2022-03-08  Marek Polacek  <polacek@redhat.com>

	PR rtl-optimization/104777
	* rtl.cc (classify_insn): For ASM_OPERANDS, return JUMP_INSN only if
	ASM_OPERANDS_LABEL_VEC has at least one element.

	* gcc.dg/torture/tls/pr104777.c: New test.

--- gcc/rtl.cc
+++ gcc/rtl.cc
@@ -765,7 +765,7 @@ classify_insn (rtx x)
     return CALL_INSN;
   if (ANY_RETURN_P (x))
     return JUMP_INSN;
-  if (GET_CODE (x) == ASM_OPERANDS && ASM_OPERANDS_LABEL_VEC (x))
+  if (GET_CODE (x) == ASM_OPERANDS && ASM_OPERANDS_LABEL_LENGTH (x))
     return JUMP_INSN;
   if (GET_CODE (x) == SET)
     {
@@ -794,7 +794,7 @@ classify_insn (rtx x)
       if (has_return_p)
 	return JUMP_INSN;
       if (GET_CODE (XVECEXP (x, 0, 0)) == ASM_OPERANDS
-	  && ASM_OPERANDS_LABEL_VEC (XVECEXP (x, 0, 0)))
+	  && ASM_OPERANDS_LABEL_LENGTH (XVECEXP (x, 0, 0)))
 	return JUMP_INSN;
     }
 #ifdef GENERATOR_FILE
--- gcc/testsuite/gcc.dg/torture/tls/pr104777.c
+++ gcc/testsuite/gcc.dg/torture/tls/pr104777.c
@@ -0,0 +1,30 @@
+/* PR rtl-optimization/104777 */
+/* { dg-do compile } */
+/* { dg-require-effective-target tls } */
+ 
+int savestate_r;
+int savestate_ssb;
+extern void abort();
+__thread int  loop;
+void f (void)
+{
+  int savestate_r0_5;
+  int savestate_r1_6;
+
+  __asm__("" : "=m" (savestate_ssb), "=r" (savestate_r));
+  savestate_r0_5 = savestate_r;
+  if (savestate_r0_5 == 0)
+  {
+    __asm__ __volatile__("" :  : "m" (loop));
+    abort ();
+  }
+
+  __asm__("" : "=m" (savestate_ssb), "=r" (savestate_r));
+  savestate_r1_6 = savestate_r;
+  if (savestate_r1_6 != 0)
+    return;
+
+  __asm__ __volatile__("" :  : "m" (loop));
+  abort ();
+
+}