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