102 lines
3.1 KiB
LLVM
102 lines
3.1 KiB
LLVM
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;; Keep __profd_foo in a nodeduplicate comdat, despite a comdat of the same name
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;; in a previous object file.
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;; Regular LTO
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; RUN: rm -rf %t && split-file %s %t
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; RUN: llvm-as %t/a.ll -o %t/a.bc
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; RUN: llvm-as %t/b.ll -o %t/b.bc
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; RUN: llvm-as %t/c.ll -o %t/c.bc
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; RUN: %gold -m elf_x86_64 -plugin %llvmshlibdir/LLVMgold%shlibext --plugin-opt=save-temps \
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; RUN: -u foo %t/a.bc --start-lib %t/b.bc --end-lib -o %t/ab
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; RUN: FileCheck %s --check-prefix=RESOL_AB < %t/ab.resolution.txt
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; RUN: llvm-readelf -x .data %t/ab | FileCheck %s --check-prefix=DATA
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; RESOL_AB: -r={{.*}}b.bc,__profc_foo,pl{{$}}
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;; .data contains a.bc:data. b.bc:data and c.bc:data are discarded.
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; DATA: 0x[[#%x,]] 01000000 00000000 ........
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;; __profc_foo from c.bc is non-prevailing and thus discarded.
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; RUN: %gold -m elf_x86_64 -plugin %llvmshlibdir/LLVMgold%shlibext --plugin-opt=save-temps \
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; RUN: -u foo -u c %t/a.bc --start-lib %t/b.bc %t/c.bc --end-lib -o %t/abc
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; RUN: FileCheck %s --check-prefix=RESOL_ABC < %t/abc.resolution.txt
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; RUN: llvm-readelf -x .data %t/abc | FileCheck %s --check-prefix=DATA
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; RESOL_ABC: -r={{.*}}b.bc,__profc_foo,pl{{$}}
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; RESOL_ABC: -r={{.*}}c.bc,__profc_foo,l{{$}}
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;; ThinLTO
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; RUN: rm -rf %t && split-file %s %t
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; RUN: opt --module-summary %t/a.ll -o %t/a.bc
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; RUN: opt --module-summary %t/b.ll -o %t/b.bc
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; RUN: opt --module-summary %t/c.ll -o %t/c.bc
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;; gold from binutils>=2.27 discards b.bc:__profc_foo even in the absence of --gc-sections.
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; RUN: %gold -m elf_x86_64 -plugin %llvmshlibdir/LLVMgold%shlibext \
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; RUN: -u foo %t/a.bc --start-lib %t/b.bc %t/c.bc --end-lib -o %t/abc --gc-sections
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; RUN: llvm-readelf -x .data %t/abc | FileCheck %s --check-prefix=DATA
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;--- a.ll
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target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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$__profc_foo = comdat nodeduplicate
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@__profc_foo = private global i64 1, comdat, align 8
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@__profd_foo = private global ptr @__profc_foo, comdat($__profc_foo), align 8
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declare void @b()
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define i64 @foo() {
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%v = load i64, ptr @__profc_foo
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%inc = add i64 1, %v
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store i64 %inc, ptr @__profc_foo
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ret i64 %inc
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}
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define void @_start() {
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call void @b()
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ret void
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}
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;--- b.ll
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target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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$__profc_foo = comdat nodeduplicate
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@__profc_foo = weak hidden global i64 2, comdat, align 8
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@__profd_foo = private global ptr @__profc_foo, comdat($__profc_foo)
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define weak i64 @foo() {
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%v = load i64, ptr @__profc_foo
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%inc = add i64 1, %v
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store i64 %inc, ptr @__profc_foo
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ret i64 %inc
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}
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define void @b() {
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ret void
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}
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;--- c.ll
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target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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$__profc_foo = comdat nodeduplicate
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@__profc_foo = weak hidden global i64 3, comdat, align 8
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@__profd_foo = private global ptr @__profc_foo, comdat($__profc_foo)
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define weak i64 @foo() {
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%v = load i64, ptr @__profc_foo
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%inc = add i64 1, %v
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store i64 %inc, ptr @__profc_foo
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ret i64 %inc
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}
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define void @c() {
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ret void
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}
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