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authorYuchen Wu <yuchenericwu@hotmail.com>2013-11-20 04:14:48 +0000
committerYuchen Wu <yuchenericwu@hotmail.com>2013-11-20 04:14:48 +0000
commitbae50baf96cfc9b03650d92c60f7c612c8be8b54 (patch)
tree0cd9b220a5badc2f0bb13a32983e59746793cf3f /lib/profile/GCDAProfiling.c
parent6a7d6c7fecf2cd9447edd7b88973f0ea79684453 (diff)
compiler-rt: Support for file checksum in GCDAProfiling.cpp.
Takes file checksum as an argument to write to .gcda file. git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@195190 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/profile/GCDAProfiling.c')
-rw-r--r--lib/profile/GCDAProfiling.c12
1 files changed, 7 insertions, 5 deletions
diff --git a/lib/profile/GCDAProfiling.c b/lib/profile/GCDAProfiling.c
index 7edf6829b..5e667162e 100644
--- a/lib/profile/GCDAProfiling.c
+++ b/lib/profile/GCDAProfiling.c
@@ -245,7 +245,8 @@ static void unmap_file() {
* profiling enabled will emit to a different file. Only one file may be
* started at a time.
*/
-void llvm_gcda_start_file(const char *orig_filename, const char version[4]) {
+void llvm_gcda_start_file(const char *orig_filename, const char version[4],
+ uint32_t checksum) {
const char *mode = "r+b";
filename = mangle_filename(orig_filename);
@@ -293,10 +294,10 @@ void llvm_gcda_start_file(const char *orig_filename, const char version[4]) {
}
}
- /* gcda file, version, stamp LLVM. */
+ /* gcda file, version, stamp checksum. */
write_bytes("adcg", 4);
write_bytes(version, 4);
- write_bytes("MVLL", 4);
+ write_32bit_value(checksum);
#ifdef DEBUG_GCDAPROFILING
fprintf(stderr, "llvmgcda: [%s]\n", orig_filename);
@@ -329,7 +330,8 @@ void llvm_gcda_increment_indirect_counter(uint32_t *predecessor,
}
void llvm_gcda_emit_function(uint32_t ident, const char *function_name,
- uint8_t use_extra_checksum) {
+ uint8_t use_extra_checksum,
+ uint32_t cfg_checksum) {
uint32_t len = 2;
if (use_extra_checksum)
@@ -348,7 +350,7 @@ void llvm_gcda_emit_function(uint32_t ident, const char *function_name,
write_32bit_value(ident);
write_32bit_value(0);
if (use_extra_checksum)
- write_32bit_value(0);
+ write_32bit_value(cfg_checksum);
if (function_name)
write_string(function_name);
}