mesa package update

Signed-off-by: guibuilder_pel7x64builder0 <guibuilder@powerel.org>

SOURCES/0001-llvmpipe-use-ppc64le-ppc64-Large-code-model-for-JIT-.patch

@@ -0,0 +1,71 @@
+From d0ff02e567541468309923fed2320da6cbd81779 Mon Sep 17 00:00:00 2001
+From: Ben Crocker <bcrocker@redhat.com>
+Date: Thu, 21 Nov 2019 17:33:31 -0500
+Subject: [PATCH] llvmpipe: use ppc64le/ppc64 Large code model for JIT-compiled
+ shaders
+
+Large programs, e.g. gnome-shell and firefox, may tax the
+addressability of the Medium code model once a (potentially unbounded)
+number of dynamically generated JIT-compiled shader programs are
+linked in and relocated.  Yet the default code model as of LLVM 8 is
+Medium or even Small.
+
+The cost of changing from Medium to Large is negligible:
+- an additional 8-byte pointer stored immediately before the shader entrypoint;
+- change an add-immediate (addis) instruction to a load (ld).
+
+Testing with WebGL Conformance
+(https://www.khronos.org/registry/webgl/sdk/tests/webgl-conformance-tests.html)
+yields clean runs with this change (and crashes without it).
+
+Testing with glxgears shows no detectable performance difference.
+
+Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1753327, 1543572, 1747110, and 1582226
+
+Closes: https://gitlab.freedesktop.org/mesa/mesa/issues/223
+
+Co-authored by: Nemanja Ivanovic <nemanjai@ca.ibm.com>, Tom Stellard <tstellar@redhat.com>
+
+CC: mesa-stable@lists.freedesktop.org
+
+Signed-off-by: Ben Crocker <bcrocker@redhat.com>
+Reviewed-by: Adam Jackson <ajax@redhat.com>
+---
+ src/gallium/auxiliary/gallivm/lp_bld_misc.cpp | 15 ++++++++++++++-
+ 1 file changed, 14 insertions(+), 1 deletion(-)
+
+diff --git a/src/gallium/auxiliary/gallivm/lp_bld_misc.cpp b/src/gallium/auxiliary/gallivm/lp_bld_misc.cpp
+--- a/src/gallium/auxiliary/gallivm/lp_bld_misc.cpp
++++ b/src/gallium/auxiliary/gallivm/lp_bld_misc.cpp
+@@ -686,7 +686,19 @@ lp_build_create_jit_compiler_for_module(LLVMExecutionEngineRef *OutJIT,
+     * when not using MCJIT so no instructions are generated which the old JIT
+     * can't handle. Not entirely sure if we really need to do anything yet.
+     */
+-#if defined(PIPE_ARCH_LITTLE_ENDIAN)  && defined(PIPE_ARCH_PPC_64)
++#ifdef PIPE_ARCH_PPC_64
++   /*
++    * Large programs, e.g. gnome-shell and firefox, may tax the addressability
++    * of the Medium code model once dynamically generated JIT-compiled shader
++    * programs are linked in and relocated.  Yet the default code model as of
++    * LLVM 8 is Medium or even Small.
++    * The cost of changing from Medium to Large is negligible:
++    * - an additional 8-byte pointer stored immediately before the shader entrypoint;
++    * - change an add-immediate (addis) instruction to a load (ld).
++    */
++   builder.setCodeModel(CodeModel::Large);
++
++#ifdef PIPE_ARCH_LITTLE_ENDIAN
+    /*
+     * Versions of LLVM prior to 4.0 lacked a table entry for "POWER8NVL",
+     * resulting in (big-endian) "generic" being returned on
+@@ -698,6 +710,7 @@ lp_build_create_jit_compiler_for_module(LLVMExecutionEngineRef *OutJIT,
+     */
+    if (MCPU == "generic")
+       MCPU = "pwr8";
++#endif
+ #endif
+    builder.setMCPU(MCPU);
+    if (gallivm_debug & (GALLIVM_DEBUG_IR | GALLIVM_DEBUG_ASM | GALLIVM_DEBUG_DUMP_BC)) {
+-- 
+2.21.0
+

SOURCES/make-git-snapshot.sh

@@ -5,18 +5,24 @@
 # to make a snapshot of the given tag/branch.  Defaults to HEAD.
 # Point env var REF to a local mesa repo to reduce clone time.
 
-DIRNAME=libdrm-$( date +%Y%m%d )
+if [ -e /usr/bin/pxz ]; then
+    XZ=/usr/bin/pxz
+else
+    XZ=/usr/bin/xz
+fi
+
+DIRNAME=mesa-$( date +%Y%m%d )
 
 echo REF ${REF:+--reference $REF}
 echo DIRNAME $DIRNAME
-echo HEAD ${1:-HEAD}
+echo HEAD ${1:-18.0}
 
 rm -rf $DIRNAME
 
-git clone ${REF:+--reference $REF} \
-	git://git.freedesktop.org/git/mesa/drm $DIRNAME
+git clone --depth 1 ${REF:+--reference $REF} --branch 18.0 \
+	git://git.freedesktop.org/git/mesa/mesa $DIRNAME
 
 GIT_DIR=$DIRNAME/.git git archive --format=tar --prefix=$DIRNAME/ ${1:-HEAD} \
-	| bzip2 > $DIRNAME.tar.bz2
+	| $XZ > $DIRNAME.tar.xz
 
 # rm -rf $DIRNAME