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Kernel and Embedded Linux
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// RUN: %clang_cc1 -emit-llvm %s -o - | FileCheck %s unsigned t2(unsigned X) { // CHECK: t2 // CHECK: llvm.ctlz.i32 return __builtin_clz(X); } int t1(int X) { // CHECK: t1 // CHECK: llvm.ctlz.i32 return __builtin_clz(X); }