87d4426988
Some target devices (e.g. Nvidia GPUs) don't support dynamic stack allocation and hence no VLAs. Print errors with description instead of failing in the backend or generating code that doesn't work. This patch handles explicit uses of VLAs (local variable in target or declare target region) or implicitly generated (private) VLAs for reductions on VLAs or on array sections with non-constant size. Differential Revision: https://reviews.llvm.org/D39505 llvm-svn: 318601
128 lines
4.2 KiB
C++
128 lines
4.2 KiB
C++
//===--- SPIR.h - Declare SPIR target feature support -----------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file declares SPIR TargetInfo objects.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CLANG_LIB_BASIC_TARGETS_SPIR_H
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#define LLVM_CLANG_LIB_BASIC_TARGETS_SPIR_H
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#include "clang/Basic/TargetInfo.h"
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#include "clang/Basic/TargetOptions.h"
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#include "llvm/ADT/Triple.h"
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#include "llvm/Support/Compiler.h"
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namespace clang {
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namespace targets {
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static const unsigned SPIRAddrSpaceMap[] = {
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0, // Default
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1, // opencl_global
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3, // opencl_local
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2, // opencl_constant
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0, // opencl_private
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4, // opencl_generic
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0, // cuda_device
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0, // cuda_constant
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0 // cuda_shared
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};
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class LLVM_LIBRARY_VISIBILITY SPIRTargetInfo : public TargetInfo {
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public:
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SPIRTargetInfo(const llvm::Triple &Triple, const TargetOptions &)
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: TargetInfo(Triple) {
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assert(getTriple().getOS() == llvm::Triple::UnknownOS &&
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"SPIR target must use unknown OS");
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assert(getTriple().getEnvironment() == llvm::Triple::UnknownEnvironment &&
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"SPIR target must use unknown environment type");
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TLSSupported = false;
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VLASupported = false;
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LongWidth = LongAlign = 64;
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AddrSpaceMap = &SPIRAddrSpaceMap;
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UseAddrSpaceMapMangling = true;
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// Define available target features
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// These must be defined in sorted order!
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NoAsmVariants = true;
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}
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void getTargetDefines(const LangOptions &Opts,
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MacroBuilder &Builder) const override;
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bool hasFeature(StringRef Feature) const override {
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return Feature == "spir";
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}
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ArrayRef<Builtin::Info> getTargetBuiltins() const override { return None; }
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const char *getClobbers() const override { return ""; }
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ArrayRef<const char *> getGCCRegNames() const override { return None; }
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bool validateAsmConstraint(const char *&Name,
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TargetInfo::ConstraintInfo &info) const override {
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return true;
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}
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ArrayRef<TargetInfo::GCCRegAlias> getGCCRegAliases() const override {
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return None;
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}
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BuiltinVaListKind getBuiltinVaListKind() const override {
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return TargetInfo::VoidPtrBuiltinVaList;
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}
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CallingConvCheckResult checkCallingConvention(CallingConv CC) const override {
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return (CC == CC_SpirFunction || CC == CC_OpenCLKernel) ? CCCR_OK
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: CCCR_Warning;
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}
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CallingConv getDefaultCallingConv(CallingConvMethodType MT) const override {
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return CC_SpirFunction;
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}
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void setSupportedOpenCLOpts() override {
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// Assume all OpenCL extensions and optional core features are supported
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// for SPIR since it is a generic target.
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getSupportedOpenCLOpts().supportAll();
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}
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};
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class LLVM_LIBRARY_VISIBILITY SPIR32TargetInfo : public SPIRTargetInfo {
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public:
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SPIR32TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
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: SPIRTargetInfo(Triple, Opts) {
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PointerWidth = PointerAlign = 32;
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SizeType = TargetInfo::UnsignedInt;
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PtrDiffType = IntPtrType = TargetInfo::SignedInt;
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resetDataLayout("e-p:32:32-i64:64-v16:16-v24:32-v32:32-v48:64-"
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"v96:128-v192:256-v256:256-v512:512-v1024:1024");
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}
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void getTargetDefines(const LangOptions &Opts,
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MacroBuilder &Builder) const override;
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};
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class LLVM_LIBRARY_VISIBILITY SPIR64TargetInfo : public SPIRTargetInfo {
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public:
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SPIR64TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
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: SPIRTargetInfo(Triple, Opts) {
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PointerWidth = PointerAlign = 64;
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SizeType = TargetInfo::UnsignedLong;
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PtrDiffType = IntPtrType = TargetInfo::SignedLong;
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resetDataLayout("e-i64:64-v16:16-v24:32-v32:32-v48:64-"
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"v96:128-v192:256-v256:256-v512:512-v1024:1024");
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}
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void getTargetDefines(const LangOptions &Opts,
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MacroBuilder &Builder) const override;
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};
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} // namespace targets
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} // namespace clang
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#endif // LLVM_CLANG_LIB_BASIC_TARGETS_SPIR_H
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