[turbofan] Turn Math.clz32 into an inlinable builtin.

test/cctest/test-disasm-x64.cc

Index: test/cctest/test-disasm-x64.cc
diff --git a/test/cctest/test-disasm-x64.cc b/test/cctest/test-disasm-x64.cc
index 8986ba76a0d2a7df3289754f0f4517bdb61e7ade..0eb934829abefed1c411a935fb7109373e5df5c8 100644
--- a/test/cctest/test-disasm-x64.cc
+++ b/test/cctest/test-disasm-x64.cc
@@ -89,6 +89,9 @@ TEST(DisasmX64) {
   __ addq(rdi, Operand(rbp, rcx, times_4, -3999));
   __ addq(Operand(rbp, rcx, times_4, 12), Immediate(12));
 
+  __ bsrl(rax, r15);
+  __ bsrl(r9, Operand(rcx, times_8, 91919));
+
   __ nop();
   __ addq(rbx, Immediate(12));
   __ nop();