[Mlir-commits] [mlir] cd3a234 - [mlir][math] Added constant folding for IPowI operation.
Slava Zakharin
llvmlistbot at llvm.org
Mon Aug 15 11:33:27 PDT 2022
Author: Slava Zakharin
Date: 2022-08-15T11:31:14-07:00
New Revision: cd3a234fa9272f90dcfad3158cd9b51a0e643d1b
URL: https://github.com/llvm/llvm-project/commit/cd3a234fa9272f90dcfad3158cd9b51a0e643d1b
DIFF: https://github.com/llvm/llvm-project/commit/cd3a234fa9272f90dcfad3158cd9b51a0e643d1b.diff
LOG: [mlir][math] Added constant folding for IPowI operation.
Differential Revision: https://reviews.llvm.org/D130389
Added:
mlir/test/Dialect/Math/canonicalize_ipowi.mlir
Modified:
mlir/include/mlir/Dialect/Math/IR/MathOps.td
mlir/lib/Dialect/Math/IR/MathOps.cpp
Removed:
################################################################################
diff --git a/mlir/include/mlir/Dialect/Math/IR/MathOps.td b/mlir/include/mlir/Dialect/Math/IR/MathOps.td
index bc9be20035c82..98ed2eed39c65 100644
--- a/mlir/include/mlir/Dialect/Math/IR/MathOps.td
+++ b/mlir/include/mlir/Dialect/Math/IR/MathOps.td
@@ -538,6 +538,7 @@ def Math_IPowIOp : Math_IntegerBinaryOp<"ipowi"> {
%a = math.ipowi %b, %c : i32
```
}];
+ let hasFolder = 1;
}
//===----------------------------------------------------------------------===//
diff --git a/mlir/lib/Dialect/Math/IR/MathOps.cpp b/mlir/lib/Dialect/Math/IR/MathOps.cpp
index e128435cefdc2..7369110e96acf 100644
--- a/mlir/lib/Dialect/Math/IR/MathOps.cpp
+++ b/mlir/lib/Dialect/Math/IR/MathOps.cpp
@@ -134,6 +134,56 @@ OpFoldResult math::CtPopOp::fold(ArrayRef<Attribute> operands) {
});
}
+//===----------------------------------------------------------------------===//
+// IPowIOp folder
+//===----------------------------------------------------------------------===//
+
+OpFoldResult math::IPowIOp::fold(ArrayRef<Attribute> operands) {
+ return constFoldBinaryOpConditional<IntegerAttr>(
+ operands, [](const APInt &base, const APInt &power) -> Optional<APInt> {
+ unsigned width = base.getBitWidth();
+ auto zeroValue = APInt::getZero(width);
+ APInt oneValue{width, 1ULL, /*isSigned=*/true};
+ APInt minusOneValue{width, -1ULL, /*isSigned=*/true};
+
+ if (power.isZero())
+ return oneValue;
+
+ if (power.isNegative()) {
+ // Leave 0 raised to negative power not folded.
+ if (base.isZero())
+ return {};
+ if (base.eq(oneValue))
+ return oneValue;
+ // If abs(base) > 1, then the result is zero.
+ if (base.ne(minusOneValue))
+ return zeroValue;
+ // base == -1:
+ // -1: power is odd
+ // 1: power is even
+ if (power[0] == 1)
+ return minusOneValue;
+
+ return oneValue;
+ }
+
+ // power is positive.
+ APInt result = oneValue;
+ APInt curBase = base;
+ APInt curPower = power;
+ while (true) {
+ if (curPower[0] == 1)
+ result *= curBase;
+ curPower.lshrInPlace(1);
+ if (curPower.isZero())
+ return result;
+ curBase *= curBase;
+ }
+ });
+
+ return Attribute();
+}
+
//===----------------------------------------------------------------------===//
// LogOp folder
//===----------------------------------------------------------------------===//
diff --git a/mlir/test/Dialect/Math/canonicalize_ipowi.mlir b/mlir/test/Dialect/Math/canonicalize_ipowi.mlir
new file mode 100644
index 0000000000000..066049620934f
--- /dev/null
+++ b/mlir/test/Dialect/Math/canonicalize_ipowi.mlir
@@ -0,0 +1,442 @@
+// RUN: mlir-opt %s -canonicalize | FileCheck %s
+
+// CHECK-LABEL: @ipowi32_fold(
+// CHECK-SAME: %[[result:.+]]: memref<?xi32>
+func.func @ipowi32_fold(%result : memref<?xi32>) {
+// CHECK-DAG: %[[cst0:.+]] = arith.constant 0 : i32
+// CHECK-DAG: %[[cst1:.+]] = arith.constant 1 : i32
+// CHECK-DAG: %[[cst1073741824:.+]] = arith.constant 1073741824 : i32
+// CHECK-DAG: %[[cst_m1:.+]] = arith.constant -1 : i32
+// CHECK-DAG: %[[cst_m27:.+]] = arith.constant -27 : i32
+// CHECK-DAG: %[[i0:.+]] = arith.constant 0 : index
+// CHECK-DAG: %[[i1:.+]] = arith.constant 1 : index
+// CHECK-DAG: %[[i2:.+]] = arith.constant 2 : index
+// CHECK-DAG: %[[i3:.+]] = arith.constant 3 : index
+// CHECK-DAG: %[[i4:.+]] = arith.constant 4 : index
+// CHECK-DAG: %[[i5:.+]] = arith.constant 5 : index
+// CHECK-DAG: %[[i6:.+]] = arith.constant 6 : index
+// CHECK-DAG: %[[i7:.+]] = arith.constant 7 : index
+// CHECK-DAG: %[[i8:.+]] = arith.constant 8 : index
+// CHECK-DAG: %[[i9:.+]] = arith.constant 9 : index
+// CHECK-DAG: %[[i10:.+]] = arith.constant 10 : index
+// CHECK-DAG: %[[i11:.+]] = arith.constant 11 : index
+
+// --- Test power == 0 ---
+ %arg0_base = arith.constant 0 : i32
+ %arg0_power = arith.constant 0 : i32
+ %res0 = math.ipowi %arg0_base, %arg0_power : i32
+ %i0 = arith.constant 0 : index
+ memref.store %res0, %result[%i0] : memref<?xi32>
+// CHECK: memref.store %[[cst1]], %[[result]][%[[i0]]] : memref<?xi32>
+
+ %arg1_base = arith.constant 10 : i32
+ %arg1_power = arith.constant 0 : i32
+ %res1 = math.ipowi %arg1_base, %arg1_power : i32
+ %i1 = arith.constant 1 : index
+ memref.store %res1, %result[%i1] : memref<?xi32>
+// CHECK: memref.store %[[cst1]], %[[result]][%[[i1]]] : memref<?xi32>
+
+ %arg2_base = arith.constant -10 : i32
+ %arg2_power = arith.constant 0 : i32
+ %res2 = math.ipowi %arg2_base, %arg2_power : i32
+ %i2 = arith.constant 2 : index
+ memref.store %res2, %result[%i2] : memref<?xi32>
+// CHECK: memref.store %[[cst1]], %[[result]][%[[i2]]] : memref<?xi32>
+
+// --- Test negative powers ---
+ %arg3_base = arith.constant 0 : i32
+ %arg3_power = arith.constant -1 : i32
+ %res3 = math.ipowi %arg3_base, %arg3_power : i32
+ %i3 = arith.constant 3 : index
+ memref.store %res3, %result[%i3] : memref<?xi32>
+// No folding for ipowi(0, x) for x < 0:
+// CHECK: %[[res3:.+]] = math.ipowi %[[cst0]], %[[cst_m1]] : i32
+// CHECK: memref.store %[[res3]], %[[result]][%[[i3]]] : memref<?xi32>
+
+ %arg4_base = arith.constant 1 : i32
+ %arg4_power = arith.constant -10 : i32
+ %res4 = math.ipowi %arg4_base, %arg4_power : i32
+ %i4 = arith.constant 4 : index
+ memref.store %res4, %result[%i4] : memref<?xi32>
+// CHECK: memref.store %[[cst1]], %[[result]][%[[i4]]] : memref<?xi32>
+
+ %arg5_base = arith.constant 2 : i32
+ %arg5_power = arith.constant -1 : i32
+ %res5 = math.ipowi %arg5_base, %arg5_power : i32
+ %i5 = arith.constant 5 : index
+ memref.store %res5, %result[%i5] : memref<?xi32>
+// CHECK: memref.store %[[cst0]], %[[result]][%[[i5]]] : memref<?xi32>
+
+ %arg6_base = arith.constant -2 : i32
+ %arg6_power = arith.constant -1 : i32
+ %res6 = math.ipowi %arg6_base, %arg6_power : i32
+ %i6 = arith.constant 6 : index
+ memref.store %res6, %result[%i6] : memref<?xi32>
+// CHECK: memref.store %[[cst0]], %[[result]][%[[i6]]] : memref<?xi32>
+
+ %arg7_base = arith.constant -1 : i32
+ %arg7_power = arith.constant -10 : i32
+ %res7 = math.ipowi %arg7_base, %arg7_power : i32
+ %i7 = arith.constant 7 : index
+ memref.store %res7, %result[%i7] : memref<?xi32>
+// CHECK: memref.store %[[cst1]], %[[result]][%[[i7]]] : memref<?xi32>
+
+ %arg8_base = arith.constant -1 : i32
+ %arg8_power = arith.constant -11 : i32
+ %res8 = math.ipowi %arg8_base, %arg8_power : i32
+ %i8 = arith.constant 8 : index
+ memref.store %res8, %result[%i8] : memref<?xi32>
+// CHECK: memref.store %[[cst_m1]], %[[result]][%[[i8]]] : memref<?xi32>
+
+// --- Test positive powers ---
+ %arg9_base = arith.constant -3 : i32
+ %arg9_power = arith.constant 3 : i32
+ %res9 = math.ipowi %arg9_base, %arg9_power : i32
+ %i9 = arith.constant 9 : index
+ memref.store %res9, %result[%i9] : memref<?xi32>
+// CHECK: memref.store %[[cst_m27]], %[[result]][%[[i9]]] : memref<?xi32>
+
+ %arg10_base = arith.constant 2 : i32
+ %arg10_power = arith.constant 30 : i32
+ %res10 = math.ipowi %arg10_base, %arg10_power : i32
+ %i10 = arith.constant 10 : index
+ memref.store %res10, %result[%i10] : memref<?xi32>
+// CHECK: memref.store %[[cst1073741824]], %[[result]][%[[i10]]] : memref<?xi32>
+
+// --- Test vector folding ---
+ %arg11_base = arith.constant 2 : i32
+ %arg11_base_vec = vector.splat %arg11_base : vector<2x2xi32>
+ %arg11_power = arith.constant 30 : i32
+ %arg11_power_vec = vector.splat %arg11_power : vector<2x2xi32>
+ %res11_vec = math.ipowi %arg11_base_vec, %arg11_power_vec : vector<2x2xi32>
+ %i11 = arith.constant 11 : index
+ %res11 = vector.extract %res11_vec[1, 1] : vector<2x2xi32>
+ memref.store %res11, %result[%i11] : memref<?xi32>
+// CHECK: memref.store %[[cst1073741824]], %[[result]][%[[i11]]] : memref<?xi32>
+
+ return
+}
+
+// CHECK-LABEL: @ipowi64_fold(
+// CHECK-SAME: %[[result:.+]]: memref<?xi64>
+func.func @ipowi64_fold(%result : memref<?xi64>) {
+// CHECK-DAG: %[[cst0:.+]] = arith.constant 0 : i64
+// CHECK-DAG: %[[cst1:.+]] = arith.constant 1 : i64
+// CHECK-DAG: %[[cst1073741824:.+]] = arith.constant 1073741824 : i64
+// CHECK-DAG: %[[cst281474976710656:.+]] = arith.constant 281474976710656 : i64
+// CHECK-DAG: %[[cst_m1:.+]] = arith.constant -1 : i64
+// CHECK-DAG: %[[cst_m27:.+]] = arith.constant -27 : i64
+// CHECK-DAG: %[[i0:.+]] = arith.constant 0 : index
+// CHECK-DAG: %[[i1:.+]] = arith.constant 1 : index
+// CHECK-DAG: %[[i2:.+]] = arith.constant 2 : index
+// CHECK-DAG: %[[i3:.+]] = arith.constant 3 : index
+// CHECK-DAG: %[[i4:.+]] = arith.constant 4 : index
+// CHECK-DAG: %[[i5:.+]] = arith.constant 5 : index
+// CHECK-DAG: %[[i6:.+]] = arith.constant 6 : index
+// CHECK-DAG: %[[i7:.+]] = arith.constant 7 : index
+// CHECK-DAG: %[[i8:.+]] = arith.constant 8 : index
+// CHECK-DAG: %[[i9:.+]] = arith.constant 9 : index
+// CHECK-DAG: %[[i10:.+]] = arith.constant 10 : index
+// CHECK-DAG: %[[i11:.+]] = arith.constant 11 : index
+
+// --- Test power == 0 ---
+ %arg0_base = arith.constant 0 : i64
+ %arg0_power = arith.constant 0 : i64
+ %res0 = math.ipowi %arg0_base, %arg0_power : i64
+ %i0 = arith.constant 0 : index
+ memref.store %res0, %result[%i0] : memref<?xi64>
+// CHECK: memref.store %[[cst1]], %[[result]][%[[i0]]] : memref<?xi64>
+
+ %arg1_base = arith.constant 10 : i64
+ %arg1_power = arith.constant 0 : i64
+ %res1 = math.ipowi %arg1_base, %arg1_power : i64
+ %i1 = arith.constant 1 : index
+ memref.store %res1, %result[%i1] : memref<?xi64>
+// CHECK: memref.store %[[cst1]], %[[result]][%[[i1]]] : memref<?xi64>
+
+ %arg2_base = arith.constant -10 : i64
+ %arg2_power = arith.constant 0 : i64
+ %res2 = math.ipowi %arg2_base, %arg2_power : i64
+ %i2 = arith.constant 2 : index
+ memref.store %res2, %result[%i2] : memref<?xi64>
+// CHECK: memref.store %[[cst1]], %[[result]][%[[i2]]] : memref<?xi64>
+
+// --- Test negative powers ---
+ %arg3_base = arith.constant 0 : i64
+ %arg3_power = arith.constant -1 : i64
+ %res3 = math.ipowi %arg3_base, %arg3_power : i64
+ %i3 = arith.constant 3 : index
+ memref.store %res3, %result[%i3] : memref<?xi64>
+// No folding for ipowi(0, x) for x < 0:
+// CHECK: %[[res3:.+]] = math.ipowi %[[cst0]], %[[cst_m1]] : i64
+// CHECK: memref.store %[[res3]], %[[result]][%[[i3]]] : memref<?xi64>
+
+ %arg4_base = arith.constant 1 : i64
+ %arg4_power = arith.constant -10 : i64
+ %res4 = math.ipowi %arg4_base, %arg4_power : i64
+ %i4 = arith.constant 4 : index
+ memref.store %res4, %result[%i4] : memref<?xi64>
+// CHECK: memref.store %[[cst1]], %[[result]][%[[i4]]] : memref<?xi64>
+
+ %arg5_base = arith.constant 2 : i64
+ %arg5_power = arith.constant -1 : i64
+ %res5 = math.ipowi %arg5_base, %arg5_power : i64
+ %i5 = arith.constant 5 : index
+ memref.store %res5, %result[%i5] : memref<?xi64>
+// CHECK: memref.store %[[cst0]], %[[result]][%[[i5]]] : memref<?xi64>
+
+ %arg6_base = arith.constant -2 : i64
+ %arg6_power = arith.constant -1 : i64
+ %res6 = math.ipowi %arg6_base, %arg6_power : i64
+ %i6 = arith.constant 6 : index
+ memref.store %res6, %result[%i6] : memref<?xi64>
+// CHECK: memref.store %[[cst0]], %[[result]][%[[i6]]] : memref<?xi64>
+
+ %arg7_base = arith.constant -1 : i64
+ %arg7_power = arith.constant -10 : i64
+ %res7 = math.ipowi %arg7_base, %arg7_power : i64
+ %i7 = arith.constant 7 : index
+ memref.store %res7, %result[%i7] : memref<?xi64>
+// CHECK: memref.store %[[cst1]], %[[result]][%[[i7]]] : memref<?xi64>
+
+ %arg8_base = arith.constant -1 : i64
+ %arg8_power = arith.constant -11 : i64
+ %res8 = math.ipowi %arg8_base, %arg8_power : i64
+ %i8 = arith.constant 8 : index
+ memref.store %res8, %result[%i8] : memref<?xi64>
+// CHECK: memref.store %[[cst_m1]], %[[result]][%[[i8]]] : memref<?xi64>
+
+// --- Test positive powers ---
+ %arg9_base = arith.constant -3 : i64
+ %arg9_power = arith.constant 3 : i64
+ %res9 = math.ipowi %arg9_base, %arg9_power : i64
+ %i9 = arith.constant 9 : index
+ memref.store %res9, %result[%i9] : memref<?xi64>
+// CHECK: memref.store %[[cst_m27]], %[[result]][%[[i9]]] : memref<?xi64>
+
+ %arg10_base = arith.constant 2 : i64
+ %arg10_power = arith.constant 30 : i64
+ %res10 = math.ipowi %arg10_base, %arg10_power : i64
+ %i10 = arith.constant 10 : index
+ memref.store %res10, %result[%i10] : memref<?xi64>
+// CHECK: memref.store %[[cst1073741824]], %[[result]][%[[i10]]] : memref<?xi64>
+
+ %arg11_base = arith.constant 2 : i64
+ %arg11_power = arith.constant 48 : i64
+ %res11 = math.ipowi %arg11_base, %arg11_power : i64
+ %i11 = arith.constant 11 : index
+ memref.store %res11, %result[%i11] : memref<?xi64>
+// CHECK: memref.store %[[cst281474976710656]], %[[result]][%[[i11]]] : memref<?xi64>
+
+ return
+}
+
+// CHECK-LABEL: @ipowi16_fold(
+// CHECK-SAME: %[[result:.+]]: memref<?xi16>
+func.func @ipowi16_fold(%result : memref<?xi16>) {
+// CHECK-DAG: %[[cst0:.+]] = arith.constant 0 : i16
+// CHECK-DAG: %[[cst1:.+]] = arith.constant 1 : i16
+// CHECK-DAG: %[[cst16384:.+]] = arith.constant 16384 : i16
+// CHECK-DAG: %[[cst_m1:.+]] = arith.constant -1 : i16
+// CHECK-DAG: %[[cst_m27:.+]] = arith.constant -27 : i16
+// CHECK-DAG: %[[i0:.+]] = arith.constant 0 : index
+// CHECK-DAG: %[[i1:.+]] = arith.constant 1 : index
+// CHECK-DAG: %[[i2:.+]] = arith.constant 2 : index
+// CHECK-DAG: %[[i3:.+]] = arith.constant 3 : index
+// CHECK-DAG: %[[i4:.+]] = arith.constant 4 : index
+// CHECK-DAG: %[[i5:.+]] = arith.constant 5 : index
+// CHECK-DAG: %[[i6:.+]] = arith.constant 6 : index
+// CHECK-DAG: %[[i7:.+]] = arith.constant 7 : index
+// CHECK-DAG: %[[i8:.+]] = arith.constant 8 : index
+// CHECK-DAG: %[[i9:.+]] = arith.constant 9 : index
+// CHECK-DAG: %[[i10:.+]] = arith.constant 10 : index
+
+// --- Test power == 0 ---
+ %arg0_base = arith.constant 0 : i16
+ %arg0_power = arith.constant 0 : i16
+ %res0 = math.ipowi %arg0_base, %arg0_power : i16
+ %i0 = arith.constant 0 : index
+ memref.store %res0, %result[%i0] : memref<?xi16>
+// CHECK: memref.store %[[cst1]], %[[result]][%[[i0]]] : memref<?xi16>
+
+ %arg1_base = arith.constant 10 : i16
+ %arg1_power = arith.constant 0 : i16
+ %res1 = math.ipowi %arg1_base, %arg1_power : i16
+ %i1 = arith.constant 1 : index
+ memref.store %res1, %result[%i1] : memref<?xi16>
+// CHECK: memref.store %[[cst1]], %[[result]][%[[i1]]] : memref<?xi16>
+
+ %arg2_base = arith.constant -10 : i16
+ %arg2_power = arith.constant 0 : i16
+ %res2 = math.ipowi %arg2_base, %arg2_power : i16
+ %i2 = arith.constant 2 : index
+ memref.store %res2, %result[%i2] : memref<?xi16>
+// CHECK: memref.store %[[cst1]], %[[result]][%[[i2]]] : memref<?xi16>
+
+// --- Test negative powers ---
+ %arg3_base = arith.constant 0 : i16
+ %arg3_power = arith.constant -1 : i16
+ %res3 = math.ipowi %arg3_base, %arg3_power : i16
+ %i3 = arith.constant 3 : index
+ memref.store %res3, %result[%i3] : memref<?xi16>
+// No folding for ipowi(0, x) for x < 0:
+// CHECK: %[[res3:.+]] = math.ipowi %[[cst0]], %[[cst_m1]] : i16
+// CHECK: memref.store %[[res3]], %[[result]][%[[i3]]] : memref<?xi16>
+
+ %arg4_base = arith.constant 1 : i16
+ %arg4_power = arith.constant -10 : i16
+ %res4 = math.ipowi %arg4_base, %arg4_power : i16
+ %i4 = arith.constant 4 : index
+ memref.store %res4, %result[%i4] : memref<?xi16>
+// CHECK: memref.store %[[cst1]], %[[result]][%[[i4]]] : memref<?xi16>
+
+ %arg5_base = arith.constant 2 : i16
+ %arg5_power = arith.constant -1 : i16
+ %res5 = math.ipowi %arg5_base, %arg5_power : i16
+ %i5 = arith.constant 5 : index
+ memref.store %res5, %result[%i5] : memref<?xi16>
+// CHECK: memref.store %[[cst0]], %[[result]][%[[i5]]] : memref<?xi16>
+
+ %arg6_base = arith.constant -2 : i16
+ %arg6_power = arith.constant -1 : i16
+ %res6 = math.ipowi %arg6_base, %arg6_power : i16
+ %i6 = arith.constant 6 : index
+ memref.store %res6, %result[%i6] : memref<?xi16>
+// CHECK: memref.store %[[cst0]], %[[result]][%[[i6]]] : memref<?xi16>
+
+ %arg7_base = arith.constant -1 : i16
+ %arg7_power = arith.constant -10 : i16
+ %res7 = math.ipowi %arg7_base, %arg7_power : i16
+ %i7 = arith.constant 7 : index
+ memref.store %res7, %result[%i7] : memref<?xi16>
+// CHECK: memref.store %[[cst1]], %[[result]][%[[i7]]] : memref<?xi16>
+
+ %arg8_base = arith.constant -1 : i16
+ %arg8_power = arith.constant -11 : i16
+ %res8 = math.ipowi %arg8_base, %arg8_power : i16
+ %i8 = arith.constant 8 : index
+ memref.store %res8, %result[%i8] : memref<?xi16>
+// CHECK: memref.store %[[cst_m1]], %[[result]][%[[i8]]] : memref<?xi16>
+
+// --- Test positive powers ---
+ %arg9_base = arith.constant -3 : i16
+ %arg9_power = arith.constant 3 : i16
+ %res9 = math.ipowi %arg9_base, %arg9_power : i16
+ %i9 = arith.constant 9 : index
+ memref.store %res9, %result[%i9] : memref<?xi16>
+// CHECK: memref.store %[[cst_m27]], %[[result]][%[[i9]]] : memref<?xi16>
+
+ %arg10_base = arith.constant 2 : i16
+ %arg10_power = arith.constant 14 : i16
+ %res10 = math.ipowi %arg10_base, %arg10_power : i16
+ %i10 = arith.constant 10 : index
+ memref.store %res10, %result[%i10] : memref<?xi16>
+// CHECK: memref.store %[[cst16384]], %[[result]][%[[i10]]] : memref<?xi16>
+
+ return
+}
+
+// CHECK-LABEL: @ipowi8_fold(
+// CHECK-SAME: %[[result:.+]]: memref<?xi8>
+func.func @ipowi8_fold(%result : memref<?xi8>) {
+// CHECK-DAG: %[[cst0:.+]] = arith.constant 0 : i8
+// CHECK-DAG: %[[cst1:.+]] = arith.constant 1 : i8
+// CHECK-DAG: %[[cst64:.+]] = arith.constant 64 : i8
+// CHECK-DAG: %[[cst_m1:.+]] = arith.constant -1 : i8
+// CHECK-DAG: %[[cst_m27:.+]] = arith.constant -27 : i8
+// CHECK-DAG: %[[i0:.+]] = arith.constant 0 : index
+// CHECK-DAG: %[[i1:.+]] = arith.constant 1 : index
+// CHECK-DAG: %[[i2:.+]] = arith.constant 2 : index
+// CHECK-DAG: %[[i3:.+]] = arith.constant 3 : index
+// CHECK-DAG: %[[i4:.+]] = arith.constant 4 : index
+// CHECK-DAG: %[[i5:.+]] = arith.constant 5 : index
+// CHECK-DAG: %[[i6:.+]] = arith.constant 6 : index
+// CHECK-DAG: %[[i7:.+]] = arith.constant 7 : index
+// CHECK-DAG: %[[i8:.+]] = arith.constant 8 : index
+// CHECK-DAG: %[[i9:.+]] = arith.constant 9 : index
+// CHECK-DAG: %[[i10:.+]] = arith.constant 10 : index
+
+// --- Test power == 0 ---
+ %arg0_base = arith.constant 0 : i8
+ %arg0_power = arith.constant 0 : i8
+ %res0 = math.ipowi %arg0_base, %arg0_power : i8
+ %i0 = arith.constant 0 : index
+ memref.store %res0, %result[%i0] : memref<?xi8>
+// CHECK: memref.store %[[cst1]], %[[result]][%[[i0]]] : memref<?xi8>
+
+ %arg1_base = arith.constant 10 : i8
+ %arg1_power = arith.constant 0 : i8
+ %res1 = math.ipowi %arg1_base, %arg1_power : i8
+ %i1 = arith.constant 1 : index
+ memref.store %res1, %result[%i1] : memref<?xi8>
+// CHECK: memref.store %[[cst1]], %[[result]][%[[i1]]] : memref<?xi8>
+
+ %arg2_base = arith.constant -10 : i8
+ %arg2_power = arith.constant 0 : i8
+ %res2 = math.ipowi %arg2_base, %arg2_power : i8
+ %i2 = arith.constant 2 : index
+ memref.store %res2, %result[%i2] : memref<?xi8>
+// CHECK: memref.store %[[cst1]], %[[result]][%[[i2]]] : memref<?xi8>
+
+// --- Test negative powers ---
+ %arg3_base = arith.constant 0 : i8
+ %arg3_power = arith.constant -1 : i8
+ %res3 = math.ipowi %arg3_base, %arg3_power : i8
+ %i3 = arith.constant 3 : index
+ memref.store %res3, %result[%i3] : memref<?xi8>
+// No folding for ipowi(0, x) for x < 0:
+// CHECK: %[[res3:.+]] = math.ipowi %[[cst0]], %[[cst_m1]] : i8
+// CHECK: memref.store %[[res3]], %[[result]][%[[i3]]] : memref<?xi8>
+
+ %arg4_base = arith.constant 1 : i8
+ %arg4_power = arith.constant -10 : i8
+ %res4 = math.ipowi %arg4_base, %arg4_power : i8
+ %i4 = arith.constant 4 : index
+ memref.store %res4, %result[%i4] : memref<?xi8>
+// CHECK: memref.store %[[cst1]], %[[result]][%[[i4]]] : memref<?xi8>
+
+ %arg5_base = arith.constant 2 : i8
+ %arg5_power = arith.constant -1 : i8
+ %res5 = math.ipowi %arg5_base, %arg5_power : i8
+ %i5 = arith.constant 5 : index
+ memref.store %res5, %result[%i5] : memref<?xi8>
+// CHECK: memref.store %[[cst0]], %[[result]][%[[i5]]] : memref<?xi8>
+
+ %arg6_base = arith.constant -2 : i8
+ %arg6_power = arith.constant -1 : i8
+ %res6 = math.ipowi %arg6_base, %arg6_power : i8
+ %i6 = arith.constant 6 : index
+ memref.store %res6, %result[%i6] : memref<?xi8>
+// CHECK: memref.store %[[cst0]], %[[result]][%[[i6]]] : memref<?xi8>
+
+ %arg7_base = arith.constant -1 : i8
+ %arg7_power = arith.constant -10 : i8
+ %res7 = math.ipowi %arg7_base, %arg7_power : i8
+ %i7 = arith.constant 7 : index
+ memref.store %res7, %result[%i7] : memref<?xi8>
+// CHECK: memref.store %[[cst1]], %[[result]][%[[i7]]] : memref<?xi8>
+
+ %arg8_base = arith.constant -1 : i8
+ %arg8_power = arith.constant -11 : i8
+ %res8 = math.ipowi %arg8_base, %arg8_power : i8
+ %i8 = arith.constant 8 : index
+ memref.store %res8, %result[%i8] : memref<?xi8>
+// CHECK: memref.store %[[cst_m1]], %[[result]][%[[i8]]] : memref<?xi8>
+
+// --- Test positive powers ---
+ %arg9_base = arith.constant -3 : i8
+ %arg9_power = arith.constant 3 : i8
+ %res9 = math.ipowi %arg9_base, %arg9_power : i8
+ %i9 = arith.constant 9 : index
+ memref.store %res9, %result[%i9] : memref<?xi8>
+// CHECK: memref.store %[[cst_m27]], %[[result]][%[[i9]]] : memref<?xi8>
+
+ %arg10_base = arith.constant 2 : i8
+ %arg10_power = arith.constant 6 : i8
+ %res10 = math.ipowi %arg10_base, %arg10_power : i8
+ %i10 = arith.constant 10 : index
+ memref.store %res10, %result[%i10] : memref<?xi8>
+// CHECK: memref.store %[[cst64]], %[[result]][%[[i10]]] : memref<?xi8>
+
+ return
+}
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