[Mesa-dev] [PATCH v4] clover: restore support for LLVM <= 3.9

[Vinson Lee]

On Fri, Nov 18, 2016 at 10:57 AM, Vedran Miletić <vedran at miletic.net> wrote:
> The commit 8e430ff8b060b4e8e922bae24b3c57837da6ea77 support for LLVM
> 3.9 and older versionsin  Clover. This patch restores it and refactors
> the support using Clover compatibility layer for LLVM.
>
> Signed-off-by: Vedran Miletić <vedran at miletic.net>
> ---
>  .../state_trackers/clover/llvm/codegen/bitcode.cpp |  9 ++----
>  src/gallium/state_trackers/clover/llvm/compat.hpp  | 35 ++++++++++++++++++++++
>  2 files changed, 37 insertions(+), 7 deletions(-)
>
> diff --git a/src/gallium/state_trackers/clover/llvm/codegen/bitcode.cpp b/src/gallium/state_trackers/clover/llvm/codegen/bitcode.cpp
> index 5dcc4f8..4b4ae41 100644
> --- a/src/gallium/state_trackers/clover/llvm/codegen/bitcode.cpp
> +++ b/src/gallium/state_trackers/clover/llvm/codegen/bitcode.cpp
> @@ -32,6 +32,7 @@
>  ///
>
>  #include "llvm/codegen.hpp"
> +#include "llvm/compat.hpp"
>  #include "llvm/metadata.hpp"
>  #include "core/error.hpp"
>  #include "util/algorithm.hpp"
> @@ -99,13 +100,7 @@ clover::llvm::parse_module_library(const module &m, ::llvm::LLVMContext &ctx,
>     auto mod = ::llvm::parseBitcodeFile(::llvm::MemoryBufferRef(
>                                          as_string(m.secs[0].data), " "), ctx);
>
> -   if (::llvm::Error err = mod.takeError()) {
> -      std::string msg;
> -      ::llvm::handleAllErrors(std::move(err), [&](::llvm::ErrorInfoBase &EIB) {
> -         msg = EIB.message();
> -         fail(r_log, error(CL_INVALID_PROGRAM), msg.c_str());
> -      });
> -   }
> +   compat::handle_module_error(mod, r_log);
>
>     return std::unique_ptr<::llvm::Module>(std::move(*mod));
>  }
> diff --git a/src/gallium/state_trackers/clover/llvm/compat.hpp b/src/gallium/state_trackers/clover/llvm/compat.hpp
> index a963cff..b29100f 100644
> --- a/src/gallium/state_trackers/clover/llvm/compat.hpp
> +++ b/src/gallium/state_trackers/clover/llvm/compat.hpp
> @@ -39,6 +39,11 @@
>  #include <llvm/Linker/Linker.h>
>  #include <llvm/Transforms/IPO.h>
>  #include <llvm/Target/TargetMachine.h>
> +#if HAVE_LLVM >= 0x0400
> +#include <llvm/Support/Error.h>
> +#else
> +#include <llvm/Support/ErrorOr.h>
> +#endif
>
>  #if HAVE_LLVM >= 0x0307
>  #include <llvm/IR/LegacyPassManager.h>
> @@ -53,6 +58,14 @@
>  #include <clang/Frontend/CodeGenOptions.h>
>  #include <clang/Frontend/CompilerInstance.h>
>
> +#if HAVE_LLVM >= 0x0307
> +#include <memory>
> +#endif
> +
> +namespace llvm {
> +   class Module;
> +}
> +
>  namespace clover {
>     namespace llvm {
>        namespace compat {
> @@ -158,6 +171,28 @@ namespace clover {
>  #else
>           const auto default_reloc_model = ::llvm::Reloc::Default;
>  #endif
> +
> +#if HAVE_LLVM >= 0x0400
> +         typedef ::llvm::Expected<std::unique_ptr<::llvm::Module>> bitcode_module;
> +#elif HAVE_LLVM >= 0x0307
> +         typedef ::llvm::ErrorOr<std::unique_ptr<::llvm::Module>> bitcode_module;
> +#else
> +         typedef ::llvm::ErrorOr<::llvm::Module *> bitcode_module;
> +#endif
> +
> +         inline void
> +         handle_module_error(bitcode_module &mod, std::string &r_log) {
> +#if HAVE_LLVM >= 0x0400
> +            if (::llvm::Error err = mod.takeError()) {
> +               ::llvm::handleAllErrors(std::move(err), [&](::llvm::ErrorInfoBase &EIB) {
> +                  fail(r_log, error(CL_INVALID_PROGRAM), EIB.message().c_str());
> +               });
> +            }
> +#else
> +            if (!mod)
> +               fail(r_log, error(CL_INVALID_PROGRAM), mod.getError().message());
> +#endif
> +         }
>        }
>     }
>  }
> --
> 2.7.4
>

This patch fixes builds with llvm-3.8.

Tested-by: Vinson Lee <vlee at freedesktop.org>