LLVM: llvm::GlobalValueSummary::GVFlags Struct Reference (original) (raw)
Group flags (Linkage, NotEligibleToImport, etc.) as a bitfield. More...
#include "[llvm/IR/ModuleSummaryIndex.h](ModuleSummaryIndex%5F8h%5Fsource.html)"
| Public Attributes | |
|---|---|
| unsigned | Linkage: 4 |
| The linkage type of the associated global value. | |
| unsigned | Visibility: 2 |
| Indicates the visibility. | |
| unsigned | NotEligibleToImport: 1 |
| Indicate if the global value cannot be imported (e.g. | |
| unsigned | Live: 1 |
| In per-module summary, indicate that the global value must be considered a live root for index-based liveness analysis. | |
| unsigned | DSOLocal: 1 |
| Indicates that the linker resolved the symbol to a definition from within the same linkage unit. | |
| unsigned | CanAutoHide: 1 |
| In the per-module summary, indicates that the global value is linkonce_odr and global unnamed addr (so eligible for auto-hiding via hidden visibility). | |
| unsigned | ImportType: 1 |
| This field is written by the ThinLTO indexing step to postlink combined summary. |
Group flags (Linkage, NotEligibleToImport, etc.) as a bitfield.
Definition at line 506 of file ModuleSummaryIndex.h.
◆ CanAutoHide
unsigned llvm::GlobalValueSummary::GVFlags::CanAutoHide
In the per-module summary, indicates that the global value is linkonce_odr and global unnamed addr (so eligible for auto-hiding via hidden visibility).
In the combined summary, indicates that the prevailing linkonce_odr copy can be auto-hidden via hidden visibility when it is upgraded to weak_odr in the backend. This is legal when all copies are eligible for auto-hiding (i.e. all copies were linkonce_odr global unnamed addr. If any copy is not (e.g. it was originally weak_odr, we cannot auto-hide the prevailing copy as it means the symbol was externally visible.
Definition at line 543 of file ModuleSummaryIndex.h.
Referenced by GVFlags().
◆ DSOLocal
unsigned llvm::GlobalValueSummary::GVFlags::DSOLocal
Indicates that the linker resolved the symbol to a definition from within the same linkage unit.
Definition at line 532 of file ModuleSummaryIndex.h.
Referenced by GVFlags().
◆ ImportType
unsigned llvm::GlobalValueSummary::GVFlags::ImportType
This field is written by the ThinLTO indexing step to postlink combined summary.
The value is interpreted as 'ImportKind' enum defined above.
Definition at line 547 of file ModuleSummaryIndex.h.
Referenced by GVFlags().
◆ Linkage
unsigned llvm::GlobalValueSummary::GVFlags::Linkage
The linkage type of the associated global value.
One use is to flag values that have local linkage types and need to have module identifier appended before placing into the combined index, to disambiguate from other values with the same name. In the future this will be used to update and optimize linkage types based on global summary-based analysis.
Definition at line 514 of file ModuleSummaryIndex.h.
Referenced by GVFlags().
◆ Live
unsigned llvm::GlobalValueSummary::GVFlags::Live
In per-module summary, indicate that the global value must be considered a live root for index-based liveness analysis.
Used for special LLVM values such as llvm.global_ctors that the linker does not know about.
In combined summary, indicate that the global value is live.
Definition at line 528 of file ModuleSummaryIndex.h.
Referenced by GVFlags().
◆ NotEligibleToImport
unsigned llvm::GlobalValueSummary::GVFlags::NotEligibleToImport
Indicate if the global value cannot be imported (e.g.
it cannot be renamed or references something that can't be renamed).
Definition at line 521 of file ModuleSummaryIndex.h.
Referenced by GVFlags().
◆ Visibility
unsigned llvm::GlobalValueSummary::GVFlags::Visibility
The documentation for this struct was generated from the following file:
- include/llvm/IR/ModuleSummaryIndex.h