| Issue |
83429
|
| Summary |
-runtime-counter-relocation=true causes pathological compile-time increase
|
| Labels |
new issue
|
| Assignees |
|
| Reporter |
zmodem
|
Attached is a reproducer from Chromium:
[formatutilsgl.ii.gz](https://github.com/llvm/llvm-project/files/14448933/formatutilsgl.ii.gz)
Without runtime runtime counter relocation it compiles in 14 s:
```
$ time clang++ -cc1 -triple thumbv7-unknown-linux-android26 -emit-obj -mrelocation-model pic -pic-level 2 -fhalf-no-semantic-interposition -fmerge-all-constants -fno-delete-null-pointer-checks -mframe-pointer=none -relaxed-aliasing -ffp-contract=off -fno-rounding-math -mconstructor-aliases -funwind-tables=1 -target-cpu generic -target-feature +soft-float-abi -target-feature +vfp2 -target-feature +vfp2sp -target-feature +vfp3 -target-feature +vfp3d16 -target-feature +vfp3d16sp -target-feature +vfp3sp -target-feature -fp16 -target-feature -vfp4 -target-feature -vfp4d16 -target-feature -vfp4d16sp -target-feature -vfp4sp -target-feature -fp-armv8 -target-feature -fp-armv8d16 -target-feature -fp-armv8d16sp -target-feature -fp-armv8sp -target-feature -fullfp16 -target-feature +fp64 -target-feature +d32 -target-feature +neon -target-feature -sha2 -target-feature -aes -target-feature -fp16fml -target-abi aapcs-linux -mfloat-abi soft -debugger-tuning=gdb -gsimple-template-names=simple -debug-forward-template-params -ffunction-sections -fdata-sections -fno-unique-section-names -O2 -std=c++20 -fdeprecated-macro -fvisibility=hidden -fvisibility-inlines-hidden -femulated-tls -stack-protector 1 -ftrivial-auto-var-init=pattern -fno-rtti -fno-signed-char -fgnuc-version=4.2.1 -fno-implicit-modules -fskip-odr-check-in-gmf -Qn -vectorize-loops -vectorize-slp -mllvm -split-threshold-for-reg-with-hint=0 -fcomplete-member-pointers -o /tmp/a.o /tmp/formatutilsgl.ii -w -fprofile-instrument=clang -fcoverage-mapping -mllvm -limited-coverage-experimental=true
real 0m14.071s
user 0m13.846s
sys 0m0.225s
```
With runtime counter relocation it takes 8 minutes:
```
$ time clang++ -cc1 -triple thumbv7-unknown-linux-android26 -emit-obj -mrelocation-model pic -pic-level 2 -fhalf-no-semantic-interposition -fmerge-all-constants -fno-delete-null-pointer-checks -mframe-pointer=none -relaxed-aliasing -ffp-contract=off -fno-rounding-math -mconstructor-aliases -funwind-tables=1 -target-cpu generic -target-feature +soft-float-abi -target-feature +vfp2 -target-feature +vfp2sp -target-feature +vfp3 -target-feature +vfp3d16 -target-feature +vfp3d16sp -target-feature +vfp3sp -target-feature -fp16 -target-feature -vfp4 -target-feature -vfp4d16 -target-feature -vfp4d16sp -target-feature -vfp4sp -target-feature -fp-armv8 -target-feature -fp-armv8d16 -target-feature -fp-armv8d16sp -target-feature -fp-armv8sp -target-feature -fullfp16 -target-feature +fp64 -target-feature +d32 -target-feature +neon -target-feature -sha2 -target-feature -aes -target-feature -fp16fml -target-abi aapcs-linux -mfloat-abi soft -debugger-tuning=gdb -gsimple-template-names=simple -debug-forward-template-params -ffunction-sections -fdata-sections -fno-unique-section-names -O2 -std=c++20 -fdeprecated-macro -fvisibility=hidden -fvisibility-inlines-hidden -femulated-tls -stack-protector 1 -ftrivial-auto-var-init=pattern -fno-rtti -fno-signed-char -fgnuc-version=4.2.1 -fno-implicit-modules -fskip-odr-check-in-gmf -Qn -vectorize-loops -vectorize-slp -mllvm -split-threshold-for-reg-with-hint=0 -fcomplete-member-pointers -o /tmp/a.o /tmp/formatutilsgl.ii -w -fprofile-instrument=clang -fcoverage-mapping -mllvm -limited-coverage-experimental=true -mllvm -runtime-counter-relocation=true
real 8m15.434s
user 8m15.066s
sys 0m0.313s
```
(This uses Clang built at a0b3dbaf4b3c01dc7f0a83fce059a26360b58eb2)
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