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| author | Dmitry Stogov <dmitry@zend.com> | 2020-08-28 00:02:10 +0300 |
|---|---|---|
| committer | Dmitry Stogov <dmitry@zend.com> | 2020-08-28 00:02:10 +0300 |
| commit | 0866208988a6de520070d76d88f6e5cf158c6a3b (patch) | |
| tree | d4918899ba3e83b9fd6072797ed4b41d144ee1f8 | |
| parent | 972041d68dcffcbc6c896f3420d4e9473c8d0158 (diff) | |
| download | php-git-0866208988a6de520070d76d88f6e5cf158c6a3b.tar.gz | |
Remove useless register allocations
| -rw-r--r-- | ext/opcache/jit/zend_jit_trace.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/ext/opcache/jit/zend_jit_trace.c b/ext/opcache/jit/zend_jit_trace.c index e549ba7ece..5e4a6f4d1f 100644 --- a/ext/opcache/jit/zend_jit_trace.c +++ b/ext/opcache/jit/zend_jit_trace.c @@ -2633,6 +2633,13 @@ static zend_lifetime_interval** zend_jit_trace_allocate_registers(zend_jit_trace if (intervals[def]) { if (!intervals[use]) { intervals[def]->flags |= ZREG_LOAD; + if ((intervals[def]->flags & ZREG_LAST_USE) + && ssa->vars[def].use_chain >= 0 + && ssa->vars[def].use_chain == intervals[def]->range.end) { + /* remove interval used once */ + intervals[def] = NULL; + count--; + } } else if (intervals[def]->reg != intervals[use]->reg) { intervals[def]->flags |= ZREG_LOAD; if (ssa->vars[use].use_chain >= 0) { |