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| author | Ben Cheng <bccheng@google.com> | 2014-03-25 22:37:19 -0700 |
|---|---|---|
| committer | Ben Cheng <bccheng@google.com> | 2014-03-25 22:37:19 -0700 |
| commit | 1bc5aee63eb72b341f506ad058502cd0361f0d10 (patch) | |
| tree | c607e8252f3405424ff15bc2d00aa38dadbb2518 /gcc-4.9/gcc/testsuite/gcc.target/i386/lzcnt-4.c | |
| parent | 283a0bf58fcf333c58a2a92c3ebbc41fb9eb1fdb (diff) | |
| download | toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.tar.gz toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.tar.bz2 toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.zip | |
Initial checkin of GCC 4.9.0 from trunk (r208799).
Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba
Diffstat (limited to 'gcc-4.9/gcc/testsuite/gcc.target/i386/lzcnt-4.c')
| -rw-r--r-- | gcc-4.9/gcc/testsuite/gcc.target/i386/lzcnt-4.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.target/i386/lzcnt-4.c b/gcc-4.9/gcc/testsuite/gcc.target/i386/lzcnt-4.c new file mode 100644 index 000000000..20653265b --- /dev/null +++ b/gcc-4.9/gcc/testsuite/gcc.target/i386/lzcnt-4.c @@ -0,0 +1,35 @@ +/* { dg-do run { target { lzcnt } } } */ +/* { dg-options "-O2 -mlzcnt -fno-inline" } */ + +#include <x86intrin.h> + +#include "lzcnt-check.h" + +int calc_lzcnt_u32 (int src) +{ + int i; + int res = 0; + + while ((res < 32) && (((src >> (31 - res)) & 1) == 0)) + ++res; + + return res; +} + +static void +lzcnt_test () +{ + unsigned i; + int src = 0xce7ace0; + int res, res_ref; + + for (i=0; i<5; ++i) { + src = src >> i; + + res_ref = calc_lzcnt_u32 (src); + res = __lzcnt32 (src); + + if (res != res_ref) + abort(); + } +} |