2010-12-07 Richard Guenther <rguenther@suse.de>

	PR tree-optimization/46832
	* tree-ssa-math-opts.c (execute_optimize_widening_mul): Check
	that the call has a lhs.

	* gcc.c-torture/compile/pr46832.c: New testcase.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@167535 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index fb4a27b..e2dda11 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2010-12-07  Richard Guenther  <rguenther@suse.de>
+
+       PR tree-optimization/46832
+       * tree-ssa-math-opts.c (execute_optimize_widening_mul): Check
+       that the call has a lhs.
+

 2010-12-07  Yao Qi  <yao@codesourcery.com>
 
        * Makefile.in: Add $(TARGET_H) to the regrename.o rule.
 2010-12-07  Yao Qi  <yao@codesourcery.com>
 
        * Makefile.in: Add $(TARGET_H) to the regrename.o rule.

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index c77146d..3ff9cd8 100644 (file)
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2010-12-07  Richard Guenther  <rguenther@suse.de>
+
+       PR tree-optimization/46832
+       * gcc.c-torture/compile/pr46832.c: New testcase.
+

 2010-12-07  Jakub Jelinek  <jakub@redhat.com>
 
        PR debug/46799
 2010-12-07  Jakub Jelinek  <jakub@redhat.com>
 
        PR debug/46799

diff --git a/gcc/testsuite/gcc.c-torture/compile/pr46832.c b/gcc/testsuite/gcc.c-torture/compile/pr46832.c
new file mode 100644 (file)
index 0000000..f500aa5
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/compile/pr46832.c
@@ -0,0 +1,4 @@
+double pow(double x, double y);
+void foo( double x ) {
+   int j = (int) ((pow(x, 2)) < 0.0 ? (pow(x, 2))-0.5 : (pow(x, 2))+0.5);
+}

diff --git a/gcc/tree-ssa-math-opts.c b/gcc/tree-ssa-math-opts.c
index e8f9037..ed9b7a9 100644 (file)
--- a/gcc/tree-ssa-math-opts.c
+++ b/gcc/tree-ssa-math-opts.c
@@ -1707,7 +1707,8 @@ execute_optimize_widening_mul (void)
                default:;
                }
            }
                default:;
                }
            }

-         else if (is_gimple_call (stmt))
+         else if (is_gimple_call (stmt)
+                  && gimple_call_lhs (stmt))

            {
              tree fndecl = gimple_call_fndecl (stmt);
              if (fndecl
            {
              tree fndecl = gimple_call_fndecl (stmt);
              if (fndecl