obtained gcc-4.6.4.tar.bz2 from upstream website;upstream

verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
directory might differ from line-endings of the respective
files in the upstream repository.

1 files changed, 236 insertions, 0 deletions

diff --git a/gcc/testsuite/g++.dg/cdce3.C b/gcc/testsuite/g++.dg/cdce3.C
new file mode 100644
index 000000000..e6ca58c46
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cdce3.C
@@ -0,0 +1,236 @@
+/* { dg-do run } */
+/* { dg-require-effective-target c99_runtime } */
+/* { dg-skip-if "exp2* missing despite C99 runtime" { alpha*-dec-osf5* } } */
+/* { dg-options "-O2 -fmath-errno -fdump-tree-cdce-details  -DGNU_EXTENSION -DLARGE_LONG_DOUBLE -lm" { target { pow10 && large_long_double } } } */
+/* { dg-options "-O2 -fmath-errno -fdump-tree-cdce-details -DLARGE_LONG_DOUBLE -lm" { target { {! pow10 } && large_long_double } } } */
+/* { dg-options "-O2 -fmath-errno -fdump-tree-cdce-details -DGNU_EXTENSION -lm" { target { pow10 && {! large_long_double } } } } */
+/* { dg-options "-O2 -fmath-errno -fdump-tree-cdce-details -lm" { target { {! pow10 } && {! large_long_double } } } } */
+/* { dg-add-options ieee } */
+/* { dg-final { scan-tree-dump  "cdce3.C:93: note: function call is shrink-wrapped into error conditions\." "cdce" { target { pow10 } } } } */
+/* { dg-final { scan-tree-dump  "cdce3.C:94: note: function call is shrink-wrapped into error conditions\." "cdce" { target { pow10 } } } } */
+/* { dg-final { scan-tree-dump  "cdce3.C:96: note: function call is shrink-wrapped into error conditions\." "cdce" } } */
+/* { dg-final { scan-tree-dump  "cdce3.C:97: note: function call is shrink-wrapped into error conditions\." "cdce" } } */
+/* { dg-final { scan-tree-dump  "cdce3.C:98: note: function call is shrink-wrapped into error conditions\." "cdce" } } */
+/* { dg-final { scan-tree-dump  "cdce3.C:99: note: function call is shrink-wrapped into error conditions\." "cdce" } } */
+/* { dg-final { scan-tree-dump  "cdce3.C:100: note: function call is shrink-wrapped into error conditions\." "cdce" } } */
+/* { dg-final { scan-tree-dump  "cdce3.C:101: note: function call is shrink-wrapped into error conditions\." "cdce" } } */
+/* { dg-final { scan-tree-dump  "cdce3.C:102: note: function call is shrink-wrapped into error conditions\." "cdce" } } */
+/* { dg-final { scan-tree-dump  "cdce3.C:103: note: function call is shrink-wrapped into error conditions\." "cdce" } } */
+/* { dg-final { scan-tree-dump  "cdce3.C:104: note: function call is shrink-wrapped into error conditions\." "cdce" } } */
+/* { dg-final { scan-tree-dump  "cdce3.C:105: note: function call is shrink-wrapped into error conditions\." "cdce" } } */
+/* { dg-final { scan-tree-dump  "cdce3.C:106: note: function call is shrink-wrapped into error conditions\." "cdce" } } */
+/* { dg-final { scan-tree-dump  "cdce3.C:107: note: function call is shrink-wrapped into error conditions\." "cdce" } } */
+/* { dg-final { scan-tree-dump  "cdce3.C:108: note: function call is shrink-wrapped into error conditions\." "cdce" } } */
+/* { dg-final { scan-tree-dump  "cdce3.C:109: note: function call is shrink-wrapped into error conditions\." "cdce" } } */
+/* { dg-final { cleanup-tree-dump "cdce" } } */
+#include <stdlib.h>
+#include <math.h>
+#ifdef DEBUG
+#include <stdio.h>
+#endif
+#include <errno.h>
+typedef void (*FP) (int xp);
+#define NI __attribute__((noinline))
+
+#if defined(LARGE_LONG_DOUBLE)
+typedef long double ldouble; 
+ldouble result;
+
+#define DEF_MATH_FUNC(prefix, name) NI void prefix##name##f (int x) \
+{ \
+  float yy = name##f ((float) x); \
+  STORE_RESULT; \
+} \
+NI void prefix##name (int x) \
+{ \
+  double yy = name ((double)x); \
+  STORE_RESULT; \
+} \
+NI void prefix##name##l (int x) \
+{ \
+  ldouble yy = name##l ((ldouble)x); \
+  STORE_RESULT; \
+}
+#else
+double result;
+
+#define DEF_MATH_FUNC(prefix, name) NI void prefix##name##f (int x) \
+{ \
+  float yy = name##f ((float) x); \
+  STORE_RESULT; \
+} \
+NI void prefix##name (int x) \
+{ \
+  double yy = name ((double)x); \
+  STORE_RESULT; \
+}
+#endif
+
+#undef STORE_RESULT
+#define STORE_RESULT result = yy
+#if defined(GNU_EXTENSION)
+DEF_MATH_FUNC (m,pow10)
+DEF_MATH_FUNC (m,exp10)
+#endif
+DEF_MATH_FUNC (m,exp2)
+DEF_MATH_FUNC (m,exp)
+DEF_MATH_FUNC (m,expm1)
+DEF_MATH_FUNC (m,cosh)
+DEF_MATH_FUNC (m,sinh)
+DEF_MATH_FUNC (m,acos)
+DEF_MATH_FUNC (m,asin)
+DEF_MATH_FUNC (m,acosh)
+DEF_MATH_FUNC (m,atanh)
+DEF_MATH_FUNC (m,log)
+DEF_MATH_FUNC (m,log2)
+DEF_MATH_FUNC (m,log10)
+DEF_MATH_FUNC (m,log1p)
+DEF_MATH_FUNC (m,sqrt)
+
+#undef STORE_RESULT
+#define STORE_RESULT
+#if defined(GNU_EXTENSION)
+DEF_MATH_FUNC (o,pow10)
+DEF_MATH_FUNC (o,exp10)
+#endif
+DEF_MATH_FUNC (o,exp2)
+DEF_MATH_FUNC (o,exp)
+DEF_MATH_FUNC (o,expm1)
+DEF_MATH_FUNC (o,cosh)
+DEF_MATH_FUNC (o,sinh)
+DEF_MATH_FUNC (o,acos)
+DEF_MATH_FUNC (o,asin)
+DEF_MATH_FUNC (o,acosh)
+DEF_MATH_FUNC (o,atanh)
+DEF_MATH_FUNC (o,log)
+DEF_MATH_FUNC (o,log2)
+DEF_MATH_FUNC (o,log10)
+DEF_MATH_FUNC (o,log1p)
+DEF_MATH_FUNC (o,sqrt)
+
+#if defined(LARGE_LONG_DOUBLE)
+#define INIT_MATH_FUNC(prefix, name, lb, ub) { prefix##name##f, #name "f", 0, 0, lb, ub }, \
+{ prefix##name, #name, 0, 0, lb, ub }, \
+{ prefix##name##l, #name "l" , 0, 0, lb, ub }, 
+#else
+#define INIT_MATH_FUNC(prefix, name, lb, ub) { prefix##name##f, #name "f", 0, 0, lb, ub }, \
+{ prefix##name, #name, 0, 0, lb, ub },
+#endif
+
+struct MathFuncInfo
+{
+  FP math_func;
+  const char*  name;
+  int lb;
+  int ub;
+  bool has_lb;
+  bool has_ub;
+} math_func_arr[] = { 
+#if defined(GNU_EXTENSION)
+  INIT_MATH_FUNC (m,pow10, false, true)
+  INIT_MATH_FUNC (m,exp10, false, true)
+#endif
+  INIT_MATH_FUNC (m,exp2, false, true)
+  INIT_MATH_FUNC (m,expm1, false, true)
+  INIT_MATH_FUNC (m,exp, false, true)
+  INIT_MATH_FUNC (m,cosh, true, true)
+  INIT_MATH_FUNC (m,sinh, true, true)
+  INIT_MATH_FUNC (m,acos, true, true)
+  INIT_MATH_FUNC (m,asin, true, true)
+  INIT_MATH_FUNC (m,acosh, true, false)
+  INIT_MATH_FUNC (m,atanh, true, true)
+  INIT_MATH_FUNC (m,log10, true, false)
+  INIT_MATH_FUNC (m,log, true, false)
+  INIT_MATH_FUNC (m,log2, true, false)
+  INIT_MATH_FUNC (m,log1p, true, false)
+  INIT_MATH_FUNC (m,sqrt, true, false)
+  { 0, 0,  0, 0, 0, 0} };
+
+MathFuncInfo opt_math_func_arr[] = 
+{
+#if defined(GNU_EXTENSION)
+  INIT_MATH_FUNC (o,pow10, false, true)
+  INIT_MATH_FUNC (o,exp10, false, true)
+#endif
+  INIT_MATH_FUNC (o,exp2, false, true)
+  INIT_MATH_FUNC (o,expm1, false, true)
+  INIT_MATH_FUNC (o,exp, false, true)
+  INIT_MATH_FUNC (o,cosh, true, true)
+  INIT_MATH_FUNC (o,sinh, true, true)
+  INIT_MATH_FUNC (o,acos, true, true)
+  INIT_MATH_FUNC (o,asin, true, true)
+  INIT_MATH_FUNC (o,acosh, true, false)
+  INIT_MATH_FUNC (o,atanh, true, true)
+  INIT_MATH_FUNC (o,log10, true, false)
+  INIT_MATH_FUNC (o,log, true, false)
+  INIT_MATH_FUNC (o,log2, true, false)
+  INIT_MATH_FUNC (o,log1p, true, false)
+  INIT_MATH_FUNC (o,sqrt, true, false)
+  { 0, 0,  0, 0, 0, 0} };
+
+int test (MathFuncInfo* math_func_infos)
+{
+  int i = 0;
+  int te = 0;
+
+  for (i = 0; math_func_infos[i].math_func; i++)
+    {
+      MathFuncInfo& info = math_func_infos[i];
+      int j;
+      if (info.has_lb)
+        {
+          for (j = 0; j > -500000; j--)
+            {
+        
+              errno = 0;
+              info.math_func (j);
+              if (errno != 0)
+                {
+		  te++;
+                  info.lb = j ;
+                  break;
+                }
+            }
+        }
+      if (info.has_ub)
+        {
+          for (j = 0; j < 500000; j++)
+            {
+              errno = 0;
+              info.math_func (j);
+              if (errno != 0)
+              {
+	        te++;
+                info.ub = j ;
+                break;
+              }
+            }
+        }
+    }
+  return te;
+}
+
+int main()
+{
+   int te1, te2;
+
+   te1 = test (&math_func_arr[0]);
+   te2 = test (&opt_math_func_arr[0]);
+
+   // Now examine the result 
+   int i = 0;
+   int errcnt = 0;
+   for (i = 0; math_func_arr[i].math_func; i++)
+   {
+      MathFuncInfo& info = math_func_arr[i];
+      MathFuncInfo& opt_info = opt_math_func_arr[i];
+#ifdef DEBUG
+      fprintf (stderr," %s: lb = %d, ub = %d: lb_opt = %d, ub_opt = %d\n",
+	info.name, info.lb, info.ub, opt_info.lb, opt_info.ub);
+#endif
+      if (info.lb != opt_info.lb) errcnt ++;
+      if (info.ub != opt_info.ub) errcnt ++;
+   }
+   if (errcnt) abort();
+   return 0;
+}