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| author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
|---|---|---|
| committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
| commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
| tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /gcc/testsuite/gcc.dg/no-strict-overflow-6.c | |
| download | cbb-gcc-4.6.4-15d2061ac0796199866debe9ac87130894b0cdd3.tar.bz2 cbb-gcc-4.6.4-15d2061ac0796199866debe9ac87130894b0cdd3.tar.xz | |
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Diffstat (limited to 'gcc/testsuite/gcc.dg/no-strict-overflow-6.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/no-strict-overflow-6.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/no-strict-overflow-6.c b/gcc/testsuite/gcc.dg/no-strict-overflow-6.c new file mode 100644 index 000000000..43200bb20 --- /dev/null +++ b/gcc/testsuite/gcc.dg/no-strict-overflow-6.c @@ -0,0 +1,21 @@ +/* { dg-do compile } */ +/* { dg-options "-fno-strict-overflow -O2 -fdump-tree-optimized" } */ + +/* Source: Ian Lance Taylor. */ + +/* VRP test. We can not simplify the conditional when not using + strict overflow semantics. We don't test this with + -fstrict-overflow because it turns into an infinite loop. That is + OK but it would also be OK to not do that. */ + +int +foo () +{ + int i, bits; + for (i = 1, bits = 1; i > 0; i += i) + ++bits; + return bits; +} + +/* { dg-final { scan-tree-dump "return bits" "optimized" } } */ +/* { dg-final { cleanup-tree-dump "optimized" } } */ |