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Ilija Tovilo 6173a9a109 VAR|TMP overhaul (GH-20628) 
The aim of this PR is twofold:

- Reduce the number of highly similar TMP|VAR handlers
- Avoid ZVAL_DEREF in most of these cases

This is achieved by guaranteeing that all zend_compile_expr() calls, as well as
all other compile calls with BP_VAR_{R,IS}, will result in a TMP variable. This
implies that the result will not contain an IS_INDIRECT or IS_REFERENCE value,
which was mostly already the case, with two exceptions:

- Calls to return-by-reference functions. Because return-by-reference functions
  are quite rare, this is solved by delegating the DEREF to the RETURN_BY_REF
  handler, which will examine the stack to check whether the caller expects a
  VAR or TMP to understand whether the DEREF is needed. Internal functions will
  also need to adjust by calling the zend_return_unwrap_ref() function.

- By-reference assignments, including both $a = &$b, as well as $a = [&$b]. When
  the result of these expressions is used in a BP_VAR_R context, the reference
  is unwrapped via a ZEND_QM_ASSIGN opcode beforehand. This is exceptionally
  rare.

Closes GH-20628
2026-01-31 19:44:56 +01:00
..
assign_obj_001.phpt
typo
2022-08-29 17:12:57 +03:00
assign_obj_op_001.phpt
Fix memory leak
2022-11-07 11:07:58 +03:00
assign_op_001.phpt
Fix GH-8329 Print true/false instead of bool in error and debug messages (#8385)
2023-01-23 10:52:14 +01:00
assign_op_002.phpt
Deprecate implicit nullable parameter types (#12959)
2024-03-13 21:40:26 +01:00
block_pass_001.phpt
Migrate skip checks to --EXTENSIONS--, p3
2021-04-03 15:23:25 +02:00
block_pass_002.phpt
Migrate skip checks to --EXTENSIONS--, p3
2021-04-03 15:23:25 +02:00
block_pass_003.phpt
Zend: Warn when destructuring non-array values (#19439)
2025-08-29 16:06:34 +01:00
block_pass_004.phpt
Fixed incorrect QM_ASSIGN elimination
2023-07-24 15:42:30 +03:00
block_pass_005.phpt
Fixed incorrect QM_ASSIGN elimination
2023-07-31 14:50:13 +03:00
block_pass_006.phpt
Fixed inorrect QM_ASSIGN elimination
2023-11-01 09:54:58 +03:00
block_pass_007.phpt
VAR|TMP overhaul (GH-20628)
2026-01-31 19:44:56 +01:00
coalesce_002.phpt
Fix memory leak
2022-05-23 13:33:20 +03:00
coalesce.phpt
Add zend_test.observer.enabled=0 to opcache tests asserting specific TMP count
2024-04-08 20:16:35 +02:00
dce_001.phpt
Add zend_test.observer.enabled=0 to opcache tests asserting specific TMP count
2024-04-08 20:16:35 +02:00
dce_002.phpt
Add zend_test.observer.enabled=0 to opcache tests asserting specific TMP count
2024-04-08 20:16:35 +02:00
dce_003.phpt
Add zend_test.observer.enabled=0 to opcache tests asserting specific TMP count
2024-04-08 20:16:35 +02:00
dce_004.phpt
Add zend_test.observer.enabled=0 to opcache tests asserting specific TMP count
2024-04-08 20:16:35 +02:00
dce_005.phpt
Add zend_test.observer.enabled=0 to opcache tests asserting specific TMP count
2024-04-08 20:16:35 +02:00
dce_006.phpt
VAR|TMP overhaul (GH-20628)
2026-01-31 19:44:56 +01:00
dce_007.phpt
Add zend_test.observer.enabled=0 to opcache tests asserting specific TMP count
2024-04-08 20:16:35 +02:00
dce_008.phpt
Add zend_test.observer.enabled=0 to opcache tests asserting specific TMP count
2024-04-08 20:16:35 +02:00
dce_009.phpt
Implement GH-15680: Enhance zend_dump_op_array to Properly Represent Non-Printable Characters in String Literals
2024-12-27 12:53:02 +01:00
dce_010.phpt
Merge branch 'PHP-8.0'
2021-04-08 17:06:40 +02:00
dce_011.phpt
Fixed incorrect DCE for ADD_ARRAY_ELEMENT instruction
2021-11-25 13:33:26 +03:00
dce_012.phpt
Fixed incorrect DCE of a constructor call
2021-12-06 15:59:30 +03:00
dce_013.phpt
Fixed incorrect DCE for FREE
2022-02-28 11:44:22 +03:00
dce_014.phpt
Fix assertion
2023-12-25 13:22:03 +03:00
fe_fetch_001.phpt
Fix SSA reconstruction when body of "foreach" loop is removed
2022-08-01 14:00:19 +03:00
gh8074.phpt
Fix GH-8074: Wrong type inference of range() result
2022-02-22 10:14:54 +01:00
gh8140a.phpt
Deprecate ${} string interpolation
2022-05-05 10:14:56 +02:00
gh8140b.phpt
Deprecate ${} string interpolation
2022-05-05 10:14:56 +02:00
gh10008.phpt
Fixed GH-10008: Narrowing occurred during type inference of ZEND_ADD_ARRAY_ELEMENT
2023-11-02 08:09:29 +03:00
gh10801.phpt
Fix GH-10801: Named arguments in CTE functions cause a segfault
2023-03-10 19:22:44 +01:00
gh11170.phpt
VAR|TMP overhaul (GH-20628)
2026-01-31 19:44:56 +01:00
gh11245_1.phpt
Add zend_test.observer.enabled=0 to opcache tests asserting specific TMP count
2024-04-08 20:16:35 +02:00
gh11245_2.phpt
Merge branch 'PHP-8.4' of github.com:php/php-src into PHP-8.5
2026-01-15 16:15:29 +01:00
gh14873.phpt
VAR|TMP overhaul (GH-20628)
2026-01-31 19:44:56 +01:00
gh18107_1.phpt
VAR|TMP overhaul (GH-20628)
2026-01-31 19:44:56 +01:00
gh18107_2.phpt
VAR|TMP overhaul (GH-20628)
2026-01-31 19:44:56 +01:00
gh19792.phpt
Fix GH-19792: SCCP causes UAF for return value if both warning and exception are triggered
2025-09-11 19:35:53 +02:00
inference_001.phpt
Improve type narrowing fix
2022-04-10 11:22:36 +02:00
inference_002.phpt
Improve illegal offset error messages (#10504)
2023-02-08 12:11:41 +00:00
inference_003.phpt
Fixed assertion when check "instanceof" on unlinked class
2021-12-27 12:02:13 +03:00
inference_004.phpt
Fix type narrowing warning during type inference of ZEND_FETCH_DIM_W
2022-04-25 11:16:10 +03:00
inference_005.phpt
Fix type inference
2022-04-25 12:15:55 +03:00
inference_006.phpt
Fix type inference
2022-05-11 12:09:11 +03:00
inference_007.phpt
Fix type inference
2022-05-11 12:39:26 +03:00
inference_008.phpt
Fix type inference
2022-05-16 12:41:25 +03:00
inference_009.phpt
Fix type inference
2022-06-06 11:13:53 +03:00
inference_010.phpt
Fix type inference
2022-06-14 10:20:45 +03:00
inference_011.phpt
Fix type inference
2022-06-14 11:59:35 +03:00
inference_012.phpt
Fix type inference for FETCH_DI_UNSET
2022-07-18 13:14:15 +03:00
inference_013.phpt
Fix type inference
2022-07-18 14:20:06 +03:00
inference_014.phpt
Fix type inference
2022-07-25 15:53:06 +03:00
inference_015.phpt
Fix type inference
2022-08-22 21:11:39 +03:00
inference_016.phpt
[RFC] Path to Saner Increment/Decrement operators (#10358)
2023-07-17 15:51:24 +01:00
inference_017.phpt
Drop range inference for IS_NULL/IS_FALSE/IS_TRUE.
2022-08-23 11:22:31 +03:00
inference_018.phpt
Drop range inference for IS_NULL/IS_FALSE/IS_TRUE.
2022-08-23 11:22:31 +03:00
inference_019.phpt
[RFC] Path to Saner Increment/Decrement operators (#10358)
2023-07-17 15:51:24 +01:00
inference_020.phpt
Fix SSA construction and type inference
2022-09-19 15:45:34 +03:00
inference_021.phpt
Fixed type inference
2022-09-26 12:19:12 +03:00
inference_022.phpt
Fixed GH-12511: Use must be in next opline assertion with patched infection
2023-10-31 07:51:36 +03:00
inference_023.phpt
Fixed GH-8251: Narrowing occurred during type inference of ZEND_FETCH_DIM_W
2023-11-28 22:49:39 +03:00
inference_024.phpt
Fixed type inference
2023-12-01 17:08:16 +03:00
inference_frameless.phpt
Merge branch 'PHP-8.3'
2024-04-08 20:22:02 +02:00
inline_001.phpt
Fix memory leak
2022-06-20 10:59:37 +03:00
isset_var_001.phpt
Fix ISSET_ISEMPTY_VAR missoptimization
2022-04-25 13:31:01 +03:00
jmp_001.phpt
VAR|TMP overhaul (GH-20628)
2026-01-31 19:44:56 +01:00
jmp_002.phpt
Fix incorrect JMP optimization
2021-12-10 01:39:28 +03:00
match_001.phpt
Fix memory leak
2022-10-17 15:08:21 +03:00
match_002.phpt
Fix memory leak because of incorrect optimization
2022-12-26 13:20:55 +03:00
match_003.phpt
Fix incorrect optimization
2023-03-27 17:57:54 +03:00
nullsafe_001.phpt
Add zend_test.observer.enabled=0 to opcache tests asserting specific TMP count
2024-04-08 20:16:35 +02:00
nullsafe_002.phpt
Fix nightly failure in test variation due to number of temp variables varying when observers are enabled
2024-07-27 16:37:01 +02:00
prop_types.phpt
Fix nightly failure in test variation due to number of temp variables varying when observers are enabled
2024-07-27 16:37:01 +02:00
sccp_001.phpt
Add zend_test.observer.enabled=0 to opcache tests asserting specific TMP count
2024-04-08 20:16:35 +02:00
sccp_002.phpt
Add zend_test.observer.enabled=0 to opcache tests asserting specific TMP count
2024-04-08 20:16:35 +02:00
sccp_003.phpt
Add zend_test.observer.enabled=0 to opcache tests asserting specific TMP count
2024-04-08 20:16:35 +02:00
sccp_004.phpt
Add zend_test.observer.enabled=0 to opcache tests asserting specific TMP count
2024-04-08 20:16:35 +02:00
sccp_005.phpt
Add zend_test.observer.enabled=0 to opcache tests asserting specific TMP count
2024-04-08 20:16:35 +02:00
sccp_006.phpt
Add zend_test.observer.enabled=0 to opcache tests asserting specific TMP count
2024-04-08 20:16:35 +02:00
sccp_007.phpt
Add zend_test.observer.enabled=0 to opcache tests asserting specific TMP count
2024-04-08 20:16:35 +02:00
sccp_008.phpt
Add zend_test.observer.enabled=0 to opcache tests asserting specific TMP count
2024-04-08 20:16:35 +02:00
sccp_009.phpt
Add zend_test.observer.enabled=0 to opcache tests asserting specific TMP count
2024-04-08 20:16:35 +02:00
sccp_010.phpt
Add zend_test.observer.enabled=0 to opcache tests asserting specific TMP count
2024-04-08 20:16:35 +02:00
sccp_011.phpt
Add zend_test.observer.enabled=0 to opcache tests asserting specific TMP count
2024-04-08 20:16:35 +02:00
sccp_012.phpt
Add zend_test.observer.enabled=0 to opcache tests asserting specific TMP count
2024-04-08 20:16:35 +02:00
sccp_013.phpt
Migrate skip checks to --EXTENSIONS--, p3
2021-04-03 15:23:25 +02:00
sccp_014.phpt
Migrate skip checks to --EXTENSIONS--, p3
2021-04-03 15:23:25 +02:00
sccp_015.phpt
Migrate skip checks to --EXTENSIONS--, p3
2021-04-03 15:23:25 +02:00
sccp_016.phpt
Add zend_test.observer.enabled=0 to opcache tests asserting specific TMP count
2024-04-08 20:16:35 +02:00
sccp_017.phpt
Add zend_test.observer.enabled=0 to opcache tests asserting specific TMP count
2024-04-08 20:16:35 +02:00
sccp_018.phpt
Migrate skip checks to --EXTENSIONS--, p3
2021-04-03 15:23:25 +02:00
sccp_019.phpt
Add zend_test.observer.enabled=0 to opcache tests asserting specific TMP count
2024-04-08 20:16:35 +02:00
sccp_020.phpt
Migrate skip checks to --EXTENSIONS--, p3
2021-04-03 15:23:25 +02:00
sccp_021.phpt
Migrate skip checks to --EXTENSIONS--, p3
2021-04-03 15:23:25 +02:00
sccp_022.phpt
VAR|TMP overhaul (GH-20628)
2026-01-31 19:44:56 +01:00
sccp_023.phpt
Migrate skip checks to --EXTENSIONS--, p3
2021-04-03 15:23:25 +02:00
sccp_024.phpt
Add zend_test.observer.enabled=0 to opcache tests asserting specific TMP count
2024-04-08 20:16:35 +02:00
sccp_025.phpt
Migrate skip checks to --EXTENSIONS--, p3
2021-04-03 15:23:25 +02:00
sccp_026.phpt
Add zend_test.observer.enabled=0 to opcache tests asserting specific TMP count
2024-04-08 20:16:35 +02:00
sccp_027.phpt
Migrate skip checks to --EXTENSIONS--, p3
2021-04-03 15:23:25 +02:00
sccp_028.phpt
Migrate skip checks to --EXTENSIONS--, p3
2021-04-03 15:23:25 +02:00
sccp_029.phpt
Migrate skip checks to --EXTENSIONS--, p3
2021-04-03 15:23:25 +02:00
sccp_030.phpt
Migrate skip checks to --EXTENSIONS--, p3
2021-04-03 15:23:25 +02:00
sccp_031.phpt
Add zend_test.observer.enabled=0 to opcache tests asserting specific TMP count
2024-04-08 20:16:35 +02:00
sccp_032.phpt
VAR|TMP overhaul (GH-20628)
2026-01-31 19:44:56 +01:00
sccp_033.phpt
Migrate skip checks to --EXTENSIONS--, p3
2021-04-03 15:23:25 +02:00
sccp_034.phpt
Fix incorrect optimization that leads to memory leak
2021-12-13 13:08:05 +03:00
sccp_035.phpt
Fix memory leak in SCCP
2021-12-24 13:10:22 +03:00
sccp_036.phpt
Fixed NAN handling in SCCP
2022-01-10 19:39:19 +03:00
sccp_037.phpt
Fix too aggressive DCE that leads to memory leak
2022-01-28 12:17:46 +03:00
sccp_038.phpt
Enact follow-up phase of the "Path to Saner Increment/Decrement operators" RFC (#19374)
2025-08-23 14:36:39 +01:00
sccp_039.phpt
Fix incorrect constant propagation for VERIFY_RETURN_TYPE
2022-04-18 10:33:52 +03:00
sccp_040.phpt
Fix memory leak
2022-05-16 13:45:31 +03:00
sccp_041.phpt
Fix incorrect constant propagation for VERIFY_RETURN_TYPE
2022-06-20 11:30:07 +03:00
sccp_exception2.inc
Fix handling of sccp exceptions
2020-11-27 17:44:30 +01:00
sccp_exception2.phpt
Respect strict_types during sccp function call evaluation
2020-11-27 20:24:00 +01:00
sccp_exception3.phpt
Respect strict_types during sccp function call evaluation
2020-11-27 20:24:00 +01:00
sccp_exception.phpt
Handle exceptions during SCCP function evaluation
2020-11-27 17:00:12 +01:00
sccp_in_array.phpt
Only replace IN_ARRAY result type for JMPZ/JMPNZ
2020-11-30 11:18:21 +01:00
tmp_001.phpt
Reorder optimization passes to avoid miss-optimization
2022-04-25 13:09:05 +03:00
type_inference_class_consts1.phpt
Add zend_test.observer.enabled=0 to more tests
2024-04-10 01:17:10 +02:00
type_inference_class_consts2.phpt
Add zend_test.observer.enabled=0 to more tests
2024-04-10 01:17:10 +02:00
type_inference_class_consts3.phpt
Add zend_test.observer.enabled=0 to more tests
2024-04-10 01:17:10 +02:00
type_inference_class_consts4.phpt
Add zend_test.observer.enabled=0 to more tests
2024-04-10 01:17:10 +02:00
type_inference_final_class.phpt
VAR|TMP overhaul (GH-20628)
2026-01-31 19:44:56 +01:00
verify_return_type.phpt
XFAIL: Return types cannot be inferred through prototypes
2021-10-06 17:21:02 +03:00