e47..fa0ce90162e 100644
+--- a/src/gallium/auxiliary/gallivm/lp_bld_misc.h
++++ b/src/gallium/auxiliary/gallivm/lp_bld_misc.h
+@@ -91,6 +91,9 @@ lp_is_function(LLVMValueRef v);
+ 
+ void
+ lp_free_objcache(void *objcache);
++
++void
++lp_set_module_stack_alignment_override(LLVMModuleRef M, unsigned align);
+ #ifdef __cplusplus
+ }
+ #endif
+-- 
+GitLab
+
+
+From 3a2d317b996f57647da23de7876142be4b9b71f3 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Kai=20Wasserb=C3=A4ch?= <kai@dev.carbon-project.org>
+Date: Thu, 22 Jul 2021 07:42:12 +0200
+Subject: [PATCH 2/2] gallivm: fix FTBFS on i386 with LLVM >= 13,
+ StackAlignmentOverride is gone
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Use the newly added wrapper lp_set_module_stack_alignment_override() to
+achieve the same end result.
+
+Signed-off-by: Kai Wasserbäch <kai@dev.carbon-project.org>
+Closes: mesa/mesa#4906
+Reviewed-by: Roland Scheidegger <sroland@vmware.com>
+Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11940>
+---
+ src/gallium/auxiliary/gallivm/lp_bld_init.c   | 4 ++++
+ src/gallium/auxiliary/gallivm/lp_bld_misc.cpp | 2 +-
+ 2 files changed, 5 insertions(+), 1 deletion(-)
+
+diff --git a/src/gallium/auxiliary/gallivm/lp_bld_init.c b/src/gallium/auxiliary/gallivm/lp_bld_init.c
+index 8e5fe6f24dc..d2d049ace5e 100644
+--- a/src/gallium/auxiliary/gallivm/lp_bld_init.c
++++ b/src/gallium/auxiliary/gallivm/lp_bld_init.c
+@@ -347,6 +347,10 @@ init_gallivm_state(struct gallivm_state *gallivm, const char *name,
+    if (!gallivm->module)
+       goto fail;
+ 
++#if defined(PIPE_ARCH_X86)
++   lp_set_module_stack_alignment_override(gallivm->module, 4);
++#endif
++
+    gallivm->builder = LLVMCreateBuilderInContext(gallivm->context);
+    if (!gallivm->builder)
+       goto fail;
+diff --git a/src/gallium/auxiliary/gallivm/lp_bld_misc.cpp b/src/gallium/auxiliary/gallivm/lp_bld_misc.cpp
+index 5f52ed08fae..be288ab02e2 100644
+--- a/src/gallium/auxiliary/gallivm/lp_bld_misc.cpp
++++ b/src/gallium/auxiliary/gallivm/lp_bld_misc.cpp
+@@ -350,7 +350,7 @@ lp_build_create_jit_compiler_for_module(LLVMExecutionEngineRef *OutJIT,
+     * friends for configuring code generation options, like stack alignment.
+     */
+    TargetOptions options;
+-#if defined(PIPE_ARCH_X86)
++#if defined(PIPE_ARCH_X86) && LLVM_VERSION_MAJOR < 13
+    options.StackAlignmentOverride = 4;
+ #endif
+ 
+-- 
+GitLab
+

mesa.spec

@@ -59,7 +59,7 @@ Name:           mesa
 Summary:        Mesa graphics libraries
 %global ver 21.2.0
 Version:        %{lua:ver = string.gsub(rpm.expand("%{ver}"), "-", "~"); print(ver)}
-Release:        2%{?dist}
+Release:        3%{?dist}
 License:        MIT
 URL:            http://www.mesa3d.org
 
@@ -69,6 +69,11 @@ Source0:        https://mesa.freedesktop.org/archive/%{name}-%{ver}.tar.xz
 # Fedora opts to ignore the optional part of clause 2 and treat that code as 2 clause BSD.
 Source1:        Mesa-MLAA-License-Clarification-Email.txt
 
+
+# Backport of upstream patches from
+# https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11940
+Patch0001: gallium-llvm13.patch
+
 BuildRequires:  meson >= 0.45
 BuildRequires:  gcc
 BuildRequires:  gcc-c++
@@ -606,6 +611,9 @@ popd
 %files vulkan-devel
 
 %changelog
+* Thu Aug 19 2021 Stephen Gallagher <sgallagh@redhat.com> - 21.2.0-3
+- Fixes for building against LLVM 13
+
 * Thu Aug 05 2021 ValdikSS <iam@valdikss.org.ru> - 21.2.0-2
 - Enable Crocus driver