ecc47cd80d
If a wavefrontsize32 or wavefrontsize64 is the only possible value insert it into feature list by default and use that value as an indication that another wavefront size is not legal.
400 lines
18 KiB
C++
400 lines
18 KiB
C++
//===--- AMDGPU.cpp - Implement AMDGPU target feature support -------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements AMDGPU TargetInfo objects.
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//
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//===----------------------------------------------------------------------===//
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#include "AMDGPU.h"
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#include "clang/Basic/Builtins.h"
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#include "clang/Basic/Diagnostic.h"
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#include "clang/Basic/LangOptions.h"
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#include "clang/Basic/MacroBuilder.h"
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#include "clang/Basic/TargetBuiltins.h"
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#include "llvm/ADT/SmallString.h"
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using namespace clang;
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using namespace clang::targets;
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namespace clang {
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namespace targets {
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// If you edit the description strings, make sure you update
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// getPointerWidthV().
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static const char *const DataLayoutStringR600 =
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"e-p:32:32-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128"
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"-v192:256-v256:256-v512:512-v1024:1024-v2048:2048-n32:64-S32-A5-G1";
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static const char *const DataLayoutStringAMDGCN =
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"e-p:64:64-p1:64:64-p2:32:32-p3:32:32-p4:64:64-p5:32:32-p6:32:32"
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"-p7:160:256:256:32-p8:128:128:128:48-p9:192:256:256:32-i64:64-"
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"v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-v256:256-v512:512-v1024:1024-"
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"v2048:2048-n32:64-S32-A5-G1-ni:7:8:9";
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const LangASMap AMDGPUTargetInfo::AMDGPUDefIsGenMap = {
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llvm::AMDGPUAS::FLAT_ADDRESS, // Default
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llvm::AMDGPUAS::GLOBAL_ADDRESS, // opencl_global
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llvm::AMDGPUAS::LOCAL_ADDRESS, // opencl_local
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llvm::AMDGPUAS::CONSTANT_ADDRESS, // opencl_constant
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llvm::AMDGPUAS::PRIVATE_ADDRESS, // opencl_private
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llvm::AMDGPUAS::FLAT_ADDRESS, // opencl_generic
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llvm::AMDGPUAS::GLOBAL_ADDRESS, // opencl_global_device
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llvm::AMDGPUAS::GLOBAL_ADDRESS, // opencl_global_host
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llvm::AMDGPUAS::GLOBAL_ADDRESS, // cuda_device
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llvm::AMDGPUAS::CONSTANT_ADDRESS, // cuda_constant
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llvm::AMDGPUAS::LOCAL_ADDRESS, // cuda_shared
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llvm::AMDGPUAS::GLOBAL_ADDRESS, // sycl_global
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llvm::AMDGPUAS::GLOBAL_ADDRESS, // sycl_global_device
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llvm::AMDGPUAS::GLOBAL_ADDRESS, // sycl_global_host
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llvm::AMDGPUAS::LOCAL_ADDRESS, // sycl_local
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llvm::AMDGPUAS::PRIVATE_ADDRESS, // sycl_private
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llvm::AMDGPUAS::FLAT_ADDRESS, // ptr32_sptr
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llvm::AMDGPUAS::FLAT_ADDRESS, // ptr32_uptr
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llvm::AMDGPUAS::FLAT_ADDRESS, // ptr64
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llvm::AMDGPUAS::FLAT_ADDRESS, // hlsl_groupshared
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llvm::AMDGPUAS::CONSTANT_ADDRESS, // hlsl_constant
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// FIXME(pr/122103): hlsl_private -> PRIVATE is wrong, but at least this
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// will break loudly.
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llvm::AMDGPUAS::PRIVATE_ADDRESS, // hlsl_private
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llvm::AMDGPUAS::GLOBAL_ADDRESS, // hlsl_device
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llvm::AMDGPUAS::PRIVATE_ADDRESS, // hlsl_input
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};
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const LangASMap AMDGPUTargetInfo::AMDGPUDefIsPrivMap = {
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llvm::AMDGPUAS::PRIVATE_ADDRESS, // Default
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llvm::AMDGPUAS::GLOBAL_ADDRESS, // opencl_global
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llvm::AMDGPUAS::LOCAL_ADDRESS, // opencl_local
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llvm::AMDGPUAS::CONSTANT_ADDRESS, // opencl_constant
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llvm::AMDGPUAS::PRIVATE_ADDRESS, // opencl_private
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llvm::AMDGPUAS::FLAT_ADDRESS, // opencl_generic
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llvm::AMDGPUAS::GLOBAL_ADDRESS, // opencl_global_device
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llvm::AMDGPUAS::GLOBAL_ADDRESS, // opencl_global_host
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llvm::AMDGPUAS::GLOBAL_ADDRESS, // cuda_device
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llvm::AMDGPUAS::CONSTANT_ADDRESS, // cuda_constant
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llvm::AMDGPUAS::LOCAL_ADDRESS, // cuda_shared
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// SYCL address space values for this map are dummy
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llvm::AMDGPUAS::FLAT_ADDRESS, // sycl_global
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llvm::AMDGPUAS::FLAT_ADDRESS, // sycl_global_device
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llvm::AMDGPUAS::FLAT_ADDRESS, // sycl_global_host
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llvm::AMDGPUAS::FLAT_ADDRESS, // sycl_local
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llvm::AMDGPUAS::FLAT_ADDRESS, // sycl_private
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llvm::AMDGPUAS::FLAT_ADDRESS, // ptr32_sptr
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llvm::AMDGPUAS::FLAT_ADDRESS, // ptr32_uptr
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llvm::AMDGPUAS::FLAT_ADDRESS, // ptr64
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llvm::AMDGPUAS::FLAT_ADDRESS, // hlsl_groupshared
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llvm::AMDGPUAS::CONSTANT_ADDRESS, // hlsl_constant
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llvm::AMDGPUAS::PRIVATE_ADDRESS, // hlsl_private
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llvm::AMDGPUAS::GLOBAL_ADDRESS, // hlsl_device
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llvm::AMDGPUAS::PRIVATE_ADDRESS, // hlsl_input
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};
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} // namespace targets
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} // namespace clang
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static constexpr int NumBuiltins =
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clang::AMDGPU::LastTSBuiltin - Builtin::FirstTSBuiltin;
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static constexpr llvm::StringTable BuiltinStrings =
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CLANG_BUILTIN_STR_TABLE_START
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#define BUILTIN CLANG_BUILTIN_STR_TABLE
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#define TARGET_BUILTIN CLANG_TARGET_BUILTIN_STR_TABLE
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#include "clang/Basic/BuiltinsAMDGPU.def"
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;
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static constexpr auto BuiltinInfos = Builtin::MakeInfos<NumBuiltins>({
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#define BUILTIN CLANG_BUILTIN_ENTRY
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#define TARGET_BUILTIN CLANG_TARGET_BUILTIN_ENTRY
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#include "clang/Basic/BuiltinsAMDGPU.def"
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});
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const char *const AMDGPUTargetInfo::GCCRegNames[] = {
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"v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v8",
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"v9", "v10", "v11", "v12", "v13", "v14", "v15", "v16", "v17",
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"v18", "v19", "v20", "v21", "v22", "v23", "v24", "v25", "v26",
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"v27", "v28", "v29", "v30", "v31", "v32", "v33", "v34", "v35",
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"v36", "v37", "v38", "v39", "v40", "v41", "v42", "v43", "v44",
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"v45", "v46", "v47", "v48", "v49", "v50", "v51", "v52", "v53",
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"v54", "v55", "v56", "v57", "v58", "v59", "v60", "v61", "v62",
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"v63", "v64", "v65", "v66", "v67", "v68", "v69", "v70", "v71",
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"v72", "v73", "v74", "v75", "v76", "v77", "v78", "v79", "v80",
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"v81", "v82", "v83", "v84", "v85", "v86", "v87", "v88", "v89",
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"v90", "v91", "v92", "v93", "v94", "v95", "v96", "v97", "v98",
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"v99", "v100", "v101", "v102", "v103", "v104", "v105", "v106", "v107",
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"v108", "v109", "v110", "v111", "v112", "v113", "v114", "v115", "v116",
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"v117", "v118", "v119", "v120", "v121", "v122", "v123", "v124", "v125",
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"v126", "v127", "v128", "v129", "v130", "v131", "v132", "v133", "v134",
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"v135", "v136", "v137", "v138", "v139", "v140", "v141", "v142", "v143",
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"v144", "v145", "v146", "v147", "v148", "v149", "v150", "v151", "v152",
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"v153", "v154", "v155", "v156", "v157", "v158", "v159", "v160", "v161",
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"v162", "v163", "v164", "v165", "v166", "v167", "v168", "v169", "v170",
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"v171", "v172", "v173", "v174", "v175", "v176", "v177", "v178", "v179",
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"v180", "v181", "v182", "v183", "v184", "v185", "v186", "v187", "v188",
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"v189", "v190", "v191", "v192", "v193", "v194", "v195", "v196", "v197",
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"v198", "v199", "v200", "v201", "v202", "v203", "v204", "v205", "v206",
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"v207", "v208", "v209", "v210", "v211", "v212", "v213", "v214", "v215",
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"v216", "v217", "v218", "v219", "v220", "v221", "v222", "v223", "v224",
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"v225", "v226", "v227", "v228", "v229", "v230", "v231", "v232", "v233",
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"v234", "v235", "v236", "v237", "v238", "v239", "v240", "v241", "v242",
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"v243", "v244", "v245", "v246", "v247", "v248", "v249", "v250", "v251",
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"v252", "v253", "v254", "v255", "s0", "s1", "s2", "s3", "s4",
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"s5", "s6", "s7", "s8", "s9", "s10", "s11", "s12", "s13",
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"s14", "s15", "s16", "s17", "s18", "s19", "s20", "s21", "s22",
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"s23", "s24", "s25", "s26", "s27", "s28", "s29", "s30", "s31",
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"s32", "s33", "s34", "s35", "s36", "s37", "s38", "s39", "s40",
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"s41", "s42", "s43", "s44", "s45", "s46", "s47", "s48", "s49",
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"s50", "s51", "s52", "s53", "s54", "s55", "s56", "s57", "s58",
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"s59", "s60", "s61", "s62", "s63", "s64", "s65", "s66", "s67",
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"s68", "s69", "s70", "s71", "s72", "s73", "s74", "s75", "s76",
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"s77", "s78", "s79", "s80", "s81", "s82", "s83", "s84", "s85",
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"s86", "s87", "s88", "s89", "s90", "s91", "s92", "s93", "s94",
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"s95", "s96", "s97", "s98", "s99", "s100", "s101", "s102", "s103",
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"s104", "s105", "s106", "s107", "s108", "s109", "s110", "s111", "s112",
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"s113", "s114", "s115", "s116", "s117", "s118", "s119", "s120", "s121",
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"s122", "s123", "s124", "s125", "s126", "s127", "exec", "vcc", "scc",
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"m0", "flat_scratch", "exec_lo", "exec_hi", "vcc_lo", "vcc_hi",
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"flat_scratch_lo", "flat_scratch_hi",
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"a0", "a1", "a2", "a3", "a4", "a5", "a6", "a7", "a8",
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"a9", "a10", "a11", "a12", "a13", "a14", "a15", "a16", "a17",
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"a18", "a19", "a20", "a21", "a22", "a23", "a24", "a25", "a26",
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"a27", "a28", "a29", "a30", "a31", "a32", "a33", "a34", "a35",
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"a36", "a37", "a38", "a39", "a40", "a41", "a42", "a43", "a44",
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"a45", "a46", "a47", "a48", "a49", "a50", "a51", "a52", "a53",
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"a54", "a55", "a56", "a57", "a58", "a59", "a60", "a61", "a62",
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"a63", "a64", "a65", "a66", "a67", "a68", "a69", "a70", "a71",
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"a72", "a73", "a74", "a75", "a76", "a77", "a78", "a79", "a80",
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"a81", "a82", "a83", "a84", "a85", "a86", "a87", "a88", "a89",
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"a90", "a91", "a92", "a93", "a94", "a95", "a96", "a97", "a98",
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"a99", "a100", "a101", "a102", "a103", "a104", "a105", "a106", "a107",
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"a108", "a109", "a110", "a111", "a112", "a113", "a114", "a115", "a116",
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"a117", "a118", "a119", "a120", "a121", "a122", "a123", "a124", "a125",
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"a126", "a127", "a128", "a129", "a130", "a131", "a132", "a133", "a134",
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"a135", "a136", "a137", "a138", "a139", "a140", "a141", "a142", "a143",
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"a144", "a145", "a146", "a147", "a148", "a149", "a150", "a151", "a152",
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"a153", "a154", "a155", "a156", "a157", "a158", "a159", "a160", "a161",
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"a162", "a163", "a164", "a165", "a166", "a167", "a168", "a169", "a170",
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"a171", "a172", "a173", "a174", "a175", "a176", "a177", "a178", "a179",
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"a180", "a181", "a182", "a183", "a184", "a185", "a186", "a187", "a188",
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"a189", "a190", "a191", "a192", "a193", "a194", "a195", "a196", "a197",
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"a198", "a199", "a200", "a201", "a202", "a203", "a204", "a205", "a206",
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"a207", "a208", "a209", "a210", "a211", "a212", "a213", "a214", "a215",
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"a216", "a217", "a218", "a219", "a220", "a221", "a222", "a223", "a224",
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"a225", "a226", "a227", "a228", "a229", "a230", "a231", "a232", "a233",
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"a234", "a235", "a236", "a237", "a238", "a239", "a240", "a241", "a242",
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"a243", "a244", "a245", "a246", "a247", "a248", "a249", "a250", "a251",
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"a252", "a253", "a254", "a255"
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};
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ArrayRef<const char *> AMDGPUTargetInfo::getGCCRegNames() const {
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return llvm::ArrayRef(GCCRegNames);
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}
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bool AMDGPUTargetInfo::initFeatureMap(
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llvm::StringMap<bool> &Features, DiagnosticsEngine &Diags, StringRef CPU,
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const std::vector<std::string> &FeatureVec) const {
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using namespace llvm::AMDGPU;
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if (!TargetInfo::initFeatureMap(Features, Diags, CPU, FeatureVec))
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return false;
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// TODO: Should move this logic into TargetParser
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auto HasError = insertWaveSizeFeature(CPU, getTriple(), Features);
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switch (HasError.first) {
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default:
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break;
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case llvm::AMDGPU::INVALID_FEATURE_COMBINATION:
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Diags.Report(diag::err_invalid_feature_combination) << HasError.second;
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return false;
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case llvm::AMDGPU::UNSUPPORTED_TARGET_FEATURE:
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Diags.Report(diag::err_opt_not_valid_on_target) << HasError.second;
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return false;
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}
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return true;
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}
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void AMDGPUTargetInfo::fillValidCPUList(
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SmallVectorImpl<StringRef> &Values) const {
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if (isAMDGCN(getTriple()))
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llvm::AMDGPU::fillValidArchListAMDGCN(Values);
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else
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llvm::AMDGPU::fillValidArchListR600(Values);
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}
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void AMDGPUTargetInfo::setAddressSpaceMap(bool DefaultIsPrivate) {
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AddrSpaceMap = DefaultIsPrivate ? &AMDGPUDefIsPrivMap : &AMDGPUDefIsGenMap;
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}
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AMDGPUTargetInfo::AMDGPUTargetInfo(const llvm::Triple &Triple,
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const TargetOptions &Opts)
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: TargetInfo(Triple),
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GPUKind(isAMDGCN(Triple) ?
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llvm::AMDGPU::parseArchAMDGCN(Opts.CPU) :
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llvm::AMDGPU::parseArchR600(Opts.CPU)),
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GPUFeatures(isAMDGCN(Triple) ?
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llvm::AMDGPU::getArchAttrAMDGCN(GPUKind) :
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llvm::AMDGPU::getArchAttrR600(GPUKind)) {
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resetDataLayout(isAMDGCN(getTriple()) ? DataLayoutStringAMDGCN
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: DataLayoutStringR600);
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setAddressSpaceMap(Triple.getOS() == llvm::Triple::Mesa3D ||
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!isAMDGCN(Triple));
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UseAddrSpaceMapMangling = true;
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if (isAMDGCN(Triple)) {
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// __bf16 is always available as a load/store only type on AMDGCN.
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BFloat16Width = BFloat16Align = 16;
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BFloat16Format = &llvm::APFloat::BFloat();
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}
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HasFastHalfType = true;
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HasFloat16 = true;
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WavefrontSize = (GPUFeatures & llvm::AMDGPU::FEATURE_WAVE32) ? 32 : 64;
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// Set pointer width and alignment for the generic address space.
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PointerWidth = PointerAlign = getPointerWidthV(LangAS::Default);
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if (getMaxPointerWidth() == 64) {
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LongWidth = LongAlign = 64;
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SizeType = UnsignedLong;
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PtrDiffType = SignedLong;
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IntPtrType = SignedLong;
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}
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MaxAtomicPromoteWidth = MaxAtomicInlineWidth = 64;
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CUMode = !(GPUFeatures & llvm::AMDGPU::FEATURE_WGP);
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for (auto F : {"image-insts", "gws", "vmem-to-lds-load-insts"}) {
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if (GPUKind != llvm::AMDGPU::GK_NONE)
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ReadOnlyFeatures.insert(F);
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}
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HalfArgsAndReturns = true;
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}
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void AMDGPUTargetInfo::adjust(DiagnosticsEngine &Diags, LangOptions &Opts,
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const TargetInfo *Aux) {
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TargetInfo::adjust(Diags, Opts, Aux);
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// ToDo: There are still a few places using default address space as private
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// address space in OpenCL, which needs to be cleaned up, then the references
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// to OpenCL can be removed from the following line.
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setAddressSpaceMap((Opts.OpenCL && !Opts.OpenCLGenericAddressSpace) ||
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!isAMDGCN(getTriple()));
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AtomicOpts = AtomicOptions(Opts);
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}
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llvm::SmallVector<Builtin::InfosShard>
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AMDGPUTargetInfo::getTargetBuiltins() const {
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return {{&BuiltinStrings, BuiltinInfos}};
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}
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void AMDGPUTargetInfo::getTargetDefines(const LangOptions &Opts,
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MacroBuilder &Builder) const {
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Builder.defineMacro("__AMD__");
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Builder.defineMacro("__AMDGPU__");
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if (isAMDGCN(getTriple()))
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Builder.defineMacro("__AMDGCN__");
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else
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Builder.defineMacro("__R600__");
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// Legacy HIP host code relies on these default attributes to be defined.
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bool IsHIPHost = Opts.HIP && !Opts.CUDAIsDevice;
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if (GPUKind == llvm::AMDGPU::GK_NONE && !IsHIPHost)
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return;
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llvm::SmallString<16> CanonName =
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(isAMDGCN(getTriple()) ? getArchNameAMDGCN(GPUKind)
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: getArchNameR600(GPUKind));
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// Sanitize the name of generic targets.
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// e.g. gfx10-1-generic -> gfx10_1_generic
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if (GPUKind >= llvm::AMDGPU::GK_AMDGCN_GENERIC_FIRST &&
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GPUKind <= llvm::AMDGPU::GK_AMDGCN_GENERIC_LAST) {
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llvm::replace(CanonName, '-', '_');
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}
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Builder.defineMacro(Twine("__") + Twine(CanonName) + Twine("__"));
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// Emit macros for gfx family e.g. gfx906 -> __GFX9__, gfx1030 -> __GFX10___
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if (isAMDGCN(getTriple()) && !IsHIPHost) {
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assert(StringRef(CanonName).starts_with("gfx") &&
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"Invalid amdgcn canonical name");
|
|
StringRef CanonFamilyName = getArchFamilyNameAMDGCN(GPUKind);
|
|
Builder.defineMacro(Twine("__") + Twine(CanonFamilyName.upper()) +
|
|
Twine("__"));
|
|
Builder.defineMacro("__amdgcn_processor__",
|
|
Twine("\"") + Twine(CanonName) + Twine("\""));
|
|
Builder.defineMacro("__amdgcn_target_id__",
|
|
Twine("\"") + Twine(*getTargetID()) + Twine("\""));
|
|
for (auto F : getAllPossibleTargetIDFeatures(getTriple(), CanonName)) {
|
|
auto Loc = OffloadArchFeatures.find(F);
|
|
if (Loc != OffloadArchFeatures.end()) {
|
|
std::string NewF = F.str();
|
|
llvm::replace(NewF, '-', '_');
|
|
Builder.defineMacro(Twine("__amdgcn_feature_") + Twine(NewF) +
|
|
Twine("__"),
|
|
Loc->second ? "1" : "0");
|
|
}
|
|
}
|
|
}
|
|
|
|
if (Opts.AtomicIgnoreDenormalMode)
|
|
Builder.defineMacro("__AMDGCN_UNSAFE_FP_ATOMICS__");
|
|
|
|
// TODO: __HAS_FMAF__, __HAS_LDEXPF__, __HAS_FP64__ are deprecated and will be
|
|
// removed in the near future.
|
|
if (hasFMAF())
|
|
Builder.defineMacro("__HAS_FMAF__");
|
|
if (hasFastFMAF())
|
|
Builder.defineMacro("FP_FAST_FMAF");
|
|
if (hasLDEXPF())
|
|
Builder.defineMacro("__HAS_LDEXPF__");
|
|
if (hasFP64())
|
|
Builder.defineMacro("__HAS_FP64__");
|
|
if (hasFastFMA())
|
|
Builder.defineMacro("FP_FAST_FMA");
|
|
|
|
Builder.defineMacro("__AMDGCN_WAVEFRONT_SIZE__", Twine(WavefrontSize),
|
|
"compile-time-constant access to the wavefront size will "
|
|
"be removed in a future release");
|
|
Builder.defineMacro("__AMDGCN_WAVEFRONT_SIZE", Twine(WavefrontSize),
|
|
"compile-time-constant access to the wavefront size will "
|
|
"be removed in a future release");
|
|
Builder.defineMacro("__AMDGCN_CUMODE__", Twine(CUMode));
|
|
}
|
|
|
|
void AMDGPUTargetInfo::setAuxTarget(const TargetInfo *Aux) {
|
|
assert(HalfFormat == Aux->HalfFormat);
|
|
assert(FloatFormat == Aux->FloatFormat);
|
|
assert(DoubleFormat == Aux->DoubleFormat);
|
|
|
|
// On x86_64 long double is 80-bit extended precision format, which is
|
|
// not supported by AMDGPU. 128-bit floating point format is also not
|
|
// supported by AMDGPU. Therefore keep its own format for these two types.
|
|
auto SaveLongDoubleFormat = LongDoubleFormat;
|
|
auto SaveFloat128Format = Float128Format;
|
|
auto SaveLongDoubleWidth = LongDoubleWidth;
|
|
auto SaveLongDoubleAlign = LongDoubleAlign;
|
|
copyAuxTarget(Aux);
|
|
LongDoubleFormat = SaveLongDoubleFormat;
|
|
Float128Format = SaveFloat128Format;
|
|
LongDoubleWidth = SaveLongDoubleWidth;
|
|
LongDoubleAlign = SaveLongDoubleAlign;
|
|
// For certain builtin types support on the host target, claim they are
|
|
// support to pass the compilation of the host code during the device-side
|
|
// compilation.
|
|
// FIXME: As the side effect, we also accept `__float128` uses in the device
|
|
// code. To rejct these builtin types supported in the host target but not in
|
|
// the device target, one approach would support `device_builtin` attribute
|
|
// so that we could tell the device builtin types from the host ones. The
|
|
// also solves the different representations of the same builtin type, such
|
|
// as `size_t` in the MSVC environment.
|
|
if (Aux->hasFloat128Type()) {
|
|
HasFloat128 = true;
|
|
Float128Format = DoubleFormat;
|
|
}
|
|
}
|