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-rw-r--r--test/CFrontend/2007-08-22-CTTZ.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/test/CFrontend/2007-08-22-CTTZ.c b/test/CFrontend/2007-08-22-CTTZ.c
new file mode 100644
index 0000000..8687a73
--- /dev/null
+++ b/test/CFrontend/2007-08-22-CTTZ.c
@@ -0,0 +1,6 @@
+// RUN: %llvmgcc -O2 -S -o - -emit-llvm %s | grep {llvm.cttz.i64} | count 1
+// RUN: %llvmgcc -O2 -S -o - -emit-llvm %s | not grep {lshr}
+
+int bork(unsigned long long x) {
+ return __builtin_ctzll(x);
+}