scan_codegen.cpp
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// RUN: %clang_cc1 -verify -fopenmp -fopenmp-version=50 -x c++ -triple x86_64-unknown-unknown -emit-llvm %s -o - | FileCheck %s
// RUN: %clang_cc1 -fopenmp -fopenmp-version=50 -x c++ -triple x86_64-unknown-unknown -emit-pch -o %t %s
// RUN: %clang_cc1 -fopenmp -fopenmp-version=50 -x c++ -triple x86_64-unknown-unknown -include-pch %t -verify %s -emit-llvm -o - | FileCheck %s
// RUN: %clang_cc1 -verify -fopenmp-simd -fopenmp-version=50 -x c++ -triple x86_64-unknown-unknown -emit-llvm %s -o - | FileCheck --check-prefix SIMD-ONLY0 %s
// RUN: %clang_cc1 -fopenmp-simd -fopenmp-version=50 -x c++ -triple x86_64-unknown-unknown -emit-pch -o %t %s
// RUN: %clang_cc1 -fopenmp-simd -fopenmp-version=50 -x c++ -triple x86_64-unknown-unknown -include-pch %t -verify %s -emit-llvm -o - | FileCheck --check-prefix SIMD-ONLY0 %s
// SIMD-ONLY0-NOT: {{__kmpc|__tgt}}
//
// expected-no-diagnostics
#ifndef HEADER
#define HEADER
void foo();
void bar();
// CHECK-LABEL: baz
void baz() {
int a = 0;
// CHECK: store i32 0, i32* [[A_ADDR:%.+]],
// CHECK: store i32 0, i32* [[OMP_CNT:%.+]],
// CHECK: br label %[[OMP_HEADER:.+]]
// CHECK: [[OMP_HEADER]]:
// CHECK: [[CNT_VAL:%.+]] = load i32, i32* [[OMP_CNT]],
// CHECK: [[CMP:%.+]] = icmp slt i32 [[CNT_VAL]], 10
// CHECK: br i1 [[CMP]], label %[[OMP_BODY:.+]], label %[[OMP_END:.+]]
#pragma omp simd reduction(inscan, + : a)
for (int i = 0; i < 10; ++i) {
// CHECK: [[OMP_BODY]]:
// i = OMP_CNT*1 + 0;
// CHECK: [[CNT_VAL:%.+]] = load i32, i32* [[OMP_CNT]],
// CHECK: [[MUL:%.+]] = mul nsw i32 [[CNT_VAL]], 1
// CHECK: [[ADD:%.+]] = add nsw i32 0, [[MUL]]
// CHECK: store i32 [[ADD]], i32* [[I_ADDR:%.+]],
// A_PRIV = 0;
// CHECK: store i32 0, i32* [[A_PRIV_ADDR:%.+]],
// goto DISPATCH;
// CHECK: br label %[[DISPATCH:[^,]+]]
// INPUT_PHASE:
// foo();
// goto REDUCE;
// CHECK: [[INPUT_PHASE:.+]]:
// CHECK: call void @{{.*}}foo{{.*}}()
// CHECK: br label %[[REDUCE:[^,]+]]
foo();
// DISPATCH:
// goto INPUT_PHASE;
// CHECK: [[DISPATCH]]:
// CHECK: br label %[[INPUT_PHASE]]
// REDUCE:
// A = A_PRIV + A;
// A_PRIV = A;
// goto SCAN_PHASE;
// CHECK: [[REDUCE]]:
// CHECK: [[A:%.+]] = load i32, i32* [[A_ADDR]],
// CHECK: [[A_PRIV:%.+]] = load i32, i32* [[A_PRIV_ADDR]],
// CHECK: [[SUM:%.+]] = add nsw i32 [[A]], [[A_PRIV]]
// CHECK: store i32 [[SUM]], i32* [[A_ADDR]],
// CHECK: [[A:%.+]] = load i32, i32* [[A_ADDR]],
// CHECK: store i32 [[A]], i32* [[A_PRIV_ADDR]],
// CHECK: br label %[[SCAN_PHASE:[^,]+]]
#pragma omp scan inclusive(a)
// SCAN_PHASE:
// bar();
// goto CONTINUE;
// CHECK: [[SCAN_PHASE]]:
// CHECK: call void @{{.*}}bar{{.*}}()
// CHECK: br label %[[CONTINUE:[^,]+]]
bar();
// CHECK: [[CONTINUE]]:
// CHECK: br label %[[INC_BLOCK:[^,]+]]
// ++OMP_CNT;
// CHECK: [[INC_BLOCK]]:
// CHECK: [[CNT:%.+]] = load i32, i32* [[OMP_CNT]],
// CHECK: [[INC:%.+]] = add nsw i32 [[CNT]], 1
// CHECK: store i32 [[INC]], i32* [[OMP_CNT]],
// CHECK: br label %[[OMP_HEADER]]
}
// CHECK: [[OMP_END]]:
}
struct S {
int a;
S() {}
~S() {}
S& operator+(const S&);
S& operator=(const S&);
};
// CHECK-LABEL: xyz
void xyz() {
S s[2];
// CHECK: [[S_BEGIN:%.+]] = getelementptr inbounds [2 x %struct.S], [2 x %struct.S]* [[S_ADDR:%.+]], i{{.+}} 0, i{{.+}} 0
// CHECK: [[S_END:%.+]] = getelementptr {{.*}}%struct.S, %struct.S* [[S_BEGIN]], i{{.+}} 2
// CHECK: br label %[[ARRAY_INIT:.+]]
// CHECK: [[ARRAY_INIT]]:
// CHECK: [[S_CUR:%.+]] = phi %struct.S* [ [[S_BEGIN]], %{{.+}} ], [ [[S_NEXT:%.+]], %[[ARRAY_INIT]] ]
// CHECK: call void [[CONSTR:@.+]](%struct.S* [[S_CUR]])
// CHECK: [[S_NEXT]] = getelementptr inbounds %struct.S, %struct.S* [[S_CUR]], i{{.+}} 1
// CHECK: [[IS_DONE:%.+]] = icmp eq %struct.S* [[S_NEXT]], [[S_END]]
// CHECK: br i1 [[IS_DONE]], label %[[DONE:.+]], label %[[ARRAY_INIT]]
// CHECK: [[DONE]]:
// CHECK: store i32 0, i32* [[OMP_CNT:%.+]],
// CHECK: br label %[[OMP_HEADER:.+]]
// CHECK: [[OMP_HEADER]]:
// CHECK: [[CNT_VAL:%.+]] = load i32, i32* [[OMP_CNT]],
// CHECK: [[CMP:%.+]] = icmp slt i32 [[CNT_VAL]], 10
// CHECK: br i1 [[CMP]], label %[[OMP_BODY:.+]], label %[[OMP_END:.+]]
#pragma omp simd reduction(inscan, + : s)
for (int i = 0; i < 10; ++i) {
// CHECK: [[OMP_BODY]]:
// i = OMP_CNT*1 + 0;
// CHECK: [[CNT_VAL:%.+]] = load i32, i32* [[OMP_CNT]],
// CHECK: [[MUL:%.+]] = mul nsw i32 [[CNT_VAL]], 1
// CHECK: [[ADD:%.+]] = add nsw i32 0, [[MUL]]
// CHECK: store i32 [[ADD]], i32* [[I_ADDR:%.+]],
// S S_PRIV[2];
// CHECK: [[S_BEGIN:%.+]] = getelementptr inbounds [2 x %struct.S], [2 x %struct.S]* [[S_PRIV_ADDR:%.+]], i{{.+}} 0, i{{.+}} 0
// CHECK: [[S_END:%.+]] = getelementptr {{.*}}%struct.S, %struct.S* [[S_BEGIN]], i{{.+}} 2
// CHECK: [[IS_DONE:%.+]] = icmp eq %struct.S* [[S_BEGIN]], [[S_END]]
// CHECK: br i1 [[IS_DONE]], label %[[DONE:.+]], label %[[ARRAY_INIT:[^,]+]]
// CHECK: [[ARRAY_INIT]]:
// CHECK: [[S_CUR:%.+]] = phi %struct.S* [ [[S_BEGIN]], %[[OMP_BODY]] ], [ [[S_NEXT:%.+]], %[[ARRAY_INIT]] ]
// CHECK: call void [[CONSTR]](%struct.S* [[S_CUR]])
// CHECK: [[S_NEXT]] = getelementptr {{.*}}%struct.S, %struct.S* [[S_CUR]], i{{.+}} 1
// CHECK: [[IS_DONE:%.+]] = icmp eq %struct.S* [[S_NEXT]], [[S_END]]
// CHECK: br i1 [[IS_DONE]], label %[[DONE:.+]], label %[[ARRAY_INIT]]
// CHECK: [[DONE]]:
// CHECK: [[LHS_BEGIN:%.+]] = bitcast [2 x %struct.S]* [[S_ADDR]] to %struct.S*
// CHECK: [[RHS_BEGIN:%.+]] = bitcast [2 x %struct.S]* [[S_PRIV_ADDR]] to %struct.S*
// goto DISPATCH;
// CHECK: br label %[[DISPATCH:[^,]+]]
// SCAN_PHASE:
// foo();
// goto CONTINUE;
// CHECK: [[SCAN_PHASE:.+]]:
// CHECK: call void @{{.*}}foo{{.*}}()
// CHECK: br label %[[CONTINUE:[^,]+]]
foo();
// DISPATCH:
// goto INPUT_PHASE;
// CHECK: [[DISPATCH]]:
// CHECK: br label %[[INPUT_PHASE:[^,]+]]
// REDUCE:
// TEMP = S;
// S = S_PRIV + S;
// S_PRIV = TEMP;
// goto SCAN_PHASE;
// CHECK: [[REDUCE:.+]]:
// S TEMP[2];
// CHECK: [[TEMP_ARR_BEG:%.+]] = getelementptr inbounds [2 x %struct.S], [2 x %struct.S]* [[TEMP_ARR:%.+]], i32 0, i32 0
// CHECK: [[TEMP_ARR_END:%.+]] = getelementptr inbounds %struct.S, %struct.S* [[TEMP_ARR_BEG]], i64 2
// CHECK: br label %[[BODY:[^,]+]]
// CHECK: [[BODY]]:
// CHECK: [[CUR:%.+]] = phi %struct.S* [ [[TEMP_ARR_BEG]], %[[REDUCE]] ], [ [[NEXT:%.+]], %[[BODY]] ]
// CHECK: call void [[CONSTR]](%struct.S* [[CUR]])
// CHECK: [[NEXT]] = getelementptr inbounds %struct.S, %struct.S* [[CUR]], i64 1
// CHECK: [[IS_DONE:%.+]] = icmp eq %struct.S* [[NEXT]], [[TEMP_ARR_END]]
// CHECK: br i1 [[IS_DONE]], label %[[EXIT:[^,]+]], label %[[BODY]]
// CHECK: [[EXIT]]:
// TEMP = S;
// CHECK: [[TEMP_ARR_BEG:%.+]] = getelementptr inbounds [2 x %struct.S], [2 x %struct.S]* [[TEMP_ARR]], i32 0, i32 0
// CHECK: [[TEMP_ARR_END:%.+]] = getelementptr %struct.S, %struct.S* [[TEMP_ARR_BEG]], i64 2
// CHECK: [[IS_EMPTY:%.+]] = icmp eq %struct.S* [[TEMP_ARR_BEG]], [[TEMP_ARR_END]]
// CHECK: br i1 [[IS_EMPTY]], label %[[EXIT:[^,]+]], label %[[BODY:[^,]+]]
// CHECK: [[BODY]]:
// CHECK: [[CUR_SRC:%.+]] = phi %struct.S* [ [[LHS_BEGIN]], %{{.+}} ], [ [[SRC_NEXT:%.+]], %[[BODY]] ]
// CHECK: [[CUR_DEST:%.+]] = phi %struct.S* [ [[TEMP_ARR_BEG]], %{{.+}} ], [ [[DEST_NEXT:%.+]], %[[BODY]] ]
// CHECK: call {{.*}}%struct.S* [[S_COPY:@.+]](%struct.S* [[CUR_DEST]], %struct.S* {{.*}}[[CUR_SRC]])
// CHECK: [[DEST_NEXT:%.+]] = getelementptr %struct.S, %struct.S* [[CUR_DEST]], i32 1
// CHECK: [[SRC_NEXT:%.+]] = getelementptr %struct.S, %struct.S* [[CUR_SRC]], i32 1
// CHECK: [[IS_DONE:%.+]] = icmp eq %struct.S* [[DEST_NEXT]], [[TEMP_ARR_END]]
// CHECK: br i1 [[IS_DONE]], label %[[EXIT]], label %[[BODY]]
// CHECK: [[EXIT]]:
// S = S_PRIV + S;
// CHECK: [[LHS_END:%.+]] = getelementptr {{.*}}%struct.S, %struct.S* [[LHS_BEGIN]], i{{.+}} 2
// CHECK: [[IS_DONE:%.+]] = icmp eq %struct.S* [[LHS_BEGIN]], [[LHS_END]]
// CHECK: br i1 [[IS_DONE]], label %[[DONE:.+]], label %[[ARRAY_REDUCE_COPY:[^,]+]]
// CHECK: [[ARRAY_REDUCE_COPY]]:
// CHECK: [[SRC_CUR:%.+]] = phi %struct.S* [ [[RHS_BEGIN]], %[[EXIT]] ], [ [[SRC_NEXT:%.+]], %[[ARRAY_REDUCE_COPY]] ]
// CHECK: [[DEST_CUR:%.+]] = phi %struct.S* [ [[LHS_BEGIN]], %[[EXIT]] ], [ [[DEST_NEXT:%.+]], %[[ARRAY_REDUCE_COPY]] ]
// CHECK: [[SUM:%.+]] = call {{.*}}%struct.S* @{{.+}}(%struct.S* [[DEST_CUR]], %struct.S* {{.*}}[[SRC_CUR]])
// CHECK: call {{.*}}%struct.S* [[S_COPY]](%struct.S* [[DEST_CUR]], %struct.S* {{.*}}[[SUM]])
// CHECK: [[DEST_NEXT]] = getelementptr {{.*}}%struct.S, %struct.S* [[DEST_CUR]], i{{.+}} 1
// CHECK: [[SRC_NEXT]] = getelementptr {{.*}}%struct.S, %struct.S* [[SRC_CUR]], i{{.+}} 1
// CHECK: [[IS_DONE:%.+]] = icmp eq %struct.S* [[DEST_NEXT]], [[LHS_END]]
// CHECK: br i1 [[IS_DONE]], label %[[DONE:.+]], label %[[ARRAY_REDUCE_COPY]]
// CHECK: [[DONE]]:
// S_PRIV = TEMP;
// CHECK: [[TEMP_ARR_BEG:%.+]] = bitcast [2 x %struct.S]* [[TEMP_ARR]] to %struct.S*
// CHECK: [[RHS_END:%.+]] = getelementptr %struct.S, %struct.S* [[RHS_BEGIN]], i64 2
// CHECK: [[IS_EMPTY:%.+]] = icmp eq %struct.S* [[RHS_BEGIN]], [[RHS_END]]
// CHECK: br i1 [[IS_EMPTY]], label %[[EXIT:[^,]+]], label %[[BODY:[^,]+]]
// CHECK: [[BODY]]:
// CHECK: [[CUR_SRC:%.+]] = phi %struct.S* [ [[TEMP_ARR_BEG]], %[[DONE]] ], [ [[SRC_NEXT:%.+]], %[[BODY]] ]
// CHECK: [[CUR_DEST:%.+]] = phi %struct.S* [ [[RHS_BEGIN]], %[[DONE]] ], [ [[DEST_NEXT:%.+]], %[[BODY]] ]
// CHECK: call {{.*}}%struct.S* [[S_COPY]](%struct.S* [[CUR_DEST]], %struct.S* {{.*}}[[CUR_SRC]])
// CHECK: [[DEST_NEXT]] = getelementptr %struct.S, %struct.S* [[CUR_DEST]], i32 1
// CHECK: [[SRC_NEXT]] = getelementptr %struct.S, %struct.S* [[CUR_SRC]], i32 1
// CHECK: [[IS_DONE:%.+]] = icmp eq %struct.S* [[DEST_NEXT]], [[RHS_END]]
// CHECK: br i1 [[IS_DONE]], label %[[DONE:[^,]+]], label %[[BODY]]
// CHECK: [[DONE]]:
// TEMP.~S()
// CHECK: [[TEMP_ARR_BEG:%.+]] = getelementptr inbounds [2 x %struct.S], [2 x %struct.S]* [[TEMP_ARR]], i32 0, i32 0
// CHECK: [[TEMP_ARR_END:%.+]] = getelementptr inbounds %struct.S, %struct.S* [[TEMP_ARR_BEG]], i64 2
// CHECK: br label %[[BODY:[^,]+]]
// CHECK: [[BODY]]:
// CHECK: [[CUR:%.+]] = phi %struct.S* [ [[TEMP_ARR_END]], %[[DONE]] ], [ [[PREV:%.+]], %[[BODY]] ]
// CHECK: [[PREV]] = getelementptr inbounds %struct.S, %struct.S* [[CUR]], i64 -1
// CHECK: call void [[DESTR:@.+]](%struct.S* [[PREV]])
// CHECK: [[IS_DONE:%.+]] = icmp eq %struct.S* [[PREV]], [[TEMP_ARR_BEG]]
// CHECK: br i1 [[IS_DONE]], label %[[EXIT:[^,]+]], label %[[BODY]]
// CHECK: [[EXIT]]:
// goto SCAN_PHASE;
// CHECK: br label %[[SCAN_PHASE]]
#pragma omp scan exclusive(s)
// INPUT_PHASE:
// bar();
// goto REDUCE;
// CHECK: [[INPUT_PHASE]]:
// CHECK: call void @{{.*}}bar{{.*}}()
// CHECK: br label %[[REDUCE]]
bar();
// CHECK: [[CONTINUE]]:
// S_PRIV[2].~S();
// CHECK: [[S_BEGIN:%.+]] = getelementptr inbounds [2 x %struct.S], [2 x %struct.S]* [[S_PRIV_ADDR]], i{{.+}} 0, i{{.+}} 0
// CHECK: [[S_END:%.+]] = getelementptr {{.*}}%struct.S, %struct.S* [[S_BEGIN]], i{{.+}} 2
// CHECK: br label %[[ARRAY_DESTR:[^,]+]]
// CHECK: [[ARRAY_DESTR]]:
// CHECK: [[S_CUR:%.+]] = phi %struct.S* [ [[S_END]], %[[CONTINUE]] ], [ [[S_PREV:%.+]], %[[ARRAY_DESTR]] ]
// CHECK: [[S_PREV]] = getelementptr {{.*}}%struct.S, %struct.S* [[S_CUR]], i{{.+}} -1
// CHECK: call void [[DESTR]](%struct.S* [[S_PREV]])
// CHECK: [[IS_DONE:%.+]] = icmp eq %struct.S* [[S_PREV]], [[S_BEGIN]]
// CHECK: br i1 [[IS_DONE]], label %[[DONE:.+]], label %[[ARRAY_DESTR]]
// CHECK: [[DONE]]:
// CHECK: br label %[[INC_BLOCK:[^,]+]]
// ++OMP_CNT;
// CHECK: [[INC_BLOCK]]:
// CHECK: [[CNT:%.+]] = load i32, i32* [[OMP_CNT]],
// CHECK: [[INC:%.+]] = add nsw i32 [[CNT]], 1
// CHECK: store i32 [[INC]], i32* [[OMP_CNT]],
// CHECK: br label %[[OMP_HEADER]]
}
// CHECK: [[OMP_END]]:
}
// CHECK-NOT: !{!"llvm.loop.parallel_accesses"
#endif // HEADER