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The case will randomly fail if we test it with command " while llvm-lit test/tools/gold/X86/cache.ll ; do true; done". It is because the llvmcache-foo file is younger than llvmcache-349F039B8EB076D412007D82778442BED3148C4E and llvmcache-A8107945C65C2B2BBEE8E61AA604C311D60D58D6. But due to timestamp precision reason their timestamp is the same. Given the same timestamp, the file prune policy is to remove bigger size file first, so mostly foo file is removed for its bigger size. And the files size is under threshold after deleting foo file. That's what test case expect. However sometimes, the precision is enough to measure that timestamp of llvmcache-349F039B8EB076D412007D82778442BED3148C4E and llvmcache-A8107945C65C2B2BBEE8E61AA604C311D60D58D6 are smaller than foo, so llvmcache-349F039B8EB076D412007D82778442BED3148C4E and llvmcache-A8107945C65C2B2BBEE8E61AA604C311D60D58D6 are deleted first. Since the files size is still above the file size threshold after deleting the 2 files, the foo file is also deleted. And then the test case fails, because it expect only one file should be deleted instead of 3. The fix is to change the timestamp of llvmcache-foo file to meet the thinLTO prune policy. Patch by Luo Yuanke. Differential Revision: https://reviews.llvm.org/D52452 llvm-svn: 344158
81 lines
2.7 KiB
LLVM
81 lines
2.7 KiB
LLVM
; Verify that enabling caching is ignoring module when we emit them without hash.
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; RUN: opt -module-summary %s -o %t.o
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; RUN: opt -module-summary %p/Inputs/cache.ll -o %t2.o
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; RUN: rm -Rf %t.cache
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; RUN: %gold -m elf_x86_64 -plugin %llvmshlibdir/LLVMgold%shlibext \
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; RUN: --plugin-opt=thinlto \
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; RUN: --plugin-opt=cache-dir=%t.cache \
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; RUN: -o %t3.o %t2.o %t.o
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; We should just get the timestamp file
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; RUN: ls %t.cache | count 1
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; Verify that enabling caching is working with module with hash.
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; RUN: opt -module-hash -module-summary %s -o %t.o
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; RUN: opt -module-hash -module-summary %p/Inputs/cache.ll -o %t2.o
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; RUN: rm -Rf %t.cache
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; RUN: %gold -m elf_x86_64 -plugin %llvmshlibdir/LLVMgold%shlibext \
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; RUN: --plugin-opt=thinlto \
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; RUN: --plugin-opt=cache-dir=%t.cache \
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; RUN: -o %t3.o %t2.o %t.o
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; Two cached objects, plus a timestamp file
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; RUN: ls %t.cache | count 3
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; Create two files that would be removed by cache pruning due to age.
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; We should only remove files matching the pattern "llvmcache-*".
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; RUN: touch -t 197001011200 %t.cache/llvmcache-foo %t.cache/foo
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; RUN: %gold -m elf_x86_64 -plugin %llvmshlibdir/LLVMgold%shlibext \
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; RUN: --plugin-opt=thinlto \
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; RUN: --plugin-opt=cache-dir=%t.cache \
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; RUN: --plugin-opt=cache-policy=prune_after=1h:prune_interval=0s \
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; RUN: -o %t3.o %t2.o %t.o
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; Two cached objects, plus a timestamp file and "foo", minus the file we removed.
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; RUN: ls %t.cache | count 4
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; Create a file of size 64KB.
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; RUN: %python -c "print(' ' * 65536)" > %t.cache/llvmcache-foo
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; This should leave the file in place.
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; RUN: %gold -m elf_x86_64 -plugin %llvmshlibdir/LLVMgold%shlibext \
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; RUN: --plugin-opt=thinlto \
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; RUN: --plugin-opt=cache-dir=%t.cache \
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; RUN: --plugin-opt=cache-policy=cache_size_bytes=128k:prune_interval=0s \
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; RUN: -o %t3.o %t2.o %t.o
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; RUN: ls %t.cache | count 5
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; Increase the age of llvmcache-foo
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; RUN: touch -r %t.cache/llvmcache-foo -d '-2 minutes' %t.cache/llvmcache-foo
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; This should remove it.
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; RUN: %gold -m elf_x86_64 -plugin %llvmshlibdir/LLVMgold%shlibext \
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; RUN: --plugin-opt=thinlto \
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; RUN: --plugin-opt=save-temps \
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; RUN: --plugin-opt=cache-dir=%t.cache \
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; RUN: --plugin-opt=cache-policy=cache_size_bytes=32k:prune_interval=0s \
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; RUN: -o %t4.o %t2.o %t.o
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; RUN: ls %t.cache | count 4
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; With save-temps we can confirm that the cached files were copied into temp
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; files to avoid a race condition with the cached files being pruned, since the
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; gold plugin-api only accepts native objects passed back as files.
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; RUN: ls %t4.o.o1
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; RUN: ls %t4.o.o2
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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define void @globalfunc() #0 {
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entry:
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ret void
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}
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