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Allow preprocessed hits even when using PCH

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This commit is contained in:
Joel Rosdahl 2010-09-05 15:17:40 +02:00
parent 16c2076733
commit 1d5e983325
2 changed files with 27 additions and 25 deletions
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19
ccache.c
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@ -877,7 +877,8 @@ calculate_object_hash(struct args *args, struct mdfour *hash, int direct_mode)
to the hash. The theory is that these arguments will change
the output of -E if they are going to have any effect at
all. For precompiled headers this might not be the case. */
if (!direct_mode && !output_is_precompiled_header) {
if (!direct_mode && !output_is_precompiled_header
&& !using_precompiled_header) {
if (compopt_affects_cpp(args->argv[i])) {
i++;
continue;
@ -1830,10 +1831,6 @@ ccache(int argc, char *argv[])
/* Add object to manifest later. */
put_object_in_manifest = true;
}
} else if (using_precompiled_header) {
cc_log("Direct mode must be enabled when using a precompiled header");
stats_update(STATS_CANTUSEPCH);
failed();
}
/*
@ -1873,16 +1870,8 @@ ccache(int argc, char *argv[])
put_object_in_manifest = true;
}
if (using_precompiled_header) {
/*
* We must avoid a preprocessed hit when using a PCH. Otherwise, we would
* get a false hit if the PCH has changed (but the rest of the source has
* not) since the preprocessed output doesn't include the PCH content.
*/
} else {
/* if we can return from cache at this point then do */
from_cache(FROMCACHE_CPP_MODE, put_object_in_manifest);
}
/* if we can return from cache at this point then do */
from_cache(FROMCACHE_CPP_MODE, put_object_in_manifest);
if (getenv("CCACHE_READONLY")) {
cc_log("Read-only mode; running real compiler");

33
test.sh
View File

@ -1669,14 +1669,6 @@ EOF
rm -f pch.h
backdate pch.h.gch
testname="preprocessor mode"
$CCACHE -Cz >/dev/null
CCACHE_NODIRECT=1 CCACHE_SLOPPINESS=time_macros $CCACHE $COMPILER -c -fpch-preprocess pch.c
checkstat 'cache hit (direct)' 0
checkstat 'cache hit (preprocessed)' 0
checkstat 'cache miss' 0
checkstat "can't use precompiled header" 1
testname="no -fpch-preprocess, #include"
$CCACHE -Cz >/dev/null
$CCACHE $COMPILER -c pch.c 2>/dev/null
@ -1731,10 +1723,31 @@ EOF
backdate pch.h.gch
CCACHE_SLOPPINESS=time_macros $CCACHE $COMPILER -c -fpch-preprocess pch.c
checkstat 'cache hit (direct)' 1
# Shouldnt' get a preprocessed hit since the preprocessed output doesn't
# include the PCH header:
checkstat 'cache hit (preprocessed)' 0
checkstat 'cache miss' 2
testname="preprocessor mode"
$CCACHE -Cz >/dev/null
CCACHE_NODIRECT=1 CCACHE_SLOPPINESS=time_macros $CCACHE $COMPILER -c -fpch-preprocess pch.c
checkstat 'cache hit (direct)' 0
checkstat 'cache hit (preprocessed)' 0
checkstat 'cache miss' 1
CCACHE_NODIRECT=1 CCACHE_SLOPPINESS=time_macros $CCACHE $COMPILER -c -fpch-preprocess pch.c
checkstat 'cache hit (direct)' 0
checkstat 'cache hit (preprocessed)' 1
checkstat 'cache miss' 1
testname="preprocessor mode, file changed"
echo "updated" >>pch.h.gch # GCC seems to cope with this...
backdate pch.h.gch
CCACHE_NODIRECT=1 CCACHE_SLOPPINESS=time_macros $CCACHE $COMPILER -c -fpch-preprocess pch.c
checkstat 'cache hit (direct)' 0
checkstat 'cache hit (preprocessed)' 1
checkstat 'cache miss' 2
CCACHE_NODIRECT=1 CCACHE_SLOPPINESS=time_macros $CCACHE $COMPILER -c -fpch-preprocess pch.c
checkstat 'cache hit (direct)' 0
checkstat 'cache hit (preprocessed)' 2
checkstat 'cache miss' 2
}
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