re PR middle-end/52650 (FAIL: gcc.dg/torture/pr51106-2.c * (internal compiler error))

	PR middle-end/52650
	* function.c (instantiate_virtual_regs_in_insn): Don't delete invalid
	asm gotos, instead just clear their template and inputs.

From-SVN: r193846

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 23ec9aa..5a18b15 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,9 @@
 2012-11-27  Jakub Jelinek  <jakub@redhat.com>
 
+       PR middle-end/52650
+       * function.c (instantiate_virtual_regs_in_insn): Don't delete invalid
+       asm gotos, instead just clear their template and inputs.
+
        PR tree-optimization/55110
        * tree-vect-loop.c (vectorizable_reduction): Don't assert
        that STMT_VINFO_RELATED_STMT of orig_stmt is stmt.

diff --git a/gcc/function.c b/gcc/function.c
index 9a8e0ae..9ef6f77 100644 (file)
--- a/gcc/function.c
+++ b/gcc/function.c
@@ -1738,7 +1738,18 @@ instantiate_virtual_regs_in_insn (rtx insn)
       if (!check_asm_operands (PATTERN (insn)))
        {
          error_for_asm (insn, "impossible constraint in %<asm%>");
-         delete_insn_and_edges (insn);
+         /* For asm goto, instead of fixing up all the edges
+            just clear the template and clear input operands
+            (asm goto doesn't have any output operands).  */
+         if (JUMP_P (insn))
+           {
+             rtx asm_op = extract_asm_operands (PATTERN (insn));
+             ASM_OPERANDS_TEMPLATE (asm_op) = ggc_strdup ("");
+             ASM_OPERANDS_INPUT_VEC (asm_op) = rtvec_alloc (0);
+             ASM_OPERANDS_INPUT_CONSTRAINT_VEC (asm_op) = rtvec_alloc (0);
+           }
+         else
+           delete_insn (insn);
        }
     }
   else