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// RUN: mlir-opt -split-input-file -control-flow-sink %s | FileCheck %s
// CHECK-LABEL: @test_scf_if_sink
// CHECK-SAME: (%[[ARG0:.*]]: i1, %[[ARG1:.*]]: i32)
// CHECK: %[[V0:.*]] = scf.if %[[ARG0]]
// CHECK: %[[V1:.*]] = arith.addi %[[ARG1]], %[[ARG1]]
// CHECK: scf.yield %[[V1]]
// CHECK: else
// CHECK: %[[V1:.*]] = arith.muli %[[ARG1]], %[[ARG1]]
// CHECK: scf.yield %[[V1]]
// CHECK: return %[[V0]]
func.func @test_scf_if_sink(%arg0: i1, %arg1: i32) -> i32 {
%0 = arith.addi %arg1, %arg1 : i32
%1 = arith.muli %arg1, %arg1 : i32
%result = scf.if %arg0 -> i32 {
scf.yield %0 : i32
} else {
scf.yield %1 : i32
}
return %result : i32
}
// -----
func.func private @consume(i32) -> ()
// CHECK-LABEL: @test_scf_if_then_only_sink
// CHECK-SAME: (%[[ARG0:.*]]: i1, %[[ARG1:.*]]: i32)
// CHECK: scf.if %[[ARG0]]
// CHECK: %[[V0:.*]] = arith.addi %[[ARG1]], %[[ARG1]]
// CHECK: call @consume(%[[V0]])
func.func @test_scf_if_then_only_sink(%arg0: i1, %arg1: i32) {
%0 = arith.addi %arg1, %arg1 : i32
scf.if %arg0 {
func.call @consume(%0) : (i32) -> ()
scf.yield
}
return
}
// -----
func.func private @consume(i32) -> ()
// CHECK-LABEL: @test_scf_if_double_sink
// CHECK-SAME: (%[[ARG0:.*]]: i1, %[[ARG1:.*]]: i32)
// CHECK: scf.if %[[ARG0]]
// CHECK: scf.if %[[ARG0]]
// CHECK: %[[V0:.*]] = arith.addi %[[ARG1]], %[[ARG1]]
// CHECK: call @consume(%[[V0]])
func.func @test_scf_if_double_sink(%arg0: i1, %arg1: i32) {
%0 = arith.addi %arg1, %arg1 : i32
scf.if %arg0 {
scf.if %arg0 {
func.call @consume(%0) : (i32) -> ()
scf.yield
}
}
return
}
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