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| author | Yiran Wang <yiran@google.com> | 2015-06-23 15:33:17 -0700 |
|---|---|---|
| committer | Yiran Wang <yiran@google.com> | 2015-06-29 10:56:28 -0700 |
| commit | 1d9fec7937f45dde5e04cac966a2d9a12f2fc15a (patch) | |
| tree | 3fbcd18a379a05fd6d43491a107e1f36bc61b185 /gcc-4.9/gcc/testsuite/gcc.target/aarch64/pr62262.c | |
| parent | f378ebf14df0952eae870c9865bab8326aa8f137 (diff) | |
| download | toolchain_gcc-1d9fec7937f45dde5e04cac966a2d9a12f2fc15a.tar.gz toolchain_gcc-1d9fec7937f45dde5e04cac966a2d9a12f2fc15a.tar.bz2 toolchain_gcc-1d9fec7937f45dde5e04cac966a2d9a12f2fc15a.zip | |
Synchronize with google/gcc-4_9 to r224707 (from r214835)
Change-Id: I3d6f06fc613c8f8b6a82143dc44b7338483aac5d
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; +} |