[lld] r294498 - [COFF] added support for /lldsavetemps
Yung, Douglas via llvm-commits
llvm-commits at lists.llvm.org
Wed Feb 8 18:18:22 PST 2017
Hi Bob,
I don't know if you are aware, but your change is causing the PS4 Windows bot to fail (http://lab.llvm.org:8011/builders/llvm-clang-lld-x86_64-scei-ps4-windows10pro-fast/builds/5144) on the test you added. The error given is:
$ "rm" "-f" "C:\Buildbot\Slave\llvm-clang-lld-x86_64-scei-ps4-windows10pro-fast\llvm.obj\tools\lld\test\COFF\Output/savetemps.*"
# command stderr:
rm: cannot remove `C:\\Buildbot\\Slave\\llvm-clang-lld-x86_64-scei-ps4-windows10pro-fast\\llvm.obj\\tools\\lld\\test\\COFF\\Output/savetemps.*': Invalid argument
error: command failed with exit status: 1
Can you investigate?
Douglas Yung
> -----Original Message-----
> From: llvm-commits [mailto:llvm-commits-bounces at lists.llvm.org] On Behalf Of
> Bob Haarman via llvm-commits
> Sent: Wednesday, February 08, 2017 10:37
> To: llvm-commits at lists.llvm.org
> Subject: [lld] r294498 - [COFF] added support for /lldsavetemps
>
> Author: inglorion
> Date: Wed Feb 8 12:36:41 2017
> New Revision: 294498
>
> URL: http://llvm.org/viewvc/llvm-project?rev=294498&view=rev
> Log:
> [COFF] added support for /lldsavetemps
>
> Summary: This adds an option to save temporary files generated during link-
> time optimization. This can be useful for debugging.
>
> Reviewers: ruiu, pcc
>
> Reviewed By: ruiu, pcc
>
> Subscribers: mehdi_amini
>
> Differential Revision: https://reviews.llvm.org/D29518
>
> Added:
> lld/trunk/test/COFF/savetemps.ll
> Modified:
> lld/trunk/COFF/Config.h
> lld/trunk/COFF/Driver.cpp
> lld/trunk/COFF/LTO.cpp
> lld/trunk/COFF/Options.td
>
> Modified: lld/trunk/COFF/Config.h
> URL: http://llvm.org/viewvc/llvm-
> project/lld/trunk/COFF/Config.h?rev=294498&r1=294497&r2=294498&view=diff
> ==============================================================================
> --- lld/trunk/COFF/Config.h (original)
> +++ lld/trunk/COFF/Config.h Wed Feb 8 12:36:41 2017
> @@ -105,6 +105,8 @@ struct Configuration {
> std::map<std::string, int> DLLOrder;
> SymbolBody *DelayLoadHelper = nullptr;
>
> + bool SaveTemps = false;
> +
> // Used for SafeSEH.
> Symbol *SEHTable = nullptr;
> Symbol *SEHCount = nullptr;
>
> Modified: lld/trunk/COFF/Driver.cpp
> URL: http://llvm.org/viewvc/llvm-
> project/lld/trunk/COFF/Driver.cpp?rev=294498&r1=294497&r2=294498&view=diff
> ==============================================================================
> --- lld/trunk/COFF/Driver.cpp (original)
> +++ lld/trunk/COFF/Driver.cpp Wed Feb 8 12:36:41 2017
> @@ -622,6 +622,10 @@ void LinkerDriver::link(ArrayRef<const c
> }
> }
>
> + // Handle /lldsavetemps
> + if (Args.hasArg(OPT_lldsavetemps))
> + Config->SaveTemps = true;
> +
> // Handle /failifmismatch
> for (auto *Arg : Args.filtered(OPT_failifmismatch))
> checkFailIfMismatch(Arg->getValue());
>
> Modified: lld/trunk/COFF/LTO.cpp
> URL: http://llvm.org/viewvc/llvm-
> project/lld/trunk/COFF/LTO.cpp?rev=294498&r1=294497&r2=294498&view=diff
> ==============================================================================
> --- lld/trunk/COFF/LTO.cpp (original)
> +++ lld/trunk/COFF/LTO.cpp Wed Feb 8 12:36:41 2017
> @@ -54,6 +54,14 @@ static void checkError(Error E) {
> });
> }
>
> +static void saveBuffer(StringRef Buffer, const Twine &Path) {
> + std::error_code EC;
> + raw_fd_ostream OS(Path.str(), EC, sys::fs::OpenFlags::F_None);
> + if (EC)
> + error("cannot create " + Path + ": " + EC.message());
> + OS << Buffer;
> +}
> +
> static std::unique_ptr<lto::LTO> createLTO() {
> lto::Config Conf;
> Conf.Options = InitTargetOptionsFromCodeGenFlags();
> @@ -61,6 +69,9 @@ static std::unique_ptr<lto::LTO> createL
> Conf.DisableVerify = true;
> Conf.DiagHandler = diagnosticHandler;
> Conf.OptLevel = Config->LTOOptLevel;
> + if (Config->SaveTemps)
> + checkError(Conf.addSaveTemps(std::string(Config->OutputFile) + ".",
> + /*UseInputModulePath*/ true));
> lto::ThinBackend Backend;
> if (Config->LTOJobs != -1u)
> Backend = lto::createInProcessThinBackend(Config->LTOJobs);
> @@ -116,8 +127,16 @@ std::vector<StringRef> BitcodeCompiler::
> }));
>
> std::vector<StringRef> Ret;
> - for (unsigned I = 0; I != MaxTasks; ++I)
> - if (!Buff[I].empty())
> - Ret.emplace_back(Buff[I].data(), Buff[I].size());
> + for (unsigned I = 0; I != MaxTasks; ++I) {
> + if (Buff[I].empty())
> + continue;
> + if (Config->SaveTemps) {
> + if (I == 0)
> + saveBuffer(Buff[I], Config->OutputFile + ".lto.obj");
> + else
> + saveBuffer(Buff[I], Config->OutputFile + Twine(I) + ".lto.obj");
> + }
> + Ret.emplace_back(Buff[I].data(), Buff[I].size()); }
> return Ret;
> }
>
> Modified: lld/trunk/COFF/Options.td
> URL: http://llvm.org/viewvc/llvm-
> project/lld/trunk/COFF/Options.td?rev=294498&r1=294497&r2=294498&view=diff
> ==============================================================================
> --- lld/trunk/COFF/Options.td (original)
> +++ lld/trunk/COFF/Options.td Wed Feb 8 12:36:41 2017
> @@ -28,6 +28,8 @@ def heap : P<"heap", "Size of the hea
> def implib : P<"implib", "Import library name">; def libpath : P<"libpath",
> "Additional library search path">; def linkrepro : P<"linkrepro", "Dump
> linker invocation and input files for debugging">;
> +def lldsavetemps : F<"lldsavetemps">,
> + HelpText<"Save temporary files instead of deleting them">;
> def machine : P<"machine", "Specify target platform">;
> def merge : P<"merge", "Combine sections">;
> def mllvm : P<"mllvm", "Options to pass to LLVM">;
>
> Added: lld/trunk/test/COFF/savetemps.ll
> URL: http://llvm.org/viewvc/llvm-
> project/lld/trunk/test/COFF/savetemps.ll?rev=294498&view=auto
> ==============================================================================
> --- lld/trunk/test/COFF/savetemps.ll (added)
> +++ lld/trunk/test/COFF/savetemps.ll Wed Feb 8 12:36:41 2017
> @@ -0,0 +1,24 @@
> +; RUN: rm -f %T/savetemps.*
> +; RUN: llvm-as -o %T/savetemps.obj %s
> +; RUN: lld-link /out:%T/savetemps.exe /entry:main /subsystem:console
> +%T/savetemps.obj ; RUN: not llvm-dis -o -
> +%T/savetemps.exe.0.0.preopt.bc ; RUN: not llvm-dis -o -
> +%T/savetemps.exe.0.2.internalize.bc
> +; RUN: not llvm-dis -o - %T/savetemps.exe.0.4.opt.bc ; RUN: not
> +llvm-dis -o - %T/savetemps.exe.0.5.precodegen.bc
> +; RUN: not llvm-objdump -s %T/savetemps.exe.lto.obj ; RUN: lld-link
> +/lldsavetemps /out:%T/savetemps.exe /entry:main /subsystem:console
> +%T/savetemps.obj ; RUN: llvm-dis -o - %T/savetemps.exe.0.0.preopt.bc |
> +FileCheck %s ; RUN: llvm-dis -o - %T/savetemps.exe.0.2.internalize.bc |
> +FileCheck %s ; RUN: llvm-dis -o - %T/savetemps.exe.0.4.opt.bc |
> +FileCheck %s ; RUN: llvm-dis -o - %T/savetemps.exe.0.5.precodegen.bc |
> +FileCheck %s ; RUN: llvm-objdump -s %T/savetemps.exe.lto.obj |
> +FileCheck --check-prefix=CHECK-OBJDUMP %s
> +
> +; CHECK: define i32 @main()
> +; CHECK-OBJDUMP: file format COFF
> +
> +target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
> +target triple = "x86_64-pc-windows-msvc"
> +
> +define i32 @main() {
> + ret i32 0
> +}
>
>
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