1 // Check code generation 2 // RUN: %clang_cc1 -verify -triple x86_64-pc-linux-gnu -fopenmp -fopenmp-version=51 -emit-llvm %s -o - | FileCheck %s --check-prefix=IR 3 4 // Check same results after serialization round-trip 5 // RUN: %clang_cc1 -verify -triple x86_64-pc-linux-gnu -fopenmp -fopenmp-version=51 -emit-pch -o %t %s 6 // RUN: %clang_cc1 -verify -triple x86_64-pc-linux-gnu -fopenmp -fopenmp-version=51 -include-pch %t -emit-llvm %s -o - | FileCheck %s --check-prefix=IR 7 // expected-no-diagnostics 8 9 // The loop trip count used by #pragma omp for depends on code generated 10 // by #pragma omp file. Check that theses PreInits are emitted before 11 // the code generated by #pragma omp for. 12 13 #ifndef HEADER 14 #define HEADER 15 16 // placeholder for loop body code. 17 extern "C" void body(...) {} 18 19 20 // IR-LABEL: @func( 21 // IR-NEXT: [[ENTRY:.*]]: 22 // IR-NEXT: %[[START_ADDR:.+]] = alloca i32, align 4 23 // IR-NEXT: %[[END_ADDR:.+]] = alloca i32, align 4 24 // IR-NEXT: %[[STEP_ADDR:.+]] = alloca i32, align 4 25 // IR-NEXT: %[[DOTOMP_IV:.+]] = alloca i32, align 4 26 // IR-NEXT: %[[TMP:.+]] = alloca i32, align 4 27 // IR-NEXT: %[[I:.+]] = alloca i32, align 4 28 // IR-NEXT: %[[DOTCAPTURE_EXPR_:.+]] = alloca i32, align 4 29 // IR-NEXT: %[[DOTCAPTURE_EXPR_1:.+]] = alloca i32, align 4 30 // IR-NEXT: %[[DOTCAPTURE_EXPR_2:.+]] = alloca i32, align 4 31 // IR-NEXT: %[[DOTCAPTURE_EXPR_3:.+]] = alloca i32, align 4 32 // IR-NEXT: %[[DOTCAPTURE_EXPR_6:.+]] = alloca i32, align 4 33 // IR-NEXT: %[[DOTCAPTURE_EXPR_8:.+]] = alloca i32, align 4 34 // IR-NEXT: %[[DOTFLOOR_0_IV_I:.+]] = alloca i32, align 4 35 // IR-NEXT: %[[DOTOMP_LB:.+]] = alloca i32, align 4 36 // IR-NEXT: %[[DOTOMP_UB:.+]] = alloca i32, align 4 37 // IR-NEXT: %[[DOTOMP_STRIDE:.+]] = alloca i32, align 4 38 // IR-NEXT: %[[DOTOMP_IS_LAST:.+]] = alloca i32, align 4 39 // IR-NEXT: %[[DOTFLOOR_0_IV_I12:.+]] = alloca i32, align 4 40 // IR-NEXT: %[[DOTTILE_0_IV_I:.+]] = alloca i32, align 4 41 // IR-NEXT: %[[TMP0:.+]] = call i32 @__kmpc_global_thread_num(%struct.ident_t* @2) 42 // IR-NEXT: store i32 %[[START:.+]], i32* %[[START_ADDR]], align 4 43 // IR-NEXT: store i32 %[[END:.+]], i32* %[[END_ADDR]], align 4 44 // IR-NEXT: store i32 %[[STEP:.+]], i32* %[[STEP_ADDR]], align 4 45 // IR-NEXT: %[[TMP1:.+]] = load i32, i32* %[[START_ADDR]], align 4 46 // IR-NEXT: store i32 %[[TMP1]], i32* %[[I]], align 4 47 // IR-NEXT: %[[TMP2:.+]] = load i32, i32* %[[START_ADDR]], align 4 48 // IR-NEXT: store i32 %[[TMP2]], i32* %[[DOTCAPTURE_EXPR_]], align 4 49 // IR-NEXT: %[[TMP3:.+]] = load i32, i32* %[[END_ADDR]], align 4 50 // IR-NEXT: store i32 %[[TMP3]], i32* %[[DOTCAPTURE_EXPR_1]], align 4 51 // IR-NEXT: %[[TMP4:.+]] = load i32, i32* %[[STEP_ADDR]], align 4 52 // IR-NEXT: store i32 %[[TMP4]], i32* %[[DOTCAPTURE_EXPR_2]], align 4 53 // IR-NEXT: %[[TMP5:.+]] = load i32, i32* %[[DOTCAPTURE_EXPR_1]], align 4 54 // IR-NEXT: %[[TMP6:.+]] = load i32, i32* %[[DOTCAPTURE_EXPR_]], align 4 55 // IR-NEXT: %[[SUB:.+]] = sub i32 %[[TMP5]], %[[TMP6]] 56 // IR-NEXT: %[[SUB4:.+]] = sub i32 %[[SUB]], 1 57 // IR-NEXT: %[[TMP7:.+]] = load i32, i32* %[[DOTCAPTURE_EXPR_2]], align 4 58 // IR-NEXT: %[[ADD:.+]] = add i32 %[[SUB4]], %[[TMP7]] 59 // IR-NEXT: %[[TMP8:.+]] = load i32, i32* %[[DOTCAPTURE_EXPR_2]], align 4 60 // IR-NEXT: %[[DIV:.+]] = udiv i32 %[[ADD]], %[[TMP8]] 61 // IR-NEXT: %[[SUB5:.+]] = sub i32 %[[DIV]], 1 62 // IR-NEXT: store i32 %[[SUB5]], i32* %[[DOTCAPTURE_EXPR_3]], align 4 63 // IR-NEXT: %[[TMP9:.+]] = load i32, i32* %[[DOTCAPTURE_EXPR_3]], align 4 64 // IR-NEXT: %[[ADD7:.+]] = add i32 %[[TMP9]], 1 65 // IR-NEXT: store i32 %[[ADD7]], i32* %[[DOTCAPTURE_EXPR_6]], align 4 66 // IR-NEXT: %[[TMP10:.+]] = load i32, i32* %[[DOTCAPTURE_EXPR_6]], align 4 67 // IR-NEXT: %[[SUB9:.+]] = sub i32 %[[TMP10]], -3 68 // IR-NEXT: %[[DIV10:.+]] = udiv i32 %[[SUB9]], 4 69 // IR-NEXT: %[[SUB11:.+]] = sub i32 %[[DIV10]], 1 70 // IR-NEXT: store i32 %[[SUB11]], i32* %[[DOTCAPTURE_EXPR_8]], align 4 71 // IR-NEXT: store i32 0, i32* %[[DOTFLOOR_0_IV_I]], align 4 72 // IR-NEXT: %[[TMP11:.+]] = load i32, i32* %[[DOTCAPTURE_EXPR_6]], align 4 73 // IR-NEXT: %[[CMP:.+]] = icmp ult i32 0, %[[TMP11]] 74 // IR-NEXT: br i1 %[[CMP]], label %[[OMP_PRECOND_THEN:.+]], label %[[OMP_PRECOND_END:.+]] 75 // IR-EMPTY: 76 // IR-NEXT: [[OMP_PRECOND_THEN]]: 77 // IR-NEXT: store i32 0, i32* %[[DOTOMP_LB]], align 4 78 // IR-NEXT: %[[TMP12:.+]] = load i32, i32* %[[DOTCAPTURE_EXPR_8]], align 4 79 // IR-NEXT: store i32 %[[TMP12]], i32* %[[DOTOMP_UB]], align 4 80 // IR-NEXT: store i32 1, i32* %[[DOTOMP_STRIDE]], align 4 81 // IR-NEXT: store i32 0, i32* %[[DOTOMP_IS_LAST]], align 4 82 // IR-NEXT: call void @__kmpc_for_static_init_4u(%struct.ident_t* @1, i32 %[[TMP0]], i32 34, i32* %[[DOTOMP_IS_LAST]], i32* %[[DOTOMP_LB]], i32* %[[DOTOMP_UB]], i32* %[[DOTOMP_STRIDE]], i32 1, i32 1) 83 // IR-NEXT: %[[TMP13:.+]] = load i32, i32* %[[DOTOMP_UB]], align 4 84 // IR-NEXT: %[[TMP14:.+]] = load i32, i32* %[[DOTCAPTURE_EXPR_8]], align 4 85 // IR-NEXT: %[[CMP13:.+]] = icmp ugt i32 %[[TMP13]], %[[TMP14]] 86 // IR-NEXT: br i1 %[[CMP13]], label %[[COND_TRUE:.+]], label %[[COND_FALSE:.+]] 87 // IR-EMPTY: 88 // IR-NEXT: [[COND_TRUE]]: 89 // IR-NEXT: %[[TMP15:.+]] = load i32, i32* %[[DOTCAPTURE_EXPR_8]], align 4 90 // IR-NEXT: br label %[[COND_END:.+]] 91 // IR-EMPTY: 92 // IR-NEXT: [[COND_FALSE]]: 93 // IR-NEXT: %[[TMP16:.+]] = load i32, i32* %[[DOTOMP_UB]], align 4 94 // IR-NEXT: br label %[[COND_END]] 95 // IR-EMPTY: 96 // IR-NEXT: [[COND_END]]: 97 // IR-NEXT: %[[COND:.+]] = phi i32 [ %[[TMP15]], %[[COND_TRUE]] ], [ %[[TMP16]], %[[COND_FALSE]] ] 98 // IR-NEXT: store i32 %[[COND]], i32* %[[DOTOMP_UB]], align 4 99 // IR-NEXT: %[[TMP17:.+]] = load i32, i32* %[[DOTOMP_LB]], align 4 100 // IR-NEXT: store i32 %[[TMP17]], i32* %[[DOTOMP_IV]], align 4 101 // IR-NEXT: br label %[[OMP_INNER_FOR_COND:.+]] 102 // IR-EMPTY: 103 // IR-NEXT: [[OMP_INNER_FOR_COND]]: 104 // IR-NEXT: %[[TMP18:.+]] = load i32, i32* %[[DOTOMP_IV]], align 4 105 // IR-NEXT: %[[TMP19:.+]] = load i32, i32* %[[DOTOMP_UB]], align 4 106 // IR-NEXT: %[[ADD14:.+]] = add i32 %[[TMP19]], 1 107 // IR-NEXT: %[[CMP15:.+]] = icmp ult i32 %[[TMP18]], %[[ADD14]] 108 // IR-NEXT: br i1 %[[CMP15]], label %[[OMP_INNER_FOR_BODY:.+]], label %[[OMP_INNER_FOR_END:.+]] 109 // IR-EMPTY: 110 // IR-NEXT: [[OMP_INNER_FOR_BODY]]: 111 // IR-NEXT: %[[TMP20:.+]] = load i32, i32* %[[DOTOMP_IV]], align 4 112 // IR-NEXT: %[[MUL:.+]] = mul i32 %[[TMP20]], 4 113 // IR-NEXT: %[[ADD16:.+]] = add i32 0, %[[MUL]] 114 // IR-NEXT: store i32 %[[ADD16]], i32* %[[DOTFLOOR_0_IV_I12]], align 4 115 // IR-NEXT: %[[TMP21:.+]] = load i32, i32* %[[DOTFLOOR_0_IV_I12]], align 4 116 // IR-NEXT: store i32 %[[TMP21]], i32* %[[DOTTILE_0_IV_I]], align 4 117 // IR-NEXT: br label %[[FOR_COND:.+]] 118 // IR-EMPTY: 119 // IR-NEXT: [[FOR_COND]]: 120 // IR-NEXT: %[[TMP22:.+]] = load i32, i32* %[[DOTTILE_0_IV_I]], align 4 121 // IR-NEXT: %[[TMP23:.+]] = load i32, i32* %[[DOTCAPTURE_EXPR_3]], align 4 122 // IR-NEXT: %[[ADD17:.+]] = add i32 %[[TMP23]], 1 123 // IR-NEXT: %[[TMP24:.+]] = load i32, i32* %[[DOTFLOOR_0_IV_I12]], align 4 124 // IR-NEXT: %[[ADD18:.+]] = add nsw i32 %[[TMP24]], 4 125 // IR-NEXT: %[[CMP19:.+]] = icmp ult i32 %[[ADD17]], %[[ADD18]] 126 // IR-NEXT: br i1 %[[CMP19]], label %[[COND_TRUE20:.+]], label %[[COND_FALSE22:.+]] 127 // IR-EMPTY: 128 // IR-NEXT: [[COND_TRUE20]]: 129 // IR-NEXT: %[[TMP25:.+]] = load i32, i32* %[[DOTCAPTURE_EXPR_3]], align 4 130 // IR-NEXT: %[[ADD21:.+]] = add i32 %[[TMP25]], 1 131 // IR-NEXT: br label %[[COND_END24:.+]] 132 // IR-EMPTY: 133 // IR-NEXT: [[COND_FALSE22]]: 134 // IR-NEXT: %[[TMP26:.+]] = load i32, i32* %[[DOTFLOOR_0_IV_I12]], align 4 135 // IR-NEXT: %[[ADD23:.+]] = add nsw i32 %[[TMP26]], 4 136 // IR-NEXT: br label %[[COND_END24]] 137 // IR-EMPTY: 138 // IR-NEXT: [[COND_END24]]: 139 // IR-NEXT: %[[COND25:.+]] = phi i32 [ %[[ADD21]], %[[COND_TRUE20]] ], [ %[[ADD23]], %[[COND_FALSE22]] ] 140 // IR-NEXT: %[[CMP26:.+]] = icmp ult i32 %[[TMP22]], %[[COND25]] 141 // IR-NEXT: br i1 %[[CMP26]], label %[[FOR_BODY:.+]], label %[[FOR_END:.+]] 142 // IR-EMPTY: 143 // IR-NEXT: [[FOR_BODY]]: 144 // IR-NEXT: %[[TMP27:.+]] = load i32, i32* %[[DOTCAPTURE_EXPR_]], align 4 145 // IR-NEXT: %[[TMP28:.+]] = load i32, i32* %[[DOTTILE_0_IV_I]], align 4 146 // IR-NEXT: %[[TMP29:.+]] = load i32, i32* %[[DOTCAPTURE_EXPR_2]], align 4 147 // IR-NEXT: %[[MUL27:.+]] = mul i32 %[[TMP28]], %[[TMP29]] 148 // IR-NEXT: %[[ADD28:.+]] = add i32 %[[TMP27]], %[[MUL27]] 149 // IR-NEXT: store i32 %[[ADD28]], i32* %[[I]], align 4 150 // IR-NEXT: %[[TMP30:.+]] = load i32, i32* %[[START_ADDR]], align 4 151 // IR-NEXT: %[[TMP31:.+]] = load i32, i32* %[[END_ADDR]], align 4 152 // IR-NEXT: %[[TMP32:.+]] = load i32, i32* %[[STEP_ADDR]], align 4 153 // IR-NEXT: %[[TMP33:.+]] = load i32, i32* %[[I]], align 4 154 // IR-NEXT: call void (...) @body(i32 %[[TMP30]], i32 %[[TMP31]], i32 %[[TMP32]], i32 %[[TMP33]]) 155 // IR-NEXT: br label %[[FOR_INC:.+]] 156 // IR-EMPTY: 157 // IR-NEXT: [[FOR_INC]]: 158 // IR-NEXT: %[[TMP34:.+]] = load i32, i32* %[[DOTTILE_0_IV_I]], align 4 159 // IR-NEXT: %[[INC:.+]] = add nsw i32 %[[TMP34]], 1 160 // IR-NEXT: store i32 %[[INC]], i32* %[[DOTTILE_0_IV_I]], align 4 161 // IR-NEXT: br label %[[FOR_COND]], !llvm.loop ![[LOOP2:[0-9]+]] 162 // IR-EMPTY: 163 // IR-NEXT: [[FOR_END]]: 164 // IR-NEXT: br label %[[OMP_BODY_CONTINUE:.+]] 165 // IR-EMPTY: 166 // IR-NEXT: [[OMP_BODY_CONTINUE]]: 167 // IR-NEXT: br label %[[OMP_INNER_FOR_INC:.+]] 168 // IR-EMPTY: 169 // IR-NEXT: [[OMP_INNER_FOR_INC]]: 170 // IR-NEXT: %[[TMP35:.+]] = load i32, i32* %[[DOTOMP_IV]], align 4 171 // IR-NEXT: %[[ADD29:.+]] = add i32 %[[TMP35]], 1 172 // IR-NEXT: store i32 %[[ADD29]], i32* %[[DOTOMP_IV]], align 4 173 // IR-NEXT: br label %[[OMP_INNER_FOR_COND]] 174 // IR-EMPTY: 175 // IR-NEXT: [[OMP_INNER_FOR_END]]: 176 // IR-NEXT: br label %[[OMP_LOOP_EXIT:.+]] 177 // IR-EMPTY: 178 // IR-NEXT: [[OMP_LOOP_EXIT]]: 179 // IR-NEXT: call void @__kmpc_for_static_fini(%struct.ident_t* @1, i32 %[[TMP0]]) 180 // IR-NEXT: br label %[[OMP_PRECOND_END]] 181 // IR-EMPTY: 182 // IR-NEXT: [[OMP_PRECOND_END]]: 183 // IR-NEXT: call void @__kmpc_barrier(%struct.ident_t* @3, i32 %[[TMP0]]) 184 // IR-NEXT: ret void 185 // IR-NEXT: } 186 extern "C" void func(int start, int end, int step) { 187 #pragma omp for 188 #pragma omp tile sizes(4) 189 for (int i = start; i < end; i += step) 190 body(start, end, step, i); 191 } 192 193 #endif /* HEADER */ 194