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 #ifndef HEADER 10 #define HEADER 11 12 // placeholder for loop body code. 13 extern "C" void body(...) {} 14 15 16 // IR-LABEL: @func( 17 // IR-NEXT: [[ENTRY:.*]]: 18 // IR-NEXT: %[[START_ADDR:.+]] = alloca i32, align 4 19 // IR-NEXT: %[[END_ADDR:.+]] = alloca i32, align 4 20 // IR-NEXT: %[[STEP_ADDR:.+]] = alloca i32, align 4 21 // IR-NEXT: %[[DOTOMP_IV:.+]] = alloca i32, align 4 22 // IR-NEXT: %[[TMP:.+]] = alloca i32, align 4 23 // IR-NEXT: %[[I:.+]] = alloca i32, align 4 24 // IR-NEXT: %[[DOTCAPTURE_EXPR_:.+]] = alloca i32, align 4 25 // IR-NEXT: %[[DOTCAPTURE_EXPR_1:.+]] = alloca i32, align 4 26 // IR-NEXT: %[[DOTCAPTURE_EXPR_2:.+]] = alloca i32, align 4 27 // IR-NEXT: %[[DOTCAPTURE_EXPR_3:.+]] = alloca i32, align 4 28 // IR-NEXT: %[[DOTUNROLLED_IV_I:.+]] = alloca i32, align 4 29 // IR-NEXT: %[[DOTCAPTURE_EXPR_6:.+]] = alloca i32, align 4 30 // IR-NEXT: %[[DOTCAPTURE_EXPR_8:.+]] = alloca i32, align 4 31 // IR-NEXT: %[[DOTCAPTURE_EXPR_12:.+]] = alloca i32, align 4 32 // IR-NEXT: %[[DOTCAPTURE_EXPR_14:.+]] = alloca i32, align 4 33 // IR-NEXT: %[[DOTFLOOR_0_IV__UNROLLED_IV_I:.+]] = alloca i32, align 4 34 // IR-NEXT: %[[DOTOMP_LB:.+]] = alloca i32, align 4 35 // IR-NEXT: %[[DOTOMP_UB:.+]] = alloca i32, align 4 36 // IR-NEXT: %[[DOTOMP_STRIDE:.+]] = alloca i32, align 4 37 // IR-NEXT: %[[DOTOMP_IS_LAST:.+]] = alloca i32, align 4 38 // IR-NEXT: %[[DOTFLOOR_0_IV__UNROLLED_IV_I18:.+]] = alloca i32, align 4 39 // IR-NEXT: %[[DOTTILE_0_IV__UNROLLED_IV_I:.+]] = alloca i32, align 4 40 // IR-NEXT: %[[DOTUNROLL_INNER_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: store i32 0, i32* %[[DOTUNROLLED_IV_I]], align 4 64 // IR-NEXT: %[[TMP9:.+]] = load i32, i32* %[[DOTCAPTURE_EXPR_3]], align 4 65 // IR-NEXT: %[[ADD7:.+]] = add i32 %[[TMP9]], 1 66 // IR-NEXT: store i32 %[[ADD7]], i32* %[[DOTCAPTURE_EXPR_6]], align 4 67 // IR-NEXT: %[[TMP10:.+]] = load i32, i32* %[[DOTCAPTURE_EXPR_6]], align 4 68 // IR-NEXT: %[[SUB9:.+]] = sub i32 %[[TMP10]], -1 69 // IR-NEXT: %[[DIV10:.+]] = udiv i32 %[[SUB9]], 2 70 // IR-NEXT: %[[SUB11:.+]] = sub i32 %[[DIV10]], 1 71 // IR-NEXT: store i32 %[[SUB11]], i32* %[[DOTCAPTURE_EXPR_8]], align 4 72 // IR-NEXT: %[[TMP11:.+]] = load i32, i32* %[[DOTCAPTURE_EXPR_8]], align 4 73 // IR-NEXT: %[[ADD13:.+]] = add i32 %[[TMP11]], 1 74 // IR-NEXT: store i32 %[[ADD13]], i32* %[[DOTCAPTURE_EXPR_12]], align 4 75 // IR-NEXT: %[[TMP12:.+]] = load i32, i32* %[[DOTCAPTURE_EXPR_12]], align 4 76 // IR-NEXT: %[[SUB15:.+]] = sub i32 %[[TMP12]], -3 77 // IR-NEXT: %[[DIV16:.+]] = udiv i32 %[[SUB15]], 4 78 // IR-NEXT: %[[SUB17:.+]] = sub i32 %[[DIV16]], 1 79 // IR-NEXT: store i32 %[[SUB17]], i32* %[[DOTCAPTURE_EXPR_14]], align 4 80 // IR-NEXT: store i32 0, i32* %[[DOTFLOOR_0_IV__UNROLLED_IV_I]], align 4 81 // IR-NEXT: %[[TMP13:.+]] = load i32, i32* %[[DOTCAPTURE_EXPR_12]], align 4 82 // IR-NEXT: %[[CMP:.+]] = icmp ult i32 0, %[[TMP13]] 83 // IR-NEXT: br i1 %[[CMP]], label %[[OMP_PRECOND_THEN:.+]], label %[[OMP_PRECOND_END:.+]] 84 // IR-EMPTY: 85 // IR-NEXT: [[OMP_PRECOND_THEN]]: 86 // IR-NEXT: store i32 0, i32* %[[DOTOMP_LB]], align 4 87 // IR-NEXT: %[[TMP14:.+]] = load i32, i32* %[[DOTCAPTURE_EXPR_14]], align 4 88 // IR-NEXT: store i32 %[[TMP14]], i32* %[[DOTOMP_UB]], align 4 89 // IR-NEXT: store i32 1, i32* %[[DOTOMP_STRIDE]], align 4 90 // IR-NEXT: store i32 0, i32* %[[DOTOMP_IS_LAST]], align 4 91 // 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) 92 // IR-NEXT: %[[TMP15:.+]] = load i32, i32* %[[DOTOMP_UB]], align 4 93 // IR-NEXT: %[[TMP16:.+]] = load i32, i32* %[[DOTCAPTURE_EXPR_14]], align 4 94 // IR-NEXT: %[[CMP19:.+]] = icmp ugt i32 %[[TMP15]], %[[TMP16]] 95 // IR-NEXT: br i1 %[[CMP19]], label %[[COND_TRUE:.+]], label %[[COND_FALSE:.+]] 96 // IR-EMPTY: 97 // IR-NEXT: [[COND_TRUE]]: 98 // IR-NEXT: %[[TMP17:.+]] = load i32, i32* %[[DOTCAPTURE_EXPR_14]], align 4 99 // IR-NEXT: br label %[[COND_END:.+]] 100 // IR-EMPTY: 101 // IR-NEXT: [[COND_FALSE]]: 102 // IR-NEXT: %[[TMP18:.+]] = load i32, i32* %[[DOTOMP_UB]], align 4 103 // IR-NEXT: br label %[[COND_END]] 104 // IR-EMPTY: 105 // IR-NEXT: [[COND_END]]: 106 // IR-NEXT: %[[COND:.+]] = phi i32 [ %[[TMP17]], %[[COND_TRUE]] ], [ %[[TMP18]], %[[COND_FALSE]] ] 107 // IR-NEXT: store i32 %[[COND]], i32* %[[DOTOMP_UB]], align 4 108 // IR-NEXT: %[[TMP19:.+]] = load i32, i32* %[[DOTOMP_LB]], align 4 109 // IR-NEXT: store i32 %[[TMP19]], i32* %[[DOTOMP_IV]], align 4 110 // IR-NEXT: br label %[[OMP_INNER_FOR_COND:.+]] 111 // IR-EMPTY: 112 // IR-NEXT: [[OMP_INNER_FOR_COND]]: 113 // IR-NEXT: %[[TMP20:.+]] = load i32, i32* %[[DOTOMP_IV]], align 4 114 // IR-NEXT: %[[TMP21:.+]] = load i32, i32* %[[DOTOMP_UB]], align 4 115 // IR-NEXT: %[[ADD20:.+]] = add i32 %[[TMP21]], 1 116 // IR-NEXT: %[[CMP21:.+]] = icmp ult i32 %[[TMP20]], %[[ADD20]] 117 // IR-NEXT: br i1 %[[CMP21]], label %[[OMP_INNER_FOR_BODY:.+]], label %[[OMP_INNER_FOR_END:.+]] 118 // IR-EMPTY: 119 // IR-NEXT: [[OMP_INNER_FOR_BODY]]: 120 // IR-NEXT: %[[TMP22:.+]] = load i32, i32* %[[DOTOMP_IV]], align 4 121 // IR-NEXT: %[[MUL:.+]] = mul i32 %[[TMP22]], 4 122 // IR-NEXT: %[[ADD22:.+]] = add i32 0, %[[MUL]] 123 // IR-NEXT: store i32 %[[ADD22]], i32* %[[DOTFLOOR_0_IV__UNROLLED_IV_I18]], align 4 124 // IR-NEXT: %[[TMP23:.+]] = load i32, i32* %[[DOTFLOOR_0_IV__UNROLLED_IV_I18]], align 4 125 // IR-NEXT: store i32 %[[TMP23]], i32* %[[DOTTILE_0_IV__UNROLLED_IV_I]], align 4 126 // IR-NEXT: br label %[[FOR_COND:.+]] 127 // IR-EMPTY: 128 // IR-NEXT: [[FOR_COND]]: 129 // IR-NEXT: %[[TMP24:.+]] = load i32, i32* %[[DOTTILE_0_IV__UNROLLED_IV_I]], align 4 130 // IR-NEXT: %[[TMP25:.+]] = load i32, i32* %[[DOTCAPTURE_EXPR_8]], align 4 131 // IR-NEXT: %[[ADD23:.+]] = add i32 %[[TMP25]], 1 132 // IR-NEXT: %[[TMP26:.+]] = load i32, i32* %[[DOTFLOOR_0_IV__UNROLLED_IV_I18]], align 4 133 // IR-NEXT: %[[ADD24:.+]] = add i32 %[[TMP26]], 4 134 // IR-NEXT: %[[CMP25:.+]] = icmp ult i32 %[[ADD23]], %[[ADD24]] 135 // IR-NEXT: br i1 %[[CMP25]], label %[[COND_TRUE26:.+]], label %[[COND_FALSE28:.+]] 136 // IR-EMPTY: 137 // IR-NEXT: [[COND_TRUE26]]: 138 // IR-NEXT: %[[TMP27:.+]] = load i32, i32* %[[DOTCAPTURE_EXPR_8]], align 4 139 // IR-NEXT: %[[ADD27:.+]] = add i32 %[[TMP27]], 1 140 // IR-NEXT: br label %[[COND_END30:.+]] 141 // IR-EMPTY: 142 // IR-NEXT: [[COND_FALSE28]]: 143 // IR-NEXT: %[[TMP28:.+]] = load i32, i32* %[[DOTFLOOR_0_IV__UNROLLED_IV_I18]], align 4 144 // IR-NEXT: %[[ADD29:.+]] = add i32 %[[TMP28]], 4 145 // IR-NEXT: br label %[[COND_END30]] 146 // IR-EMPTY: 147 // IR-NEXT: [[COND_END30]]: 148 // IR-NEXT: %[[COND31:.+]] = phi i32 [ %[[ADD27]], %[[COND_TRUE26]] ], [ %[[ADD29]], %[[COND_FALSE28]] ] 149 // IR-NEXT: %[[CMP32:.+]] = icmp ult i32 %[[TMP24]], %[[COND31]] 150 // IR-NEXT: br i1 %[[CMP32]], label %[[FOR_BODY:.+]], label %[[FOR_END45:.+]] 151 // IR-EMPTY: 152 // IR-NEXT: [[FOR_BODY]]: 153 // IR-NEXT: %[[TMP29:.+]] = load i32, i32* %[[DOTTILE_0_IV__UNROLLED_IV_I]], align 4 154 // IR-NEXT: %[[MUL33:.+]] = mul i32 %[[TMP29]], 2 155 // IR-NEXT: %[[ADD34:.+]] = add i32 0, %[[MUL33]] 156 // IR-NEXT: store i32 %[[ADD34]], i32* %[[DOTUNROLLED_IV_I]], align 4 157 // IR-NEXT: %[[TMP30:.+]] = load i32, i32* %[[DOTUNROLLED_IV_I]], align 4 158 // IR-NEXT: store i32 %[[TMP30]], i32* %[[DOTUNROLL_INNER_IV_I]], align 4 159 // IR-NEXT: br label %[[FOR_COND35:.+]] 160 // IR-EMPTY: 161 // IR-NEXT: [[FOR_COND35]]: 162 // IR-NEXT: %[[TMP31:.+]] = load i32, i32* %[[DOTUNROLL_INNER_IV_I]], align 4 163 // IR-NEXT: %[[TMP32:.+]] = load i32, i32* %[[DOTUNROLLED_IV_I]], align 4 164 // IR-NEXT: %[[ADD36:.+]] = add i32 %[[TMP32]], 2 165 // IR-NEXT: %[[CMP37:.+]] = icmp ule i32 %[[TMP31]], %[[ADD36]] 166 // IR-NEXT: br i1 %[[CMP37]], label %[[LAND_RHS:.+]], label %[[LAND_END:.+]] 167 // IR-EMPTY: 168 // IR-NEXT: [[LAND_RHS]]: 169 // IR-NEXT: %[[TMP33:.+]] = load i32, i32* %[[DOTUNROLL_INNER_IV_I]], align 4 170 // IR-NEXT: %[[TMP34:.+]] = load i32, i32* %[[DOTCAPTURE_EXPR_3]], align 4 171 // IR-NEXT: %[[ADD38:.+]] = add i32 %[[TMP34]], 1 172 // IR-NEXT: %[[CMP39:.+]] = icmp ule i32 %[[TMP33]], %[[ADD38]] 173 // IR-NEXT: br label %[[LAND_END]] 174 // IR-EMPTY: 175 // IR-NEXT: [[LAND_END]]: 176 // IR-NEXT: %[[TMP35:.+]] = phi i1 [ false, %[[FOR_COND35]] ], [ %[[CMP39]], %[[LAND_RHS]] ] 177 // IR-NEXT: br i1 %[[TMP35]], label %[[FOR_BODY40:.+]], label %[[FOR_END:.+]] 178 // IR-EMPTY: 179 // IR-NEXT: [[FOR_BODY40]]: 180 // IR-NEXT: %[[TMP36:.+]] = load i32, i32* %[[DOTCAPTURE_EXPR_]], align 4 181 // IR-NEXT: %[[TMP37:.+]] = load i32, i32* %[[DOTUNROLL_INNER_IV_I]], align 4 182 // IR-NEXT: %[[TMP38:.+]] = load i32, i32* %[[DOTCAPTURE_EXPR_2]], align 4 183 // IR-NEXT: %[[MUL41:.+]] = mul i32 %[[TMP37]], %[[TMP38]] 184 // IR-NEXT: %[[ADD42:.+]] = add i32 %[[TMP36]], %[[MUL41]] 185 // IR-NEXT: store i32 %[[ADD42]], i32* %[[I]], align 4 186 // IR-NEXT: %[[TMP39:.+]] = load i32, i32* %[[START_ADDR]], align 4 187 // IR-NEXT: %[[TMP40:.+]] = load i32, i32* %[[END_ADDR]], align 4 188 // IR-NEXT: %[[TMP41:.+]] = load i32, i32* %[[STEP_ADDR]], align 4 189 // IR-NEXT: %[[TMP42:.+]] = load i32, i32* %[[I]], align 4 190 // IR-NEXT: call void (...) @body(i32 %[[TMP39]], i32 %[[TMP40]], i32 %[[TMP41]], i32 %[[TMP42]]) 191 // IR-NEXT: br label %[[FOR_INC:.+]] 192 // IR-EMPTY: 193 // IR-NEXT: [[FOR_INC]]: 194 // IR-NEXT: %[[TMP43:.+]] = load i32, i32* %[[DOTUNROLL_INNER_IV_I]], align 4 195 // IR-NEXT: %[[INC:.+]] = add i32 %[[TMP43]], 1 196 // IR-NEXT: store i32 %[[INC]], i32* %[[DOTUNROLL_INNER_IV_I]], align 4 197 // IR-NEXT: br label %[[FOR_COND35]], !llvm.loop ![[LOOP2:[0-9]+]] 198 // IR-EMPTY: 199 // IR-NEXT: [[FOR_END]]: 200 // IR-NEXT: br label %[[FOR_INC43:.+]] 201 // IR-EMPTY: 202 // IR-NEXT: [[FOR_INC43]]: 203 // IR-NEXT: %[[TMP44:.+]] = load i32, i32* %[[DOTTILE_0_IV__UNROLLED_IV_I]], align 4 204 // IR-NEXT: %[[INC44:.+]] = add i32 %[[TMP44]], 1 205 // IR-NEXT: store i32 %[[INC44]], i32* %[[DOTTILE_0_IV__UNROLLED_IV_I]], align 4 206 // IR-NEXT: br label %[[FOR_COND]], !llvm.loop ![[LOOP5:[0-9]+]] 207 // IR-EMPTY: 208 // IR-NEXT: [[FOR_END45]]: 209 // IR-NEXT: br label %[[OMP_BODY_CONTINUE:.+]] 210 // IR-EMPTY: 211 // IR-NEXT: [[OMP_BODY_CONTINUE]]: 212 // IR-NEXT: br label %[[OMP_INNER_FOR_INC:.+]] 213 // IR-EMPTY: 214 // IR-NEXT: [[OMP_INNER_FOR_INC]]: 215 // IR-NEXT: %[[TMP45:.+]] = load i32, i32* %[[DOTOMP_IV]], align 4 216 // IR-NEXT: %[[ADD46:.+]] = add i32 %[[TMP45]], 1 217 // IR-NEXT: store i32 %[[ADD46]], i32* %[[DOTOMP_IV]], align 4 218 // IR-NEXT: br label %[[OMP_INNER_FOR_COND]] 219 // IR-EMPTY: 220 // IR-NEXT: [[OMP_INNER_FOR_END]]: 221 // IR-NEXT: br label %[[OMP_LOOP_EXIT:.+]] 222 // IR-EMPTY: 223 // IR-NEXT: [[OMP_LOOP_EXIT]]: 224 // IR-NEXT: call void @__kmpc_for_static_fini(%struct.ident_t* @1, i32 %[[TMP0]]) 225 // IR-NEXT: br label %[[OMP_PRECOND_END]] 226 // IR-EMPTY: 227 // IR-NEXT: [[OMP_PRECOND_END]]: 228 // IR-NEXT: call void @__kmpc_barrier(%struct.ident_t* @3, i32 %[[TMP0]]) 229 // IR-NEXT: ret void 230 // IR-NEXT: } 231 extern "C" void func(int start, int end, int step) { 232 #pragma omp for 233 #pragma omp tile sizes(4) 234 #pragma omp unroll partial 235 for (int i = start; i < end; i+=step) 236 body(start, end, step, i); 237 } 238 239 #endif /* HEADER */ 240 241 242 // IR: ![[LOOP2]] = distinct !{![[LOOP2]], ![[LOOPPROP3:[0-9]+]], ![[LOOPPROP4:[0-9]+]]} 243 // IR: ![[LOOPPROP3]] = !{!"llvm.loop.mustprogress"} 244 // IR: ![[LOOPPROP4]] = !{!"llvm.loop.unroll.count", i32 2} 245 // IR: ![[LOOP5]] = distinct !{![[LOOP5]], ![[LOOPPROP3]]} 246