optimize ctlz and add cttz; fixes #797

1 files changed, 4 insertions, 0 deletions

diff --git a/tests/runner.py b/tests/runner.py
index 4e79f7e9..58a79a9c 100755
--- a/tests/runner.py
+++ b/tests/runner.py
@@ -1220,6 +1220,8 @@ m_divisor is 1091269979
           extern unsigned int llvm_bswap_i32(unsigned int x);
           extern int32_t llvm_ctlz_i32(int32_t x);
           extern int64_t llvm_ctlz_i64(int64_t x);
+          extern int32_t llvm_cttz_i32(int32_t x);
+          extern int64_t llvm_cttz_i64(int64_t x);
           extern int llvm_expect_i32(int x, int y);
         }
 
@@ -1235,6 +1237,7 @@ m_divisor is 1091269979
             printf("%x,%x,%x,%x\n", y&0xff, (y>>8)&0xff, (y>>16)&0xff, (y>>24)&0xff);
 
             printf("%d,%d\n", (int)llvm_ctlz_i64(((int64_t)1) << 40), llvm_ctlz_i32(1<<10));
+            printf("%d,%d\n", (int)llvm_cttz_i64(((int64_t)1) << 40), llvm_cttz_i32(1<<10));
 
             printf("%d\n", llvm_expect_i32(x % 27, 3));
 
@@ -1250,6 +1253,7 @@ c8,ef
 8a,15,de,c5
 c5,de,15,8a
 23,21
+40,10
 13
 72057594037927936
 ''')