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re PR tree-optimization/39417 (Incorrect values computed with -ftree-copy-prop) 

2010-04-20  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/39417
	* g++.dg/torture/pr39417.C: New testcase.

From-SVN: r158560
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Richard Guenther 2010-04-20 14:18:35 +00:00 committed by Richard Biener
parent 3c323b522a
commit 48e5069861
2 changed files with 61 additions and 0 deletions
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5
gcc/testsuite/ChangeLog
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2010-04-20 Richard Guenther <rguenther@suse.de>
PR tree-optimization/39417
* g++.dg/torture/pr39417.C: New testcase.
2010-04-20 Richard Guenther <rguenther@suse.de>
* gcc.dg/ipa/ipa-pta-14.c: New testcase.

56
gcc/testsuite/g++.dg/torture/pr39417.C Normal file
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// { dg-do run }
#include <vector>
std::vector <int>
sequence(int l, int n)
{
std::vector <int> ret;
for(int i=n;i<=100;i++)
{
if(i%2==0)
{
if(l%i==i/2)
{
int init =l/i-i/2+1;
if(init>=0)
{
for(int j=0;j<i;j++)
{
ret.push_back(init);
init ++;
}
break;
}
}
}
else
{
if(l%i==0)
{
int init =l/i-i/2;
if(init>=0)
{
for(int j=0;j<i;j++)
{
ret.push_back(init);
init ++;
}
break;
}
}
}
}
return ret;
}
extern "C" void abort (void);
int main()
{
std::vector<int> res = sequence(18, 2);
if (res.size () != 3
|| res[0] != 5
|| res[1] != 6
|| res[2] != 7)
abort ();
return 0;
}