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93 lines
3.5 KiB
Fortran
93 lines
3.5 KiB
Fortran
C***********************************************************************
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C
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C EFFECTS.FOR
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C
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C D I S C L A I M E R N O T I C E
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C ------------------- -----------
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C
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C This document and/or portions of the material and data furnished
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C herewith, was developed under sponsorship of the U. S. Government.
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C Neither the U.S. nor the U.S.D.O.E., nor the Leland Stanford Junior
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C University, nor their employees, nor their respective contractors,
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C subcontractors, or their employees, makes any warranty, express or
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C implied, or assumes any liability or responsibility for accuracy,
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C completeness or usefulness of any information, apparatus, product
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C or process disclosed, or represents that its use will not infringe
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C privately-owned rights. Mention of any product, its manufacturer,
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C or suppliers shall not, nor is it intended to, imply approval, dis-
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C approval, or fitness for any particular use. The U. S. and the
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C University at all times retain the right to use and disseminate same
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C for any purpose whatsoever. Such distribution shall be made by the
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C National Energy Software Center at the Argonne National Laboratory
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C and only subject to the distributee furnishing satisfactory proof
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C that he has a valid license from the Intel Corporation in effect.
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C
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C
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C-----------------------------------------------------------------------
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C
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C This module of the PL/M-VAX compiler determines the side effects
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C of storage assignments and procedure calls for use in common
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C subexpression elimination and basic block analysis.
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C
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C-----------------------------------------------------------------------
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C
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C R E V I S I O N H I S T O R Y
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C
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C 10NOV81 Alex Hunter 1. Written.
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C
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C***********************************************************************
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SUBROUTINE DETERMINE_EFFECTS_OF_ASSIGNMENT (LHS)
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INCLUDE 'PLMCOM.FOR/NOLIST'
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IF (ATOM_MEM(LHS).NE.0) THEN
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MEMBER_SERIAL_NO(ATOM_MEM(LHS)) =
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# MEMBER_SERIAL_NO(ATOM_MEM(LHS)) + 1
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ELSE
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SYMBOL_SERIAL_NO(ATOM_SYM(LHS)) =
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# SYMBOL_SERIAL_NO(ATOM_SYM(LHS)) + 1
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ENDIF
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IF (ASSUME_EEQ .AND.
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# SYMBOL_REF(ATOM_SYM(LHS)).EQ.S_EXT) THEN
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EXTERNAL_SERIAL_DELTA = EXTERNAL_SERIAL_DELTA + 1
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! Invalidate all externals.
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ENDIF
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IF (ASSUME_BRO) THEN
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BASED_SERIAL_DELTA = BASED_SERIAL_DELTA + 1
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! Invalidate all based references.
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IF (ATOM_BASE(LHS).NE.NULL) THEN
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END_OF_BASIC_BLOCK = .TRUE.
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! All bets are off.
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ENDIF
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ENDIF
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IF (.NOT.ASSUME_SWB) THEN
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SUBCRIPTED_SERIAL_DELTA = SUBSCRIPTED_SERIAL_DELTA + 1
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! Invalidate all array references.
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IF (ATOM_SUB(LHS).NE.NULL) THEN
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END_OF_BASIC_BLOCK = .TRUE.
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! All bets are off.
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ENDIF
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ENDIF
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IF ((SYMBOL_FLAGS(ATOM_SYM(LHS)).AND.S_OVERLAID).NE.0) THEN
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OVERLAID_SERIAL_DELTA = OVERLAID_SERIAL_DELTA + 1
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! When equivalence chains are implemented, we will
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! be able to refine this if ASSUME_SVE is true.
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ENDIF
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RETURN
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END
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C-----------------------------------------------------------------------
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SUBROUTINE DETERMINE_EFFECTS_OF_CALLING (PROC_IX)
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INCLUDE 'PLMCOM.FOR/NOLIST'
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IF (ASSUME_PSE .AND.
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# (SYMBOL_FLAGS(PROC_IX).AND.S_NO_SIDE_EFFECTS).EQ.0) THEN
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SYMBOL_SERIAL_NO(PROC_IX) = SYMBOL_SERIAL_NO(PROC_IX) + 1
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END_OF_BASIC_BLOCK = .TRUE.
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! All bets are off.
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ENDIF
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RETURN
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END
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