+ PR middle-end/52142 + * ipa-inline.c (can_inline_edge_p): Do not inline...

+       PR middle-end/52142
+       * ipa-inline.c (can_inline_edge_p): Do not inline tm_pure
+       functions into non-tm_pure functions.

From-SVN: r184251

gcc/ChangeLog

+2012-02-14  Aldy Hernandez  <aldyh@redhat.com>
+
+	PR middle-end/52142
+	* ipa-inline.c (can_inline_edge_p): Do not inline tm_pure
+	functions into non-tm_pure functions.
+
 2012-02-14  Eric Botcazou  <ebotcazou@adacore.com>
 
 	PR lto/52178

gcc/ipa-inline.c

@@ -284,10 +284,10 @@ can_inline_edge_p (struct cgraph_edge *e, bool report)
       e->inline_failed = CIF_EH_PERSONALITY;
       inlinable = false;
     }
-  /* TM pure functions should not get inlined if the outer function is
-     a TM safe function.  */
+  /* TM pure functions should not be inlined into non-TM_pure
+     functions.  */
   else if (is_tm_pure (callee->decl)
-	   && is_tm_safe (e->caller->decl))
+	   && !is_tm_pure (e->caller->decl))
     {
       e->inline_failed = CIF_UNSPECIFIED;
       inlinable = false;

gcc/testsuite/gcc.dg/tm/pr52141.c

+/* { dg-do compile } */
+/* { dg-options "-fgnu-tm -O1" } */
+
+inline void asmfunc(void)
+{
+  __asm__ (""); /* { dg-error "asm not allowed in .transaction_safe" } */
+}
+
+__attribute__((transaction_safe))
+static void f(void)
+{
+  asmfunc();
+}
+
+int main()
+{
+  __transaction_atomic {
+    f();
+  }
+  return 0;
+}

gcc/testsuite/gcc.dg/tm/pr52142.c

+/* { dg-do compile } */
+/* { dg-options "-fgnu-tm -O1" } */
+static int global = 0;
+
+__attribute__((transaction_pure))
+static inline void purefunc()
+{
+  global++;
+}
+
+__attribute__((transaction_safe))
+void f();
+
+void push()
+{
+  __transaction_atomic {
+        f();
+    purefunc();
+  }
+}
+
+/* { dg-final { scan-assembler-not "_ITM_RfWU4" } } */

gcc/trans-mem.c

@@ -3736,6 +3736,10 @@ ipa_tm_scan_irr_block (basic_block bb)
 	     assembly statement is not relevant to the transaction
 	     is to wrap it in a __tm_waiver block.  This is not
 	     yet implemented, so we can't check for it.  */
+	  if (is_tm_safe (current_function_decl))
+	    error_at (gimple_location (stmt),
+		      "asm not allowed in %<transaction_safe%> function %qE",
+		      current_function_decl);
 	  return true;
 
 	default: