[SPIRV] Add processing SPIR-V metadata.

Add translation of SPIR 1.2/2.0 metadata to SPIR-V metadata
Fix OpExtension/OpSourceExtension to have one extension string instead of spaced separated multiple extension strings in each instruction.
Fix OpExecutionMode for ExecutionModeVectorTypeHint to use encoding instead of type id/string.
Fix bug about reading empty string in text format SPIR-V.
Allow llvm_spirv to use -o - for output to stdout.
Fix OpEntryPoint to add name of entry pointer function.

1 files changed, 4 insertions, 2 deletions

diff --git a/tools/llvm-spirv/llvm-spirv.cpp b/tools/llvm-spirv/llvm-spirv.cpp
index 604e268..0c19d83 100644
--- a/tools/llvm-spirv/llvm-spirv.cpp
+++ b/tools/llvm-spirv/llvm-spirv.cpp
@@ -142,8 +142,10 @@ convertLLVMToSPIRV() {
       OutputFile = removeExt(InputFile) + kExt::SpirvBinary;

   }

 

-  std::ofstream OFS(OutputFile, std::ios::binary);

-  if (!WriteSPIRV(M.get(), OFS, Err)) {

+  std::ofstream OFS;

+  std::ostream *OS = OutputFile == "-" ? &std::cout :

+      (OFS.open(OutputFile, std::ios::binary), &OFS);

+  if (!WriteSPIRV(M.get(), *OS, Err)) {

     errs() << "Fails to save LLVM as SPIRV: " << Err << '\n';

     return -1;

   }