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import mesa-19.1.4-3.el8_1

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CentOS Sources 2019-12-17 04:21:17 -05:00 committed by Andrew Lukoshko
parent f2aa419a82
commit 9da3f5aaa8
2 changed files with 77 additions and 1 deletions
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72
SOURCES/0001-llvmpipe-use-ppc64le-ppc64-Large-code-model-for-JIT-.patch Normal file
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@ -0,0 +1,72 @@
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
index f307c26d4f7..af891f44684 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_misc.cpp
+++ b/src/gallium/auxiliary/gallivm/lp_bld_misc.cpp
@@ -692,7 +692,19 @@ 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
@@ -704,6 +716,7 @@ 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

6
SPECS/mesa.spec
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@ -41,7 +41,7 @@
Name: mesa
Summary: Mesa graphics libraries
Version: 19.1.4
Release: 2%{?rctag:.%{rctag}}%{?dist}
Release: 3%{?rctag:.%{rctag}}%{?dist}
License: MIT
URL: http://www.mesa3d.org
@ -58,6 +58,7 @@ Source4: Mesa-MLAA-License-Clarification-Email.txt
Source5: glesv2.pc
Patch0: 0001-mesa-add-support-for-CET-to-x86-x86-64-asm-files.patch
Patch1: 0001-llvmpipe-use-ppc64le-ppc64-Large-code-model-for-JIT-.patch
BuildRequires: gcc
BuildRequires: gcc-c++
@ -601,6 +602,9 @@ done
%endif
%changelog
* Mon Nov 25 2019 Ben Crocker <bcrocker@redhat.com> - 19.1.4-3
- Patch to require Large CodeModel for llvmpipe on ppc64
* Fri Aug 09 2019 Dave Airlie <airlied@redhat.com> - 19.1.4-2
- Add CET support to asm files