| /* A test for strength reduction and induction variable elimination. |
| Target is restricted to x86 type architectures, so that we may |
| assume something about memory addressing modes. */ |
| |
| /* { dg-do compile { target i?86-*-* x86_64-*-* } } */ |
| /* APPLE LOCAL begin 4874947 mainline */ |
| /* { dg-skip-if "" { i?86-*-* x86_64-*-* } { "-fpic" "-fPIC" } { "" } } */ |
| /* { dg-options "-O1 -fno-pic -fno-PIC -fdump-tree-optimized" } */ |
| /* LLVM LOCAL test not applicable */ |
| /* { dg-require-fdump "" } */ |
| /* APPLE LOCAL end 4874947 mainline */ |
| |
| int arr_base[100]; |
| |
| int foo(int); |
| |
| void xxx(void) |
| { |
| long iter; |
| |
| for (iter = 0; iter < 100; iter++) |
| arr_base[iter] = foo (iter); |
| } |
| |
| /* Access to arr_base[iter].y should not be strength reduced, since |
| we have a memory mode including multiplication by 4. */ |
| |
| /* { dg-final { scan-tree-dump-times "MEM" 1 "optimized" } } */ |
| /* { dg-final { scan-tree-dump-times "step:" 1 "optimized" } } */ |
| |
| /* And original induction variable should be preserved. */ |
| |
| /* { dg-final { scan-tree-dump-times "int iter" 1 "optimized" } } */ |
| |
| /* { dg-final { cleanup-tree-dump "optimized" } } */ |
