clang/test/OpenMP/unroll_codegen_for_collapse_outer.cpp

   1 // Check code generation
   2 // RUN: %clang_cc1 -verify -triple x86_64-pc-linux-gnu -fopenmp -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 -emit-pch -o %t %s
   6 // RUN: %clang_cc1 -verify -triple x86_64-pc-linux-gnu -fopenmp -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 i64, align 8
  22 // IR-NEXT:    %[[TMP:.+]] = alloca i32, align 4
  23 // IR-NEXT:    %[[TMP1:.+]] = alloca i32, align 4
  24 // IR-NEXT:    %[[DOTCAPTURE_EXPR_:.+]] = alloca i32, align 4
  25 // IR-NEXT:    %[[DOTCAPTURE_EXPR_2:.+]] = alloca i32, align 4
  26 // IR-NEXT:    %[[DOTCAPTURE_EXPR_3:.+]] = alloca i32, align 4
  27 // IR-NEXT:    %[[J:.+]] = alloca i32, align 4
  28 // IR-NEXT:    %[[DOTCAPTURE_EXPR_4:.+]] = alloca i32, align 4
  29 // IR-NEXT:    %[[DOTCAPTURE_EXPR_5:.+]] = alloca i32, align 4
  30 // IR-NEXT:    %[[DOTCAPTURE_EXPR_6:.+]] = alloca i32, align 4
  31 // IR-NEXT:    %[[DOTCAPTURE_EXPR_7:.+]] = alloca i32, align 4
  32 // IR-NEXT:    %[[DOTCAPTURE_EXPR_10:.+]] = alloca i32, align 4
  33 // IR-NEXT:    %[[DOTCAPTURE_EXPR_12:.+]] = alloca i64, align 8
  34 // IR-NEXT:    %[[I:.+]] = alloca i32, align 4
  35 // IR-NEXT:    %[[DOTUNROLLED_IV_J:.+]] = alloca i32, align 4
  36 // IR-NEXT:    %[[DOTOMP_LB:.+]] = alloca i64, align 8
  37 // IR-NEXT:    %[[DOTOMP_UB:.+]] = alloca i64, align 8
  38 // IR-NEXT:    %[[DOTOMP_STRIDE:.+]] = alloca i64, align 8
  39 // IR-NEXT:    %[[DOTOMP_IS_LAST:.+]] = alloca i32, align 4
  40 // IR-NEXT:    %[[I22:.+]] = alloca i32, align 4
  41 // IR-NEXT:    %[[DOTUNROLLED_IV_J23:.+]] = alloca i32, align 4
  42 // IR-NEXT:    %[[DOTUNROLL_INNER_IV_J:.+]] = alloca i32, align 4
  43 // IR-NEXT:    %[[TMP0:.+]] = call i32 @__kmpc_global_thread_num(ptr @2)
  44 // IR-NEXT:    store i32 %[[START:.+]], ptr %[[START_ADDR]], align 4
  45 // IR-NEXT:    store i32 %[[END:.+]], ptr %[[END_ADDR]], align 4
  46 // IR-NEXT:    store i32 %[[STEP:.+]], ptr %[[STEP_ADDR]], align 4
  47 // IR-NEXT:    %[[TMP1_1:.+]] = load i32, ptr %[[START_ADDR]], align 4
  48 // IR-NEXT:    store i32 %[[TMP1_1]], ptr %[[DOTCAPTURE_EXPR_]], align 4
  49 // IR-NEXT:    %[[TMP2:.+]] = load i32, ptr %[[END_ADDR]], align 4
  50 // IR-NEXT:    store i32 %[[TMP2]], ptr %[[DOTCAPTURE_EXPR_2]], align 4
  51 // IR-NEXT:    %[[TMP3:.+]] = load i32, ptr %[[STEP_ADDR]], align 4
  52 // IR-NEXT:    store i32 %[[TMP3]], ptr %[[DOTCAPTURE_EXPR_3]], align 4
  53 // IR-NEXT:    %[[TMP4:.+]] = load i32, ptr %[[START_ADDR]], align 4
  54 // IR-NEXT:    store i32 %[[TMP4]], ptr %[[J]], align 4
  55 // IR-NEXT:    %[[TMP5:.+]] = load i32, ptr %[[START_ADDR]], align 4
  56 // IR-NEXT:    store i32 %[[TMP5]], ptr %[[DOTCAPTURE_EXPR_4]], align 4
  57 // IR-NEXT:    %[[TMP6:.+]] = load i32, ptr %[[END_ADDR]], align 4
  58 // IR-NEXT:    store i32 %[[TMP6]], ptr %[[DOTCAPTURE_EXPR_5]], align 4
  59 // IR-NEXT:    %[[TMP7:.+]] = load i32, ptr %[[STEP_ADDR]], align 4
  60 // IR-NEXT:    store i32 %[[TMP7]], ptr %[[DOTCAPTURE_EXPR_6]], align 4
  61 // IR-NEXT:    %[[TMP8:.+]] = load i32, ptr %[[DOTCAPTURE_EXPR_5]], align 4
  62 // IR-NEXT:    %[[TMP9:.+]] = load i32, ptr %[[DOTCAPTURE_EXPR_4]], align 4
  63 // IR-NEXT:    %[[SUB:.+]] = sub i32 %[[TMP8]], %[[TMP9]]
  64 // IR-NEXT:    %[[SUB8:.+]] = sub i32 %[[SUB]], 1
  65 // IR-NEXT:    %[[TMP10:.+]] = load i32, ptr %[[DOTCAPTURE_EXPR_6]], align 4
  66 // IR-NEXT:    %[[ADD:.+]] = add i32 %[[SUB8]], %[[TMP10]]
  67 // IR-NEXT:    %[[TMP11:.+]] = load i32, ptr %[[DOTCAPTURE_EXPR_6]], align 4
  68 // IR-NEXT:    %[[DIV:.+]] = udiv i32 %[[ADD]], %[[TMP11]]
  69 // IR-NEXT:    %[[SUB9:.+]] = sub i32 %[[DIV]], 1
  70 // IR-NEXT:    store i32 %[[SUB9]], ptr %[[DOTCAPTURE_EXPR_7]], align 4
  71 // IR-NEXT:    %[[TMP12:.+]] = load i32, ptr %[[DOTCAPTURE_EXPR_7]], align 4
  72 // IR-NEXT:    %[[ADD11:.+]] = add i32 %[[TMP12]], 1
  73 // IR-NEXT:    store i32 %[[ADD11]], ptr %[[DOTCAPTURE_EXPR_10]], align 4
  74 // IR-NEXT:    %[[TMP13:.+]] = load i32, ptr %[[DOTCAPTURE_EXPR_2]], align 4
  75 // IR-NEXT:    %[[TMP14:.+]] = load i32, ptr %[[DOTCAPTURE_EXPR_]], align 4
  76 // IR-NEXT:    %[[SUB13:.+]] = sub i32 %[[TMP13]], %[[TMP14]]
  77 // IR-NEXT:    %[[SUB14:.+]] = sub i32 %[[SUB13]], 1
  78 // IR-NEXT:    %[[TMP15:.+]] = load i32, ptr %[[DOTCAPTURE_EXPR_3]], align 4
  79 // IR-NEXT:    %[[ADD15:.+]] = add i32 %[[SUB14]], %[[TMP15]]
  80 // IR-NEXT:    %[[TMP16:.+]] = load i32, ptr %[[DOTCAPTURE_EXPR_3]], align 4
  81 // IR-NEXT:    %[[DIV16:.+]] = udiv i32 %[[ADD15]], %[[TMP16]]
  82 // IR-NEXT:    %[[CONV:.+]] = zext i32 %[[DIV16]] to i64
  83 // IR-NEXT:    %[[TMP17:.+]] = load i32, ptr %[[DOTCAPTURE_EXPR_10]], align 4
  84 // IR-NEXT:    %[[SUB17:.+]] = sub i32 %[[TMP17]], -1
  85 // IR-NEXT:    %[[DIV18:.+]] = udiv i32 %[[SUB17]], 2
  86 // IR-NEXT:    %[[CONV19:.+]] = zext i32 %[[DIV18]] to i64
  87 // IR-NEXT:    %[[MUL:.+]] = mul nsw i64 %[[CONV]], %[[CONV19]]
  88 // IR-NEXT:    %[[SUB20:.+]] = sub nsw i64 %[[MUL]], 1
  89 // IR-NEXT:    store i64 %[[SUB20]], ptr %[[DOTCAPTURE_EXPR_12]], align 8
  90 // IR-NEXT:    %[[TMP18:.+]] = load i32, ptr %[[DOTCAPTURE_EXPR_]], align 4
  91 // IR-NEXT:    store i32 %[[TMP18]], ptr %[[I]], align 4
  92 // IR-NEXT:    store i32 0, ptr %[[DOTUNROLLED_IV_J]], align 4
  93 // IR-NEXT:    %[[TMP19:.+]] = load i32, ptr %[[DOTCAPTURE_EXPR_]], align 4
  94 // IR-NEXT:    %[[TMP20:.+]] = load i32, ptr %[[DOTCAPTURE_EXPR_2]], align 4
  95 // IR-NEXT:    %[[CMP:.+]] = icmp slt i32 %[[TMP19]], %[[TMP20]]
  96 // IR-NEXT:    br i1 %[[CMP]], label %[[LAND_LHS_TRUE:.+]], label %[[OMP_PRECOND_END:.+]]
  97 // IR-EMPTY:
  98 // IR-NEXT:  [[LAND_LHS_TRUE]]:
  99 // IR-NEXT:    %[[TMP21:.+]] = load i32, ptr %[[DOTCAPTURE_EXPR_10]], align 4
 100 // IR-NEXT:    %[[CMP21:.+]] = icmp ult i32 0, %[[TMP21]]
 101 // IR-NEXT:    br i1 %[[CMP21]], label %[[OMP_PRECOND_THEN:.+]], label %[[OMP_PRECOND_END]]
 102 // IR-EMPTY:
 103 // IR-NEXT:  [[OMP_PRECOND_THEN]]:
 104 // IR-NEXT:    store i64 0, ptr %[[DOTOMP_LB]], align 8
 105 // IR-NEXT:    %[[TMP22:.+]] = load i64, ptr %[[DOTCAPTURE_EXPR_12]], align 8
 106 // IR-NEXT:    store i64 %[[TMP22]], ptr %[[DOTOMP_UB]], align 8
 107 // IR-NEXT:    store i64 1, ptr %[[DOTOMP_STRIDE]], align 8
 108 // IR-NEXT:    store i32 0, ptr %[[DOTOMP_IS_LAST]], align 4
 109 // IR-NEXT:    call void @__kmpc_for_static_init_8(ptr @1, i32 %[[TMP0]], i32 34, ptr %[[DOTOMP_IS_LAST]], ptr %[[DOTOMP_LB]], ptr %[[DOTOMP_UB]], ptr %[[DOTOMP_STRIDE]], i64 1, i64 1)
 110 // IR-NEXT:    %[[TMP23:.+]] = load i64, ptr %[[DOTOMP_UB]], align 8
 111 // IR-NEXT:    %[[TMP24:.+]] = load i64, ptr %[[DOTCAPTURE_EXPR_12]], align 8
 112 // IR-NEXT:    %[[CMP24:.+]] = icmp sgt i64 %[[TMP23]], %[[TMP24]]
 113 // IR-NEXT:    br i1 %[[CMP24]], label %[[COND_TRUE:.+]], label %[[COND_FALSE:.+]]
 114 // IR-EMPTY:
 115 // IR-NEXT:  [[COND_TRUE]]:
 116 // IR-NEXT:    %[[TMP25:.+]] = load i64, ptr %[[DOTCAPTURE_EXPR_12]], align 8
 117 // IR-NEXT:    br label %[[COND_END:.+]]
 118 // IR-EMPTY:
 119 // IR-NEXT:  [[COND_FALSE]]:
 120 // IR-NEXT:    %[[TMP26:.+]] = load i64, ptr %[[DOTOMP_UB]], align 8
 121 // IR-NEXT:    br label %[[COND_END]]
 122 // IR-EMPTY:
 123 // IR-NEXT:  [[COND_END]]:
 124 // IR-NEXT:    %[[COND:.+]] = phi i64 [ %[[TMP25]], %[[COND_TRUE]] ], [ %[[TMP26]], %[[COND_FALSE]] ]
 125 // IR-NEXT:    store i64 %[[COND]], ptr %[[DOTOMP_UB]], align 8
 126 // IR-NEXT:    %[[TMP27:.+]] = load i64, ptr %[[DOTOMP_LB]], align 8
 127 // IR-NEXT:    store i64 %[[TMP27]], ptr %[[DOTOMP_IV]], align 8
 128 // IR-NEXT:    br label %[[OMP_INNER_FOR_COND:.+]]
 129 // IR-EMPTY:
 130 // IR-NEXT:  [[OMP_INNER_FOR_COND]]:
 131 // IR-NEXT:    %[[TMP28:.+]] = load i64, ptr %[[DOTOMP_IV]], align 8
 132 // IR-NEXT:    %[[TMP29:.+]] = load i64, ptr %[[DOTOMP_UB]], align 8
 133 // IR-NEXT:    %[[CMP25:.+]] = icmp sle i64 %[[TMP28]], %[[TMP29]]
 134 // IR-NEXT:    br i1 %[[CMP25]], label %[[OMP_INNER_FOR_BODY:.+]], label %[[OMP_INNER_FOR_END:.+]]
 135 // IR-EMPTY:
 136 // IR-NEXT:  [[OMP_INNER_FOR_BODY]]:
 137 // IR-NEXT:    %[[TMP30:.+]] = load i32, ptr %[[DOTCAPTURE_EXPR_]], align 4
 138 // IR-NEXT:    %[[CONV26:.+]] = sext i32 %[[TMP30]] to i64
 139 // IR-NEXT:    %[[TMP31:.+]] = load i64, ptr %[[DOTOMP_IV]], align 8
 140 // IR-NEXT:    %[[TMP32:.+]] = load i32, ptr %[[DOTCAPTURE_EXPR_10]], align 4
 141 // IR-NEXT:    %[[SUB27:.+]] = sub i32 %[[TMP32]], -1
 142 // IR-NEXT:    %[[DIV28:.+]] = udiv i32 %[[SUB27]], 2
 143 // IR-NEXT:    %[[MUL29:.+]] = mul i32 1, %[[DIV28]]
 144 // IR-NEXT:    %[[CONV30:.+]] = zext i32 %[[MUL29]] to i64
 145 // IR-NEXT:    %[[DIV31:.+]] = sdiv i64 %[[TMP31]], %[[CONV30]]
 146 // IR-NEXT:    %[[TMP33:.+]] = load i32, ptr %[[DOTCAPTURE_EXPR_3]], align 4
 147 // IR-NEXT:    %[[CONV32:.+]] = sext i32 %[[TMP33]] to i64
 148 // IR-NEXT:    %[[MUL33:.+]] = mul nsw i64 %[[DIV31]], %[[CONV32]]
 149 // IR-NEXT:    %[[ADD34:.+]] = add nsw i64 %[[CONV26]], %[[MUL33]]
 150 // IR-NEXT:    %[[CONV35:.+]] = trunc i64 %[[ADD34]] to i32
 151 // IR-NEXT:    store i32 %[[CONV35]], ptr %[[I22]], align 4
 152 // IR-NEXT:    %[[TMP34:.+]] = load i64, ptr %[[DOTOMP_IV]], align 8
 153 // IR-NEXT:    %[[TMP35:.+]] = load i64, ptr %[[DOTOMP_IV]], align 8
 154 // IR-NEXT:    %[[TMP36:.+]] = load i32, ptr %[[DOTCAPTURE_EXPR_10]], align 4
 155 // IR-NEXT:    %[[SUB36:.+]] = sub i32 %[[TMP36]], -1
 156 // IR-NEXT:    %[[DIV37:.+]] = udiv i32 %[[SUB36]], 2
 157 // IR-NEXT:    %[[MUL38:.+]] = mul i32 1, %[[DIV37]]
 158 // IR-NEXT:    %[[CONV39:.+]] = zext i32 %[[MUL38]] to i64
 159 // IR-NEXT:    %[[DIV40:.+]] = sdiv i64 %[[TMP35]], %[[CONV39]]
 160 // IR-NEXT:    %[[TMP37:.+]] = load i32, ptr %[[DOTCAPTURE_EXPR_10]], align 4
 161 // IR-NEXT:    %[[SUB41:.+]] = sub i32 %[[TMP37]], -1
 162 // IR-NEXT:    %[[DIV42:.+]] = udiv i32 %[[SUB41]], 2
 163 // IR-NEXT:    %[[MUL43:.+]] = mul i32 1, %[[DIV42]]
 164 // IR-NEXT:    %[[CONV44:.+]] = zext i32 %[[MUL43]] to i64
 165 // IR-NEXT:    %[[MUL45:.+]] = mul nsw i64 %[[DIV40]], %[[CONV44]]
 166 // IR-NEXT:    %[[SUB46:.+]] = sub nsw i64 %[[TMP34]], %[[MUL45]]
 167 // IR-NEXT:    %[[MUL47:.+]] = mul nsw i64 %[[SUB46]], 2
 168 // IR-NEXT:    %[[ADD48:.+]] = add nsw i64 0, %[[MUL47]]
 169 // IR-NEXT:    %[[CONV49:.+]] = trunc i64 %[[ADD48]] to i32
 170 // IR-NEXT:    store i32 %[[CONV49]], ptr %[[DOTUNROLLED_IV_J23]], align 4
 171 // IR-NEXT:    %[[TMP38:.+]] = load i32, ptr %[[DOTUNROLLED_IV_J23]], align 4
 172 // IR-NEXT:    store i32 %[[TMP38]], ptr %[[DOTUNROLL_INNER_IV_J]], align 4
 173 // IR-NEXT:    br label %[[FOR_COND:.+]]
 174 // IR-EMPTY:
 175 // IR-NEXT:  [[FOR_COND]]:
 176 // IR-NEXT:    %[[TMP39:.+]] = load i32, ptr %[[DOTUNROLL_INNER_IV_J]], align 4
 177 // IR-NEXT:    %[[TMP40:.+]] = load i32, ptr %[[DOTUNROLLED_IV_J23]], align 4
 178 // IR-NEXT:    %[[ADD50:.+]] = add i32 %[[TMP40]], 2
 179 // IR-NEXT:    %[[CMP51:.+]] = icmp ult i32 %[[TMP39]], %[[ADD50]]
 180 // IR-NEXT:    br i1 %[[CMP51]], label %[[LAND_RHS:.+]], label %[[LAND_END:.+]]
 181 // IR-EMPTY:
 182 // IR-NEXT:  [[LAND_RHS]]:
 183 // IR-NEXT:    %[[TMP41:.+]] = load i32, ptr %[[DOTUNROLL_INNER_IV_J]], align 4
 184 // IR-NEXT:    %[[TMP42:.+]] = load i32, ptr %[[DOTCAPTURE_EXPR_7]], align 4
 185 // IR-NEXT:    %[[ADD52:.+]] = add i32 %[[TMP42]], 1
 186 // IR-NEXT:    %[[CMP53:.+]] = icmp ult i32 %[[TMP41]], %[[ADD52]]
 187 // IR-NEXT:    br label %[[LAND_END]]
 188 // IR-EMPTY:
 189 // IR-NEXT:  [[LAND_END]]:
 190 // IR-NEXT:    %[[TMP43:.+]] = phi i1 [ false, %[[FOR_COND]] ], [ %[[CMP53]], %[[LAND_RHS]] ]
 191 // IR-NEXT:    br i1 %[[TMP43]], label %[[FOR_BODY:.+]], label %[[FOR_END:.+]]
 192 // IR-EMPTY:
 193 // IR-NEXT:  [[FOR_BODY]]:
 194 // IR-NEXT:    %[[TMP44:.+]] = load i32, ptr %[[DOTCAPTURE_EXPR_4]], align 4
 195 // IR-NEXT:    %[[TMP45:.+]] = load i32, ptr %[[DOTUNROLL_INNER_IV_J]], align 4
 196 // IR-NEXT:    %[[TMP46:.+]] = load i32, ptr %[[DOTCAPTURE_EXPR_6]], align 4
 197 // IR-NEXT:    %[[MUL54:.+]] = mul i32 %[[TMP45]], %[[TMP46]]
 198 // IR-NEXT:    %[[ADD55:.+]] = add i32 %[[TMP44]], %[[MUL54]]
 199 // IR-NEXT:    store i32 %[[ADD55]], ptr %[[J]], align 4
 200 // IR-NEXT:    %[[TMP47:.+]] = load i32, ptr %[[START_ADDR]], align 4
 201 // IR-NEXT:    %[[TMP48:.+]] = load i32, ptr %[[END_ADDR]], align 4
 202 // IR-NEXT:    %[[TMP49:.+]] = load i32, ptr %[[STEP_ADDR]], align 4
 203 // IR-NEXT:    %[[TMP50:.+]] = load i32, ptr %[[I22]], align 4
 204 // IR-NEXT:    %[[TMP51:.+]] = load i32, ptr %[[J]], align 4
 205 // IR-NEXT:    call void (...) @body(i32 noundef %[[TMP47]], i32 noundef %[[TMP48]], i32 noundef %[[TMP49]], i32 noundef %[[TMP50]], i32 noundef %[[TMP51]])
 206 // IR-NEXT:    br label %[[FOR_INC:.+]]
 207 // IR-EMPTY:
 208 // IR-NEXT:  [[FOR_INC]]:
 209 // IR-NEXT:    %[[TMP52:.+]] = load i32, ptr %[[DOTUNROLL_INNER_IV_J]], align 4
 210 // IR-NEXT:    %[[INC:.+]] = add i32 %[[TMP52]], 1
 211 // IR-NEXT:    store i32 %[[INC]], ptr %[[DOTUNROLL_INNER_IV_J]], align 4
 212 // IR-NEXT:    br label %[[FOR_COND]], !llvm.loop ![[LOOP2:[0-9]+]]
 213 // IR-EMPTY:
 214 // IR-NEXT:  [[FOR_END]]:
 215 // IR-NEXT:    br label %[[OMP_BODY_CONTINUE:.+]]
 216 // IR-EMPTY:
 217 // IR-NEXT:  [[OMP_BODY_CONTINUE]]:
 218 // IR-NEXT:    br label %[[OMP_INNER_FOR_INC:.+]]
 219 // IR-EMPTY:
 220 // IR-NEXT:  [[OMP_INNER_FOR_INC]]:
 221 // IR-NEXT:    %[[TMP53:.+]] = load i64, ptr %[[DOTOMP_IV]], align 8
 222 // IR-NEXT:    %[[ADD56:.+]] = add nsw i64 %[[TMP53]], 1
 223 // IR-NEXT:    store i64 %[[ADD56]], ptr %[[DOTOMP_IV]], align 8
 224 // IR-NEXT:    br label %[[OMP_INNER_FOR_COND]]
 225 // IR-EMPTY:
 226 // IR-NEXT:  [[OMP_INNER_FOR_END]]:
 227 // IR-NEXT:    br label %[[OMP_LOOP_EXIT:.+]]
 228 // IR-EMPTY:
 229 // IR-NEXT:  [[OMP_LOOP_EXIT]]:
 230 // IR-NEXT:    call void @__kmpc_for_static_fini(ptr @1, i32 %[[TMP0]])
 231 // IR-NEXT:    br label %[[OMP_PRECOND_END]]
 232 // IR-EMPTY:
 233 // IR-NEXT:  [[OMP_PRECOND_END]]:
 234 // IR-NEXT:    call void @__kmpc_barrier(ptr @3, i32 %[[TMP0]])
 235 // IR-NEXT:    ret void
 236 // IR-NEXT:  }
 237 extern "C" void func(int start, int end, int step) {
 238   #pragma omp for collapse(2)
 239   for (int i = start; i < end; i+=step) {
 240     #pragma omp unroll partial
 241     for (int j = start; j < end; j+=step)
 242         body(start, end, step, i, j);
 243   }
 244 }
 245
 246 #endif /* HEADER */
 247
 248
 249 // IR: ![[LOOP2]] = distinct !{![[LOOP2]], ![[LOOPPROP3:[0-9]+]], ![[LOOPPROP4:[0-9]+]]}
 250 // IR: ![[LOOPPROP3]] = !{!"llvm.loop.mustprogress"}
 251 // IR: ![[LOOPPROP4]] = !{!"llvm.loop.unroll.count", i32 2}