90af55d8a9
This is fixing a thinLTO module collision issue for thin archives. The problem is that we always use a zero offset to name members in a thin archive and that causes the following build error:
ld.lld: error: Expected at most one ThinLTO module per bitcode file
which happens to a thin archive that has two members with the same object file name (whose paths will be ignored by thinLTO driver)
The fix here is to use real member offset instead as is done for non-thin archives.
Differential Revision: https://reviews.llvm.org/D79880
80 lines
3.0 KiB
LLVM
80 lines
3.0 KiB
LLVM
; REQUIRES: x86
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; Basic ThinLTO tests.
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; RUN: opt -module-summary %s -o %t1.o
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; RUN: opt -module-summary %p/Inputs/thinlto.ll -o %t2.o
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; First force single-threaded mode
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; RUN: rm -f %t31.lto.o %t32.lto.o
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; RUN: ld.lld -save-temps --thinlto-jobs=1 -shared %t1.o %t2.o -o %t3
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; RUN: llvm-nm %t31.lto.o | FileCheck %s --check-prefix=NM1
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; RUN: llvm-nm %t32.lto.o | FileCheck %s --check-prefix=NM2
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; Next force multi-threaded mode
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; RUN: rm -f %t31.lto.o %t32.lto.o
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; RUN: ld.lld -save-temps --thinlto-jobs=2 -shared %t1.o %t2.o -o %t3
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; RUN: llvm-nm %t31.lto.o | FileCheck %s --check-prefix=NM1
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; RUN: llvm-nm %t32.lto.o | FileCheck %s --check-prefix=NM2
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;; --plugin-opt=jobs= is an alias.
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; RUN: rm -f %t31.lto.o %t32.lto.o
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; RUN: ld.lld -save-temps --plugin-opt=jobs=2 -shared %t1.o %t2.o -o %t3
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; RUN: llvm-nm %t31.lto.o | FileCheck %s --check-prefix=NM1
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; RUN: llvm-nm %t32.lto.o | FileCheck %s --check-prefix=NM2
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;; --thinlto-jobs= defaults to --threads=.
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; RUN: rm -f %t31.lto.o %t32.lto.o
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; RUN: ld.lld -save-temps --threads=2 -shared %t1.o %t2.o -o %t3
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; RUN: llvm-nm %t31.lto.o | FileCheck %s --check-prefix=NM1
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; RUN: llvm-nm %t32.lto.o | FileCheck %s --check-prefix=NM2
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;; --thinlto-jobs= overrides --threads=.
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; RUN: rm -f %t31.lto.o %t32.lto.o
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; RUN: ld.lld -save-temps --threads=1 --plugin-opt=jobs=2 -shared %t1.o %t2.o -o %t3
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; RUN: llvm-nm %t31.lto.o | FileCheck %s --check-prefix=NM1
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; RUN: llvm-nm %t32.lto.o | FileCheck %s --check-prefix=NM2
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; Test with all threads, on all cores, on all CPU sockets
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; RUN: rm -f %t31.lto.o %t32.lto.o
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; RUN: ld.lld -save-temps --thinlto-jobs=all -shared %t1.o %t2.o -o %t3
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; RUN: llvm-nm %t31.lto.o | FileCheck %s --check-prefix=NM1
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; RUN: llvm-nm %t32.lto.o | FileCheck %s --check-prefix=NM2
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; Test with many more threads than the system has
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; RUN: rm -f %t31.lto.o %t32.lto.o
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; RUN: ld.lld -save-temps --thinlto-jobs=100 -shared %t1.o %t2.o -o %t3
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; RUN: llvm-nm %t31.lto.o | FileCheck %s --check-prefix=NM1
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; RUN: llvm-nm %t32.lto.o | FileCheck %s --check-prefix=NM2
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; Test with a bad value
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; RUN: rm -f %t31.lto.o %t32.lto.o
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; RUN: not ld.lld -save-temps --thinlto-jobs=foo -shared %t1.o %t2.o -o %t3 2>&1 | FileCheck %s --check-prefix=BAD-JOBS
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; BAD-JOBS: error: --thinlto-jobs: invalid job count: foo
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; Then check without --thinlto-jobs (which currently defaults to heavyweight_hardware_concurrency, meanning one thread per hardware core -- not SMT)
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; RUN: ld.lld -shared -save-temps %t1.o %t2.o -o %t3
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; RUN: llvm-nm %t31.lto.o | FileCheck %s --check-prefix=NM1
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; RUN: llvm-nm %t32.lto.o | FileCheck %s --check-prefix=NM2
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; Check that -save-temps is usable with thin archives
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; RUN: rm -fr %t.dir
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; RUN: mkdir -p %t.dir
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; RUN: cp %t2.o %t.dir/t.o
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; RUN: llvm-ar rcsT %t.dir/t.a %t.dir/t.o
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; RUN: ld.lld -save-temps %t1.o %t.dir/t.a -o %t.null
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; RUN: ls %t.dir/t.a*.0.preopt.bc
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; NM1: T f
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; NM2: T g
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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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declare void @g(...)
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define void @f() {
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entry:
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call void (...) @g()
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ret void
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}
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