fdvmDDe (1158418), страница 4
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*DVM$ DISTRIBUTE :: …
the sequence of statements to create distributed array is produced.
| void RealignArray ( | SgSymbol | *als, | ||
| als | - pointer to the symbol of realigned array | |||
| tgs | - pointer to the symbol of the alignment target array | |||
| iaxis | - the aligning rules are stored in the elements of reserved array dvm000 : dvm000(iaxis), dvm000(iaxis+1),... | |||
| nr | - the number of aligning rules | |||
| new_sign | - the flag that defines whether the contents of realigned array should be updated or not | |||
| stal | - pointer to the REALIGN directive | |||
Generates statement to realign the array:
dvm000(i) = realn(...)
and inserts it in procedure in place of REALIGN directive.
| void AllocateArray ( | SgStatement | *stmt, | ||
| stmt | - pointer to the statement of ALLOCATE function call | |||
| distribute_list | - DISTRIBUTE directive list | |||
If the POINTER variable in left part of assignment statement stmt has DISTRIBUTE attribute then AllocDistArray( ) function is called else AllocAlignArray( ) function is called.
| void AllocateDistArray ( | SgSymbol | *p, | ||
| p | - pointer to the symbol of POINTER variable | |||
| desc | - pointer to the descriptor reference expression (descriptor - vector of the dimension sizes of dynamic array) | |||
| stdis | - pointer to the DISTRIBUTE directive specifying p | |||
| stmt | - pointer to the statement of ALLOCATE function call: p = ALLOCATE(desc,...) | |||
Generates the statements to create Lib-DVM object and allocate a memory for dynamic array declared with DISTRIBUTE attribute and for all the arrays immediately or ultimately aligned with it, and inserts these statements in procedure in place of statement stmt.
| void AllocateAlignArray( | SgSymbol | *p, | ||
| p | - pointer to the symbol of POINTER variable | |||
| desc | - pointer to the descriptor reference expression (descriptor - vector of the dimension sizes of dynamic array) | |||
| stmt | - pointer to the statement of ALLOCATE function call: p = ALLOCATE(desc,...) | |||
The function generates the statements for creating distributed array declared with ALIGN and POINTER attributes and for the arrays aligned with it , and inserts these statements in procedure in place of statement stmt.
AlignTreeAlloc( ) and AlignAllocArray( ) are called.
void AlignTreeAlloc ( align *root )
| root | - pointer to the alignment tree root |
Traverses the alignment tree and calls the function AlignAllocArray() to create distributed arrays for the nodes of tree that are corresponds to the aligned arrays not having POINTER attribute.
| void AlignAllocArray( | align | *node, | ||
| node | - pointer to the alignment tree node that corresponds to the aligned array with attribute POINTER | |||
| root | - pointer to the alignment tree node that corresponds to the array node is aligned with | |||
| nr | - the number of the aligning rules | |||
| iaxis | - the aligning rules (AxisArray(nr), CoefArray(nr), ConstArray(nr)) are stored in the elements of reserved array dvm000 : dvm000(iaxis), dvm000(iaxis+1),... | |||
| desc | - pointer to the descriptor reference expression (descriptor - vector of the dimension sizes of dynamic array) | |||
Generates the statements to create LibDVM object and allocate a memory for dynamic array declared with ALIGN attribute and inserts these statements in procedure in place of statement pointer = ALLOCATE(desc,...).
| void ArrayHeader ( | SgSymbol | *ar, | ||
| ar | - pointer to the symbol of array | |||
| ind | - 0, if ar is POINTER | |||
| 1, if ar is distributed array | ||||
| n, where dvm000(n)is element storing pointer to the abstract machine representation, if ar is TEMPLATE | ||||
| -1, if ar is declared as array with postponed distribution. | ||||
Adds the attribute (ARRAY_HEADER) to the symbol of distributed object ar (ind - is value of attribute).
5.1.2Distributed array referencing
| void DistArrayRef ( | SgExpression | *e, | ||
| e | - pointer to the array reference expression | |||
| modified | - flag specifing whether array reference occurs in left or right part of assignment statement | |||
| st | - pointer to the statement where the array reference occurs. | |||
Linearizes distributed array element reference, that is, replaces reference
A(I1,I2, ..., IN)
by
N
base(A(N+2) + I1 + A(N-j+2) * Ij )
i=2
where A - distributed array name,
base - i0000m , if A is of type integer
r0000m , if A is of type real
d0000m , if A is of type double precision
c0000m , if A is of type complex
l0000m , if A is of type logical
| SgExpression *LinearForm ( | SgSymbol | *ar, | ||
| ar | - pointer to the symbol of distributed array | |||
| el | - pointer to the subscript list (I1,I2, ..., IN) of array reference | |||
Generates the expression
A(N+2) + I1 + A(N-j+2) * Ij
where A - distributed array name.
void ChangeDistArrayRef ( SgExpression *e )
| e | - pointer to the expression |
Traverses the expression e and linearizes each distributed array element reference (calls DistArrayRef( )).
void ChangeDistArrayRef_Left ( SgExpression *e )
| e | - pointer to the expression |
Traverses the expression e in left part of assignment statement and linearizes distributed array element reference (calls DistArrayRef( )).
void ChangeArg_DistArrayRef ( SgExpression *ele )
| ele | - pointer to the expression that is an actual argument of procedure |
Traverses the expression ele and linearizes distributed array element references, except whole array reference.
| void DebugVarArrayRef( | SgExpression | *e, | ||
| e | - pointer to the expression | |||
| stmt | - pointer to the statement that contains the expression e | |||
The function traverses the expression e and linearizes each distributed array element reference (calling DistArrayRef( )). If compilation mode is set on debugging this function inserts the statements before stmt to check values of the variables during the execution in debugging mode.
| void DebugVarArrayRef_Left ( | SgExpression | *e, | ||
| e | - pointer to the expression in left part of assignment statement | |||
| stmt | - pointer to the assignment statement that contains the expression e | |||
| stcur | - pointer to the statement after which new statements should be inserted. | |||
The function traverses the expression e and linearizes each distributed array element reference. If compilation mode is set on debugging this function inserts the Debugger calls after stcur and after stmt to check values of the variables during the execution in debugging mode.
| void DebugArg_VarArrayRef ( | SgExpression | *ele, | ||
| ele | - pointer to the expression that is an actual argument of procedure | |||
| stmt | - pointer to the statement that contains the expression e | |||
The function traverses the expression e and linearizes each distributed array element reference except whole array reference. If compilation mode is set on debugging this function inserts the statements before stmt to check values of the variables during the execution in debugging mode.
5.1.3Parallel loop
void ParallelLoop ( SgStatement *stmt )
| stmt | - pointer to the PARALLEL directive |
The parallel loop:
*DVM$ PARALLEL (I1, ..., In) ON A(…)...
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