mirror of
https://github.com/php/php-src.git
synced 2026-04-17 21:11:02 +02:00
3e164dee99
* JIT/AArch64: Support shifted immediate As pointed out by MikePall in [1], shifted immediate value is supported. See [2]. For example, `add x0, x1, #4096` would be encoded by DynASM into `add x0, x1, #1, lsl #12` directly. In this patch, a helper is added to check whether an immediate value is in the two allowed ranges: (1) 0 to 4095, and (2) LSL #12 on all the values from the first range. Note that this helper works for add/adds/sub/subs/cmp/cmn instructions. [1] https://github.com/LuaJIT/LuaJIT/pull/718 [2] https://github.com/LuaJIT/LuaJIT/blob/v2.1/dynasm/dasm_arm64.lua#L342 Change-Id: I4870048b9b8e6c429b73a4803af2a3b2d5ec0fbb * Deprecatd CMP_IMM/ADD_SUB_IMM and add test cases Macros CMP_IMM and ADD_SUB_IMM are deprecated and instead we use this helper to guard the immediate encoding. Add two 64-bit only test cases, since 64-bit integers are used and tested inside. Change-Id: I0b42d4617b40372e2f4ce5b6ad31a4ddb7d89e49
76 lines
1.5 KiB
PHP
76 lines
1.5 KiB
PHP
--TEST--
|
|
JIT CMP: 005 Comparisons with immediate values
|
|
--INI--
|
|
opcache.enable=1
|
|
opcache.enable_cli=1
|
|
opcache.file_update_protection=0
|
|
opcache.jit_buffer_size=1M
|
|
opcache.protect_memory=1
|
|
--EXTENSIONS--
|
|
opcache
|
|
--SKIPIF--
|
|
<?php
|
|
if (PHP_INT_SIZE != 8) die("skip: 64-bit only"); ?>
|
|
--FILE--
|
|
<?php
|
|
function foo($a) {
|
|
$b = 0;
|
|
$c = 31;
|
|
$d = 0xfff;
|
|
$e = 0x1000;
|
|
$f = 0xfff000;
|
|
$g = 0xff001; // Cannot be encoded into imm12 field
|
|
$h = 0x1000000; // Cannot be encoded into imm12 field
|
|
$i = 0xf12345678; // Cannot be encoded into imm12 field
|
|
|
|
var_dump($a > $b ? 1 : 0);
|
|
var_dump($a > $c ? 1 : 0);
|
|
var_dump($a > $d ? 1 : 0);
|
|
var_dump($a > $e ? 1 : 0);
|
|
var_dump($a > $f ? 1 : 0);
|
|
var_dump($a > $g ? 1 : 0);
|
|
var_dump($a > $h ? 1 : 0);
|
|
var_dump($a > $i ? 1 : 0);
|
|
}
|
|
|
|
function bar($a) {
|
|
$b = 0;
|
|
$c = -31;
|
|
$d = -4095; // negation of 0xfff
|
|
$e = -4096; // negation of 0x1000
|
|
$f = -16773120; // negation of 0xfff000
|
|
$g = -1044481; // negation of 0xff001
|
|
$h = -16777216; // negation of 0x1000000
|
|
$i = -64729929336; // negation of 0xf12345678
|
|
|
|
var_dump($a > $b ? 1 : 0);
|
|
var_dump($a > $c ? 1 : 0);
|
|
var_dump($a > $d ? 1 : 0);
|
|
var_dump($a > $e ? 1 : 0);
|
|
var_dump($a > $f ? 1 : 0);
|
|
var_dump($a > $g ? 1 : 0);
|
|
var_dump($a > $h ? 1 : 0);
|
|
var_dump($a > $i ? 1 : 0);
|
|
}
|
|
|
|
foo(42);
|
|
bar(42);
|
|
?>
|
|
--EXPECT--
|
|
int(1)
|
|
int(1)
|
|
int(0)
|
|
int(0)
|
|
int(0)
|
|
int(0)
|
|
int(0)
|
|
int(0)
|
|
int(1)
|
|
int(1)
|
|
int(1)
|
|
int(1)
|
|
int(1)
|
|
int(1)
|
|
int(1)
|
|
int(1)
|