getStringHash on string literals (#1140)

* WIP getStringHash

* Have a use.

* Add slang-string-hash.h/.cpp

* Use StringSlicePool for holding strings for StringHash.
Add outputBuffer to string-literal-hash.slang so value can be tested.
Ignore the GlobalHashedStringLiterals instruction on emit.

* Add all the hashed string literals to ProgramLayout.

* Add reflection support for hashed string literals to reflection test.

* Fix string literal hash test.

* Small fixes to pass test suite.

* Fix issue in serialization where IRUse is not correctly initialized.

* Fix problem initializing IRUse for string hash pass.
Remove hack from slang-ir-specialize - specially handling if user is not null.

* * Use shared builder when replacing getStringHash
* Comments for functions in slang-ir-string-hash
* Do not allow zero length string literals. Could be allowed, but doing so would require StringSlicePool to have a special case (or some other mechanism)

1 files changed, 7 insertions, 0 deletions

diff --git a/source/slang/slang-parameter-binding.cpp b/source/slang/slang-parameter-binding.cpp
index 5ea81c809..9e11152c4 100644
--- a/source/slang/slang-parameter-binding.cpp
+++ b/source/slang/slang-parameter-binding.cpp
@@ -5,6 +5,8 @@
 #include "slang-compiler.h"
 #include "slang-type-layout.h"
 
+#include "slang-ir-string-hash.h"
+
 #include "../../slang.h"
 
 namespace Slang {
@@ -2974,6 +2976,11 @@ RefPtr<ProgramLayout> generateParameterBindings(
     RefPtr<ProgramLayout> programLayout = new ProgramLayout();
     programLayout->targetProgram = targetProgram;
 
+    {
+        auto& pool = programLayout->hashedStringLiteralPool;
+        program->enumerateIRModules([&](IRModule* module) { findGlobalHashedStringLiterals(module, pool); });
+    }
+
     // Try to find rules based on the selected code-generation target
     auto layoutContext = getInitialLayoutContextForTarget(targetReq, programLayout);