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1; RUN: llc -O0 -mtriple=spirv64-unknown-linux %s -o - | FileCheck %s --check-prefix=CHECK-SPIRV2; RUN: %if spirv-tools %{ llc -O0 -mtriple=spirv64-unknown-unknown %s -o - -filetype=obj | spirv-val %}3 4;; The IR was generated from the following source:5;; #include <CL/sycl.hpp>6;;7;; template <typename T, int N>8;; class sycl_subgr;9;;10;; using namespace cl::sycl;11;;12;; int main() {13;; queue Queue;14;; int X = 8;15;; nd_range<1> NdRange(X, X);16;; buffer<int> buf(X);17;; Queue.submit([&](handler &cgh) {18;; auto acc = buf.template get_access<access::mode::read_write>(cgh);19;; cgh.parallel_for<sycl_subgr<int, 0>>(NdRange, [=](nd_item<1> NdItem) {20;; intel::sub_group SG = NdItem.get_sub_group();21;; if (X % 2) {22;; acc[0] = SG.get_max_local_range()[0];23;; }24;; acc[1] = (X % 3) ? 1 : SG.get_max_local_range()[0];25;; });26;; });27;; return 0;28;; }29;; Command line:30;; clang -fsycl -fsycl-device-only -Xclang -fsycl-enable-optimizations tmp.cpp -o tmp.bc31;; llvm-spirv tmp.bc -s -o builtin_vars_opt.ll32 33; CHECK-SPIRV-DAG: OpDecorate %[[#SG_MaxSize_BI:]] BuiltIn SubgroupMaxSize34; CHECK-SPIRV-DAG: OpDecorate %[[#SG_MaxSize_BI:]] Constant35; CHECK-SPIRV-DAG: OpDecorate %[[#SG_MaxSize_BI:]] LinkageAttributes "__spirv_BuiltInSubgroupMaxSize" Import36 37%"class._ZTSN2cl4sycl5rangeILi1EEE.cl::sycl::range" = type { %"class._ZTSN2cl4sycl6detail5arrayILi1EEE.cl::sycl::detail::array" }38%"class._ZTSN2cl4sycl6detail5arrayILi1EEE.cl::sycl::detail::array" = type { [1 x i64] }39%"class._ZTSN2cl4sycl2idILi1EEE.cl::sycl::id" = type { %"class._ZTSN2cl4sycl6detail5arrayILi1EEE.cl::sycl::detail::array" }40 41$_ZTS10sycl_subgrIiLi0EE = comdat any42 43@__spirv_BuiltInSubgroupMaxSize = external dso_local local_unnamed_addr addrspace(1) constant i32, align 444 45 46define weak_odr dso_local spir_kernel void @_ZTS10sycl_subgrIiLi0EE(i32 %_arg_, i32 addrspace(1)* %_arg_1, %"class._ZTSN2cl4sycl5rangeILi1EEE.cl::sycl::range"* byval(%"class._ZTSN2cl4sycl5rangeILi1EEE.cl::sycl::range") align 8 %_arg_3, %"class._ZTSN2cl4sycl5rangeILi1EEE.cl::sycl::range"* byval(%"class._ZTSN2cl4sycl5rangeILi1EEE.cl::sycl::range") align 8 %_arg_4, %"class._ZTSN2cl4sycl2idILi1EEE.cl::sycl::id"* byval(%"class._ZTSN2cl4sycl2idILi1EEE.cl::sycl::id") align 8 %_arg_5) local_unnamed_addr comdat {47entry:48 %0 = getelementptr inbounds %"class._ZTSN2cl4sycl2idILi1EEE.cl::sycl::id", %"class._ZTSN2cl4sycl2idILi1EEE.cl::sycl::id"* %_arg_5, i64 0, i32 0, i32 0, i64 049 %1 = load i64, i64* %0, align 850 %add.ptr.i = getelementptr inbounds i32, i32 addrspace(1)* %_arg_1, i64 %151 %2 = and i32 %_arg_, 152 %tobool.not.i = icmp eq i32 %2, 053 %3 = addrspacecast i32 addrspace(1)* @__spirv_BuiltInSubgroupMaxSize to i32 addrspace(4)*54 br i1 %tobool.not.i, label %if.end.i, label %if.then.i55 56if.then.i: ; preds = %entry57 %4 = load i32, i32 addrspace(4)* %3, align 458 %ptridx.ascast.i14.i = addrspacecast i32 addrspace(1)* %add.ptr.i to i32 addrspace(4)*59 store i32 %4, i32 addrspace(4)* %ptridx.ascast.i14.i, align 460 br label %if.end.i61 62if.end.i: ; preds = %if.then.i, %entry63 %rem3.i = srem i32 %_arg_, 364 %tobool4.not.i = icmp eq i32 %rem3.i, 065 br i1 %tobool4.not.i, label %cond.false.i, label %"_ZZZ4mainENK3$_0clERN2cl4sycl7handlerEENKUlNS1_7nd_itemILi1EEEE_clES5_.exit"66 67cond.false.i: ; preds = %if.end.i68 %5 = load i32, i32 addrspace(4)* %3, align 469 br label %"_ZZZ4mainENK3$_0clERN2cl4sycl7handlerEENKUlNS1_7nd_itemILi1EEEE_clES5_.exit"70 71"_ZZZ4mainENK3$_0clERN2cl4sycl7handlerEENKUlNS1_7nd_itemILi1EEEE_clES5_.exit": ; preds = %cond.false.i, %if.end.i72 %cond.i = phi i32 [ %5, %cond.false.i ], [ 1, %if.end.i ]73 %ptridx.i.i = getelementptr inbounds i32, i32 addrspace(1)* %add.ptr.i, i64 174 %ptridx.ascast.i.i = addrspacecast i32 addrspace(1)* %ptridx.i.i to i32 addrspace(4)*75 store i32 %cond.i, i32 addrspace(4)* %ptridx.ascast.i.i, align 476 ret void77}78