?? 20040703-1.c
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/* { dg-do compile } *//* { dg-options "-O2 -fdump-tree-dom2" } */float foo(float x){ x += 1; x -= 1; return x;}/* We should *not* fold the arithmetic. *//* { dg-final { scan-tree-dump-times "0\\.0" 0 "dom2"} } *//* { dg-final { cleanup-tree-dump "dom2" } } */?? 快捷鍵說明
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