[flang][NFC] Use tablegen to reduce AddAliasTags boilerplate

[tblah]

I will make this pass run properly on more top-level operations in a follow up patch.

[llvmbot]

@llvm/pr-subscribers-flang-fir-hlfir

Author: Tom Eccles (tblah)

Changes

I will make this pass run properly on more top-level operations in a follow up patch.

---

Full diff: https://github.com/llvm/llvm-project/pull/92373.diff

4 Files Affected:

• (modified) flang/include/flang/Optimizer/Transforms/Passes.h (+1-1)
• (modified) flang/include/flang/Optimizer/Transforms/Passes.td (-1)
• (modified) flang/include/flang/Tools/CLOptions.inc (+1-1)
• (modified) flang/lib/Optimizer/Transforms/AddAliasTags.cpp (-4)

diff --git a/flang/include/flang/Optimizer/Transforms/Passes.h b/flang/include/flang/Optimizer/Transforms/Passes.h
index 25fe61488f4f6..e40e2faed5335 100644
--- a/flang/include/flang/Optimizer/Transforms/Passes.h
+++ b/flang/include/flang/Optimizer/Transforms/Passes.h
@@ -49,6 +49,7 @@ namespace fir {
 #define GEN_PASS_DECL_ADDDEBUGINFO
 #define GEN_PASS_DECL_STACKARRAYS
 #define GEN_PASS_DECL_LOOPVERSIONING
+#define GEN_PASS_DECL_ADDALIASTAGS
 #include "flang/Optimizer/Transforms/Passes.h.inc"
 
 std::unique_ptr<mlir::Pass> createAffineDemotionPass();
@@ -60,7 +61,6 @@ std::unique_ptr<mlir::Pass>
 createExternalNameConversionPass(bool appendUnderscore);
 std::unique_ptr<mlir::Pass> createMemDataFlowOptPass();
 std::unique_ptr<mlir::Pass> createPromoteToAffinePass();
-std::unique_ptr<mlir::Pass> createAliasTagsPass();
 std::unique_ptr<mlir::Pass>
 createAddDebugInfoPass(fir::AddDebugInfoOptions options = {});
 
diff --git a/flang/include/flang/Optimizer/Transforms/Passes.td b/flang/include/flang/Optimizer/Transforms/Passes.td
index 622c9465754c7..28420a8b3f70c 100644
--- a/flang/include/flang/Optimizer/Transforms/Passes.td
+++ b/flang/include/flang/Optimizer/Transforms/Passes.td
@@ -278,7 +278,6 @@ def AddAliasTags : Pass<"fir-add-alias-tags", "mlir::ModuleOp"> {
     aren't races adding new tags to the mlir context.
   }];
   let dependentDialects = [ "fir::FIROpsDialect" ];
-  let constructor = "::fir::createAliasTagsPass()";
 }
 
 def SimplifyRegionLite : Pass<"simplify-region-lite", "mlir::ModuleOp"> {
diff --git a/flang/include/flang/Tools/CLOptions.inc b/flang/include/flang/Tools/CLOptions.inc
index 9c4a30dcf3019..61e591f2086df 100644
--- a/flang/include/flang/Tools/CLOptions.inc
+++ b/flang/include/flang/Tools/CLOptions.inc
@@ -294,7 +294,7 @@ inline void createDefaultFIROptimizerPassPipeline(
   pm.addPass(fir::createPolymorphicOpConversion());
 
   if (pc.AliasAnalysis && !disableFirAliasTags && !useOldAliasTags)
-    pm.addPass(fir::createAliasTagsPass());
+    pm.addPass(fir::createAddAliasTags());
 
   // convert control flow to CFG form
   fir::addCfgConversionPass(pm, pc);
diff --git a/flang/lib/Optimizer/Transforms/AddAliasTags.cpp b/flang/lib/Optimizer/Transforms/AddAliasTags.cpp
index 3642a812096db..4724c3ce75328 100644
--- a/flang/lib/Optimizer/Transforms/AddAliasTags.cpp
+++ b/flang/lib/Optimizer/Transforms/AddAliasTags.cpp
@@ -224,7 +224,3 @@ void AddAliasTagsPass::runOnOperation() {
 
   LLVM_DEBUG(llvm::dbgs() << "=== End " DEBUG_TYPE " ===\n");
 }
-
-std::unique_ptr<mlir::Pass> fir::createAliasTagsPass() {
-  return std::make_unique<AddAliasTagsPass>();
-}

[jeanPerier]

Thanks, CI failure seems unrelated (windows compiler ran out of heap space).