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80 lines
1.9 KiB
Swift
80 lines
1.9 KiB
Swift
// RUN: %target-swift-frontend -emit-silgen %s | FileCheck %s
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// CHECK-LABEL: sil @main
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// CHECK: bb0({{%.*}} : $Int32, {{%.*}} : $UnsafeMutablePointer<UnsafeMutablePointer<Int8>>):
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// -- initialize x
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// CHECK: [[X:%[0-9]+]] = global_addr @_Tv8toplevel1xSi : $*Int
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// CHECK: integer_literal $Builtin.Int2048, 999
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// CHECK: store {{.*}} to [[X]]
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var x = 999
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func print_x() {
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println(x)
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}
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// -- assign x
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// CHECK: integer_literal $Builtin.Int2048, 0
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// CHECK: assign {{.*}} to [[X]]
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// CHECK: [[PRINT_X:%[0-9]+]] = function_ref @_TF8toplevel7print_xFT_T_ :
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// CHECK: apply [[PRINT_X]]
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x = 0
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print_x()
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// <rdar://problem/19770775> Deferred initialization of let bindings rejected at top level in playground
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// CHECK: [[COUNTADDR:%[0-9]+]] = global_addr @_Tv8toplevel5countSi : $*Int
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// CHECK-NEXT: [[COUNTMUI:%[0-9]+]] = mark_uninitialized [var] [[COUNTADDR]] : $*Int
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let count: Int
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// CHECK: cond_br
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if x == 5 {
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count = 0
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// CHECK: assign {{.*}} to [[COUNTMUI]]
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// CHECK: br [[MERGE:bb[0-9]+]]
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} else {
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count = 10
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// CHECK: assign {{.*}} to [[COUNTMUI]]
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// CHECK: br [[MERGE]]
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}
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// CHECK: [[MERGE]]:
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// CHECK: load [[COUNTMUI]]
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println(count)
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var y : Int
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func print_y() {
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println(y)
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}
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// -- assign y
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// CHECK: [[Y1:%[0-9]+]] = global_addr @_Tv8toplevel1ySi : $*Int
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// CHECK: [[Y:%[0-9]+]] = mark_uninitialized [var] [[Y1]]
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// CHECK: assign {{.*}} to [[Y]]
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// CHECK: [[PRINT_Y:%[0-9]+]] = function_ref @_TF8toplevel7print_yFT_T_
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// CHECK: [[RET:%[0-9]+]] = struct $Int32
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// CHECK: return [[RET]]
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y = 1
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print_y()
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// CHECK-LABEL: sil hidden @_TF8toplevel7print_xFT_T_
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// CHECK-LABEL: sil hidden @_TF8toplevel7print_yFT_T_
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// CHECK: sil hidden @_TF8toplevel13testGlobalCSEFT_Si
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// CHECK-NOT: global_addr
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// CHECK: %0 = global_addr @_Tv8toplevel1xSi : $*Int
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// CHECK-NOT: global_addr
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// CHECK: return
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func testGlobalCSE() -> Int {
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// We should only emit one global_addr in this function.
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return x + x
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}
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