Compiler system using reordering of microoperations to eliminate

Details Compiler system using reordering of microoperations to eliminate Compiler system using reordering of microoperations to eliminate

1988-02-29

1990-10-23

Williams, Jr., Archie E.

Boots, shoes, and leggings

3642801, 3642805, 3649466, 36495834, 3649730, 36493101, G06F 922, G06F 930, G06F 942, G06F 945

Patent

active

049657240

ABSTRACT:
A compiler system compiles a source program described with assembler instructions, each of which defines microoperations, into a target program for use in a digital signal processor. If two of the assembler instructions are interlocked with each other and if another assembler instructions which is not associated with the interlocked instructions is present, it is inserted between the interlocked instructions to thereby reorder the microoperations of the source program. Thereafter, the microoperations thus reordered are combined so as not to conflict with each other with regard to the fields of the assembler instructions and resources used by the assembler instructions. Prior to combining the microoperations, whether or not a basic block of assembler instructions included in the source program having a loop may be determined. If so, a head portion of the basic block forming the loop may then be transferred to a tail portion of the basic block forming the loop.

REFERENCES:
patent: 4398249 (1983-08-01), Pardo et al.
patent: 4468736 (1984-08-01), DeSantis et al.
patent: 4567574 (1986-01-01), Saade 364900

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