dev-util/intel-graphics-compiler: bump to 1.0.4944

The first version supporting VectorCompiler which actually builds
(as well as lets intel-neo build afterwards; tested on 20.36 a moment
ago) without patching with VC support disabled.

Nb. I am still working on enabling VC support in Gentoo, dependencies
have been taken care of but now src_compile fails due to IGC being
unable to find functions and classes declared ELSEWHERE IN ITS OWN CODE.

Signed-off-by: Marek Szuba <marecki@gentoo.org>

2 files changed, 73 insertions, 0 deletions

diff --git a/dev-util/intel-graphics-compiler/Manifest b/dev-util/intel-graphics-compiler/Manifest
index bb330148e014..d7d3b0ae0c3b 100644
--- a/dev-util/intel-graphics-compiler/Manifest
+++ b/dev-util/intel-graphics-compiler/Manifest
@@ -1 +1,2 @@
 DIST intel-graphics-compiler-1.0.4111.tar.gz 5781246 BLAKE2B 6fe47422b31b0c73d24c3cef1265772927a57751bf5648f862f7c73528f2174268fdb2271c30c49ab038b4dfbe530bc088fe727e66babc5db0a41759e7212733 SHA512 8f589ee83a27b7a8f5abcd008e36a73fb704c20c1ae17e1ef265c59641768b75a0a08f2d6f80355442fff7625154603db3ebe9be0a4ba702b45e85db434f8110
+DIST intel-graphics-compiler-1.0.4944.tar.gz 6632351 BLAKE2B a3d72730b8c10fd3810fdb8206d9d92da325a094627b678bb9f8d0941e29c1697994a2d98a1b49780fae62dc421e623dea4c3a7e3061347de5f5b644cfb5e105 SHA512 34fafd5387f3b86bef17511015ff1e8daef75ebdff5d1d14ff2000b58968bb502a9ec1aee988858a2992414f6cdb222e7de19c2d877f7fc8cd84a79417e9a85e
diff --git a/dev-util/intel-graphics-compiler/intel-graphics-compiler-1.0.4944.ebuild b/dev-util/intel-graphics-compiler/intel-graphics-compiler-1.0.4944.ebuild
new file mode 100644
index 000000000000..7651df693d6b
--- /dev/null
+++ b/dev-util/intel-graphics-compiler/intel-graphics-compiler-1.0.4944.ebuild
@@ -0,0 +1,72 @@
+# Copyright 1999-2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+CMAKE_ECLASS=cmake
+
+inherit cmake-multilib flag-o-matic llvm
+
+DESCRIPTION="LLVM-based OpenCL compiler targetting Intel Gen graphics hardware"
+HOMEPAGE="https://github.com/intel/intel-graphics-compiler"
+SRC_URI="https://github.com/intel/${PN}/archive/igc-${PV}.tar.gz -> ${P}.tar.gz"
+
+LICENSE="MIT"
+SLOT="0"
+KEYWORDS="~amd64"
+IUSE="debug"
+
+LLVM_MAX_SLOT=10
+
+# Yes, the last dependency does effectively force the use of llvm-10
+# - there are currently no SLOT=9 ebuilds of opencl-clang with mem2reg
+# support. Of course with there being no SLOT=9 ebuilds of vc-intrinsics
+# (which we'll need soon as well) at all either we are limited to llvm-10 anyway.
+COMMON="<=sys-devel/llvm-${LLVM_MAX_SLOT}.9999:=[${MULTILIB_USEDEP}]
+	<=dev-libs/opencl-clang-${LLVM_MAX_SLOT}.9999:=[${MULTILIB_USEDEP}]
+	>=dev-libs/opencl-clang-10.0.0.2:=[${MULTILIB_USEDEP}]"
+DEPEND="${COMMON}"
+RDEPEND="${COMMON}"
+
+PATCHES=(
+	"${FILESDIR}"/${PN}-1.0.9-no_Werror.patch
+	"${FILESDIR}"/${PN}-1.0.4111-opencl-clang_version.patch
+)
+#	"${FILESDIR}"/${PN}-1.0.4427-noVC_TranslateBuild_retval.patch
+
+S="${WORKDIR}"/${PN}-igc-${PV}
+
+find_best_llvm_slot() {
+	local candidate_slot
+
+	# Select the same slot as the best opencl-clang
+	local ocl_clang_ver="$(best_version -d dev-libs/opencl-clang:=)"
+	einfo "Selecting ${ocl_clang_ver}"
+	candidate_slot=$(ver_cut 5 ${ocl_clang_ver})
+
+	# Sanity check - opencl-clang brings the right LLVM slot as its
+	# dependency so if this is missing, something is very wrong.
+	has_version -d sys-devel/llvm:${candidate_slot} || die "LLVM slot matching ${ocl_clang_ver} not found (${candidate_slot})"
+
+	echo ${candidate_slot}
+}
+
+multilib_src_configure() {
+	local llvm_slot=$(find_best_llvm_slot)
+	einfo "Selecting LLVM slot ${llvm_slot}: $(best_version -d sys-devel/llvm:${llvm_slot})"
+	local llvm_prefix=$(get_llvm_prefix ${llvm_slot})
+
+	# Since late March 2020 cmake.eclass does not set -DNDEBUG any more, and the way
+	# IGC uses this definition causes problems for some users (see Bug #718824).
+	use debug || append-cppflags -DNDEBUG
+
+	# VectorCompiler needs work, at the moment upstream only supports building vc-intrinsics in place.
+	local mycmakeargs=(
+		-DCCLANG_SONAME_VERSION=${llvm_slot}
+		-DCMAKE_LIBRARY_PATH="${llvm_prefix}"/$(get_libdir)
+		-DIGC_OPTION__FORCE_SYSTEM_LLVM=ON
+		-DIGC_PREFERRED_LLVM_VERSION=${llvm_slot}
+		-DIGC_BUILD__VC_ENABLED=no
+	)
+	cmake_src_configure
+}