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compiler-rt: Support for file checksum in GCDAProfiling.cpp. 

Takes file checksum as an argument to write to .gcda file.

llvm-svn: 195190
This commit is contained in:
Yuchen Wu 2013-11-20 04:14:48 +00:00
parent ed1ffe0197
commit ea7611c53c
1 changed files with 7 additions and 5 deletions
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12
compiler-rt/lib/profile/GCDAProfiling.c
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@ -245,7 +245,8 @@ static void unmap_file() {
* profiling enabled will emit to a different file. Only one file may be * profiling enabled will emit to a different file. Only one file may be
* started at a time. * 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"; const char *mode = "r+b";
filename = mangle_filename(orig_filename); 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("adcg", 4);
write_bytes(version, 4); write_bytes(version, 4);
write_bytes("MVLL", 4); write_32bit_value(checksum);
#ifdef DEBUG_GCDAPROFILING #ifdef DEBUG_GCDAPROFILING
fprintf(stderr, "llvmgcda: [%s]\n", orig_filename); 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, 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; uint32_t len = 2;
if (use_extra_checksum) 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(ident);
write_32bit_value(0); write_32bit_value(0);
if (use_extra_checksum) if (use_extra_checksum)
write_32bit_value(0); write_32bit_value(cfg_checksum);
if (function_name) if (function_name)
write_string(function_name); write_string(function_name);
} }