| ; There are two main cases where comdats are necessary: |
| ; 1. standard inline functions (weak_odr / linkonce_odr) |
| ; 2. available externally functions (C99 inline / extern template / dllimport) |
| ; Check that we do the right thing for the two object formats with comdats, ELF |
| ; and COFF. |
| ; |
| ; Test comdat functions. Non-comdat functions are tested in linkage.ll. |
| ; RUN: split-file %s %t |
| ; RUN: cat %t/main.ll %t/disable.ll > %t0.ll |
| ; RUN: cat %t/main.ll %t/enable.ll > %t1.ll |
| ; RUN: opt < %t0.ll -mtriple=x86_64-linux -passes=instrprof -S | FileCheck %s --check-prefixes=ELF,ELF0 |
| ; RUN: opt < %t1.ll -mtriple=x86_64-linux -passes=instrprof -S | FileCheck %s --check-prefixes=ELF,ELF1 |
| ; RUN: opt < %t0.ll -mtriple=x86_64-windows -passes=instrprof -S | FileCheck %s --check-prefixes=COFF,COFF0 |
| ; RUN: opt < %t1.ll -mtriple=x86_64-windows -passes=instrprof -S | FileCheck %s --check-prefixes=COFF,COFF1 |
| |
| ;--- main.ll |
| declare void @llvm.instrprof.increment(ptr, i64, i32, i32) |
| |
| $foo_inline = comdat any |
| $foo_extern = comdat any |
| $foo_private_profn = comdat any |
| |
| @__profn_foo_inline = linkonce_odr hidden constant [10 x i8] c"foo_inline" |
| @__profn_foo_extern = linkonce_odr hidden constant [10 x i8] c"foo_extern" |
| @__profn_foo_private_profn = private constant [17 x i8] c"foo_private_profn" |
| |
| ;; When value profiling is disabled, __profd_ variables are not referenced by |
| ;; code. We can use private linkage. When enabled, __profd_ needs to be |
| ;; non-local which requires separate comdat on COFF due to a link.exe limitation. |
| |
| ; ELF: @__profc_foo_inline = linkonce_odr hidden global {{.*}}, section "__llvm_prf_cnts", comdat, align 8 |
| ; ELF0: @__profd_foo_inline = private global {{.*}}, section "__llvm_prf_data", comdat($__profc_foo_inline), align 8 |
| ; ELF1: @__profd_foo_inline = linkonce_odr hidden global {{.*}}, section "__llvm_prf_data", comdat($__profc_foo_inline), align 8 |
| ; COFF0: @__profc_foo_inline = linkonce_odr hidden global {{.*}}, section ".lprfc$M", comdat, align 8 |
| ; COFF0: @__profd_foo_inline = internal global {{.*}}, section ".lprfd$M", comdat($__profc_foo_inline), align 8 |
| ; COFF1: @__profc_foo_inline = linkonce_odr hidden global {{.*}}, section ".lprfc$M", comdat, align 8 |
| ; COFF1: @__profd_foo_inline = linkonce_odr hidden global {{.*}}, section ".lprfd$M", comdat, align 8 |
| define weak_odr void @foo_inline() comdat { |
| call void @llvm.instrprof.increment(ptr @__profn_foo_inline, i64 0, i32 1, i32 0) |
| ret void |
| } |
| |
| ; ELF: @__profc_foo_extern = linkonce_odr hidden global{{.*}}, section "__llvm_prf_cnts", comdat, align 8 |
| ; ELF0: @__profd_foo_extern = private global{{.*}}, section "__llvm_prf_data", comdat($__profc_foo_extern), align 8 |
| ; ELF1: @__profd_foo_extern = linkonce_odr hidden global{{.*}}, section "__llvm_prf_data", comdat($__profc_foo_extern), align 8 |
| ; COFF: @__profc_foo_extern = linkonce_odr hidden global{{.*}}, section ".lprfc$M", comdat, align 8 |
| ; COFF0: @__profd_foo_extern = internal global{{.*}}, section ".lprfd$M", comdat($__profc_foo_extern), align 8 |
| ; COFF1: @__profd_foo_extern = linkonce_odr hidden global{{.*}}, section ".lprfd$M", comdat, align 8 |
| define available_externally void @foo_extern() { |
| call void @llvm.instrprof.increment(ptr @__profn_foo_extern, i64 0, i32 1, i32 0) |
| ret void |
| } |
| |
| ; ELF: @__profc_foo_private_profn = private global{{.*}}, section "__llvm_prf_cnts", comdat, align 8 |
| ; ELF0: @__profd_foo_private_profn = private global{{.*}}, section "__llvm_prf_data", comdat($__profc_foo_private_profn), align 8 |
| ; ELF1: @__profd_foo_private_profn = private global{{.*}}, section "__llvm_prf_data", comdat($__profc_foo_private_profn), align 8 |
| ; COFF: @__profc_foo_private_profn = internal global{{.*}}, section ".lprfc$M", comdat, align 8 |
| ; COFF0: @__profd_foo_private_profn = internal global{{.*}}, section ".lprfd$M", comdat($__profc_foo_private_profn), align 8 |
| ; COFF1: @__profd_foo_private_profn = internal global{{.*}}, section ".lprfd$M", comdat, align 8 |
| define void @foo_private_profn() comdat { |
| call void @llvm.instrprof.increment(ptr @__profn_foo_private_profn, i64 0, i32 1, i32 0) |
| ret void |
| } |
| |
| ; ELF: @llvm.compiler.used = appending global [3 x ptr] [ptr @__profd_foo_inline, ptr @__profd_foo_extern, ptr @__profd_foo_private_profn] |
| ; COFF0: @llvm.compiler.used = appending global [4 x ptr] [ptr @__llvm_profile_runtime_user, ptr @__profd_foo_inline, ptr @__profd_foo_extern, ptr @__profd_foo_private_profn] |
| ; COFF1: @llvm.used = appending global [5 x ptr] [ptr @__llvm_profile_runtime_user, ptr @__profd_foo_inline, ptr @__profd_foo_extern, ptr @__profd_foo_private_profn, ptr @__llvm_prf_nm] |
| |
| ;--- disable.ll |
| !llvm.module.flags = !{!0} |
| !0 = !{i32 2, !"EnableValueProfiling", i32 0} |
| |
| ;--- enable.ll |
| !llvm.module.flags = !{!0} |
| !0 = !{i32 2, !"EnableValueProfiling", i32 1} |