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llvm-mirror/test/ThinLTO/X86/cache.ll
James Henderson 71bb756ca9 [ThinLTO]Allow setting of maximum cache size with 64-bit number 
Also added a C-interface function for large values, and updated
llvm-lto's --thinlto-cache-max-size-bytes switch to take a type larger
than int.

The maximum cache size in terms of bytes is a 64-bit number. However,
the methods to set it only took unsigned previously, which meant that
the maximum cache size could not be specified above 4GB. That's quite
small compared to the output of some projects, so it makes sense to
provide the ability to set larger values in that field.

We also needed a C-interface function that provides a greater range
than the existing thinlto_codegen_set_cache_size_bytes, which also only
takes an unsigned, so this change also adds
hinlto_codegen_set_cache_size_megabytes.

Reviewed by: mehdi_amini, tejohnson, steven_wu

Differential Revision: https://reviews.llvm.org/D52023

llvm-svn: 342233
2018-09-14 12:51:19 +00:00

164 lines
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; Verify first that *without* hash, we don't use the cache.
; RUN: opt -module-summary %s -o %t.bc
; RUN: opt -module-summary %p/Inputs/cache.ll -o %t2.bc
; Verify that enabling caching is ignoring module without hash
; RUN: rm -Rf %t.cache && mkdir %t.cache
; RUN: llvm-lto -thinlto-action=run -exported-symbol=globalfunc %t2.bc %t.bc -thinlto-cache-dir %t.cache
; RUN: ls %t.cache/llvmcache.timestamp
; RUN: ls %t.cache | count 1
; Verify that enabling caching is ignoring module without hash with llvm-lto2
; RUN: rm -Rf %t.cache
; RUN: llvm-lto2 run -o %t.o %t2.bc %t.bc -cache-dir %t.cache \
; RUN: -r=%t2.bc,_main,plx \
; RUN: -r=%t2.bc,_globalfunc,lx \
; RUN: -r=%t.bc,_globalfunc,plx
; RUN: ls %t.cache | count 0
; Repeat again, *with* hash this time.
; RUN: opt -module-hash -module-summary %s -o %t.bc
; RUN: opt -module-hash -module-summary %p/Inputs/cache.ll -o %t2.bc
; Verify that enabling caching is working, and that the pruner only removes
; files matching the pattern "llvmcache-*".
; RUN: rm -Rf %t.cache && mkdir %t.cache
; RUN: touch -t 197001011200 %t.cache/llvmcache-foo %t.cache/foo
; RUN: llvm-lto -thinlto-action=run -exported-symbol=globalfunc %t2.bc %t.bc -thinlto-cache-dir %t.cache
; RUN: ls %t.cache | count 4
; RUN: ls %t.cache/llvmcache.timestamp
; RUN: ls %t.cache/foo
; RUN: not ls %t.cache/llvmcache-foo
; RUN: ls %t.cache/llvmcache-* | count 2
; Verify that enabling caching is working with llvm-lto2
; RUN: rm -Rf %t.cache
; RUN: llvm-lto2 run -o %t.o %t2.bc %t.bc -cache-dir %t.cache \
; RUN: -r=%t2.bc,_main,plx \
; RUN: -r=%t2.bc,_globalfunc,lx \
; RUN: -r=%t.bc,_globalfunc,plx
; RUN: ls %t.cache | count 2
; RUN: ls %t.cache/llvmcache-* | count 2
; Verify that caches with a timestamp older than the pruning interval
; will be pruned
; RUN: rm -Rf %t.cache && mkdir %t.cache
; RUN: touch -t 197001011200 %t.cache/llvmcache-foo
; RUN: touch -t 197001011200 %t.cache/llvmcache.timestamp
; RUN: llvm-lto -thinlto-action=run -exported-symbol=globalfunc %t2.bc %t.bc -thinlto-cache-dir %t.cache
; RUN: not ls %t.cache/llvmcache-foo
; Verify that specifying a negative number for the pruning interval
; effectively disables the pruning
; RUN: rm -Rf %t.cache && mkdir %t.cache
; RUN: touch -t 197001011200 %t.cache/llvmcache-foo
; RUN: touch -t 197001011200 %t.cache/llvmcache.timestamp
; RUN: llvm-lto -thinlto-action=run -exported-symbol=globalfunc %t2.bc %t.bc -thinlto-cache-dir %t.cache --thinlto-cache-pruning-interval -1
; RUN: ls %t.cache/llvmcache-foo
; Verify that the pruner doesn't run and a cache file is not deleted when:
; default values for pruning interval and cache expiration are used,
; llvmcache.timestamp is current,
; cache file is older than default cache expiration value.
; RUN: rm -Rf %t.cache && mkdir %t.cache
; RUN: touch -t 197001011200 %t.cache/llvmcache-foo
; RUN: touch %t.cache/llvmcache.timestamp
; RUN: llvm-lto -thinlto-action=run -exported-symbol=globalfunc %t2.bc %t.bc -thinlto-cache-dir %t.cache
; RUN: ls %t.cache/llvmcache-foo
; Verify that the pruner runs and a cache file is deleted when:
; pruning interval has value 0 (i.e. run garbage collector now)
; default value for cache expiration is used,
; llvmcache.timestamp is current,
; cache file is older than default cache expiration value.
; RUN: rm -Rf %t.cache && mkdir %t.cache
; RUN: touch -t 197001011200 %t.cache/llvmcache-foo
; RUN: touch %t.cache/llvmcache.timestamp
; RUN: llvm-lto -thinlto-action=run -exported-symbol=globalfunc %t2.bc %t.bc -thinlto-cache-dir %t.cache --thinlto-cache-pruning-interval 0
; RUN: not ls %t.cache/llvmcache-foo
; Populate the cache with files with "old" access times, then check llvm-lto updates these file times
; A negative pruning interval is used to avoid removing cache entries
; RUN: rm -Rf %t.cache && mkdir %t.cache
; RUN: llvm-lto -thinlto-action=run -exported-symbol=globalfunc %t2.bc %t.bc -thinlto-cache-dir %t.cache
; RUN: touch -a -t 197001011200 %t.cache/llvmcache-*
; RUN: llvm-lto -thinlto-action=run -exported-symbol=globalfunc %t2.bc %t.bc -thinlto-cache-dir %t.cache --thinlto-cache-pruning-interval -1
; RUN: ls -ltu %t.cache/* | not grep 1970-01-01
; Populate the cache with files with "old" access times, then check llvm-lto2 updates these file times
; RUN: rm -Rf %t.cache
; RUN: llvm-lto2 run -o %t.o %t2.bc %t.bc -cache-dir %t.cache \
; RUN: -r=%t2.bc,_main,plx \
; RUN: -r=%t2.bc,_globalfunc,lx \
; RUN: -r=%t.bc,_globalfunc,plx
; RUN: touch -a -t 197001011200 %t.cache/llvmcache-*
; RUN: llvm-lto2 run -o %t.o %t2.bc %t.bc -cache-dir %t.cache \
; RUN: -r=%t2.bc,_main,plx \
; RUN: -r=%t2.bc,_globalfunc,lx \
; RUN: -r=%t.bc,_globalfunc,plx
; RUN: ls -ltu %t.cache/* | not grep 1970-01-01
; Verify that specifying max size for the cache directory prunes it to this
; size, removing the oldest files first.
; RUN: rm -Rf %t.cache && mkdir %t.cache
; Create cache files with different sizes.
; Only 8B and 76B files should stay after pruning.
; RUN: %python -c "with open(r'%t.cache/llvmcache-foo-100k', 'w') as file: file.truncate(102400)"
; RUN: touch -t 198002011200 %t.cache/llvmcache-foo-100k
; RUN: %python -c "with open(r'%t.cache/llvmcache-foo-16', 'w') as file: file.truncate(16)"
; RUN: touch -t 198002021200 %t.cache/llvmcache-foo-16
; RUN: %python -c "with open(r'%t.cache/llvmcache-foo-77k', 'w') as file: file.truncate(78848)"
; RUN: touch -t 198002031200 %t.cache/llvmcache-foo-77k
; RUN: %python -c "with open(r'%t.cache/llvmcache-foo-8', 'w') as file: file.truncate(8)"
; RUN: %python -c "with open(r'%t.cache/llvmcache-foo-76', 'w') as file: file.truncate(76)"
; RUN: llvm-lto -thinlto-action=run -exported-symbol=globalfunc %t2.bc %t.bc -thinlto-cache-dir %t.cache --thinlto-cache-max-size-bytes 78847
; RUN: ls %t.cache/llvmcache-foo-8
; RUN: ls %t.cache/llvmcache-foo-76
; RUN: not ls %t.cache/llvmcache-foo-16
; RUN: not ls %t.cache/llvmcache-foo-100k
; RUN: not ls %t.cache/llvmcache-foo-77k
; Verify that specifying a max size > 4GB for the cache directory does not
; prematurely prune, due to an integer overflow.
; RUN: rm -Rf %t.cache && mkdir %t.cache
; RUN: %python -c "with open(r'%t.cache/llvmcache-foo-10', 'w') as file: file.truncate(10)"
; RUN: llvm-lto -thinlto-action=run -exported-symbol=globalfunc %t2.bc %t.bc -thinlto-cache-dir %t.cache --thinlto-cache-max-size-bytes 4294967297
; RUN: ls %t.cache/llvmcache-foo-10
; Verify that negative numbers aren't accepted for the
; --thinlto-cache-max-size-bytes switch
; RUN: rm -Rf %t.cache && mkdir %t.cache
; RUN: not llvm-lto %t.bc --thinlto-cache-max-size-bytes -1 2>&1 | FileCheck %s
; CHECK: -thinlto-cache-max-size-bytes option: '-1' value invalid
; Verify that specifying max number of files in the cache directory prunes
; it to this amount, removing the oldest files first.
; RUN: rm -Rf %t.cache && mkdir %t.cache
; Create cache files with different sizes.
; Only 75B and 76B files should stay after pruning.
; RUN: %python -c "print(' ' * 1023)" > %t.cache/llvmcache-foo-1023
; RUN: touch -t 198002011200 %t.cache/llvmcache-foo-1023
; RUN: %python -c "print(' ' * 15)" > %t.cache/llvmcache-foo-15
; RUN: touch -t 198002021200 %t.cache/llvmcache-foo-15
; RUN: %python -c "print(' ' * 7)" > %t.cache/llvmcache-foo-7
; RUN: touch -t 198002031200 %t.cache/llvmcache-foo-7
; RUN: %python -c "print(' ' * 75)" > %t.cache/llvmcache-foo-75
; RUN: %python -c "print(' ' * 76)" > %t.cache/llvmcache-foo-76
; RUN: llvm-lto -thinlto-action=run -exported-symbol=globalfunc %t2.bc %t.bc -thinlto-cache-dir %t.cache --thinlto-cache-max-size-files 4
; RUN: ls %t.cache/llvmcache-foo-75
; RUN: ls %t.cache/llvmcache-foo-76
; RUN: not ls %t.cache/llvmcache-foo-15
; RUN: not ls %t.cache/llvmcache-foo-1024
; RUN: not ls %t.cache/llvmcache-foo-7
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-apple-macosx10.11.0"
define void @globalfunc() #0 {
entry:
ret void
}
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