re PR tree-optimization/50763 (ICE: verify_gimple failed: missing PHI def with -ftree-tail-merge)

2011-11-02  Tom de Vries  <tom@codesourcery.com>

	PR tree-optimization/50763
	* g++.dg/pr50763-3.C: New test.

From-SVN: r180785

gcc/testsuite/ChangeLog

 2011-11-02  Tom de Vries  <tom@codesourcery.com>
 
+	PR tree-optimization/50763
+	* g++.dg/pr50763-3.C: New test.
+
+2011-11-02  Tom de Vries  <tom@codesourcery.com>
+
 	PR tree-optimization/50672
 	* g++.dg/pr50672.C: New test.
 

gcc/testsuite/g++.dg/pr50763-3.C

+/* { dg-do compile } */
+/* { dg-require-effective-target ilp32 } */
+/* { dg-options "-O2 -ftree-tail-merge" } */
+
+class v2d {
+public:
+   double x;
+   double y;
+};
+
+class v3d {
+public:
+   double x;
+   v3d() {}
+   v3d(const v2d & cr2Dv) {}
+};
+
+class e2d {
+protected:
+   v2d _Min;
+   v2d _Max;
+public:
+   int cop2d(const v2d & rPnt) const;
+   v2d clp2d(const v2d & rPnt) const;
+};
+
+inline int e2d::cop2d(const v2d & rPnt) const {
+   int bRet = 1;
+   if (rPnt.x < _Min.x) bRet = 0;
+   else if (rPnt.x > _Max.x) bRet = 0;
+   else if (rPnt.y > _Max.y) bRet = 0;
+   return bRet;
+}
+
+inline v2d e2d::clp2d(const v2d & rPnt) const {
+   v2d sRet = rPnt;
+   if (rPnt.x < _Min.x) sRet.x = _Min.x;
+   if (rPnt.y < _Min.y) sRet.y = _Min.y;
+   if (rPnt.x > _Max.x) sRet.x = _Max.x;
+   if (rPnt.y > _Max.y) sRet.y = _Max.y;
+   return sRet;
+}
+
+class sExt {
+protected:
+   e2d _Dom;
+   long eval() const;
+   long evalPoint(const v2d & crUV, v3d & rPnt) const;
+};
+
+long sExt::evalPoint(const v2d & crUV, v3d & rPnt) const {
+   v3d sUV = crUV;
+   if (!_Dom.cop2d(crUV)) {
+      sUV = _Dom.clp2d(crUV);
+   }
+   eval();
+}