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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/fold-eqandshift-1.c | |
| download | cbb-gcc-4.6.4-554fd8c5195424bdbcabf5de30fdc183aba391bd.tar.bz2 cbb-gcc-4.6.4-554fd8c5195424bdbcabf5de30fdc183aba391bd.tar.xz | |
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Diffstat (limited to 'gcc/testsuite/gcc.dg/fold-eqandshift-1.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/fold-eqandshift-1.c | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/fold-eqandshift-1.c b/gcc/testsuite/gcc.dg/fold-eqandshift-1.c new file mode 100644 index 000000000..055f398af --- /dev/null +++ b/gcc/testsuite/gcc.dg/fold-eqandshift-1.c @@ -0,0 +1,56 @@ +/* PR middle-end/21137 */ +/* { dg-do compile } */ +/* { dg-options "-O2 -fdump-tree-original" } */ +extern void foo(); + +void test1(int a) +{ + if ((a >> 3) & 1) + foo (); +} + +void test2(int b) +{ + if ((b >> 3) & 4) + foo (); +} + +int test3(int c) +{ + return (c >> 3) & 1; +} + +int test4(int d) +{ + return (d >> 3) & 4; +} + +#if __INT_MAX__ == 32767 +#define INT_BITS 16 +#elif __INT_MAX__ == 2147483647 +#define INT_BITS 32 +#elif __INT_MAX__ == 9223372036854775807 +#define INT_BITS 64 +#else +#error Please add support for your target here. +#endif + +void test5(int e) +{ + if ((e >> (INT_BITS - 1)) & 64) + foo(); +} + +void test6(unsigned int f) +{ + if ((f >> (INT_BITS - 1)) & 64) + foo(); +} + +/* { dg-final { scan-tree-dump-times "\\(a \& 8\\) != 0" 1 "original" } } */ +/* { dg-final { scan-tree-dump-times "\\(b \& 32\\) != 0" 1 "original" } } */ +/* { dg-final { scan-tree-dump-times "c >> 3 \& 1" 1 "original" } } */ +/* { dg-final { scan-tree-dump-times "d >> 3 \& 4" 1 "original" } } */ +/* { dg-final { scan-tree-dump-times "e < 0" 1 "original" } } */ +/* { dg-final { scan-tree-dump-times "if \\(0\\)" 1 "original" } } */ +/* { dg-final { cleanup-tree-dump "original" } } */ |