[Beignet] [PATCH] backend/src/backend: Handle -dump-opt-llvm=[PATH]

[Song, Ruiling]

LGTM

Thanks!
Ruiling

> -----Original Message-----
> From: Navare, Manasi D
> Sent: Monday, August 3, 2015 6:37 PM
> To: Song, Ruiling; beignet at lists.freedesktop.org
> Cc: Ekstrand, Laura D; Navare, Manasi D
> Subject: [PATCH] backend/src/backend: Handle -dump-opt-llvm=[PATH]
> 
> From: Laura Ekstrand <laura.d.ekstrand at intel.com>
> 
> Allows the user to request a dump of the LLVM-generated IR to the file specified
> in [PATH].
> 
> Signed-off-by: Manasi Navare <manasi.d.navare at intel.com>
> ---
>  backend/src/backend/program.cpp | 37
> ++++++++++++++++++++++++++++++++++---
>  1 file changed, 34 insertions(+), 3 deletions(-)
> 
> diff --git a/backend/src/backend/program.cpp
> b/backend/src/backend/program.cpp index e4cdeaa..a9b5ff5 100644
> --- a/backend/src/backend/program.cpp
> +++ b/backend/src/backend/program.cpp
> @@ -640,6 +640,7 @@ namespace gbe {
>                                       const char *options,
>                                       const char *temp_header_path,
>                                       std::vector<std::string>& clOpt,
> +                                     std::string& dumpLLVMFileName,
>                                       std::string& clName,
>                                       int& optLevel,
>                                       size_t stringSize, @@ -719,6 +720,11 @@ namespace gbe {
>            clOpt.push_back("__FAST_RELAXED_MATH__=1");
>          }
> 
> +        if(str.find("-dump-opt-llvm=") != std::string::npos) {
> +          dumpLLVMFileName = str.substr(str.find("=") + 1);
> +          continue; // Don't push this str back; ignore it.
> +        }
> +
>          clOpt.push_back(str);
>        }
>        free(str);
> @@ -781,8 +787,10 @@ namespace gbe {
>      int optLevel = 1;
>      std::vector<std::string> clOpt;
>      std::string clName;
> -    if (!processSourceAndOption(source, options, NULL, clOpt, clName,
> -                                optLevel, stringSize, err, errSize))
> +    std::string dumpLLVMFileName;
> +    if (!processSourceAndOption(source, options, NULL, clOpt,
> +                                dumpLLVMFileName, clName, optLevel,
> +                                stringSize, err, errSize))
>        return NULL;
> 
>      gbe_program p;
> @@ -804,6 +812,27 @@ namespace gbe {
>          clangErrSize = *errSize;
>        }
> 
> +      // Dump the LLVM if requested.
> +      #if (LLVM_VERSION_MAJOR == 3) && (LLVM_VERSION_MINOR < 6)
> +      if (!dumpLLVMFileName.empty()) {
> +        std::string err;
> +        llvm::raw_fd_ostream ostream (dumpLLVMFileName.c_str(),
> +                                      err, llvm::sys::fs::F_RW);
> +        if (err.empty()) {
> +          out_module->print(ostream, 0);
> +        } //Otherwise, you'll have to make do without the dump.
> +      }
> +      #else
> +      if (!dumpLLVMFileName.empty()) {
> +        std::error_code err;
> +        llvm::raw_fd_ostream ostream (dumpLLVMFileName.c_str(),
> +                                      err, llvm::sys::fs::F_RW);
> +        if (!err.bool()) {
> +          out_module->print(ostream, 0);
> +        } //Otherwise, you'll have to make do without the dump.
> +      }
> +      #endif
> +
>        p = gbe_program_new_from_llvm(deviceID, NULL, out_module, llvm_ctx,
> stringSize,
>                                      err, errSize, optLevel);
>        if (err != NULL)
> @@ -834,7 +863,9 @@ namespace gbe {
>      int optLevel = 1;
>      std::vector<std::string> clOpt;
>      std::string clName;
> -    if (!processSourceAndOption(source, options, temp_header_path, clOpt,
> clName,
> +    std::string dumpLLVMFileName;
> +    if (!processSourceAndOption(source, options, temp_header_path, clOpt,
> +                                dumpLLVMFileName, clName,
>                                  optLevel, stringSize, err, errSize))
>        return NULL;
> 
> --
> 1.9.1