;; Test comdat functions. ; RUN: opt < %s -mtriple=x86_64-linux -passes=pgo-instr-gen,instrprof -S | FileCheck %s --check-prefixes=ELF ; RUN: opt < %s -mtriple=x86_64-windows -passes=pgo-instr-gen,instrprof -S | FileCheck %s --check-prefixes=COFF $linkonceodr = comdat any $weakodr = comdat any $weak = comdat any $linkonce = comdat any ;; profc/profd have hash suffixes. This definition doesn't have value profiling, ;; so definitions with the same name in other modules must have the same CFG and ;; cannot have value profiling, either. profd can be made private for ELF. ; ELF: @__profc_linkonceodr.[[#]] = linkonce_odr hidden global {{.*}} comdat, align 8 ; ELF: @__profd_linkonceodr.[[#]] = private global {{.*}} comdat($__profc_linkonceodr.[[#]]), align 8 ; COFF: @__profc_linkonceodr.[[#]] = linkonce_odr hidden global {{.*}} comdat, align 8 ; COFF: @__profd_linkonceodr.[[#]] = linkonce_odr hidden global {{.*}} comdat, align 8 define linkonce_odr void @linkonceodr() comdat { ret void } ;; weakodr in a comdat is not renamed. There is no guarantee that definitions in ;; other modules don't have value profiling. profd should be conservatively ;; non-private to prevent a caller from referencing a non-prevailing profd, ;; causing a linker error. ; ELF: @__profc_weakodr = weak_odr hidden global {{.*}} comdat, align 8 ; ELF: @__profd_weakodr = weak_odr hidden global {{.*}} comdat($__profc_weakodr), align 8 ; COFF: @__profc_weakodr = weak_odr hidden global {{.*}} comdat, align 8 ; COFF: @__profd_weakodr = weak_odr hidden global {{.*}} comdat, align 8 define weak_odr void @weakodr() comdat { ret void } ;; weak in a comdat is not renamed. There is no guarantee that definitions in ;; other modules don't have value profiling. profd should be conservatively ;; non-private to prevent a caller from referencing a non-prevailing profd, ;; causing a linker error. ; ELF: @__profc_weak = weak hidden global {{.*}} comdat, align 8 ; ELF: @__profd_weak = weak hidden global {{.*}} comdat($__profc_weak), align 8 ; COFF: @__profc_weak = weak hidden global {{.*}} comdat, align 8 ; COFF: @__profd_weak = weak hidden global {{.*}} comdat, align 8 define weak void @weak() comdat { ret void } ;; profc/profd have hash suffixes. This definition doesn't have value profiling, ;; so definitions with the same name in other modules must have the same CFG and ;; cannot have value profiling, either. profd can be made private for ELF. ; ELF: @__profc_linkonce.[[#]] = linkonce hidden global {{.*}} comdat, align 8 ; ELF: @__profd_linkonce.[[#]] = private global {{.*}} comdat($__profc_linkonce.[[#]]), align 8 ; COFF: @__profc_linkonce.[[#]] = linkonce hidden global {{.*}} comdat, align 8 ; COFF: @__profd_linkonce.[[#]] = linkonce hidden global {{.*}} comdat, align 8 define linkonce void @linkonce() comdat { ret void } ; Check that comdat aliases are hidden for all linkage types ; ELF: @linkonceodr.local = linkonce_odr hidden alias void (), ptr @linkonceodr ; ELF: @weakodr.local = weak_odr hidden alias void (), ptr @weakodr ; ELF: @weak.local = weak hidden alias void (), ptr @weak ; ELF: @linkonce.local = linkonce hidden alias void (), ptr @linkonce