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      1 // Test host codegen.
      2 // RUN: %clang_cc1 -verify -fopenmp -x c++ -triple powerpc64le-unknown-unknown -fopenmp-targets=powerpc64le-ibm-linux-gnu -emit-llvm %s -o - | FileCheck %s --check-prefix CHECK --check-prefix CHECK-64
      3 // RUN: %clang_cc1 -fopenmp -x c++ -std=c++11 -triple powerpc64le-unknown-unknown -fopenmp-targets=powerpc64le-ibm-linux-gnu -emit-pch -o %t %s
      4 // RUN: %clang_cc1 -fopenmp -x c++ -triple powerpc64le-unknown-unknown -fopenmp-targets=powerpc64le-ibm-linux-gnu -std=c++11 -include-pch %t -verify %s -emit-llvm -o - | FileCheck %s --check-prefix CHECK --check-prefix CHECK-64  --check-prefix HCHECK
      5 // RUN: %clang_cc1 -verify -fopenmp -x c++ -triple i386-unknown-unknown -fopenmp-targets=i386-pc-linux-gnu -emit-llvm %s -o - | FileCheck %s --check-prefix CHECK --check-prefix CHECK-32  --check-prefix HCHECK
      6 // RUN: %clang_cc1 -fopenmp -x c++ -std=c++11 -triple i386-unknown-unknown -fopenmp-targets=i386-pc-linux-gnu -emit-pch -o %t %s
      7 // RUN: %clang_cc1 -fopenmp -x c++ -triple i386-unknown-unknown -fopenmp-targets=i386-pc-linux-gnu -std=c++11 -include-pch %t -verify %s -emit-llvm -o - | FileCheck %s --check-prefix CHECK --check-prefix CHECK-32 --check-prefix HCHECK
      8 
      9 // Test target codegen - host bc file has to be created first. (no significant differences with host version of target region)
     10 // RUN: %clang_cc1 -verify -fopenmp -x c++ -triple powerpc64le-unknown-unknown -fopenmp-targets=powerpc64le-ibm-linux-gnu -emit-llvm-bc %s -o %t-ppc-host.bc
     11 // RUN: %clang_cc1 -verify -fopenmp -x c++ -triple powerpc64le-unknown-unknown -fopenmp-targets=powerpc64le-ibm-linux-gnu -emit-llvm %s -fopenmp-is-device -fopenmp-host-ir-file-path %t-ppc-host.bc -o - | FileCheck %s
     12 // RUN: %clang_cc1 -fopenmp -x c++ -std=c++11 -triple powerpc64le-unknown-unknown -fopenmp-targets=powerpc64le-ibm-linux-gnu -emit-pch -fopenmp-is-device -fopenmp-host-ir-file-path %t-ppc-host.bc -o %t %s
     13 // RUN: %clang_cc1 -fopenmp -x c++ -triple powerpc64le-unknown-unknown -fopenmp-targets=powerpc64le-ibm-linux-gnu -std=c++11 -fopenmp-is-device -fopenmp-host-ir-file-path %t-ppc-host.bc -include-pch %t -verify %s -emit-llvm -o - | FileCheck %s
     14 // RUN: %clang_cc1 -verify -fopenmp -x c++ -triple i386-unknown-unknown -fopenmp-targets=i386-pc-linux-gnu -emit-llvm-bc %s -o %t-x86-host.bc
     15 // RUN: %clang_cc1 -verify -fopenmp -x c++ -triple i386-unknown-unknown -fopenmp-targets=i386-pc-linux-gnu -emit-llvm %s -fopenmp-is-device -fopenmp-host-ir-file-path %t-x86-host.bc -o - | FileCheck %s
     16 // RUN: %clang_cc1 -fopenmp -x c++ -std=c++11 -triple i386-unknown-unknown -fopenmp-targets=i386-pc-linux-gnu -emit-pch -fopenmp-is-device -fopenmp-host-ir-file-path %t-x86-host.bc -o %t %s
     17 // RUN: %clang_cc1 -fopenmp -x c++ -triple i386-unknown-unknown -fopenmp-targets=i386-pc-linux-gnu -std=c++11 -fopenmp-is-device -fopenmp-host-ir-file-path %t-x86-host.bc -include-pch %t -verify %s -emit-llvm -o - | FileCheck %s
     18 
     19 // expected-no-diagnostics
     20 #ifndef HEADER
     21 #define HEADER
     22 
     23 // CHECK-DAG: %ident_t = type { i32, i32, i32, i32, i8* }
     24 // CHECK-DAG: [[STR:@.+]] = private unnamed_addr constant [23 x i8] c";unknown;unknown;0;0;;\00"
     25 // CHECK-DAG: [[DEF_LOC_0:@.+]] = private unnamed_addr constant %ident_t { i32 0, i32 2, i32 0, i32 0, i8* getelementptr inbounds ([23 x i8], [23 x i8]* [[STR]], i32 0, i32 0) }
     26 
     27 // CHECK-LABEL: define {{.*void}} @{{.*}}without_schedule_clause{{.*}}(float* {{.+}}, float* {{.+}}, float* {{.+}}, float* {{.+}})
     28 void without_schedule_clause(float *a, float *b, float *c, float *d) {
     29   #pragma omp target
     30   #pragma omp teams
     31   #pragma omp distribute
     32   for (int i = 33; i < 32000000; i += 7) {
     33     a[i] = b[i] * c[i] * d[i];
     34   }
     35 }
     36 
     37 // CHECK: define {{.*}}void @.omp_outlined.(i32* noalias [[GBL_TIDP:%.+]], i32* noalias [[BND_TID:%.+]], float** dereferenceable({{[0-9]+}}) [[APTR:%.+]], float** dereferenceable({{[0-9]+}}) [[BPTR:%.+]], float** dereferenceable({{[0-9]+}}) [[CPTR:%.+]], float** dereferenceable({{[0-9]+}}) [[DPTR:%.+]])
     38 // CHECK:  [[TID_ADDR:%.+]] = alloca i32*
     39 // CHECK:  [[IV:%.+iv]] = alloca i32
     40 // CHECK:  [[LB:%.+lb]] = alloca i32
     41 // CHECK:  [[UB:%.+ub]] = alloca i32
     42 // CHECK:  [[ST:%.+stride]] = alloca i32
     43 // CHECK:  [[LAST:%.+last]] = alloca i32
     44 // CHECK-DAG:  store i32* [[GBL_TIDP]], i32** [[TID_ADDR]]
     45 // CHECK-DAG:  store i32 0, i32* [[LB]]
     46 // CHECK-DAG:  store i32 4571423, i32* [[UB]]
     47 // CHECK-DAG:  store i32 1, i32* [[ST]]
     48 // CHECK-DAG:  store i32 0, i32* [[LAST]]
     49 // CHECK-DAG:  [[GBL_TID:%.+]] = load i32*, i32** [[TID_ADDR]]
     50 // CHECK-DAG:  [[GBL_TIDV:%.+]] = load i32, i32* [[GBL_TID]]
     51 // CHECK:  call void @__kmpc_for_static_init_{{.+}}(%ident_t* [[DEF_LOC_0]], i32 [[GBL_TIDV]], i32 92, i32* %.omp.is_last, i32* %.omp.lb, i32* %.omp.ub, i32* %.omp.stride, i32 1, i32 1)
     52 // CHECK-DAG:  [[UBV0:%.+]] = load i32, i32* [[UB]]
     53 // CHECK-DAG:  [[USWITCH:%.+]] = icmp sgt i32 [[UBV0]], 4571423
     54 // CHECK:  br i1 [[USWITCH]], label %[[BBCT:.+]], label %[[BBCF:.+]]
     55 // CHECK-DAG:  [[BBCT]]:
     56 // CHECK-DAG:  br label %[[BBCE:.+]]
     57 // CHECK-DAG:  [[BBCF]]:
     58 // CHECK-DAG:  [[UBV1:%.+]] = load i32, i32* [[UB]]
     59 // CHECK-DAG:  br label %[[BBCE]]
     60 // CHECK:  [[BBCE]]:
     61 // CHECK:  [[SELUB:%.+]] = phi i32 [ 4571423, %[[BBCT]] ], [ [[UBV1]], %[[BBCF]] ]
     62 // CHECK:  store i32 [[SELUB]], i32* [[UB]]
     63 // CHECK:  [[LBV0:%.+]] = load i32, i32* [[LB]]
     64 // CHECK:  store i32 [[LBV0]], i32* [[IV]]
     65 // CHECK:  br label %[[BBINNFOR:.+]]
     66 // CHECK:  [[BBINNFOR]]:
     67 // CHECK:  [[IVVAL0:%.+]] = load i32, i32* [[IV]]
     68 // CHECK:  [[UBV2:%.+]] = load i32, i32* [[UB]]
     69 // CHECK:  [[IVLEUB:%.+]] = icmp sle i32 [[IVVAL0]], [[UBV2]]
     70 // CHECK:  br i1 [[IVLEUB]], label %[[BBINNBODY:.+]], label %[[BBINNEND:.+]]
     71 // CHECK:  [[BBINNBODY]]:
     72 // CHECK:  {{.+}} = load i32, i32* [[IV]]
     73 // ... loop body ...
     74 // CHECK:  br label %[[BBBODYCONT:.+]]
     75 // CHECK:  [[BBBODYCONT]]:
     76 // CHECK:  br label %[[BBINNINC:.+]]
     77 // CHECK:  [[BBINNINC]]:
     78 // CHECK:  [[IVVAL1:%.+]] = load i32, i32* [[IV]]
     79 // CHECK:  [[IVINC:%.+]] = add nsw i32 [[IVVAL1]], 1
     80 // CHECK:  store i32 [[IVINC]], i32* [[IV]]
     81 // CHECK:  br label %[[BBINNFOR]]
     82 // CHECK:  [[BBINNEND]]:
     83 // CHECK:  br label %[[LPEXIT:.+]]
     84 // CHECK:  [[LPEXIT]]:
     85 // CHECK:  call void @__kmpc_for_static_fini(%ident_t* [[DEF_LOC_0]], i32 [[GBL_TIDV]])
     86 // CHECK:  ret void
     87 
     88 
     89 // CHECK-LABEL: define {{.*void}} @{{.*}}static_not_chunked{{.*}}(float* {{.+}}, float* {{.+}}, float* {{.+}}, float* {{.+}})
     90 void static_not_chunked(float *a, float *b, float *c, float *d) {
     91   #pragma omp target
     92   #pragma omp teams
     93   #pragma omp distribute dist_schedule(static)
     94   for (int i = 32000000; i > 33; i += -7) {
     95         a[i] = b[i] * c[i] * d[i];
     96   }
     97 }
     98 
     99 // CHECK: define {{.*}}void @.omp_outlined.{{.*}}(i32* noalias [[GBL_TIDP:%.+]], i32* noalias [[BND_TID:%.+]], float** dereferenceable({{[0-9]+}}) [[APTR:%.+]], float** dereferenceable({{[0-9]+}}) [[BPTR:%.+]], float** dereferenceable({{[0-9]+}}) [[CPTR:%.+]], float** dereferenceable({{[0-9]+}}) [[DPTR:%.+]])
    100 // CHECK:  [[TID_ADDR:%.+]] = alloca i32*
    101 // CHECK:  [[IV:%.+iv]] = alloca i32
    102 // CHECK:  [[LB:%.+lb]] = alloca i32
    103 // CHECK:  [[UB:%.+ub]] = alloca i32
    104 // CHECK:  [[ST:%.+stride]] = alloca i32
    105 // CHECK:  [[LAST:%.+last]] = alloca i32
    106 // CHECK-DAG:  store i32* [[GBL_TIDP]], i32** [[TID_ADDR]]
    107 // CHECK-DAG:  store i32 0, i32* [[LB]]
    108 // CHECK-DAG:  store i32 4571423, i32* [[UB]]
    109 // CHECK-DAG:  store i32 1, i32* [[ST]]
    110 // CHECK-DAG:  store i32 0, i32* [[LAST]]
    111 // CHECK-DAG:  [[GBL_TID:%.+]] = load i32*, i32** [[TID_ADDR]]
    112 // CHECK-DAG:  [[GBL_TIDV:%.+]] = load i32, i32* [[GBL_TID]]
    113 // CHECK:  call void @__kmpc_for_static_init_{{.+}}(%ident_t* [[DEF_LOC_0]], i32 [[GBL_TIDV]], i32 92, i32* %.omp.is_last, i32* %.omp.lb, i32* %.omp.ub, i32* %.omp.stride, i32 1, i32 1)
    114 // CHECK-DAG:  [[UBV0:%.+]] = load i32, i32* [[UB]]
    115 // CHECK-DAG:  [[USWITCH:%.+]] = icmp sgt i32 [[UBV0]], 4571423
    116 // CHECK:  br i1 [[USWITCH]], label %[[BBCT:.+]], label %[[BBCF:.+]]
    117 // CHECK-DAG:  [[BBCT]]:
    118 // CHECK-DAG:  br label %[[BBCE:.+]]
    119 // CHECK-DAG:  [[BBCF]]:
    120 // CHECK-DAG:  [[UBV1:%.+]] = load i32, i32* [[UB]]
    121 // CHECK-DAG:  br label %[[BBCE]]
    122 // CHECK:  [[BBCE]]:
    123 // CHECK:  [[SELUB:%.+]] = phi i32 [ 4571423, %[[BBCT]] ], [ [[UBV1]], %[[BBCF]] ]
    124 // CHECK:  store i32 [[SELUB]], i32* [[UB]]
    125 // CHECK:  [[LBV0:%.+]] = load i32, i32* [[LB]]
    126 // CHECK:  store i32 [[LBV0]], i32* [[IV]]
    127 // CHECK:  br label %[[BBINNFOR:.+]]
    128 // CHECK:  [[BBINNFOR]]:
    129 // CHECK:  [[IVVAL0:%.+]] = load i32, i32* [[IV]]
    130 // CHECK:  [[UBV2:%.+]] = load i32, i32* [[UB]]
    131 // CHECK:  [[IVLEUB:%.+]] = icmp sle i32 [[IVVAL0]], [[UBV2]]
    132 // CHECK:  br i1 [[IVLEUB]], label %[[BBINNBODY:.+]], label %[[BBINNEND:.+]]
    133 // CHECK:  [[BBINNBODY]]:
    134 // CHECK:  {{.+}} = load i32, i32* [[IV]]
    135 // ... loop body ...
    136 // CHECK:  br label %[[BBBODYCONT:.+]]
    137 // CHECK:  [[BBBODYCONT]]:
    138 // CHECK:  br label %[[BBINNINC:.+]]
    139 // CHECK:  [[BBINNINC]]:
    140 // CHECK:  [[IVVAL1:%.+]] = load i32, i32* [[IV]]
    141 // CHECK:  [[IVINC:%.+]] = add nsw i32 [[IVVAL1]], 1
    142 // CHECK:  store i32 [[IVINC]], i32* [[IV]]
    143 // CHECK:  br label %[[BBINNFOR]]
    144 // CHECK:  [[BBINNEND]]:
    145 // CHECK:  br label %[[LPEXIT:.+]]
    146 // CHECK:  [[LPEXIT]]:
    147 // CHECK:  call void @__kmpc_for_static_fini(%ident_t* [[DEF_LOC_0]], i32 [[GBL_TIDV]])
    148 // CHECK:  ret void
    149 
    150 
    151 // CHECK-LABEL: define {{.*void}} @{{.*}}static_chunked{{.*}}(float* {{.+}}, float* {{.+}}, float* {{.+}}, float* {{.+}})
    152 void static_chunked(float *a, float *b, float *c, float *d) {
    153   #pragma omp target
    154   #pragma omp teams
    155 #pragma omp distribute dist_schedule(static, 5)
    156   for (unsigned i = 131071; i <= 2147483647; i += 127) {
    157     a[i] = b[i] * c[i] * d[i];
    158   }
    159 }
    160 
    161 // CHECK: define {{.*}}void @.omp_outlined.{{.*}}(i32* noalias [[GBL_TIDP:%.+]], i32* noalias [[BND_TID:%.+]], float** dereferenceable({{[0-9]+}}) [[APTR:%.+]], float** dereferenceable({{[0-9]+}}) [[BPTR:%.+]], float** dereferenceable({{[0-9]+}}) [[CPTR:%.+]], float** dereferenceable({{[0-9]+}}) [[DPTR:%.+]])
    162 // CHECK:  [[TID_ADDR:%.+]] = alloca i32*
    163 // CHECK:  [[IV:%.+iv]] = alloca i32
    164 // CHECK:  [[LB:%.+lb]] = alloca i32
    165 // CHECK:  [[UB:%.+ub]] = alloca i32
    166 // CHECK:  [[ST:%.+stride]] = alloca i32
    167 // CHECK:  [[LAST:%.+last]] = alloca i32
    168 // CHECK-DAG:  store i32* [[GBL_TIDP]], i32** [[TID_ADDR]]
    169 // CHECK-DAG:  store i32 0, i32* [[LB]]
    170 // CHECK-DAG:  store i32 16908288, i32* [[UB]]
    171 // CHECK-DAG:  store i32 1, i32* [[ST]]
    172 // CHECK-DAG:  store i32 0, i32* [[LAST]]
    173 // CHECK-DAG:  [[GBL_TID:%.+]] = load i32*, i32** [[TID_ADDR]]
    174 // CHECK-DAG:  [[GBL_TIDV:%.+]] = load i32, i32* [[GBL_TID]]
    175 // CHECK:  call void @__kmpc_for_static_init_{{.+}}(%ident_t* [[DEF_LOC_0]], i32 [[GBL_TIDV]], i32 91, i32* %.omp.is_last, i32* %.omp.lb, i32* %.omp.ub, i32* %.omp.stride, i32 1, i32 5)
    176 // CHECK-DAG:  [[UBV0:%.+]] = load i32, i32* [[UB]]
    177 // CHECK-DAG:  [[USWITCH:%.+]] = icmp ugt i32 [[UBV0]], 16908288
    178 // CHECK:  br i1 [[USWITCH]], label %[[BBCT:.+]], label %[[BBCF:.+]]
    179 // CHECK-DAG:  [[BBCT]]:
    180 // CHECK-DAG:  br label %[[BBCE:.+]]
    181 // CHECK-DAG:  [[BBCF]]:
    182 // CHECK-DAG:  [[UBV1:%.+]] = load i32, i32* [[UB]]
    183 // CHECK-DAG:  br label %[[BBCE]]
    184 // CHECK:  [[BBCE]]:
    185 // CHECK:  [[SELUB:%.+]] = phi i32 [ 16908288, %[[BBCT]] ], [ [[UBV1]], %[[BBCF]] ]
    186 // CHECK:  store i32 [[SELUB]], i32* [[UB]]
    187 // CHECK:  [[LBV0:%.+]] = load i32, i32* [[LB]]
    188 // CHECK:  store i32 [[LBV0]], i32* [[IV]]
    189 // CHECK:  br label %[[BBINNFOR:.+]]
    190 // CHECK:  [[BBINNFOR]]:
    191 // CHECK:  [[IVVAL0:%.+]] = load i32, i32* [[IV]]
    192 // CHECK:  [[UBV2:%.+]] = load i32, i32* [[UB]]
    193 // CHECK:  [[IVLEUB:%.+]] = icmp ule i32 [[IVVAL0]], [[UBV2]]
    194 // CHECK:  br i1 [[IVLEUB]], label %[[BBINNBODY:.+]], label %[[BBINNEND:.+]]
    195 // CHECK:  [[BBINNBODY]]:
    196 // CHECK:  {{.+}} = load i32, i32* [[IV]]
    197 // ... loop body ...
    198 // CHECK:  br label %[[BBBODYCONT:.+]]
    199 // CHECK:  [[BBBODYCONT]]:
    200 // CHECK:  br label %[[BBINNINC:.+]]
    201 // CHECK:  [[BBINNINC]]:
    202 // CHECK:  [[IVVAL1:%.+]] = load i32, i32* [[IV]]
    203 // CHECK:  [[IVINC:%.+]] = add i32 [[IVVAL1]], 1
    204 // CHECK:  store i32 [[IVINC]], i32* [[IV]]
    205 // CHECK:  br label %[[BBINNFOR]]
    206 // CHECK:  [[BBINNEND]]:
    207 // CHECK:  br label %[[LPEXIT:.+]]
    208 // CHECK:  [[LPEXIT]]:
    209 // CHECK:  call void @__kmpc_for_static_fini(%ident_t* [[DEF_LOC_0]], i32 [[GBL_TIDV]])
    210 // CHECK:  ret void
    211 
    212 // CHECK-LABEL: test_precond
    213 void test_precond() {
    214   char a = 0;
    215   #pragma omp target
    216   #pragma omp teams
    217   #pragma omp distribute
    218   for(char i = a; i < 10; ++i);
    219 }
    220 
    221 // a is passed as a parameter to the outlined functions
    222 // CHECK:  define {{.*}}void @.omp_outlined.{{.*}}(i32* noalias [[GBL_TIDP:%.+]], i32* noalias [[BND_TID:%.+]], i8* dereferenceable({{[0-9]+}}) [[APARM:%.+]])
    223 // CHECK:  store i8* [[APARM]], i8** [[APTRADDR:%.+]]
    224 // ..many loads of %0..
    225 // CHECK:  [[A2:%.+]] = load i8*, i8** [[APTRADDR]]
    226 // CHECK:  [[AVAL0:%.+]] = load i8, i8* [[A2]]
    227 // CHECK:  store i8 [[AVAL0]], i8* [[CAP_EXPR:%.+]],
    228 // CHECK:  [[AVAL1:%.+]] = load i8, i8* [[CAP_EXPR]]
    229 // CHECK:  load i8, i8* [[CAP_EXPR]]
    230 // CHECK:  [[AVAL2:%.+]] = load i8, i8* [[CAP_EXPR]]
    231 // CHECK:  [[ACONV:%.+]] = sext i8 [[AVAL2]] to i32
    232 // CHECK:  [[ACMP:%.+]] = icmp slt i32 [[ACONV]], 10
    233 // CHECK:  br i1 [[ACMP]], label %[[PRECOND_THEN:.+]], label %[[PRECOND_END:.+]]
    234 // CHECK:  [[PRECOND_THEN]]
    235 // CHECK:  call void @__kmpc_for_static_init_4
    236 // CHECK:  call void @__kmpc_for_static_fini
    237 // CHECK:  [[PRECOND_END]]
    238 
    239 // no templates for now, as these require special handling in target regions and/or declare target
    240 
    241 // HCHECK-LABEL: fint
    242 // HCHECK: call {{.*}}i32 {{.+}}ftemplate
    243 // HCHECK: ret i32
    244 
    245 // HCHECK: load i16, i16*
    246 // HCHECK: store i16 %
    247 // HCHECK: call i32 @__tgt_target_teams(
    248 // HCHECK: call void @__kmpc_for_static_init_4(
    249 template <typename T>
    250 T ftemplate() {
    251   short aa = 0;
    252 
    253 #pragma omp target
    254 #pragma omp teams
    255 #pragma omp distribute dist_schedule(static, aa)
    256   for (int i = 0; i < 100; i++) {
    257   }
    258   return T();
    259 }
    260 
    261 int fint(void) { return ftemplate<int>(); }
    262 
    263 #endif
    264