Fix some sign compare warnings.

This change changes kmp_bstate.old_tid to sign integer instead of unsigned integer.
It also defines two new macros KMP_NSEC_PER_SEC and KMP_USEC_PER_SEC which lets us take
control of the sign (we want them to be longs).  Also, in kmp_wait_release.h, the byteref()
function's return type is changed from char to unsigned char.

llvm-svn: 239057

4 files changed, 10 insertions, 15 deletions

diff --git a/openmp/runtime/src/kmp.h b/openmp/runtime/src/kmp.h
index d9aee8c4955..d003146af00 100644
--- a/openmp/runtime/src/kmp.h
+++ b/openmp/runtime/src/kmp.h
@@ -157,13 +157,8 @@ class kmp_stats_list;
 // #define USE_QUEUING_LOCK_FOR_BGET
 // #endif
 
-#ifndef NSEC_PER_SEC
-# define NSEC_PER_SEC 1000000000L
-#endif
-
-#ifndef USEC_PER_SEC
-# define USEC_PER_SEC 1000000L
-#endif
+#define KMP_NSEC_PER_SEC 1000000000L
+#define KMP_USEC_PER_SEC 1000000L
 
 /*!
 @ingroup BASIC_TYPES
@@ -1657,7 +1652,7 @@ typedef struct KMP_ALIGN_CACHE kmp_bstate {
     kmp_uint32 *skip_per_level;
     kmp_uint32 my_level;
     kmp_int32 parent_tid;
-    kmp_uint32 old_tid;
+    kmp_int32 old_tid;
     kmp_uint32 depth;
     struct kmp_bstate *parent_bar;
     kmp_team_t *team;
diff --git a/openmp/runtime/src/kmp_wait_release.h b/openmp/runtime/src/kmp_wait_release.h
index 31d76a1df87..dde1763a73a 100644
--- a/openmp/runtime/src/kmp_wait_release.h
+++ b/openmp/runtime/src/kmp_wait_release.h
@@ -459,7 +459,7 @@ class kmp_flag_oncore : public kmp_flag<kmp_uint64> {
 #if USE_ITT_BUILD
     void *itt_sync_obj;     /**< ITT object that must be passed to new flag location. */
 #endif
-    char& byteref(volatile kmp_uint64* loc, size_t offset) { return ((char *)loc)[offset]; }
+    unsigned char& byteref(volatile kmp_uint64* loc, size_t offset) { return ((unsigned char *)loc)[offset]; }
 public:
     kmp_flag_oncore(volatile kmp_uint64 *p)
         : kmp_flag<kmp_uint64>(p, flag_oncore), num_waiting_threads(0), flag_switch(false) {}
diff --git a/openmp/runtime/src/z_Linux_util.c b/openmp/runtime/src/z_Linux_util.c
index 55f9bdfc610..c624c9d9f09 100644
--- a/openmp/runtime/src/z_Linux_util.c
+++ b/openmp/runtime/src/z_Linux_util.c
@@ -843,7 +843,7 @@ __kmp_launch_monitor( void *thr )
         interval.tv_nsec = 0;
     } else {
         interval.tv_sec  = 0;
-        interval.tv_nsec = (NSEC_PER_SEC / __kmp_monitor_wakeups);
+        interval.tv_nsec = (KMP_NSEC_PER_SEC / __kmp_monitor_wakeups);
     }
 
     KA_TRACE( 10, ("__kmp_launch_monitor: #2 monitor\n" ) );
@@ -870,9 +870,9 @@ __kmp_launch_monitor( void *thr )
         now.tv_sec  += interval.tv_sec;
         now.tv_nsec += interval.tv_nsec;
 
-        if (now.tv_nsec >= NSEC_PER_SEC) {
+        if (now.tv_nsec >= KMP_NSEC_PER_SEC) {
             now.tv_sec  += 1;
-            now.tv_nsec -= NSEC_PER_SEC;
+            now.tv_nsec -= KMP_NSEC_PER_SEC;
         }
 
         status = pthread_mutex_lock( & __kmp_wait_mx.m_mutex );
@@ -2248,14 +2248,14 @@ __kmp_elapsed( double *t )
 
     status = clock_gettime( CLOCK_PROCESS_CPUTIME_ID, &ts );
     KMP_CHECK_SYSFAIL_ERRNO( "clock_gettime", status );
-    *t = (double) ts.tv_nsec * (1.0 / (double) NSEC_PER_SEC) +
+    *t = (double) ts.tv_nsec * (1.0 / (double) KMP_NSEC_PER_SEC) +
         (double) ts.tv_sec;
 # else
     struct timeval tv;
 
     status = gettimeofday( & tv, NULL );
     KMP_CHECK_SYSFAIL_ERRNO( "gettimeofday", status );
-    *t = (double) tv.tv_usec * (1.0 / (double) USEC_PER_SEC) +
+    *t = (double) tv.tv_usec * (1.0 / (double) KMP_USEC_PER_SEC) +
         (double) tv.tv_sec;
 # endif
 }
diff --git a/openmp/runtime/src/z_Windows_NT_util.c b/openmp/runtime/src/z_Windows_NT_util.c
index d60f3c50905..bfeb1b18b63 100644
--- a/openmp/runtime/src/z_Windows_NT_util.c
+++ b/openmp/runtime/src/z_Windows_NT_util.c
@@ -799,7 +799,7 @@ __kmp_read_cpu_time( void )
         sec += KernelTime.dwLowDateTime;
         sec += UserTime.dwLowDateTime;
 
-        cpu_time += (sec * 100.0) / NSEC_PER_SEC;
+        cpu_time += (sec * 100.0) / KMP_NSEC_PER_SEC;
     }
 
     return cpu_time;