6b92bb4790
This change defers creating Support/Caching.cpp's cache directory until it actually writes to the cache. This allows using Caching library in a read-only fashion. If read-only, the cache is guaranteed not to write to disk. This keeps tools using DebugInfod (currently llvm-symbolizer) hermetic when not configured to perform remote lookups. Reviewed By: phosek Differential Revision: https://reviews.llvm.org/D117589
36 lines
1.4 KiB
LLVM
36 lines
1.4 KiB
LLVM
; RUN: opt -module-hash -module-summary %s -o %t.bc
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; RUN: opt -module-hash -module-summary %p/Inputs/empty_module_with_cache.ll -o %t2.bc
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; Verify that enabling caching is working, even if the module is empty
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; RUN: rm -Rf %t.cache && mkdir %t.cache
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; RUN: llvm-lto -thinlto-action=run %t2.bc %t.bc -exported-symbol=main -thinlto-cache-dir %t.cache
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; RUN: ls %t.cache/llvmcache.timestamp
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; RUN: ls %t.cache | count 3
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; Verify that enabling caching is working with llvm-lto2
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; RUN: rm -Rf %t.cache
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; RUN: llvm-lto2 run -o %t.o %t2.bc %t.bc -cache-dir %t.cache \
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; RUN: -r=%t2.bc,_main,plx
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; RUN: ls %t.cache | count 2
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; Same, but without hash, the index will be empty and caching should not happen
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; RUN: opt -module-summary %s -o %t.bc
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; RUN: opt -module-summary %p/Inputs/empty_module_with_cache.ll -o %t2.bc
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; Verify that caching is disabled for module without hash
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; RUN: rm -Rf %t.cache && mkdir %t.cache
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; RUN: llvm-lto -thinlto-action=run %t2.bc %t.bc -exported-symbol=main -thinlto-cache-dir %t.cache
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; RUN: ls %t.cache/llvmcache.timestamp
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; RUN: ls %t.cache | count 1
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; Verify that caching is disabled for module without hash, with llvm-lto2
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; RUN: rm -Rf %t.cache
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; RUN: llvm-lto2 run -o %t.o %t2.bc %t.bc -cache-dir %t.cache \
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; RUN: -r=%t2.bc,_main,plx
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; RUN: not ls %t.cache
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target datalayout = "e-m:o-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-apple-macosx10.11.0"
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