diff options
Diffstat (limited to 'pkgs/development/compilers/llvm/7/clang/unwindlib.patch')
| -rw-r--r-- | pkgs/development/compilers/llvm/7/clang/unwindlib.patch | 227 |
1 files changed, 227 insertions, 0 deletions
diff --git a/pkgs/development/compilers/llvm/7/clang/unwindlib.patch b/pkgs/development/compilers/llvm/7/clang/unwindlib.patch new file mode 100644 index 000000000000..59a092d7c706 --- /dev/null +++ b/pkgs/development/compilers/llvm/7/clang/unwindlib.patch @@ -0,0 +1,227 @@ +commit a5cacb5ba7f1f18e7bb6f6709e42683eeb7e6470 +Author: Sterling Augustine <saugustine@google.com> +Date: Tue Mar 19 20:01:59 2019 +0000 + + Add --unwindlib=[libgcc|compiler-rt] to parallel --rtlib= [take 2] + + "clang++ hello.cc --rtlib=compiler-rt" + + now can works without specifying additional unwind or exception + handling libraries. + + This reworked version of the feature no longer modifies today's default + unwind library for compiler-rt: which is nothing. Rather, a user + can specify -DCLANG_DEFAULT_UNWINDLIB=libunwind when configuring + the compiler. + + This should address the issues from the previous version. + + Update tests for new --unwindlib semantics. + + Differential Revision: https://reviews.llvm.org/D59109 + + llvm-svn: 356508 + +diff --git clang/CMakeLists.txt clang/CMakeLists.txt +index 52b881939499..2c3fb62f6e73 100644 +--- clang/CMakeLists.txt ++++ clang/CMakeLists.txt +@@ -244,6 +244,24 @@ if (NOT(CLANG_DEFAULT_RTLIB STREQUAL "" OR + "Default runtime library to use (\"libgcc\" or \"compiler-rt\", empty for platform default)" FORCE) + endif() + ++set(CLANG_DEFAULT_UNWINDLIB "" CACHE STRING ++ "Default unwind library to use (\"none\" \"libgcc\" or \"libunwind\", empty to match runtime library.)") ++if (CLANG_DEFAULT_UNWINDLIB STREQUAL "") ++ if (CLANG_DEFAULT_RTLIB STREQUAL "libgcc") ++ set (CLANG_DEFAULT_UNWINDLIB "libgcc" CACHE STRING "" FORCE) ++ elseif (CLANG_DEFAULT_RTLIBS STREQUAL "libunwind") ++ set (CLANG_DEFAULT_UNWINDLIB "none" CACHE STRING "" FORCE) ++ endif() ++endif() ++ ++if (NOT(CLANG_DEFAULT_UNWINDLIB STREQUAL "none" OR ++ CLANG_DEFAULT_UNWINDLIB STREQUAL "libgcc" OR ++ CLANG_DEFAULT_UNWINDLIB STREQUAL "libunwind")) ++ message(WARNING "Resetting default unwindlib to use platform default") ++ set(CLANG_DEFAULT_UNWINDLIB "" CACHE STRING ++ "Default unwind library to use (\"none\" \"libgcc\" or \"libunwind\", empty for none)" FORCE) ++endif() ++ + set(CLANG_DEFAULT_OBJCOPY "objcopy" CACHE STRING + "Default objcopy executable to use.") + +diff --git clang/include/clang/Basic/DiagnosticDriverKinds.td clang/include/clang/Basic/DiagnosticDriverKinds.td +index 7f75f45c6578..7e1bb33b5cef 100644 +--- clang/include/clang/Basic/DiagnosticDriverKinds.td ++++ clang/include/clang/Basic/DiagnosticDriverKinds.td +@@ -52,6 +52,10 @@ def err_drv_invalid_rtlib_name : Error< + "invalid runtime library name in argument '%0'">; + def err_drv_unsupported_rtlib_for_platform : Error< + "unsupported runtime library '%0' for platform '%1'">; ++def err_drv_invalid_unwindlib_name : Error< ++ "invalid unwind library name in argument '%0'">; ++def err_drv_incompatible_unwindlib : Error< ++ "--rtlib=libgcc requires --unwindlib=libgcc">; + def err_drv_invalid_stdlib_name : Error< + "invalid library name in argument '%0'">; + def err_drv_invalid_output_with_multiple_archs : Error< +diff --git clang/include/clang/Config/config.h.cmake clang/include/clang/Config/config.h.cmake +index 1d624450b9d9..2d4cb747e87e 100644 +--- clang/include/clang/Config/config.h.cmake ++++ clang/include/clang/Config/config.h.cmake +@@ -23,6 +23,9 @@ + /* Default runtime library to use. */ + #define CLANG_DEFAULT_RTLIB "${CLANG_DEFAULT_RTLIB}" + ++/* Default unwind library to use. */ ++#define CLANG_DEFAULT_UNWINDLIB "${CLANG_DEFAULT_UNWINDLIB}" ++ + /* Default objcopy to use */ + #define CLANG_DEFAULT_OBJCOPY "${CLANG_DEFAULT_OBJCOPY}" + +diff --git clang/include/clang/Driver/Options.td clang/include/clang/Driver/Options.td +index 601aa8744967..0e74a2d36dea 100644 +--- clang/include/clang/Driver/Options.td ++++ clang/include/clang/Driver/Options.td +@@ -2428,6 +2428,8 @@ def std_EQ : Joined<["-", "--"], "std=">, Flags<[CC1Option]>, + }]>; + def stdlib_EQ : Joined<["-", "--"], "stdlib=">, Flags<[CC1Option]>, + HelpText<"C++ standard library to use">, Values<"libc++,libstdc++,platform">; ++def unwindlib_EQ : Joined<["-", "--"], "unwindlib=">, Flags<[CC1Option]>, ++ HelpText<"Unwind library to use">, Values<"libgcc,unwindlib,platform">; + def sub__library : JoinedOrSeparate<["-"], "sub_library">; + def sub__umbrella : JoinedOrSeparate<["-"], "sub_umbrella">; + def system_header_prefix : Joined<["--"], "system-header-prefix=">, +diff --git clang/include/clang/Driver/ToolChain.h clang/include/clang/Driver/ToolChain.h +index 2f9c2c190e32..d5b131bcf112 100644 +--- clang/include/clang/Driver/ToolChain.h ++++ clang/include/clang/Driver/ToolChain.h +@@ -99,6 +99,12 @@ public: + RLT_Libgcc + }; + ++ enum UnwindLibType { ++ UNW_None, ++ UNW_CompilerRT, ++ UNW_Libgcc ++ }; ++ + enum RTTIMode { + RM_Enabled, + RM_Disabled, +@@ -352,6 +358,10 @@ public: + return ToolChain::CST_Libstdcxx; + } + ++ virtual UnwindLibType GetDefaultUnwindLibType() const { ++ return ToolChain::UNW_None; ++ } ++ + virtual std::string getCompilerRTPath() const; + + virtual std::string getCompilerRT(const llvm::opt::ArgList &Args, +@@ -484,6 +494,10 @@ public: + // given compilation arguments. + virtual CXXStdlibType GetCXXStdlibType(const llvm::opt::ArgList &Args) const; + ++ // GetUnwindLibType - Determine the unwind library type to use with the ++ // given compilation arguments. ++ virtual UnwindLibType GetUnwindLibType(const llvm::opt::ArgList &Args) const; ++ + /// AddClangCXXStdlibIncludeArgs - Add the clang -cc1 level arguments to set + /// the include paths to use for the given C++ standard library type. + virtual void +diff --git clang/lib/Driver/ToolChain.cpp clang/lib/Driver/ToolChain.cpp +index cf3db34688df..d980dd5d23fb 100644 +--- clang/lib/Driver/ToolChain.cpp ++++ clang/lib/Driver/ToolChain.cpp +@@ -665,6 +665,33 @@ ToolChain::RuntimeLibType ToolChain::GetRuntimeLibType( + return GetDefaultRuntimeLibType(); + } + ++ToolChain::UnwindLibType ToolChain::GetUnwindLibType( ++ const ArgList &Args) const { ++ const Arg *A = Args.getLastArg(options::OPT_unwindlib_EQ); ++ StringRef LibName = A ? A->getValue() : CLANG_DEFAULT_UNWINDLIB; ++ ++ if (LibName == "none") ++ return ToolChain::UNW_None; ++ else if (LibName == "platform" || LibName == "") { ++ ToolChain::RuntimeLibType RtLibType = GetRuntimeLibType(Args); ++ if (RtLibType == ToolChain::RLT_CompilerRT) ++ return ToolChain::UNW_None; ++ else if (RtLibType == ToolChain::RLT_Libgcc) ++ return ToolChain::UNW_Libgcc; ++ } else if (LibName == "libunwind") { ++ if (GetRuntimeLibType(Args) == RLT_Libgcc) ++ getDriver().Diag(diag::err_drv_incompatible_unwindlib); ++ return ToolChain::UNW_CompilerRT; ++ } else if (LibName == "libgcc") ++ return ToolChain::UNW_Libgcc; ++ ++ if (A) ++ getDriver().Diag(diag::err_drv_invalid_unwindlib_name) ++ << A->getAsString(Args); ++ ++ return GetDefaultUnwindLibType(); ++} ++ + ToolChain::CXXStdlibType ToolChain::GetCXXStdlibType(const ArgList &Args) const{ + const Arg *A = Args.getLastArg(options::OPT_stdlib_EQ); + StringRef LibName = A ? A->getValue() : CLANG_DEFAULT_CXX_STDLIB; +diff --git clang/test/Driver/compiler-rt-unwind.c clang/test/Driver/compiler-rt-unwind.c +new file mode 100644 +index 000000000000..00024dfa7ed3 +--- /dev/null ++++ clang/test/Driver/compiler-rt-unwind.c +@@ -0,0 +1,49 @@ ++// General tests that the driver handles combinations of --rtlib=XXX and ++// --unwindlib=XXX properly. ++// ++// RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \ ++// RUN: --target=x86_64-unknown-linux \ ++// RUN: --gcc-toolchain="" \ ++// RUN: | FileCheck --check-prefix=RTLIB-EMPTY %s ++// RTLIB-EMPTY: "{{.*}}lgcc" ++// RTLIB-EMPTY: "{{.*}}-lgcc_s" ++// ++// RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \ ++// RUN: --target=x86_64-unknown-linux -rtlib=libgcc \ ++// RUN: --gcc-toolchain="" \ ++// RUN: | FileCheck --check-prefix=RTLIB-GCC %s ++// RTLIB-GCC: "{{.*}}lgcc" ++// RTLIB-GCC: "{{.*}}lgcc_s" ++// ++// RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \ ++// RUN: --target=x86_64-unknown-linux -rtlib=libgcc --unwindlib=libunwind \ ++// RUN: --gcc-toolchain="" \ ++// RUN: | FileCheck --check-prefix=RTLIB-GCC-UNWINDLIB-COMPILER-RT %s ++// RTLIB-GCC-UNWINDLIB-COMPILER-RT: "{{.*}}lgcc" ++// RTLIB-GCC-UNWINDLIB-COMPILER-RT: "{{.*}}lunwind" ++// ++// RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \ ++// RUN: --target=x86_64-unknown-linux -rtlib=compiler-rt \ ++// RUN: --gcc-toolchain="" \ ++// RUN: | FileCheck --check-prefix=RTLIB-COMPILER-RT %s ++// RTLIB-COMPILER-RT: "{{.*}}libclang_rt.builtins-x86_64.a" ++// ++// RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \ ++// RUN: --target=x86_64-unknown-linux -rtlib=compiler-rt --unwindlib=libgcc \ ++// RUN: --gcc-toolchain="" \ ++// RUN: | FileCheck --check-prefix=RTLIB-COMPILER-RT-UNWINDLIB-GCC %s ++// RTLIB-COMPILER-RT-UNWINDLIB-GCC: "{{.*}}libclang_rt.builtins-x86_64.a" ++// RTLIB-COMPILER-RT-UNWINDLIB-GCC: "{{.*}}lgcc_s" ++// ++// RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \ ++// RUN: --target=x86_64-unknown-linux -rtlib=compiler-rt --unwindlib=libgcc \ ++// RUN: -static --gcc-toolchain="" \ ++// RUN: | FileCheck --check-prefix=RTLIB-COMPILER-RT-UNWINDLIB-GCC-STATIC %s ++// RTLIB-COMPILER-RT-UNWINDLIB-GCC-STATIC: "{{.*}}libclang_rt.builtins-x86_64.a" ++// RTLIB-COMPILER-RT-UNWINDLIB-GCC-STATIC: "{{.*}}lgcc_eh" ++// ++// RUN: not %clang -no-canonical-prefixes %s -o %t.o 2> %t.err \ ++// RUN: --target=x86_64-unknown-linux -rtlib=libgcc --unwindlib=libunwind \ ++// RUN: --gcc-toolchain="" \ ++// RUN: FileCheck --input-file=%t.err --check-prefix=RTLIB-GCC-UNWINDLIB-COMPILER_RT %s ++// RTLIB-GCC-UNWINDLIB-COMPILER_RT: "{{[.|\\\n]*}}--rtlib=libgcc requires --unwindlib=libgcc" |