derek.holloway
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49 lines
2.0 KiB
MLIR
49 lines
2.0 KiB
MLIR
// RUN: mlir-opt %s -math-expand-ops=ops=rsqrt -convert-math-to-emitc \
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// RUN: -convert-arith-to-emitc | FileCheck %s
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/// This file checks the conversion of math ops whose EmitC lowering requires
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/// expansion across multiple dialects, s.a. arith.
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/// The FileCheck coverage is intentionally minimal, since the full MathToEmitC
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/// lowering is already covered in
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/// `test/Conversion/MathToEmitC/math-to-emitc.mlir`, their expansion in
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/// `test/Dialect/Math/expand-math.mlir`, but not the combination of the two.
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/// Vector cases excluded: `math.rsqrt` expands through `arith.constant` to
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/// materialize the numerator `1.0`, and ArithToEmitC does not convert
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/// `VectorType` to an EmitC type.
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/// Tensor cases excluded: `math.rsqrt` expands through `arith.divf`, and the
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/// resulting `emitc.div` does not accept tensor operands.
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// CHECK-LABEL: func.func @rsqrt32
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// CHECK-SAME: %[[SRC:.*]]: f32) -> f32
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func.func @rsqrt32(%float: f32) -> (f32) {
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// CHECK-NOT: math.sqrt
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// CHECK: %[[CONST:.*]] = "emitc.constant"() <{value = 1.000000e+00 : f32}>
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// CHECK: %[[SQRT:.*]] = emitc.call_opaque "sqrtf"(%[[SRC]])
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// CHECK: %[[DIV:.*]] = emitc.div %[[CONST]], %[[SQRT]]
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%float_result = math.rsqrt %float : f32
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// CHECK: return %[[DIV]] : f32
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return %float_result : f32
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}
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// CHECK-LABEL: func.func @rsqrt64
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// CHECK-SAME: %[[SRC:.*]]: f64) -> f64
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func.func @rsqrt64(%float: f64) -> (f64) {
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// CHECK-NOT: math.sqrt
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// CHECK: %[[CONST:.*]] = "emitc.constant"() <{value = 1.000000e+00 : f64}>
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// CHECK: %[[SQRT:.*]] = emitc.call_opaque "sqrt"(%[[SRC]])
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// CHECK: %[[DIV:.*]] = emitc.div %[[CONST]], %[[SQRT]]
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%float_result = math.rsqrt %float : f64
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// CHECK: return %[[DIV]] : f64
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return %float_result : f64
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}
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/// `math.sqrt` is only lowered for f32/f64.
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// CHECK-LABEL: func.func @negative_rsqrt16
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func.func @negative_rsqrt16(%float: f16) -> (f16) {
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// CHECK: math.sqrt
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%float_result = math.rsqrt %float : f16
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return %float_result : f16
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}
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