tree-ssa-math-opts.c (execute_convert_to_rsqrt): Remove.

	* tree-ssa-math-opts.c (execute_convert_to_rsqrt): Remove.
	(gate_convert_to_rsqrt): Ditto.
	(pass_convert_to_rsqrt): Ditto.
	* tree-pass.h (pass_convert_to_rsqrt): Don't declare.
	* passes.c (init_optimization_passes): Don't add pass_convert_to_rsqrt
	to pass list.

	* config/i386/i386.c (ix86_emit_swdivsf): Change evaluation order.

testsuite/
	* gcc.target/i386/sse-recip.c: Use fabsf instead of != .
	* gcc.target/i386/sse-recip-vec.c: Ditto.
	* gcc.target/i386/brokensqrt.c: New test.

From-SVN: r153713

1 files changed, 0 insertions, 92 deletions

diff --git a/gcc/tree-ssa-math-opts.c b/gcc/tree-ssa-math-opts.c
index 11ce546..f0fcc2b 100644
--- a/gcc/tree-ssa-math-opts.c
+++ b/gcc/tree-ssa-math-opts.c
@@ -791,98 +791,6 @@ struct gimple_opt_pass pass_cse_sincos =
  }
 };
 
-/* Find all expressions in the form of sqrt(a/b) and
-   convert them to rsqrt(b/a).  */
-
-static unsigned int
-execute_convert_to_rsqrt (void)
-{
-  basic_block bb;
-
-  FOR_EACH_BB (bb)
-    {
-      gimple_stmt_iterator gsi;
-
-      for (gsi = gsi_after_labels (bb); !gsi_end_p (gsi); gsi_next (&gsi))
-        {
-	  gimple stmt = gsi_stmt (gsi);
-	  tree fndecl;
-
-	  if (is_gimple_call (stmt)
-	      && gimple_call_lhs (stmt)
-	      && (fndecl = gimple_call_fndecl (stmt))
-	      && (DECL_BUILT_IN_CLASS (fndecl) == BUILT_IN_NORMAL
-		  || DECL_BUILT_IN_CLASS (fndecl) == BUILT_IN_MD))
-	    {
-	      enum built_in_function code;
-	      bool md_code;
-	      tree arg1;
-	      gimple stmt1;
-
-	      code = DECL_FUNCTION_CODE (fndecl);
-	      md_code = DECL_BUILT_IN_CLASS (fndecl) == BUILT_IN_MD;
-
-	      fndecl = targetm.builtin_reciprocal (code, md_code, true);
-	      if (!fndecl)
-		continue;
-
-	      arg1 = gimple_call_arg (stmt, 0);
-
-	      if (TREE_CODE (arg1) != SSA_NAME)
-		continue;
-
-	      stmt1 = SSA_NAME_DEF_STMT (arg1);
-
-	      if (is_gimple_assign (stmt1)
-		  && gimple_assign_rhs_code (stmt1) == RDIV_EXPR)
-		{
-		  tree arg10, arg11;
-
-		  arg10 = gimple_assign_rhs1 (stmt1);
-		  arg11 = gimple_assign_rhs2 (stmt1);
-
-		  /* Swap operands of RDIV_EXPR.  */
-		  gimple_assign_set_rhs1 (stmt1, arg11);
-		  gimple_assign_set_rhs2 (stmt1, arg10);
-		  fold_stmt_inplace (stmt1);
-		  update_stmt (stmt1);
-
-		  gimple_call_set_fndecl (stmt, fndecl);
-		  update_stmt (stmt);
-		}
-	    }
-	}
-    }
-
-  return 0;
-}
-
-static bool
-gate_convert_to_rsqrt (void)
-{
-  return flag_unsafe_math_optimizations && optimize;
-}
-
-struct gimple_opt_pass pass_convert_to_rsqrt =
-{
- {
-  GIMPLE_PASS,
-  "rsqrt",				/* name */
-  gate_convert_to_rsqrt,		/* gate */
-  execute_convert_to_rsqrt,		/* execute */
-  NULL,					/* sub */
-  NULL,					/* next */
-  0,					/* static_pass_number */
-  TV_NONE,				/* tv_id */
-  PROP_ssa,				/* properties_required */
-  0,					/* properties_provided */
-  0,					/* properties_destroyed */
-  0,					/* todo_flags_start */
-  TODO_dump_func | TODO_update_ssa | TODO_verify_ssa
-    | TODO_verify_stmts                 /* todo_flags_finish */
- }
-};
-
 /* A symbolic number is used to detect byte permutation and selection
    patterns.  Therefore the field N contains an artificial number
    consisting of byte size markers: