openmp: Avoid PLT relocations for omp_* symbols in libgomp

This patch avoids the following relocations:
readelf -Wr libgomp.so.1.0.0 | grep omp_
00000000000470e0  0000020700000007 R_X86_64_JUMP_SLOT     000000000001d9d0 omp_fulfill_event@@OMP_5.0.1 + 0
0000000000047170  000000b800000007 R_X86_64_JUMP_SLOT     000000000000e760 omp_display_env@@OMP_5.1 + 0
00000000000471e0  000000e800000007 R_X86_64_JUMP_SLOT     000000000000f910 omp_get_initial_device@@OMP_4.5 + 0
0000000000047280  0000019500000007 R_X86_64_JUMP_SLOT     0000000000015940 omp_get_active_level@@OMP_3.0 + 0
00000000000472c8  0000020d00000007 R_X86_64_JUMP_SLOT     0000000000035210 omp_get_team_num@@OMP_4.0 + 0
00000000000472f0  0000014700000007 R_X86_64_JUMP_SLOT     0000000000035200 omp_get_num_teams@@OMP_4.0 + 0
by using ialias{,_call,_redirect} macros as needed.

We still have many acc_* PLT relocations, could somebody please fix those?
readelf -Wr libgomp.so.1.0.0 | grep acc_
0000000000046fb8  000001ed00000006 R_X86_64_GLOB_DAT      0000000000036350 acc_prof_unregister@@OACC_2.5.1 + 0
0000000000046fd8  000000a400000006 R_X86_64_GLOB_DAT      0000000000035f30 acc_prof_register@@OACC_2.5.1 + 0
0000000000046fe0  000001d100000006 R_X86_64_GLOB_DAT      0000000000035ee0 acc_prof_lookup@@OACC_2.5.1 + 0
0000000000047058  000001dd00000007 R_X86_64_JUMP_SLOT     0000000000031f40 acc_create_async@@OACC_2.5 + 0
0000000000047068  0000011500000007 R_X86_64_JUMP_SLOT     000000000002fc60 acc_get_property@@OACC_2.6 + 0
0000000000047070  000001fb00000007 R_X86_64_JUMP_SLOT     0000000000032ce0 acc_wait_all@@OACC_2.0 + 0
0000000000047080  0000006500000007 R_X86_64_JUMP_SLOT     000000000002f990 acc_on_device@@OACC_2.0 + 0
0000000000047088  000000ae00000007 R_X86_64_JUMP_SLOT     0000000000032140 acc_attach_async@@OACC_2.6 + 0
0000000000047090  0000021900000007 R_X86_64_JUMP_SLOT     000000000002f550 acc_get_device_type@@OACC_2.0 + 0
0000000000047098  000001cb00000007 R_X86_64_JUMP_SLOT     0000000000032090 acc_copyout_finalize@@OACC_2.5 + 0
00000000000470a8  0000005200000007 R_X86_64_JUMP_SLOT     0000000000031f80 acc_copyin@@OACC_2.0 + 0
00000000000470b8  000001ad00000007 R_X86_64_JUMP_SLOT     0000000000032030 acc_delete_finalize@@OACC_2.5 + 0
00000000000470e8  0000010900000007 R_X86_64_JUMP_SLOT     0000000000031f00 acc_create@@OACC_2.0 + 0
00000000000470f8  0000005900000007 R_X86_64_JUMP_SLOT     0000000000032b70 acc_wait_async@@OACC_2.0 + 0
0000000000047110  0000013100000007 R_X86_64_JUMP_SLOT     0000000000032860 acc_async_test@@OACC_2.0 + 0
0000000000047118  000001ff00000007 R_X86_64_JUMP_SLOT     000000000002f720 acc_get_device_num@@OACC_2.0 + 0
0000000000047128  0000019100000007 R_X86_64_JUMP_SLOT     0000000000032020 acc_delete_async@@OACC_2.5 + 0
0000000000047130  000001d200000007 R_X86_64_JUMP_SLOT     000000000002efa0 acc_shutdown@@OACC_2.0 + 0
0000000000047150  000000d000000007 R_X86_64_JUMP_SLOT     0000000000031f00 acc_present_or_create@@OACC_2.0 + 0
0000000000047188  0000019200000007 R_X86_64_JUMP_SLOT     0000000000031910 acc_is_present@@OACC_2.0 + 0
0000000000047190  000001aa00000007 R_X86_64_JUMP_SLOT     000000000002fca0 acc_get_property_string@@OACC_2.6 + 0
00000000000471d0  000001bf00000007 R_X86_64_JUMP_SLOT     0000000000032120 acc_update_self_async@@OACC_2.5 + 0
0000000000047200  0000020500000007 R_X86_64_JUMP_SLOT     0000000000032e00 acc_wait_all_async@@OACC_2.0 + 0
0000000000047208  000000a600000007 R_X86_64_JUMP_SLOT     0000000000031790 acc_deviceptr@@OACC_2.0 + 0
0000000000047218  0000007500000007 R_X86_64_JUMP_SLOT     0000000000032000 acc_delete@@OACC_2.0 + 0
0000000000047238  000001e900000007 R_X86_64_JUMP_SLOT     000000000002f3a0 acc_set_device_type@@OACC_2.0 + 0
0000000000047240  000001f600000007 R_X86_64_JUMP_SLOT     000000000002ef20 acc_init@@OACC_2.0 + 0
0000000000047248  0000018800000007 R_X86_64_JUMP_SLOT     0000000000032060 acc_copyout@@OACC_2.0 + 0
0000000000047258  0000021f00000007 R_X86_64_JUMP_SLOT     0000000000032a80 acc_wait@@OACC_2.0 + 0
0000000000047270  000001bc00000007 R_X86_64_JUMP_SLOT     0000000000032100 acc_update_self@@OACC_2.0 + 0
0000000000047288  0000011400000007 R_X86_64_JUMP_SLOT     0000000000032080 acc_copyout_async@@OACC_2.5 + 0
0000000000047290  0000013d00000007 R_X86_64_JUMP_SLOT     000000000002f850 acc_set_device_num@@OACC_2.0 + 0
00000000000472a8  000000c500000007 R_X86_64_JUMP_SLOT     00000000000320e0 acc_update_device_async@@OACC_2.5 + 0
00000000000472c0  0000014600000007 R_X86_64_JUMP_SLOT     0000000000031fc0 acc_copyin_async@@OACC_2.5 + 0
00000000000472f8  0000006a00000007 R_X86_64_JUMP_SLOT     000000000002f310 acc_get_num_devices@@OACC_2.0 + 0
0000000000047350  0000021700000007 R_X86_64_JUMP_SLOT     0000000000031f80 acc_present_or_copyin@@OACC_2.0 + 0
0000000000047360  0000020900000007 R_X86_64_JUMP_SLOT     00000000000320c0 acc_update_device@@OACC_2.0 + 0
0000000000047380  0000008400000007 R_X86_64_JUMP_SLOT     0000000000032950 acc_async_test_all@@OACC_2.0 + 0

2021-10-01  Jakub Jelinek  <jakub@redhat.com>

	* affinity-fmt.c (omp_get_team_num, omp_get_num_teams): Add
	ialias_redirect.
	* env.c (handle_omp_display_env): Use ialias_call.
	* icv-device.c: Move ialias right below each function.
	(omp_get_device_num): Use ialias_call.
	* fortran.c (omp_fulfill_event): Add ialias_redirect.
	* icv.c (omp_get_active_level): Add ialias_redirect.

5 files changed, 18 insertions, 7 deletions

diff --git a/libgomp/affinity-fmt.c b/libgomp/affinity-fmt.c
index 9f40e37..75940b5 100644
--- a/libgomp/affinity-fmt.c
+++ b/libgomp/affinity-fmt.c
@@ -37,6 +37,9 @@
 #include <sys/utsname.h>
 #endif
 
+ialias_redirect (omp_get_team_num)
+ialias_redirect (omp_get_num_teams)
+
 bool
 gomp_print_string (const char *str, size_t len)
 {
diff --git a/libgomp/env.c b/libgomp/env.c
index 9216998..69ce1d2 100644
--- a/libgomp/env.c
+++ b/libgomp/env.c
@@ -1416,7 +1416,7 @@ handle_omp_display_env (void)
     gomp_error ("Invalid value for environment variable OMP_DISPLAY_ENV");
 
   if (display)
-    omp_display_env (verbose);
+    ialias_call (omp_display_env) (verbose);
 }
 
 
diff --git a/libgomp/fortran.c b/libgomp/fortran.c
index 07f9765..d171c79 100644
--- a/libgomp/fortran.c
+++ b/libgomp/fortran.c
@@ -96,6 +96,7 @@ ialias_redirect (omp_destroy_allocator)
 ialias_redirect (omp_set_default_allocator)
 ialias_redirect (omp_get_default_allocator)
 ialias_redirect (omp_display_env)
+ialias_redirect (omp_fulfill_event)
 #endif
 
 #ifndef LIBGOMP_GNU_SYMBOL_VERSIONING
diff --git a/libgomp/icv-device.c b/libgomp/icv-device.c
index f11bdfa..709ceeb 100644
--- a/libgomp/icv-device.c
+++ b/libgomp/icv-device.c
@@ -35,6 +35,8 @@ omp_set_default_device (int device_num)
   icv->default_device_var = device_num >= 0 ? device_num : 0;
 }
 
+ialias (omp_set_default_device)
+
 int
 omp_get_default_device (void)
 {
@@ -42,18 +44,24 @@ omp_get_default_device (void)
   return icv->default_device_var;
 }
 
+ialias (omp_get_default_device)
+
 int
 omp_get_initial_device (void)
 {
   return gomp_get_num_devices ();
 }
 
+ialias (omp_get_initial_device)
+
 int
 omp_get_num_devices (void)
 {
   return gomp_get_num_devices ();
 }
 
+ialias (omp_get_num_devices)
+
 int
 omp_is_initial_device (void)
 {
@@ -61,17 +69,14 @@ omp_is_initial_device (void)
   return 1;
 }
 
+ialias (omp_is_initial_device)
+
 int
 omp_get_device_num (void)
 {
   /* By specification, this is equivalent to omp_get_initial_device
      on the host.  */
-  return omp_get_initial_device ();
+  return ialias_call (omp_get_initial_device) ();
 }
 
-ialias (omp_set_default_device)
-ialias (omp_get_default_device)
-ialias (omp_get_initial_device)
-ialias (omp_get_num_devices)
-ialias (omp_is_initial_device)
 ialias (omp_get_device_num)
diff --git a/libgomp/icv.c b/libgomp/icv.c
index e32e5b2..4b4892f 100644
--- a/libgomp/icv.c
+++ b/libgomp/icv.c
@@ -30,6 +30,8 @@
 #include "gomp-constants.h"
 #include <limits.h>
 
+ialias_redirect (omp_get_active_level)
+
 void
 omp_set_num_threads (int n)
 {