devel/ispc: enable Intel GPU support

https://ispc.github.io/ispc_for_gen.html

PR:		257720
Tested by:	yuri (testsuite has about the same set of failures as before)
Submitted by:	jbeich

4 files changed, 80 insertions, 0 deletions

diff --git a/devel/ispc/Makefile b/devel/ispc/Makefile
index 00b0b716254b..8bcfa95a296a 100644
--- a/devel/ispc/Makefile
+++ b/devel/ispc/Makefile
@@ -3,6 +3,7 @@
 PORTNAME=	ispc
 DISTVERSIONPREFIX=	v
 DISTVERSION=	1.16.1
+PORTREVISION=	1
 CATEGORIES=	devel
 
 MAINTAINER=	yuri@FreeBSD.org
@@ -35,6 +36,29 @@ BINARY_ALIAS=	flex=${LOCALBASE}/bin/flex python=${PYTHON_CMD} m4=${LOCALBASE}/bi
 PLIST_FILES=	bin/ispc \
 		bin/check_isa
 
+OPTIONS_DEFINE_amd64=	GENX
+OPTIONS_DEFAULT_amd64=	GENX
+
+GENX_DESC=		Intel GPU 8/16-wide SIMD support
+GENX_BUILD_DEPENDS=	${LOCALBASE}/llvm${LLVM_VERSION}/lib/libLLVMGenXIntrinsics.a:devel/vc-intrinsics@llvm${LLVM_VERSION}
+GENX_LIB_DEPENDS=	libze_loader.so:devel/level-zero \
+			libLLVMSPIRVLib.so.${LLVM_VERSION}:devel/spirv-llvm-translator@llvm${LLVM_VERSION}
+GENX_CMAKE_BOOL=	GENX_ENABLED
+GENX_CMAKE_BOOL_OFF=	ISPCRT_BUILD_TESTS
+GENX_CMAKE_ON=		-DGENX_DEPS_DIR:PATH="${LOCALBASE}/llvm${LLVM_VERSION}"
+GENX_PLIST_FILES=	include/ispcrt/ispcrt.h \
+			include/ispcrt/ispcrt.hpp \
+			include/ispcrt/ispcrt.isph \
+			lib/cmake/ispcrt-${PORTVERSION}/Findlevel_zero.cmake \
+			lib/cmake/ispcrt-${PORTVERSION}/ispc.cmake \
+			lib/cmake/ispcrt-${PORTVERSION}/ispcrtConfig.cmake \
+			lib/cmake/ispcrt-${PORTVERSION}/ispcrt_Exports-%%CMAKE_BUILD_TYPE%%.cmake \
+			lib/cmake/ispcrt-${PORTVERSION}/ispcrt_Exports.cmake \
+			lib/libispcrt.so \
+			lib/libispcrt.so.1 \
+			lib/libispcrt.so.${PORTVERSION} \
+			lib/libispcrt_static.a
+
 do-test: # some tests fail: https://github.com/ispc/ispc/issues/1868
 	@cd ${WRKSRC} && ISPC_HOME=${BUILD_WRKSRC}/bin ./run_tests.py
 
diff --git a/devel/ispc/files/patch-cmake_GenerateBuiltins.cmake b/devel/ispc/files/patch-cmake_GenerateBuiltins.cmake
new file mode 100644
index 000000000000..e541332c18f1
--- /dev/null
+++ b/devel/ispc/files/patch-cmake_GenerateBuiltins.cmake
@@ -0,0 +1,11 @@
+--- cmake/GenerateBuiltins.cmake.orig	2021-07-15 23:04:31 UTC
++++ cmake/GenerateBuiltins.cmake
+@@ -289,6 +289,8 @@ function(builtin_genx_to_cpp bit resultFileName)
+         set(os_name "windows")
+     elseif (APPLE)
+         set(SKIP ON)
++    elseif (CMAKE_SYSTEM_NAME STREQUAL "FreeBSD")
++        set(os_name "freebsd")
+     else ()
+         set(os_name "linux")
+     endif()
diff --git a/devel/ispc/files/patch-src_ispc.cpp b/devel/ispc/files/patch-src_ispc.cpp
new file mode 100644
index 000000000000..e06e096d9b80
--- /dev/null
+++ b/devel/ispc/files/patch-src_ispc.cpp
@@ -0,0 +1,25 @@
+--- src/ispc.cpp.orig	2021-07-15 23:04:31 UTC
++++ src/ispc.cpp
+@@ -1464,10 +1464,22 @@ std::string Target::GetTripleString() const {
+             triple.setArchName("armv7");
+         } else if (m_arch == Arch::aarch64) {
+             triple.setArchName("aarch64");
++        } else if (m_arch == Arch::genx32) {
++            triple.setArchName("spir");
++        } else if (m_arch == Arch::genx64) {
++            triple.setArchName("spir64");
+         } else {
+             Error(SourcePos(), "Unknown arch.");
+             exit(1);
+         }
++#ifdef ISPC_GENX_ENABLED
++        if (m_arch == Arch::genx32 || m_arch == Arch::genx64) {
++            //"spir64-unknown-unknown"
++            triple.setVendor(llvm::Triple::VendorType::UnknownVendor);
++            triple.setOS(llvm::Triple::OSType::UnknownOS);
++            return triple.str();
++        }
++#endif
+         triple.setVendor(llvm::Triple::VendorType::UnknownVendor);
+         triple.setOS(llvm::Triple::OSType::FreeBSD);
+         break;
diff --git a/devel/ispc/files/patch-src_module.cpp b/devel/ispc/files/patch-src_module.cpp
new file mode 100644
index 000000000000..987c2fcb2fd6
--- /dev/null
+++ b/devel/ispc/files/patch-src_module.cpp
@@ -0,0 +1,20 @@
+--- src/module.cpp.orig	2021-07-15 23:04:31 UTC
++++ src/module.cpp
+@@ -102,7 +102,7 @@
+ #define OCLOC_LIBRARY_NAME "ocloc64.dll"
+ #elif defined(_WIN32)
+ #define OCLOC_LIBRARY_NAME "ocloc32.dll"
+-#elif defined(__linux__)
++#elif defined(__linux__) || defined(__FreeBSD__)
+ #define OCLOC_LIBRARY_NAME "libocloc.so"
+ #else
+ #error "Unexpected platform"
+@@ -1149,7 +1149,7 @@ bool Module::translateToSPIRV(llvm::Module *module, st
+         llvm::cl::desc("Allow DWARF operations not listed in the OpenCL.DebugInfo.100 "
+                        "specification (experimental, may produce incompatible SPIR-V "
+                        "module)"));
+-#if ISPC_LLVM_VERSION < ISPC_LLVM_12_0
++#if ISPC_LLVM_VERSION >= ISPC_LLVM_13_0
+     Opts.setSPIRVAllowUnknownIntrinsics({"llvm.genx"});
+ #else
+     llvm::cl::opt<bool> SPIRVAllowUnknownIntrinsics(