forked from OSchip/llvm-project
7a6c89427c
When sampleFDO is enabled, people may expect they can use -fno-profile-sample-use to opt-out using sample profile for a certain file. That could be either for debugging purpose or for performance tuning purpose. However, when thinlto is enabled, if a function in file A compiled with -fno-profile-sample-use is imported to another file B compiled with -fprofile-sample-use, the inlined copy of the function in file B may still get its profile annotated. The inconsistency may even introduce profile unused warning because if the target is not compiled with explicit debug information flag, the function in file A won't have its debug information enabled (debug information will be enabled implicitly only when -fprofile-sample-use is used). After it is imported into file B which is compiled with -fprofile-sample-use, profile annotation for the outline copy of the function will fail because the function has no debug information, and that will trigger profile unused warning. We add a new attribute use-sample-profile to control whether a function will use its sample profile no matter for its outline or inline copies. That will make the behavior of -fno-profile-sample-use consistent. Differential Revision: https://reviews.llvm.org/D79959 |
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| .. | ||
| Inputs | ||
| alias-alias.ll | ||
| alias.ll | ||
| appending-var.ll | ||
| asm-output.ll | ||
| available-externally.ll | ||
| cache-dso-local.ll | ||
| cache-dso-local2.ll | ||
| cache-prevailing.ll | ||
| comdat-mixed-lto.ll | ||
| comdat.ll | ||
| common2.ll | ||
| commons.ll | ||
| dead-strip-alias.ll | ||
| dead-strip-fulllto.ll | ||
| diagnostic-handler-remarks-with-hotness.ll | ||
| diagnostic-handler-remarks.ll | ||
| empty-bitcode.test | ||
| export-jumptable.ll | ||
| function-alias-non-prevailing.ll | ||
| ifunc.ll | ||
| ifunc2.ll | ||
| intrinsic.ll | ||
| link-odr-availextern.ll | ||
| linker-redef-thin.ll | ||
| linker-redef.ll | ||
| linkonce.ll | ||
| lit.local.cfg | ||
| load-sample-prof-icp.ll | ||
| load-sample-prof-lto.ll | ||
| load-sample-prof.ll | ||
| local-def-dllimport.ll | ||
| lowertypetests.ll | ||
| lto-unit-check.ll | ||
| mixed_lto.ll | ||
| mod-asm-used.ll | ||
| multi-thinlto.ll | ||
| not-prevailing-alias.ll | ||
| not-prevailing-variables.ll | ||
| not-prevailing-weak-aliasee.ll | ||
| not-prevailing.ll | ||
| setting-dso-local.ll | ||
| symtab-elf.ll | ||
| symtab.ll | ||
| type-checked-load.ll | ||