[Matrix] Propagate shape information through cast insts

llvm/lib/Transforms/Scalar/LowerMatrixIntrinsics.cpp

@@ -33,8 +33,10 @@
 #include "llvm/IR/CFG.h"
 #include "llvm/IR/DataLayout.h"
 #include "llvm/IR/DebugInfoMetadata.h"
+#include "llvm/IR/DerivedTypes.h"
 #include "llvm/IR/Function.h"
 #include "llvm/IR/IRBuilder.h"
+#include "llvm/IR/InstrTypes.h"
 #include "llvm/IR/Instructions.h"
 #include "llvm/IR/IntrinsicInst.h"
 #include "llvm/IR/MatrixBuilder.h"
@@ -247,6 +249,34 @@ static bool isUniformShape(Value *V) {
   if (I->isBinaryOp())
     return true;
 
+  if (auto *Cast = dyn_cast<CastInst>(V)) {
+    switch (Cast->getOpcode()) {
+    case llvm::Instruction::Trunc:
+    case llvm::Instruction::ZExt:
+    case llvm::Instruction::SExt:
+    case llvm::Instruction::FPToUI:
+    case llvm::Instruction::FPToSI:
+    case llvm::Instruction::UIToFP:
+    case llvm::Instruction::SIToFP:
+    case llvm::Instruction::FPTrunc:
+    case llvm::Instruction::FPExt:
+      return true;
+    case llvm::Instruction::AddrSpaceCast:
+    case CastInst::PtrToInt:
+    case CastInst::IntToPtr:
+      return false;
+    case CastInst::BitCast: {
+      if (auto *SrcVTy = dyn_cast<FixedVectorType>(Cast->getSrcTy()))
+        if (auto *DestVTy = dyn_cast<FixedVectorType>(Cast->getDestTy()))
+          return SrcVTy->getNumElements() == DestVTy->getNumElements();
+      return false;
+    }
+    case llvm::Instruction::CastOpsEnd:
+      llvm_unreachable("not an actual cast op");
+    }
+    llvm_unreachable("unhandled cast opcode");
+  }
+
   if (auto *II = dyn_cast<IntrinsicInst>(V))
     switch (II->getIntrinsicID()) {
     case Intrinsic::abs:
@@ -1110,6 +1140,8 @@ class LowerMatrixIntrinsics {
       Value *Op2;
       if (auto *BinOp = dyn_cast<BinaryOperator>(Inst))
         VisitBinaryOperator(BinOp, SI);
+      else if (auto *Cast = dyn_cast<CastInst>(Inst))
+        VisitCastInstruction(Cast, SI);
       else if (auto *UnOp = dyn_cast<UnaryOperator>(Inst))
         VisitUnaryOperator(UnOp, SI);
       else if (IntrinsicInst *Intr = dyn_cast<IntrinsicInst>(Inst))
@@ -2260,6 +2292,30 @@ class LowerMatrixIntrinsics {
                      Builder);
   }
 
+  /// Lower cast instructions.
+  void VisitCastInstruction(CastInst *Inst, const ShapeInfo &Shape) {
+    Value *Op = Inst->getOperand(0);
+
+    IRBuilder<> Builder(Inst);
+
+    MatrixTy Result;
+    MatrixTy M = getMatrix(Op, Shape, Builder);
+
+    Builder.setFastMathFlags(getFastMathFlags(Inst));
+
+    auto *OrigVTy = cast<VectorType>(Inst->getType());
+    auto *NewVTy = VectorType::get(OrigVTy->getElementType(),
+                                   ElementCount::getFixed(M.getStride()));
+
+    for (auto &Vector : M.vectors())
+      Result.addVector(Builder.CreateCast(Inst->getOpcode(), Vector, NewVTy));
+
+    finalizeLowering(Inst,
+                     Result.addNumComputeOps(getNumOps(Result.getVectorTy()) *
+                                             Result.getNumVectors()),
+                     Builder);
+  }
+
   /// Helper to linearize a matrix expression tree into a string. Currently
   /// matrix expressions are linarized by starting at an expression leaf and
   /// linearizing bottom up.

llvm/test/Transforms/LowerMatrixIntrinsics/unary.ll

@@ -0,0 +1,250 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt -passes='lower-matrix-intrinsics' -S < %s | FileCheck %s
+
+define void @fneg_2x2(ptr %in, ptr %out) {
+; CHECK-LABEL: @fneg_2x2(
+; CHECK-NEXT:    [[COL_LOAD:%.*]] = load <2 x float>, ptr [[IN:%.*]], align 16
+; CHECK-NEXT:    [[VEC_GEP:%.*]] = getelementptr float, ptr [[IN]], i64 2
+; CHECK-NEXT:    [[COL_LOAD1:%.*]] = load <2 x float>, ptr [[VEC_GEP]], align 8
+; CHECK-NEXT:    [[TMP1:%.*]] = fneg <2 x float> [[COL_LOAD]]
+; CHECK-NEXT:    [[TMP2:%.*]] = fneg <2 x float> [[COL_LOAD1]]
+; CHECK-NEXT:    store <2 x float> [[TMP1]], ptr [[OUT:%.*]], align 4
+; CHECK-NEXT:    [[VEC_GEP2:%.*]] = getelementptr float, ptr [[OUT]], i64 2
+; CHECK-NEXT:    store <2 x float> [[TMP2]], ptr [[VEC_GEP2]], align 4
+; CHECK-NEXT:    ret void
+;
+  %inv = load <4 x float>, ptr %in
+  %op = fneg <4 x float> %inv
+  call void @llvm.matrix.column.major.store(<4 x float> %op, ptr %out, i64 2, i1 false, i32 2, i32 2)
+  ret void
+}
+
+define void @trunc_2x2(ptr %in, ptr %out) {
+; CHECK-LABEL: @trunc_2x2(
+; CHECK-NEXT:    [[COL_LOAD:%.*]] = load <2 x i64>, ptr [[IN:%.*]], align 32
+; CHECK-NEXT:    [[VEC_GEP:%.*]] = getelementptr i64, ptr [[IN]], i64 2
+; CHECK-NEXT:    [[COL_LOAD1:%.*]] = load <2 x i64>, ptr [[VEC_GEP]], align 16
+; CHECK-NEXT:    [[TMP1:%.*]] = trunc <2 x i64> [[COL_LOAD]] to <2 x i32>
+; CHECK-NEXT:    [[TMP2:%.*]] = trunc <2 x i64> [[COL_LOAD1]] to <2 x i32>
+; CHECK-NEXT:    store <2 x i32> [[TMP1]], ptr [[OUT:%.*]], align 4
+; CHECK-NEXT:    [[VEC_GEP2:%.*]] = getelementptr i32, ptr [[OUT]], i64 2
+; CHECK-NEXT:    store <2 x i32> [[TMP2]], ptr [[VEC_GEP2]], align 4
+; CHECK-NEXT:    ret void
+;
+  %inv = load <4 x i64>, ptr %in
+  %op = trunc <4 x i64> %inv to <4 x i32>
+  call void @llvm.matrix.column.major.store(<4 x i32> %op, ptr %out, i64 2, i1 false, i32 2, i32 2)
+  ret void
+}
+
+define void @zext_2x2(ptr %in, ptr %out) {
+; CHECK-LABEL: @zext_2x2(
+; CHECK-NEXT:    [[COL_LOAD:%.*]] = load <2 x i16>, ptr [[IN:%.*]], align 8
+; CHECK-NEXT:    [[VEC_GEP:%.*]] = getelementptr i16, ptr [[IN]], i64 2
+; CHECK-NEXT:    [[COL_LOAD1:%.*]] = load <2 x i16>, ptr [[VEC_GEP]], align 4
+; CHECK-NEXT:    [[TMP1:%.*]] = zext <2 x i16> [[COL_LOAD]] to <2 x i32>
+; CHECK-NEXT:    [[TMP2:%.*]] = zext <2 x i16> [[COL_LOAD1]] to <2 x i32>
+; CHECK-NEXT:    store <2 x i32> [[TMP1]], ptr [[OUT:%.*]], align 4
+; CHECK-NEXT:    [[VEC_GEP2:%.*]] = getelementptr i32, ptr [[OUT]], i64 2
+; CHECK-NEXT:    store <2 x i32> [[TMP2]], ptr [[VEC_GEP2]], align 4
+; CHECK-NEXT:    ret void
+;
+  %inv = load <4 x i16>, ptr %in
+  %op = zext <4 x i16> %inv to <4 x i32>
+  call void @llvm.matrix.column.major.store(<4 x i32> %op, ptr %out, i64 2, i1 false, i32 2, i32 2)
+  ret void
+}
+
+define void @sext_2x2(ptr %in, ptr %out) {
+; CHECK-LABEL: @sext_2x2(
+; CHECK-NEXT:    [[COL_LOAD:%.*]] = load <2 x i8>, ptr [[IN:%.*]], align 4
+; CHECK-NEXT:    [[VEC_GEP:%.*]] = getelementptr i8, ptr [[IN]], i64 2
+; CHECK-NEXT:    [[COL_LOAD1:%.*]] = load <2 x i8>, ptr [[VEC_GEP]], align 2
+; CHECK-NEXT:    [[TMP1:%.*]] = sext <2 x i8> [[COL_LOAD]] to <2 x i16>
+; CHECK-NEXT:    [[TMP2:%.*]] = sext <2 x i8> [[COL_LOAD1]] to <2 x i16>
+; CHECK-NEXT:    store <2 x i16> [[TMP1]], ptr [[OUT:%.*]], align 2
+; CHECK-NEXT:    [[VEC_GEP2:%.*]] = getelementptr i16, ptr [[OUT]], i64 2
+; CHECK-NEXT:    store <2 x i16> [[TMP2]], ptr [[VEC_GEP2]], align 2
+; CHECK-NEXT:    ret void
+;
+  %inv = load <4 x i8>, ptr %in
+  %op = sext <4 x i8> %inv to <4 x i16>
+  call void @llvm.matrix.column.major.store(<4 x i16> %op, ptr %out, i64 2, i1 false, i32 2, i32 2)
+  ret void
+}
+
+define void @fptoui_2x2(ptr %in, ptr %out) {
+; CHECK-LABEL: @fptoui_2x2(
+; CHECK-NEXT:    [[COL_LOAD:%.*]] = load <2 x float>, ptr [[IN:%.*]], align 16
+; CHECK-NEXT:    [[VEC_GEP:%.*]] = getelementptr float, ptr [[IN]], i64 2
+; CHECK-NEXT:    [[COL_LOAD1:%.*]] = load <2 x float>, ptr [[VEC_GEP]], align 8
+; CHECK-NEXT:    [[TMP1:%.*]] = fptoui <2 x float> [[COL_LOAD]] to <2 x i32>
+; CHECK-NEXT:    [[TMP2:%.*]] = fptoui <2 x float> [[COL_LOAD1]] to <2 x i32>
+; CHECK-NEXT:    store <2 x i32> [[TMP1]], ptr [[OUT:%.*]], align 4
+; CHECK-NEXT:    [[VEC_GEP2:%.*]] = getelementptr i32, ptr [[OUT]], i64 2
+; CHECK-NEXT:    store <2 x i32> [[TMP2]], ptr [[VEC_GEP2]], align 4
+; CHECK-NEXT:    ret void
+;
+  %inv = load <4 x float>, ptr %in
+  %op = fptoui <4 x float> %inv to <4 x i32>
+  call void @llvm.matrix.column.major.store(<4 x i32> %op, ptr %out, i64 2, i1 false, i32 2, i32 2)
+  ret void
+}
+
+define void @fptosi_2x2(ptr %in, ptr %out) {
+; CHECK-LABEL: @fptosi_2x2(
+; CHECK-NEXT:    [[COL_LOAD:%.*]] = load <2 x float>, ptr [[IN:%.*]], align 16
+; CHECK-NEXT:    [[VEC_GEP:%.*]] = getelementptr float, ptr [[IN]], i64 2
+; CHECK-NEXT:    [[COL_LOAD1:%.*]] = load <2 x float>, ptr [[VEC_GEP]], align 8
+; CHECK-NEXT:    [[TMP1:%.*]] = fptosi <2 x float> [[COL_LOAD]] to <2 x i32>
+; CHECK-NEXT:    [[TMP2:%.*]] = fptosi <2 x float> [[COL_LOAD1]] to <2 x i32>
+; CHECK-NEXT:    store <2 x i32> [[TMP1]], ptr [[OUT:%.*]], align 4
+; CHECK-NEXT:    [[VEC_GEP2:%.*]] = getelementptr i32, ptr [[OUT]], i64 2
+; CHECK-NEXT:    store <2 x i32> [[TMP2]], ptr [[VEC_GEP2]], align 4
+; CHECK-NEXT:    ret void
+;
+  %inv = load <4 x float>, ptr %in
+  %op = fptosi <4 x float> %inv to <4 x i32>
+  call void @llvm.matrix.column.major.store(<4 x i32> %op, ptr %out, i64 2, i1 false, i32 2, i32 2)
+  ret void
+}
+
+define void @uitofp_2x2(ptr %in, ptr %out) {
+; CHECK-LABEL: @uitofp_2x2(
+; CHECK-NEXT:    [[COL_LOAD:%.*]] = load <2 x i64>, ptr [[IN:%.*]], align 32
+; CHECK-NEXT:    [[VEC_GEP:%.*]] = getelementptr i64, ptr [[IN]], i64 2
+; CHECK-NEXT:    [[COL_LOAD1:%.*]] = load <2 x i64>, ptr [[VEC_GEP]], align 16
+; CHECK-NEXT:    [[TMP1:%.*]] = uitofp <2 x i64> [[COL_LOAD]] to <2 x double>
+; CHECK-NEXT:    [[TMP2:%.*]] = uitofp <2 x i64> [[COL_LOAD1]] to <2 x double>
+; CHECK-NEXT:    store <2 x double> [[TMP1]], ptr [[OUT:%.*]], align 8
+; CHECK-NEXT:    [[VEC_GEP2:%.*]] = getelementptr double, ptr [[OUT]], i64 2
+; CHECK-NEXT:    store <2 x double> [[TMP2]], ptr [[VEC_GEP2]], align 8
+; CHECK-NEXT:    ret void
+;
+  %inv = load <4 x i64>, ptr %in
+  %op = uitofp <4 x i64> %inv to <4 x double>
+  call void @llvm.matrix.column.major.store(<4 x double> %op, ptr %out, i64 2, i1 false, i32 2, i32 2)
+  ret void
+}
+
+define void @sitofp_2x2(ptr %in, ptr %out) {
+; CHECK-LABEL: @sitofp_2x2(
+; CHECK-NEXT:    [[COL_LOAD:%.*]] = load <2 x i64>, ptr [[IN:%.*]], align 32
+; CHECK-NEXT:    [[VEC_GEP:%.*]] = getelementptr i64, ptr [[IN]], i64 2
+; CHECK-NEXT:    [[COL_LOAD1:%.*]] = load <2 x i64>, ptr [[VEC_GEP]], align 16
+; CHECK-NEXT:    [[TMP1:%.*]] = sitofp <2 x i64> [[COL_LOAD]] to <2 x double>
+; CHECK-NEXT:    [[TMP2:%.*]] = sitofp <2 x i64> [[COL_LOAD1]] to <2 x double>
+; CHECK-NEXT:    store <2 x double> [[TMP1]], ptr [[OUT:%.*]], align 8
+; CHECK-NEXT:    [[VEC_GEP2:%.*]] = getelementptr double, ptr [[OUT]], i64 2
+; CHECK-NEXT:    store <2 x double> [[TMP2]], ptr [[VEC_GEP2]], align 8
+; CHECK-NEXT:    ret void
+;
+  %inv = load <4 x i64>, ptr %in
+  %op = sitofp <4 x i64> %inv to <4 x double>
+  call void @llvm.matrix.column.major.store(<4 x double> %op, ptr %out, i64 2, i1 false, i32 2, i32 2)
+  ret void
+}
+
+define void @fptrunc_2x2(ptr %in, ptr %out) {
+; CHECK-LABEL: @fptrunc_2x2(
+; CHECK-NEXT:    [[COL_LOAD:%.*]] = load <2 x double>, ptr [[IN:%.*]], align 32
+; CHECK-NEXT:    [[VEC_GEP:%.*]] = getelementptr double, ptr [[IN]], i64 2
+; CHECK-NEXT:    [[COL_LOAD1:%.*]] = load <2 x double>, ptr [[VEC_GEP]], align 16
+; CHECK-NEXT:    [[TMP1:%.*]] = fptrunc nnan <2 x double> [[COL_LOAD]] to <2 x float>
+; CHECK-NEXT:    [[TMP2:%.*]] = fptrunc nnan <2 x double> [[COL_LOAD1]] to <2 x float>
+; CHECK-NEXT:    store <2 x float> [[TMP1]], ptr [[OUT:%.*]], align 4
+; CHECK-NEXT:    [[VEC_GEP2:%.*]] = getelementptr float, ptr [[OUT]], i64 2
+; CHECK-NEXT:    store <2 x float> [[TMP2]], ptr [[VEC_GEP2]], align 4
+; CHECK-NEXT:    ret void
+;
+  %inv = load <4 x double>, ptr %in
+  %op = fptrunc nnan <4 x double> %inv to <4 x float>
+  call void @llvm.matrix.column.major.store(<4 x float> %op, ptr %out, i64 2, i1 false, i32 2, i32 2)
+  ret void
+}
+
+define void @fpext_2x2(ptr %in, ptr %out) {
+; CHECK-LABEL: @fpext_2x2(
+; CHECK-NEXT:    [[COL_LOAD:%.*]] = load <2 x float>, ptr [[IN:%.*]], align 16
+; CHECK-NEXT:    [[VEC_GEP:%.*]] = getelementptr float, ptr [[IN]], i64 2
+; CHECK-NEXT:    [[COL_LOAD1:%.*]] = load <2 x float>, ptr [[VEC_GEP]], align 8
+; CHECK-NEXT:    [[TMP1:%.*]] = fpext <2 x float> [[COL_LOAD]] to <2 x double>
+; CHECK-NEXT:    [[TMP2:%.*]] = fpext <2 x float> [[COL_LOAD1]] to <2 x double>
+; CHECK-NEXT:    store <2 x double> [[TMP1]], ptr [[OUT:%.*]], align 8
+; CHECK-NEXT:    [[VEC_GEP2:%.*]] = getelementptr double, ptr [[OUT]], i64 2
+; CHECK-NEXT:    store <2 x double> [[TMP2]], ptr [[VEC_GEP2]], align 8
+; CHECK-NEXT:    ret void
+;
+  %inv = load <4 x float>, ptr %in
+  %op = fpext <4 x float> %inv to <4 x double>
+  call void @llvm.matrix.column.major.store(<4 x double> %op, ptr %out, i64 2, i1 false, i32 2, i32 2)
+  ret void
+}
+
+define void @bitcast_2x2_v4f64_to_v4i64(ptr %in, ptr %out) {
+; CHECK-LABEL: @bitcast_2x2_v4f64_to_v4i64(
+; CHECK-NEXT:    [[COL_LOAD:%.*]] = load <2 x double>, ptr [[IN:%.*]], align 32
+; CHECK-NEXT:    [[VEC_GEP:%.*]] = getelementptr double, ptr [[IN]], i64 2
+; CHECK-NEXT:    [[COL_LOAD1:%.*]] = load <2 x double>, ptr [[VEC_GEP]], align 16
+; CHECK-NEXT:    [[TMP1:%.*]] = bitcast <2 x double> [[COL_LOAD]] to <2 x i64>
+; CHECK-NEXT:    [[TMP2:%.*]] = bitcast <2 x double> [[COL_LOAD1]] to <2 x i64>
+; CHECK-NEXT:    store <2 x i64> [[TMP1]], ptr [[OUT:%.*]], align 4
+; CHECK-NEXT:    [[VEC_GEP2:%.*]] = getelementptr i64, ptr [[OUT]], i64 2
+; CHECK-NEXT:    store <2 x i64> [[TMP2]], ptr [[VEC_GEP2]], align 4
+; CHECK-NEXT:    ret void
+;
+  %inv = load <4 x double>, ptr %in
+  %op = bitcast <4 x double> %inv to <4 x i64>
+  call void @llvm.matrix.column.major.store(<4 x i64> %op, ptr %out, i64 2, i1 false, i32 2, i32 2)
+  ret void
+}
+
+define void @bitcast_2x2_v4f64_to_v8i32(ptr %in, ptr %out) {
+; CHECK-LABEL: @bitcast_2x2_v4f64_to_v8i32(
+; CHECK-NEXT:    [[INV:%.*]] = load <4 x double>, ptr [[IN:%.*]], align 32
+; CHECK-NEXT:    [[OP:%.*]] = bitcast <4 x double> [[INV]] to <8 x i32>
+; CHECK-NEXT:    [[SPLIT:%.*]] = shufflevector <8 x i32> [[OP]], <8 x i32> poison, <4 x i32> <i32 0, i32 1, i32 2, i32 3>
+; CHECK-NEXT:    [[SPLIT1:%.*]] = shufflevector <8 x i32> [[OP]], <8 x i32> poison, <4 x i32> <i32 4, i32 5, i32 6, i32 7>
+; CHECK-NEXT:    store <4 x i32> [[SPLIT]], ptr [[OUT:%.*]], align 4
+; CHECK-NEXT:    [[VEC_GEP:%.*]] = getelementptr i32, ptr [[OUT]], i64 4
+; CHECK-NEXT:    store <4 x i32> [[SPLIT1]], ptr [[VEC_GEP]], align 4
+; CHECK-NEXT:    ret void
+;
+  %inv = load <4 x double>, ptr %in
+  %op = bitcast <4 x double> %inv to <8 x i32>
+  call void @llvm.matrix.column.major.store(<8 x i32> %op, ptr %out, i64 4, i1 false, i32 4, i32 2)
+  ret void
+}
+
+define void @bitcast_2x2_i256_to_v4i64(ptr %in, ptr %out) {
+; CHECK-LABEL: @bitcast_2x2_i256_to_v4i64(
+; CHECK-NEXT:    [[INV:%.*]] = load i256, ptr [[IN:%.*]], align 4
+; CHECK-NEXT:    [[OP:%.*]] = bitcast i256 [[INV]] to <4 x double>
+; CHECK-NEXT:    [[SPLIT:%.*]] = shufflevector <4 x double> [[OP]], <4 x double> poison, <2 x i32> <i32 0, i32 1>
+; CHECK-NEXT:    [[SPLIT1:%.*]] = shufflevector <4 x double> [[OP]], <4 x double> poison, <2 x i32> <i32 2, i32 3>
+; CHECK-NEXT:    store <2 x double> [[SPLIT]], ptr [[OUT:%.*]], align 8
+; CHECK-NEXT:    [[VEC_GEP:%.*]] = getelementptr double, ptr [[OUT]], i64 2
+; CHECK-NEXT:    store <2 x double> [[SPLIT1]], ptr [[VEC_GEP]], align 8
+; CHECK-NEXT:    ret void
+;
+  %inv = load i256, ptr %in
+  %op = bitcast i256 %inv to <4 x double>
+  call void @llvm.matrix.column.major.store(<4 x double> %op, ptr %out, i64 2, i1 false, i32 2, i32 2)
+  ret void
+}
+
+define void @bitcast_2x2_4i64_to_i256(ptr %in, ptr %out) {
+; CHECK-LABEL: @bitcast_2x2_4i64_to_i256(
+; CHECK-NEXT:    [[COL_LOAD:%.*]] = load <2 x double>, ptr [[IN:%.*]], align 8
+; CHECK-NEXT:    [[VEC_GEP:%.*]] = getelementptr double, ptr [[IN]], i64 2
+; CHECK-NEXT:    [[COL_LOAD1:%.*]] = load <2 x double>, ptr [[VEC_GEP]], align 8
+; CHECK-NEXT:    [[TMP1:%.*]] = shufflevector <2 x double> [[COL_LOAD]], <2 x double> [[COL_LOAD1]], <4 x i32> <i32 0, i32 1, i32 2, i32 3>
+; CHECK-NEXT:    [[OP:%.*]] = bitcast <4 x double> [[TMP1]] to i256
+; CHECK-NEXT:    store i256 [[OP]], ptr [[OUT:%.*]], align 4
+; CHECK-NEXT:    ret void
+;
+  %inv = call <4 x double> @llvm.matrix.column.major.load(ptr %in, i64 2, i1 false, i32 2, i32 2)
+  %op = bitcast <4 x double> %inv to i256
+  store i256 %op, ptr %out
+  ret void
+}