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tarantool / luajit / 17641033457
93%
tarantool/master: 93%

Build:
Build:
LAST BUILD BRANCH: skaplun/luajit-performance-tests
DEFAULT BRANCH: tarantool/master
Ran 11 Sep 2025 10:10AM UTC
Jobs 1
Files 89
Run time 1min
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11 Sep 2025 10:02AM UTC coverage: 93.024% (-0.08%) from 93.108%
17641033457

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Buristan
ARM64: Fix LDP/STP fusion (again).

Reported and analyzed by Zhongwei Yao. Fix by Peter Cawley.

(cherry picked from commit b8c6ccd50)

Assume we have stores/loads from the pointer with offset +488 and -16.
The lower bits of the offset are the same as for the offset (488 + 8).
This leads to the incorrect fusion of these instructions:
| str   x20, [x21, 488]
| stur  x20, [x21, -16]
to the following instruction:
| stp   x20, x20, [x21, 488]

This patch prevents this fusion by more accurate offset comparison.

Sergey Kaplun:
* added the description and the test for the problem

Part of tarantool/tarantool#11691

5709 of 6046 branches covered (94.43%)

Branch coverage included in aggregate %.

21787 of 23512 relevant lines covered (92.66%)

3873319.92 hits per line

Uncovered Existing Lines

Lines Coverage ∆ File
1
78.52
-0.08% src/lj_opt_fold.c
2
91.11
-0.32% src/lj_alloc.c
2
92.0
-0.44% src/luajit.c
6
94.74
-4.31% src/lj_str.c
10
77.8
-1.01% src/lj_api.c
Jobs
ID Job ID Ran Files Coverage
1 17641033457.1 11 Sep 2025 10:10AM UTC 89
93.02
GitHub Action Run
Source Files on build 17641033457
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  • List 89
  • Changed 5
  • Source Changed 0
  • Coverage Changed 5
Coverage ∆ File Lines Relevant Covered Missed Hits/Line Branch Hits Branch Misses
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