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1; RUN: llc -verify-machineinstrs -O0 -mtriple=spirv64-unknown-unknown %s -o - | FileCheck %s2 3; CHECK: %[[#extinst_id:]] = OpExtInstImport "OpenCL.std"4 5; CHECK: OpFunction6; CHECK: %[[#]] = OpExtInst %[[#]] %[[#extinst_id]] clz7; CHECK: OpFunctionEnd8 9define spir_func i32 @TestClz(i32 %x) local_unnamed_addr {10entry:11 %0 = tail call i32 @llvm.ctlz.i32(i32 %x, i1 true)12 ret i32 %013}14 15declare i32 @llvm.ctlz.i32(i32, i1 immarg)16