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| 1 | +--TEST-- |
| 2 | +Constant argument optimization |
| 3 | +--DESCRIPTION-- |
| 4 | +Pre-bound arguments that are constant can be burned into the generated |
| 5 | +op_array instead of being passed via the Closure's lexical vars. |
| 6 | +--ENV-- |
| 7 | +A=1 |
| 8 | +--INI-- |
| 9 | +opcache.enable=1 |
| 10 | +opcache.enable_cli=1 |
| 11 | +opcache.optimization_level=-1 |
| 12 | +--FILE-- |
| 13 | +<?php |
| 14 | + |
| 15 | +function f($a, $b) { |
| 16 | + var_dump([$a, $b]); |
| 17 | +} |
| 18 | + |
| 19 | +function g() { |
| 20 | + return 3; |
| 21 | +} |
| 22 | + |
| 23 | +function h($a, $b, $c) { |
| 24 | + var_dump([$a, $b, $c]); |
| 25 | +} |
| 26 | + |
| 27 | +function i($a1, $a2, $a3, $a4, $a5, $a6, $a7, $a8, $a9, $a10, $a11, $a12, $a13, $a14, $a15, $a16, $a17, $a18, $a19, $a20, $a21, $a22, $a23, $a24, $a25, $a26, $a27, $a28, $a29, $a30, $a31, $a32, $a33) { |
| 28 | + var_dump($a33); |
| 29 | +} |
| 30 | + |
| 31 | +function print_lexical_vars($f) { |
| 32 | + $vars = new ReflectionFunction($f)->getClosureUsedVariables(); |
| 33 | + if ($vars === []) { |
| 34 | + echo "no lexical vars\n"; |
| 35 | + } else { |
| 36 | + $varNames = array_keys($vars); |
| 37 | + echo 'lexical vars: ', implode(', ', $varNames), "\n"; |
| 38 | + } |
| 39 | +} |
| 40 | + |
| 41 | +echo "# Non-constant pre-bound argument:\n"; |
| 42 | +$f = f(getenv('A'), ?); |
| 43 | +print_lexical_vars($f); |
| 44 | +$f(2); |
| 45 | + |
| 46 | +echo "# Constant pre-bound argument:\n"; |
| 47 | +$f = f(2, ?); |
| 48 | +print_lexical_vars($f); |
| 49 | +$f(2); |
| 50 | + |
| 51 | +echo "# Constant pre-bound argument (inverted):\n"; |
| 52 | +$f = f(?, 2); |
| 53 | +print_lexical_vars($f); |
| 54 | +$f(1); |
| 55 | + |
| 56 | +echo "# Inlined pre-bound argument:\n"; |
| 57 | +$f = f(g(), ?); |
| 58 | +print_lexical_vars($f); |
| 59 | +$f(2); |
| 60 | + |
| 61 | +echo "# Constexpr pre-bound argument:\n"; |
| 62 | +const B = 4; |
| 63 | +$f = f(B, ?); |
| 64 | +print_lexical_vars($f); |
| 65 | +$f(2); |
| 66 | + |
| 67 | +echo "# Mixed arguments:\n"; |
| 68 | +$f = h(5, getenv('A'), ?); |
| 69 | +print_lexical_vars($f); |
| 70 | +$f(2); |
| 71 | + |
| 72 | +echo "# Constant array pre-bound argument:\n"; |
| 73 | +$f = f(['foo' => 'bar'], ?); |
| 74 | +print_lexical_vars($f); |
| 75 | +$f(2); |
| 76 | + |
| 77 | +echo "# Named arguments:\n"; |
| 78 | +$f = h(1, c: ?, b: ?); |
| 79 | +print_lexical_vars($f); |
| 80 | +$f(2, 3); |
| 81 | + |
| 82 | +echo "# Many arguments (optimization can not be applied for all args) :\n"; |
| 83 | +$f = i(?, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33); |
| 84 | +print_lexical_vars($f); |
| 85 | +$f(33); |
| 86 | + |
| 87 | +?> |
| 88 | +--EXPECT-- |
| 89 | +# Non-constant pre-bound argument: |
| 90 | +lexical vars: a |
| 91 | +array(2) { |
| 92 | + [0]=> |
| 93 | + string(1) "1" |
| 94 | + [1]=> |
| 95 | + int(2) |
| 96 | +} |
| 97 | +# Constant pre-bound argument: |
| 98 | +no lexical vars |
| 99 | +array(2) { |
| 100 | + [0]=> |
| 101 | + int(2) |
| 102 | + [1]=> |
| 103 | + int(2) |
| 104 | +} |
| 105 | +# Constant pre-bound argument (inverted): |
| 106 | +no lexical vars |
| 107 | +array(2) { |
| 108 | + [0]=> |
| 109 | + int(1) |
| 110 | + [1]=> |
| 111 | + int(2) |
| 112 | +} |
| 113 | +# Inlined pre-bound argument: |
| 114 | +no lexical vars |
| 115 | +array(2) { |
| 116 | + [0]=> |
| 117 | + int(3) |
| 118 | + [1]=> |
| 119 | + int(2) |
| 120 | +} |
| 121 | +# Constexpr pre-bound argument: |
| 122 | +lexical vars: a |
| 123 | +array(2) { |
| 124 | + [0]=> |
| 125 | + int(4) |
| 126 | + [1]=> |
| 127 | + int(2) |
| 128 | +} |
| 129 | +# Mixed arguments: |
| 130 | +lexical vars: b |
| 131 | +array(3) { |
| 132 | + [0]=> |
| 133 | + int(5) |
| 134 | + [1]=> |
| 135 | + string(1) "1" |
| 136 | + [2]=> |
| 137 | + int(2) |
| 138 | +} |
| 139 | +# Constant array pre-bound argument: |
| 140 | +no lexical vars |
| 141 | +array(2) { |
| 142 | + [0]=> |
| 143 | + array(1) { |
| 144 | + ["foo"]=> |
| 145 | + string(3) "bar" |
| 146 | + } |
| 147 | + [1]=> |
| 148 | + int(2) |
| 149 | +} |
| 150 | +# Named arguments: |
| 151 | +no lexical vars |
| 152 | +array(3) { |
| 153 | + [0]=> |
| 154 | + int(1) |
| 155 | + [1]=> |
| 156 | + int(3) |
| 157 | + [2]=> |
| 158 | + int(2) |
| 159 | +} |
| 160 | +# Many arguments (optimization can not be applied for all args) : |
| 161 | +lexical vars: a33 |
| 162 | +int(33) |
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