re PR tree-optimization/67741 (Invalid built-in usage should not cause…

re PR tree-optimization/67741 (Invalid built-in usage should not cause segmentation fault in compiler)

2015-09-29  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/67741
	* tree-ssa-math-opts.c (pass_cse_sincos::execute): Only recognize
	builtin calls with correct signature.

	* gcc.dg/torture/pr67741.c: New testcase.

From-SVN: r228243

gcc/ChangeLog

+2015-09-29  Richard Biener  <rguenther@suse.de>
+
+	PR tree-optimization/67741
+	* tree-ssa-math-opts.c (pass_cse_sincos::execute): Only recognize
+	builtin calls with correct signature.
+
 2015-09-29  Ilya Enkovich  <enkovich.gnu@gmail.com>
 
 	PR target/65105

gcc/testsuite/ChangeLog

+2015-09-29  Richard Biener  <rguenther@suse.de>
+
+	PR tree-optimization/67741
+	* gcc.dg/torture/pr67741.c: New testcase.
+
 2015-09-29  Uros Bizjak  <ubizjak@gmail.com>
 
 	* gcc.dg/tg-tests.h (foo_1) [UNSAFE]: Also check if f and ld are

gcc/testsuite/gcc.dg/torture/pr67741.c

+/* { dg-do compile } */
+
+struct singlecomplex { float real, imag ; } ;
+struct doublecomplex { double real, imag ; } ;
+struct extendedcomplex { long double real, imag ; } ;
+extern double cabs();
+float cabsf(fc)
+     struct singlecomplex fc;  /* { dg-warning "doesn't match" } */
+{
+  struct doublecomplex dc ;
+  dc.real=fc.real; dc.imag=fc.imag;
+  return (float) cabs(dc);
+}

gcc/tree-ssa-math-opts.c

@@ -1738,15 +1738,14 @@ pass_cse_sincos::execute (function *fun)
 	     of a basic block.  */
 	  cleanup_eh = false;
 
-	  if (is_gimple_call (stmt)
-	      && gimple_call_lhs (stmt)
-	      && (fndecl = gimple_call_fndecl (stmt))
-	      && DECL_BUILT_IN_CLASS (fndecl) == BUILT_IN_NORMAL)
+	  if (gimple_call_builtin_p (stmt, BUILT_IN_NORMAL)
+	      && gimple_call_lhs (stmt))
 	    {
 	      tree arg, arg0, arg1, result;
 	      HOST_WIDE_INT n;
 	      location_t loc;
 
+	      fndecl = gimple_call_fndecl (stmt);
 	      switch (DECL_FUNCTION_CODE (fndecl))
 		{
 		CASE_FLT_FN (BUILT_IN_COS):