diff options
Diffstat (limited to 'gcc-4.9/gcc/testsuite/gcc.target/aarch64/pr62262.c')
-rw-r--r-- | gcc-4.9/gcc/testsuite/gcc.target/aarch64/pr62262.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.target/aarch64/pr62262.c b/gcc-4.9/gcc/testsuite/gcc.target/aarch64/pr62262.c index 5bf90bf7f..20763b499 100644 --- a/gcc-4.9/gcc/testsuite/gcc.target/aarch64/pr62262.c +++ b/gcc-4.9/gcc/testsuite/gcc.target/aarch64/pr62262.c @@ -18,3 +18,23 @@ int foo(int value) int packed = (unsigned)(value << 9) >> 9; return packed; } +/* { dg-do compile } */ +/* { dg-options "-O2 -fprofile-use" } */ + +static inline int CLZ(int mask) { + return mask ? __builtin_clz(mask) : 32; +} + +int foo(int value) +{ + if (value == 0) + return 0; + + int bias = CLZ(value); + value >>= bias; + int zeros = CLZ(value << 1); + value <<= zeros; + + int packed = (unsigned)(value << 9) >> 9; + return packed; +} |