[MLIR][NFC] Retire let constructor for passes in Conversion directory (part1) (#127403)

`let constructor` is deprecated since the table gen backend emits most
of the glue logic to build a pass. This PR retires the td method for
most (I need another pass) passes in the Conversion directory.

Author: chelini

flang/include/flang/Optimizer/Support/InitFIR.h

@@ -112,7 +112,7 @@ inline void registerMLIRPassesForFortranTools() {
   mlir::affine::registerAffineLoopTilingPass();
   mlir::affine::registerAffineDataCopyGenerationPass();
 
-  mlir::registerConvertAffineToStandardPass();
+  mlir::registerLowerAffinePass();
 }
 
 /// Register the interfaces needed to lower to LLVM IR.

flang/lib/Optimizer/Passes/Pipelines.cpp

@@ -205,7 +205,7 @@ void createDefaultFIROptimizerPassPipeline(mlir::PassManager &pm,
       pm, fir::createStackReclaim);
   // convert control flow to CFG form
   fir::addCfgConversionPass(pm, pc);
-  pm.addPass(mlir::createConvertSCFToCFPass());
+  pm.addPass(mlir::createSCFToControlFlowPass());
 
   pm.addPass(mlir::createCanonicalizerPass(config));
   pm.addPass(fir::createSimplifyRegionLite());

mlir/include/mlir/Conversion/AMDGPUToROCDL/AMDGPUToROCDL.h

@@ -18,7 +18,7 @@ class LLVMTypeConverter;
 class RewritePatternSet;
 class Pass;
 
-#define GEN_PASS_DECL_CONVERTAMDGPUTOROCDL
+#define GEN_PASS_DECL_CONVERTAMDGPUTOROCDLPASS
 #include "mlir/Conversion/Passes.h.inc"
 
 /// Note: The ROCDL target does not support the LLVM bfloat type at this time
@@ -28,8 +28,6 @@ void populateAMDGPUToROCDLConversionPatterns(const LLVMTypeConverter &converter,
                                              RewritePatternSet &patterns,
                                              amdgpu::Chipset chipset);
 
-std::unique_ptr<Pass> createConvertAMDGPUToROCDLPass();
-
 } // namespace mlir
 
 #endif // MLIR_CONVERSION_AMDGPUTOROCDL_AMDGPUTOROCDL_H_

mlir/include/mlir/Conversion/AffineToStandard/AffineToStandard.h

@@ -24,7 +24,7 @@ namespace affine {
 class AffineForOp;
 } // namespace affine
 
-#define GEN_PASS_DECL_CONVERTAFFINETOSTANDARD
+#define GEN_PASS_DECL_LOWERAFFINEPASS
 #include "mlir/Conversion/Passes.h.inc"
 
 /// Collect a set of patterns to convert from the Affine dialect to the Standard
@@ -44,11 +44,6 @@ Value lowerAffineLowerBound(affine::AffineForOp op, OpBuilder &builder);
 /// standard arithmetic operations.
 Value lowerAffineUpperBound(affine::AffineForOp op, OpBuilder &builder);
 
-/// Lowers affine control flow operations (ForStmt, IfStmt and AffineApplyOp)
-/// to equivalent lower-level constructs (flow of basic blocks and arithmetic
-/// primitives).
-std::unique_ptr<Pass> createLowerAffinePass();
-
 } // namespace mlir
 
 #endif // MLIR_CONVERSION_AFFINETOSTANDARD_AFFINETOSTANDARD_H

mlir/include/mlir/Conversion/ArithToSPIRV/ArithToSPIRV.h

@@ -18,7 +18,7 @@ class SPIRVTypeConverter;
 class RewritePatternSet;
 class Pass;
 
-#define GEN_PASS_DECL_CONVERTARITHTOSPIRV
+#define GEN_PASS_DECL_CONVERTARITHTOSPIRVPASS
 #include "mlir/Conversion/Passes.h.inc"
 
 namespace arith {

mlir/include/mlir/Conversion/ArmNeon2dToIntr/ArmNeon2dToIntr.h

@@ -15,18 +15,13 @@ namespace mlir {
 class Pass;
 class RewritePatternSet;
 
-#define GEN_PASS_DECL_CONVERTARMNEON2DTOINTR
+#define GEN_PASS_DECL_CONVERTARMNEON2DTOINTRPASS
 #include "mlir/Conversion/Passes.h.inc"
 
 /// Populates patterns for the lowering of Arm NEON 2D ops to intrinsics.
 /// See createConvertArmNeon2dToIntrPass.
 void populateConvertArmNeon2dToIntrPatterns(RewritePatternSet &patterns);
 
-/// Creates a pass to lower Arm NEON 2D ops to intrinsics, i.e.
-/// equivalent ops operating on flattened 1D vectors and mapping more
-/// directly to the corresponding Arm NEON instruction.
-std::unique_ptr<Pass> createConvertArmNeon2dToIntrPass();
-
 } // namespace mlir
 
 #endif // MLIR_CONVERSION_ARMNEON2DTOINTR_ARMNEON2DTOINTR_H_

mlir/include/mlir/Conversion/ArmSMEToSCF/ArmSMEToSCF.h

@@ -15,15 +15,12 @@ namespace mlir {
 class Pass;
 class RewritePatternSet;
 
-#define GEN_PASS_DECL_CONVERTARMSMETOSCF
+#define GEN_PASS_DECL_CONVERTARMSMETOSCFPASS
 #include "mlir/Conversion/Passes.h.inc"
 
 /// Collect a set of patterns to convert from the ArmSME dialect to SCF.
 void populateArmSMEToSCFConversionPatterns(RewritePatternSet &patterns);
 
-/// Create a pass to convert a subset of ArmSME ops to SCF.
-std::unique_ptr<Pass> createConvertArmSMEToSCFPass();
-
 } // namespace mlir
 
 #endif // MLIR_CONVERSION_ARMSMETOSCF_ARMSMETOSCF_H_

mlir/include/mlir/Conversion/BufferizationToMemRef/BufferizationToMemRef.h

@@ -15,10 +15,9 @@
 namespace mlir {
 class ModuleOp;
 
-#define GEN_PASS_DECL_CONVERTBUFFERIZATIONTOMEMREF
+#define GEN_PASS_DECL_CONVERTBUFFERIZATIONTOMEMREFPASS
 #include "mlir/Conversion/Passes.h.inc"
 
-std::unique_ptr<Pass> createBufferizationToMemRefPass();
 } // namespace mlir
 
 #endif // MLIR_CONVERSION_BUFFERIZATIONTOMEMREF_BUFFERIZATIONTOMEMREF_H

mlir/include/mlir/Conversion/ComplexToLibm/ComplexToLibm.h

@@ -8,6 +8,7 @@
 #ifndef MLIR_CONVERSION_COMPLEXTOLIBM_COMPLEXTOLIBM_H_
 #define MLIR_CONVERSION_COMPLEXTOLIBM_COMPLEXTOLIBM_H_
 
+#include "mlir/Pass/Pass.h"
 #include "mlir/Transforms/DialectConversion.h"
 
 namespace mlir {
@@ -22,9 +23,6 @@ class OperationPass;
 void populateComplexToLibmConversionPatterns(RewritePatternSet &patterns,
                                              PatternBenefit benefit);
 
-/// Create a pass to convert Complex operations to libm calls.
-std::unique_ptr<OperationPass<ModuleOp>> createConvertComplexToLibmPass();
-
 } // namespace mlir
 
 #endif // MLIR_CONVERSION_COMPLEXTOLIBM_COMPLEXTOLIBM_H_

mlir/include/mlir/Conversion/ComplexToStandard/ComplexToStandard.h

@@ -16,7 +16,7 @@ namespace mlir {
 class RewritePatternSet;
 class Pass;
 
-#define GEN_PASS_DECL_CONVERTCOMPLEXTOSTANDARD
+#define GEN_PASS_DECL_CONVERTCOMPLEXTOSTANDARDPASS
 #include "mlir/Conversion/Passes.h.inc"
 
 /// Populate the given list with patterns that convert from Complex to Standard.
@@ -25,11 +25,6 @@ void populateComplexToStandardConversionPatterns(
     mlir::complex::ComplexRangeFlags complexRange =
         mlir::complex::ComplexRangeFlags::improved);
 
-/// Create a pass to convert Complex operations to the Standard dialect.
-std::unique_ptr<Pass> createConvertComplexToStandardPass();
-std::unique_ptr<Pass>
-createConvertComplexToStandardPass(ConvertComplexToStandardOptions options);
-
 } // namespace mlir
 
 #endif // MLIR_CONVERSION_COMPLEXTOSTANDARD_COMPLEXTOSTANDARD_H_