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authorNikita Popov <nikita.ppv@gmail.com>2020-09-01 12:22:56 +0200
committerNikita Popov <nikita.ppv@gmail.com>2020-09-01 12:25:00 +0200
commit37612936a1ede4e656514dc62c42a5e42e976046 (patch)
treef64dd1535d6ad176a39aa3666ac740a5c67adc35 /ext/opcache
parent9560e3ba7ab64e3fb9815253e33095d11e83e978 (diff)
downloadphp-git-37612936a1ede4e656514dc62c42a5e42e976046.tar.gz
Fix pi node removal when removing predecessor
We can't just remove the uses, we need to replace uses. The test case only fails on master with SSA integrity violations, but I believe the root issue also existed previously.
Diffstat (limited to 'ext/opcache')
-rw-r--r--ext/opcache/Optimizer/zend_ssa.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/ext/opcache/Optimizer/zend_ssa.c b/ext/opcache/Optimizer/zend_ssa.c
index fdc383128b..89dfe57914 100644
--- a/ext/opcache/Optimizer/zend_ssa.c
+++ b/ext/opcache/Optimizer/zend_ssa.c
@@ -1388,7 +1388,7 @@ void zend_ssa_remove_predecessor(zend_ssa *ssa, int from, int to) /* {{{ */
for (phi = next_ssa_block->phis; phi; phi = phi->next) {
if (phi->pi >= 0) {
if (phi->pi == from) {
- zend_ssa_remove_uses_of_var(ssa, phi->ssa_var);
+ zend_ssa_rename_var_uses(ssa, phi->ssa_var, phi->sources[0], /* update_types */ 0);
zend_ssa_remove_phi(ssa, phi);
}
} else {