2 files changed, 16 insertions, 9 deletions

diff --git a/src/shader_recompiler/ir_opt/dual_vertex_pass.cpp b/src/shader_recompiler/ir_opt/dual_vertex_pass.cpp
index b0a9f5258..a926123f2 100644
--- a/src/shader_recompiler/ir_opt/dual_vertex_pass.cpp
+++ b/src/shader_recompiler/ir_opt/dual_vertex_pass.cpp
@@ -13,16 +13,24 @@
 
 namespace Shader::Optimization {
 
-void VertexATransformPass(IR::Program&) {
-    throw NotImplementedException("VertexA pass");
+void VertexATransformPass(IR::Program& program) {
+  for (IR::Block* const block : program.blocks) {
+      for (IR::Inst& inst : block->Instructions()) {
+          if (inst.GetOpcode() == IR::Opcode::Epilogue) {
+              return inst.Invalidate();
+          }
+      }
+  }
 }
 
-void VertexBTransformPass(IR::Program&) {
-    throw NotImplementedException("VertexA pass");
-}
-
-void DualVertexJoinPass(IR::Program&) {
-    throw NotImplementedException("VertexA pass");
+void VertexBTransformPass(IR::Program& program) {
+  for (IR::Block* const block : program.blocks) {
+      for (IR::Inst& inst : block->Instructions()) {
+          if (inst.GetOpcode() == IR::Opcode::Prologue) {
+              return inst.Invalidate();
+          }
+      }
+  }
 }
 
 } // namespace Shader::Optimization
diff --git a/src/shader_recompiler/ir_opt/passes.h b/src/shader_recompiler/ir_opt/passes.h
index e9cb8546a..5ebde49ea 100644
--- a/src/shader_recompiler/ir_opt/passes.h
+++ b/src/shader_recompiler/ir_opt/passes.h
@@ -25,7 +25,6 @@ void VerificationPass(const IR::Program& program);
 // Dual Vertex
 void VertexATransformPass(IR::Program& program);
 void VertexBTransformPass(IR::Program& program);
-void DualVertexJoinPass(IR::Program& program);
 void JoinTextureInfo(Info& base, Info& source);
 void JoinStorageInfo(Info& base, Info& source);