* lib/target-supports.exp (check_effective_target_tls_emulated): New.
* gcc.dg/tls/thr-cse-1.c: New.
From-SVN: r163330
+2010-08-18 Iain Sandoe <iains@gcc.gnu.org>
+
+ * lib/target-supports.exp (check_effective_target_tls_emulated): New.
+ * gcc.dg/tls/thr-cse-1.c: New.
+
2010-08-18 Iain Sandoe <iains@gcc.gnu.org>
PR debug/42487
--- /dev/null
+/* { dg-do compile } */
+/* { dg-options "-O1" } */
+/* { dg-require-effective-target tls_emulated } */
+
+/* Test that we only get one call to emutls_get_address when CSE is
+ active. Note that the var _must_ be initialized for the scan asm
+ to work, since otherwise there will be an initializer which will,
+ correctly, call emutls_get_address. */
+int foo (int b, int c, int d)
+{
+ static __thread int a=1;
+ a += b;
+ a -= c;
+ a += d;
+ return a;
+}
+
+/* { dg-final { scan-assembler-not "emutls_get_address.*emutls_get_address.*" { target { { ! "*-wrs-vxworks" } && { ! "*-*-darwin8" } } } } } */
+/* { dg-final { scan-assembler-not "call\tL___emutls_get_address.stub.*call\tL___emutls_get_address.stub.*" { target "*-*-darwin8" } } } */
+/* { dg-final { scan-assembler-not "tls_lookup.*tls_lookup.*" { target *-wrs-vxworks } } } */
+
}]
}
+# Return 1 if *emulated* thread local storage (TLS) is supported, 0 otherwise.
+
+proc check_effective_target_tls_emulated {} {
+ # VxWorks uses emulated TLS machinery, but with non-standard helper
+ # functions, so we fail to automatically detect it.
+ global target_triplet
+ if { [regexp ".*-.*-vxworks.*" $target_triplet] } {
+ return 1
+ }
+
+ return [check_no_messages_and_pattern tls_emulated "emutls" assembly {
+ __thread int i;
+ int f (void) { return i; }
+ void g (int j) { i = j; }
+ }]
+}
+
# Return 1 if TLS executables can run correctly, 0 otherwise.
proc check_effective_target_tls_runtime {} {