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63f6a2f30d
Propagating array element values is done by load-simplification and redundant-load-elimination. So ArrayElementPropagation is not needed anymore. ArrayElementPropagation also replaced `Array.append(contentsOf:)` with individual `Array.append` calls. This optimization is removed, because the benefit is questionably, anyway. In most cases it resulted in a code size increase.
64 lines
1.4 KiB
Swift
64 lines
1.4 KiB
Swift
// RUN: %empty-directory(%t)
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// RUN: %target-build-swift -O %s -o %t/a.out
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// RUN: %target-build-swift -O %s -emit-sil | %FileCheck %s
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// RUN: %target-codesign %t/a.out
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// RUN: %target-run %t/a.out | %FileCheck --check-prefix=CHECK-OUTPUT %s
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// REQUIRES: executable_test
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// REQUIRES: optimized_stdlib,swift_stdlib_no_asserts
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var a = [27]
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var gg = ""
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@inline(never)
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func use(_ s: String) {
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gg = s
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}
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// CHECK-LABEL: sil hidden [noinline] @$s25array_element_propagation10testAppendyySaySiGzF :
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// CHECK-NOT: load
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// CHECK: } // end sil function '$s25array_element_propagation10testAppendyySaySiGzF'
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@inline(never)
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func testAppend(_ arr: inout [Int]) {
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let a = [28]
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arr += [a[0]]
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}
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// CHECK-LABEL: sil hidden [noinline] @$s25array_element_propagation8testLoopyyF :
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// CHECK-NOT: load
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// CHECK: } // end sil function '$s25array_element_propagation8testLoopyyF'
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@inline(never)
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func testLoop() {
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let a = ["xyz"]
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for _ in 0..<1000 {
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use(a[0])
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}
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}
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// CHECK-LABEL: sil hidden [noinline] @$s25array_element_propagation12testNonConstyySSF :
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// CHECK-NOT: load
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// CHECK: } // end sil function '$s25array_element_propagation12testNonConstyySSF'
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@inline(never)
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func testNonConst(_ s: String) {
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let a = [s]
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for _ in 0..<1000 {
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use(a[0])
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}
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}
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// CHECK-OUTPUT: [27, 28]
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testAppend(&a)
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print(a)
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// CHECK-OUTPUT: xyz
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testLoop()
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print(gg)
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// CHECK-OUTPUT: abc
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testNonConst("abc")
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print(gg)
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