[MLIR][AMDGPU] Clean up and redo after other recent patches here.

Author: pcf000

mlir/include/mlir/Dialect/AMDGPU/Utils/Chipset.h

@@ -49,10 +49,10 @@ struct Chipset {
 #undef DEFINE_COMP_OPERATOR
 
   bool isGfx940() const {
-    return majorVersion == 9 && minorVersion >= 0x40 && minorVersion < 0x50;
+    return majorVersion == 9 && minorVersion >= 4 && minorVersion < 5;
   }
   bool hasOcpFp8() const {
-    return (majorVersion == 9 && minorVersion >= 0x50) || majorVersion >= 12;
+    return (majorVersion == 9 && minorVersion >= 5) || majorVersion >= 12;
   }
 };
 

mlir/lib/Conversion/AMDGPUToROCDL/AMDGPUToROCDL.cpp

@@ -771,7 +771,7 @@ LogicalResult ExtPackedFp8OpLowering::matchAndRewrite(
     ExtPackedFp8Op op, ExtPackedFp8OpAdaptor adaptor,
     ConversionPatternRewriter &rewriter) const {
   Location loc = op.getLoc();
-  if (chipset.majorVersion != 9 || chipset < kGfx940)
+  if (!(chipset.isGfx940() || chipset.hasOcpFp8()))
     return rewriter.notifyMatchFailure(
         loc, "Fp8 conversion instructions are not available on target "
              "architecture and their emulation is not implemented");
@@ -815,7 +815,7 @@ LogicalResult PackedTrunc2xFp8OpLowering::matchAndRewrite(
     PackedTrunc2xFp8Op op, PackedTrunc2xFp8OpAdaptor adaptor,
     ConversionPatternRewriter &rewriter) const {
   Location loc = op.getLoc();
-  if (chipset.majorVersion != 9 || chipset < kGfx940)
+  if (!(chipset.isGfx940() || chipset.hasOcpFp8()))
     return rewriter.notifyMatchFailure(
         loc, "Fp8 conversion instructions are not available on target "
              "architecture and their emulation is not implemented");
@@ -852,7 +852,7 @@ LogicalResult PackedStochRoundFp8OpLowering::matchAndRewrite(
     PackedStochRoundFp8Op op, PackedStochRoundFp8OpAdaptor adaptor,
     ConversionPatternRewriter &rewriter) const {
   Location loc = op.getLoc();
-  if (chipset.majorVersion != 9 || chipset < kGfx940)
+  if (!(chipset.isGfx940() || chipset.hasOcpFp8()))
     return rewriter.notifyMatchFailure(
         loc, "Fp8 conversion instructions are not available on target "
              "architecture and their emulation is not implemented");

mlir/lib/Conversion/ArithToAMDGPU/ArithToAMDGPU.cpp

@@ -41,6 +41,10 @@ struct ArithToAMDGPUConversionPass final
 struct ExtFOnFloat8RewritePattern final : OpRewritePattern<arith::ExtFOp> {
   using OpRewritePattern::OpRewritePattern;
 
+  Chipset chipset;
+  ExtFOnFloat8RewritePattern(MLIRContext *ctx, Chipset chipset)
+      : OpRewritePattern::OpRewritePattern(ctx), chipset(chipset) {}
+
   LogicalResult match(arith::ExtFOp op) const override;
   void rewrite(arith::ExtFOp op, PatternRewriter &rewriter) const override;
 };
@@ -68,6 +72,15 @@ struct TruncfToFloat16RewritePattern final
 
 } // end namespace
 
+static LogicalResult isSupportedFp8(Type elementType, Chipset chipset) {
+  if (chipset.isGfx940())
+    return success(elementType.isFloat8E5M2FNUZ() ||
+                   elementType.isFloat8E4M3FNUZ());
+  if (chipset.hasOcpFp8())
+    return success(elementType.isFloat8E5M2() || elementType.isFloat8E4M3FN());
+  return failure();
+}
+
 static Value castF32To(Type elementType, Value f32, Location loc,
                        PatternRewriter &rewriter) {
   if (elementType.isF32())
@@ -86,8 +99,7 @@ LogicalResult ExtFOnFloat8RewritePattern::match(arith::ExtFOp op) const {
       return failure();
     inType = inVecType.getElementType();
   }
-  return success(inType.isFloat8E5M2FNUZ() || inType.isFloat8E4M3FNUZ() ||
-                 inType.isFloat8E5M2() || inType.isFloat8E4M3FN());
+  return isSupportedFp8(inType, chipset);
 }
 
 void ExtFOnFloat8RewritePattern::rewrite(arith::ExtFOp op,
@@ -218,10 +230,7 @@ LogicalResult TruncFToFloat8RewritePattern::match(arith::TruncFOp op) const {
     // Conversion between 8-bit floats is not supported with truncation enabled.
     return failure();
 
-  return success((((outType.isFloat8E5M2FNUZ() || outType.isFloat8E4M3FNUZ()) &&
-                   chipset.isGfx940()) ||
-                  ((outType.isFloat8E5M2() || outType.isFloat8E4M3FN()) &&
-                   chipset.hasOcpFp8())));
+  return isSupportedFp8(outType, chipset);
 }
 
 void TruncFToFloat8RewritePattern::rewrite(arith::TruncFOp op,
@@ -370,7 +379,7 @@ void mlir::arith::populateArithToAMDGPUConversionPatterns(
     bool saturateFP8Truncf, bool allowPackedF16Rtz, Chipset chipset) {
 
   if (convertFP8Arithmetic) {
-    patterns.add<ExtFOnFloat8RewritePattern>(patterns.getContext());
+    patterns.add<ExtFOnFloat8RewritePattern>(patterns.getContext(), chipset);
     patterns.add<TruncFToFloat8RewritePattern>(patterns.getContext(),
                                                saturateFP8Truncf, chipset);
   }
@@ -389,7 +398,7 @@ void ArithToAMDGPUConversionPass::runOnOperation() {
   }
 
   bool convertFP8Arithmetic =
-      maybeChipset->majorVersion == 9 && *maybeChipset >= Chipset(9, 4, 0);
+      maybeChipset->isGfx940() || maybeChipset->hasOcpFp8();
   arith::populateArithToAMDGPUConversionPatterns(
       patterns, convertFP8Arithmetic, saturateFP8Truncf, allowPackedF16Rtz,
       *maybeChipset);