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[BOLT] [3.12] Python 3.12.7 --enable bolt option not working #124948

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ptr1337 opened this issue Oct 3, 2024 · 1 comment
Open

[BOLT] [3.12] Python 3.12.7 --enable bolt option not working #124948

ptr1337 opened this issue Oct 3, 2024 · 1 comment
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@corona10
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build The build process and cross-build type-bug An unexpected behavior, bug, or error

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@ptr1337
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ptr1337 commented Oct 3, 2024 •
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Bug report

Bug description:

Hi together,

After updating llvm-bolt to 19.1.0 it is not possible to use the --enable-bolt function anymore.
Following can be found in the log:

BOLT-INFO: 0 out of 5950 functions in the binary (0.0%) have non-empty execution profile
BOLT-INSTRUMENTER: Number of indirect call site descriptors: 7119
BOLT-INSTRUMENTER: Number of indirect call target descriptors: 5874
BOLT-INSTRUMENTER: Number of function descriptors: 5874
BOLT-INSTRUMENTER: Number of branch counters: 78400
BOLT-INSTRUMENTER: Number of ST leaf node counters: 40936
BOLT-INSTRUMENTER: Number of direct call counters: 0
BOLT-INSTRUMENTER: Total number of counters: 119336
BOLT-INSTRUMENTER: Total size of counters: 954688 bytes (static alloc memory)
BOLT-INSTRUMENTER: Total size of string table emitted: 133862 bytes in file
BOLT-INSTRUMENTER: Total size of descriptors: 7642344 bytes in file
BOLT-INSTRUMENTER: Profile will be saved to file /tmp/pkg/src/Python-3.12.7/libpython3.12.so.1.0.bolt
BOLT-INFO: 65850 instructions were shortened
BOLT-INFO: removed 134 empty blocks
BOLT-INFO: UCE removed 1155 blocks and 71042 bytes of code
BOLT-INFO: padding code to 0xe00000 to accommodate hot text
BOLT-INFO: output linked against instrumentation runtime library, lib entry point is 0xf90930
BOLT-INFO: clear procedure is 0xf8c380
BOLT-INFO: patched build-id (flipped last bit)
BOLT-INFO: setting __bolt_runtime_start to 0xf908e0
BOLT-INFO: setting __bolt_runtime_fini to 0xf90930
BOLT-INFO: setting __hot_start to 0x800000
BOLT-INFO: setting __hot_end to 0xdf7438
BOLT-ERROR: unable to get new address corresponding to input address 0x1a6e11 in function sre_ucs1_match/1. Consider adding this function to --skip-funcs=...
make[1]: *** [Makefile:856: profile-bolt-stamp] Error 1
make[1]: Leaving directory '/tmp/pkg/src/Python-3.12.7'
make: *** [Makefile:885: bolt-opt] Error 2
==> ERROR: A failure occurred in build().

so, it appears to fail at the instrumentation and suggest to add --skip-funcs=sre_ucs1_match/*.

CPython versions tested on:

3.12

Operating systems tested on:

Linux
@ptr1337 ptr1337 added the type-bug An unexpected behavior, bug, or error label Oct 3, 2024
@picnixz picnixz added the build The build process and cross-build label Oct 3, 2024
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Eclips4 commented Oct 3, 2024

cc @corona10

@corona10 corona10 self-assigned this Oct 4, 2024
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@corona10 @picnixz @ptr1337 @Eclips4