Add --print-all optimizer option

Adds optimizer API to write disassembly to a given output stream
before each pass, and after the last pass.

Adds spirv-opt --print-all option to write disassembly to stderr
before each pass, and after the last pass.

1 files changed, 6 insertions, 0 deletions

diff --git a/include/spirv-tools/optimizer.hpp b/include/spirv-tools/optimizer.hpp
index afc544a5..2141bda4 100644
--- a/include/spirv-tools/optimizer.hpp
+++ b/include/spirv-tools/optimizer.hpp
@@ -16,6 +16,7 @@
 #define SPIRV_TOOLS_OPTIMIZER_HPP_
 
 #include <memory>
+#include <ostream>
 #include <string>
 #include <unordered_map>
 #include <vector>
@@ -113,6 +114,11 @@ class Optimizer {
   // pass manager is destroyed.
   std::vector<const char*> GetPassNames() const;
 
+  // Sets the option to print the disassembly before each pass and after the
+  // last pass.  If |out| is null, then no output is generated.  Otherwise,
+  // output is sent to the |out| output stream.
+  Optimizer& SetPrintAll(std::ostream* out);
+
  private:
   struct Impl;                  // Opaque struct for holding internal data.
   std::unique_ptr<Impl> impl_;  // Unique pointer to internal data.