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/* { dg-do compile } */
/* { dg-options "-O -fstrict-overflow -fdump-tree-empty" } */
void foo(int a, int b)
{ for(;a!=b;a+=4); }
void foo2(int a, int b)
{ for(;a<b;a+=4); }
void foo3(int*a, int* b)
{ for(;a<b;a++); }
void foo4(int*a, int*b)
{ for(;a!=b;a++); }
/* { dg-final { scan-tree-dump-times "Removing empty loop" 4 "empty" } } */
/* { dg-final { cleanup-tree-dump "empty" } } */
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