Author: bhushan.attarde Date: Thu Feb 18 05:53:28 2016 New Revision: 261206
URL: http://llvm.org/viewvc/llvm-project?rev=261206&view=rev Log: [LLDB][MIPS] Provide CPU string to compiler for appropriate code generation for MIPS SUMMARY: This patch implements ArchSpec::GetClangTargetCPU() that provides string representing current architecture as a target CPU. This string is then passed to tools like clang so that they generate correct code for that target. Reviewers: clayborg, zturner Subscribers: mohit.bhakkad, sagar, jaydeep, lldb-commits Differential Revision: http://reviews.llvm.org/D17022 Modified: lldb/trunk/include/lldb/Core/ArchSpec.h lldb/trunk/source/Core/ArchSpec.cpp lldb/trunk/source/Plugins/ExpressionParser/Clang/ClangExpressionParser.cpp Modified: lldb/trunk/include/lldb/Core/ArchSpec.h URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/include/lldb/Core/ArchSpec.h?rev=261206&r1=261205&r2=261206&view=diff ============================================================================== --- lldb/trunk/include/lldb/Core/ArchSpec.h (original) +++ lldb/trunk/include/lldb/Core/ArchSpec.h Thu Feb 18 05:53:28 2016 @@ -288,6 +288,16 @@ public: GetArchitectureName () const; //------------------------------------------------------------------ + /// Returns a string representing current architecture as a target CPU + /// for tools like compiler, disassembler etc. + /// + /// @return A string representing target CPU for the current + /// architecture. + //------------------------------------------------------------------ + std::string + GetClangTargetCPU (); + + //------------------------------------------------------------------ /// Clears the object state. /// /// Clears the object state back to a default invalid state. Modified: lldb/trunk/source/Core/ArchSpec.cpp URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/source/Core/ArchSpec.cpp?rev=261206&r1=261205&r2=261206&view=diff ============================================================================== --- lldb/trunk/source/Core/ArchSpec.cpp (original) +++ lldb/trunk/source/Core/ArchSpec.cpp Thu Feb 18 05:53:28 2016 @@ -511,6 +511,56 @@ ArchSpec::GetArchitectureName () const return "unknown"; } +std::string +ArchSpec::GetClangTargetCPU () +{ + std::string cpu; + const llvm::Triple::ArchType machine = GetMachine(); + + if (machine == llvm::Triple::mips || + machine == llvm::Triple::mipsel || + machine == llvm::Triple::mips64 || + machine == llvm::Triple::mips64el) + { + switch (m_core) + { + case ArchSpec::eCore_mips32: + case ArchSpec::eCore_mips32el: + cpu = "mips32"; break; + case ArchSpec::eCore_mips32r2: + case ArchSpec::eCore_mips32r2el: + cpu = "mips32r2"; break; + case ArchSpec::eCore_mips32r3: + case ArchSpec::eCore_mips32r3el: + cpu = "mips32r3"; break; + case ArchSpec::eCore_mips32r5: + case ArchSpec::eCore_mips32r5el: + cpu = "mips32r5"; break; + case ArchSpec::eCore_mips32r6: + case ArchSpec::eCore_mips32r6el: + cpu = "mips32r6"; break; + case ArchSpec::eCore_mips64: + case ArchSpec::eCore_mips64el: + cpu = "mips64"; break; + case ArchSpec::eCore_mips64r2: + case ArchSpec::eCore_mips64r2el: + cpu = "mips64r2"; break; + case ArchSpec::eCore_mips64r3: + case ArchSpec::eCore_mips64r3el: + cpu = "mips64r3"; break; + case ArchSpec::eCore_mips64r5: + case ArchSpec::eCore_mips64r5el: + cpu = "mips64r5"; break; + case ArchSpec::eCore_mips64r6: + case ArchSpec::eCore_mips64r6el: + cpu = "mips64r6"; break; + default: + break; + } + } + return cpu; +} + uint32_t ArchSpec::GetMachOCPUType () const { Modified: lldb/trunk/source/Plugins/ExpressionParser/Clang/ClangExpressionParser.cpp URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/source/Plugins/ExpressionParser/Clang/ClangExpressionParser.cpp?rev=261206&r1=261205&r2=261206&view=diff ============================================================================== --- lldb/trunk/source/Plugins/ExpressionParser/Clang/ClangExpressionParser.cpp (original) +++ lldb/trunk/source/Plugins/ExpressionParser/Clang/ClangExpressionParser.cpp Thu Feb 18 05:53:28 2016 @@ -179,6 +179,12 @@ ClangExpressionParser::ClangExpressionPa if (exe_scope) target_sp = exe_scope->CalculateTarget(); + ArchSpec target_arch; + if (target_sp) + target_arch = target_sp->GetArchitecture(); + + const auto target_machine = target_arch.GetMachine(); + // If the expression is being evaluated in the context of an existing // stack frame, we introspect to see if the language runtime is available. auto frame = exe_scope->CalculateStackFrame(); @@ -197,9 +203,9 @@ ClangExpressionParser::ClangExpressionPa // 2. Configure the compiler with a set of default options that are appropriate // for most situations. - if (target_sp && target_sp->GetArchitecture().IsValid()) + if (target_sp && target_arch.IsValid()) { - std::string triple = target_sp->GetArchitecture().GetTriple().str(); + std::string triple = target_arch.GetTriple().str(); m_compiler->getTargetOpts().Triple = triple; if (log) log->Printf("Using %s as the target triple", m_compiler->getTargetOpts().Triple.c_str()); @@ -224,13 +230,17 @@ ClangExpressionParser::ClangExpressionPa m_compiler->getTargetOpts().ABI = "apcs-gnu"; } // Supported subsets of x86 - if (target_sp->GetArchitecture().GetMachine() == llvm::Triple::x86 || - target_sp->GetArchitecture().GetMachine() == llvm::Triple::x86_64) + if (target_machine == llvm::Triple::x86 || + target_machine == llvm::Triple::x86_64) { m_compiler->getTargetOpts().Features.push_back("+sse"); m_compiler->getTargetOpts().Features.push_back("+sse2"); } + // Set the target CPU to generate code for. + // This will be empty for any CPU that doesn't really need to make a special CPU string. + m_compiler->getTargetOpts().CPU = target_arch.GetClangTargetCPU(); + // 3. Now allow the runtime to provide custom configuration options for the target. // In this case, a specialized language runtime is available and we can query it for extra options. // For 99% of use cases, this will not be needed and should be provided when basic platform detection is not enough. _______________________________________________ lldb-commits mailing list lldb-commits@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-commits
