Author: koriakin Date: Wed May 4 18:37:40 2016 New Revision: 268575 URL: http://llvm.org/viewvc/llvm-project?rev=268575&view=rev Log: [SystemZ] Add -mbackchain option.
This option, like the corresponding gcc option, is SystemZ-specific and enables storing frame backchain links, as specified in the ABI. Differential Revision: http://reviews.llvm.org/D19891 Added: cfe/trunk/test/CodeGen/mbackchain-2.c cfe/trunk/test/CodeGen/mbackchain-3.c cfe/trunk/test/CodeGen/mbackchain.c Modified: cfe/trunk/include/clang/Driver/Options.td cfe/trunk/include/clang/Frontend/CodeGenOptions.def cfe/trunk/lib/CodeGen/CGCall.cpp cfe/trunk/lib/Driver/Tools.cpp cfe/trunk/lib/Frontend/CompilerInvocation.cpp Modified: cfe/trunk/include/clang/Driver/Options.td URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Driver/Options.td?rev=268575&r1=268574&r2=268575&view=diff ============================================================================== --- cfe/trunk/include/clang/Driver/Options.td (original) +++ cfe/trunk/include/clang/Driver/Options.td Wed May 4 18:37:40 2016 @@ -1524,6 +1524,10 @@ def fno_zvector : Flag<["-"], "fno-zvect def mzvector : Flag<["-"], "mzvector">, Alias<fzvector>; def mno_zvector : Flag<["-"], "mno-zvector">, Alias<fno_zvector>; +def mbackchain : Flag<["-"], "mbackchain">, Group<m_Group>, Flags<[DriverOption,CC1Option]>, + HelpText<"Link stack frames through backchain on System Z">; +def mno_backchain : Flag<["-"], "mno-backchain">, Group<m_Group>, Flags<[DriverOption,CC1Option]>; + def mno_warn_nonportable_cfstrings : Flag<["-"], "mno-warn-nonportable-cfstrings">, Group<m_Group>; def mno_omit_leaf_frame_pointer : Flag<["-"], "mno-omit-leaf-frame-pointer">, Group<m_Group>; def momit_leaf_frame_pointer : Flag<["-"], "momit-leaf-frame-pointer">, Group<m_Group>, Modified: cfe/trunk/include/clang/Frontend/CodeGenOptions.def URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Frontend/CodeGenOptions.def?rev=268575&r1=268574&r2=268575&view=diff ============================================================================== --- cfe/trunk/include/clang/Frontend/CodeGenOptions.def (original) +++ cfe/trunk/include/clang/Frontend/CodeGenOptions.def Wed May 4 18:37:40 2016 @@ -34,6 +34,7 @@ CODEGENOPT(AsmVerbose , 1, 0) /// CODEGENOPT(AssumeSaneOperatorNew , 1, 1) ///< implicit __attribute__((malloc)) operator new CODEGENOPT(Autolink , 1, 1) ///< -fno-autolink CODEGENOPT(ObjCAutoRefCountExceptions , 1, 0) ///< Whether ARC should be EH-safe. +CODEGENOPT(Backchain , 1, 0) ///< -mbackchain CODEGENOPT(CoverageExtraChecksum, 1, 0) ///< Whether we need a second checksum for functions in GCNO files. CODEGENOPT(CoverageNoFunctionNamesInData, 1, 0) ///< Do not include function names in GCDA files. CODEGENOPT(CoverageExitBlockBeforeBody, 1, 0) ///< Whether to emit the exit block before the body blocks in GCNO files. Modified: cfe/trunk/lib/CodeGen/CGCall.cpp URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGCall.cpp?rev=268575&r1=268574&r2=268575&view=diff ============================================================================== --- cfe/trunk/lib/CodeGen/CGCall.cpp (original) +++ cfe/trunk/lib/CodeGen/CGCall.cpp Wed May 4 18:37:40 2016 @@ -1714,6 +1714,8 @@ void CodeGenModule::ConstructAttributeLi if (CodeGenOpts.StackRealignment) FuncAttrs.addAttribute("stackrealign"); + if (CodeGenOpts.Backchain) + FuncAttrs.addAttribute("backchain"); // Add target-cpu and target-features attributes to functions. If // we have a decl for the function and it has a target attribute then Modified: cfe/trunk/lib/Driver/Tools.cpp URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Driver/Tools.cpp?rev=268575&r1=268574&r2=268575&view=diff ============================================================================== --- cfe/trunk/lib/Driver/Tools.cpp (original) +++ cfe/trunk/lib/Driver/Tools.cpp Wed May 4 18:37:40 2016 @@ -1655,6 +1655,12 @@ void Clang::AddSparcTargetArgs(const Arg } } +void Clang::AddSystemZTargetArgs(const ArgList &Args, + ArgStringList &CmdArgs) const { + if (Args.hasFlag(options::OPT_mbackchain, options::OPT_mno_backchain, false)) + CmdArgs.push_back("-mbackchain"); +} + static const char *getSystemZTargetCPU(const ArgList &Args) { if (const Arg *A = Args.getLastArg(options::OPT_march_EQ)) return A->getValue(); @@ -4241,6 +4247,10 @@ void Clang::ConstructJob(Compilation &C, AddSparcTargetArgs(Args, CmdArgs); break; + case llvm::Triple::systemz: + AddSystemZTargetArgs(Args, CmdArgs); + break; + case llvm::Triple::x86: case llvm::Triple::x86_64: AddX86TargetArgs(Args, CmdArgs); Modified: cfe/trunk/lib/Frontend/CompilerInvocation.cpp URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Frontend/CompilerInvocation.cpp?rev=268575&r1=268574&r2=268575&view=diff ============================================================================== --- cfe/trunk/lib/Frontend/CompilerInvocation.cpp (original) +++ cfe/trunk/lib/Frontend/CompilerInvocation.cpp Wed May 4 18:37:40 2016 @@ -782,6 +782,8 @@ static bool ParseCodeGenArgs(CodeGenOpti Opts.CudaGpuBinaryFileNames = Args.getAllArgValues(OPT_fcuda_include_gpubinary); + Opts.Backchain = Args.hasArg(OPT_mbackchain); + return Success; } Added: cfe/trunk/test/CodeGen/mbackchain-2.c URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGen/mbackchain-2.c?rev=268575&view=auto ============================================================================== --- cfe/trunk/test/CodeGen/mbackchain-2.c (added) +++ cfe/trunk/test/CodeGen/mbackchain-2.c Wed May 4 18:37:40 2016 @@ -0,0 +1,7 @@ +// RUN: %clang -mbackchain --target=s390x-linux -S -emit-llvm -o - %s | FileCheck %s + +// CHECK: define void @foo() [[NUW:#[0-9]+]] +void foo(void) { +} + +// CHECK: attributes [[NUW]] = { {{.*}} "backchain" {{.*}} } Added: cfe/trunk/test/CodeGen/mbackchain-3.c URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGen/mbackchain-3.c?rev=268575&view=auto ============================================================================== --- cfe/trunk/test/CodeGen/mbackchain-3.c (added) +++ cfe/trunk/test/CodeGen/mbackchain-3.c Wed May 4 18:37:40 2016 @@ -0,0 +1,7 @@ +// RUN: %clang -mno-backchain --target=s390x-linux -S -emit-llvm -o - %s | FileCheck %s + +// CHECK: define void @foo() [[NUW:#[0-9]+]] +void foo(void) { +} + +// CHECK-NOT: "backchain" Added: cfe/trunk/test/CodeGen/mbackchain.c URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGen/mbackchain.c?rev=268575&view=auto ============================================================================== --- cfe/trunk/test/CodeGen/mbackchain.c (added) +++ cfe/trunk/test/CodeGen/mbackchain.c Wed May 4 18:37:40 2016 @@ -0,0 +1,7 @@ +// RUN: %clang_cc1 -mbackchain -triple s390x-linux -emit-llvm -o - %s | FileCheck %s + +// CHECK: define void @foo() [[NUW:#[0-9]+]] +void foo(void) { +} + +// CHECK: attributes [[NUW]] = { {{.*}} "backchain" {{.*}} } _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
