Automated Generation of Custom Processor Core from C Code

Table 5

Difference in components and parameters between respective baseline and generated design.

Benchmark	Pipe	ALU1	ALU2	ALU3	RF 2 × 1	RF 4 × 2	RF 6 × 3	RF 8 × 4	RF 16 × 8	IDp
bdist2	N	#R = 64	#R = 64	#R = 64	#R = 64	#R = 64	#R = 64	#R = 64	#R = 64	Rf 8 × 4, 3 Alu, 2 Mul
	Y	#R = 32	#R = 32	#R = 32	#R = 32	#R = 32	#R = 32	#R = 32	#R = 32	Rf 8 × 4, 3 Alu, 2 Mul
Sort	N	#R = 16	#R = 16	#R = 16	#R = 16	#R = 16	#R = 16	#R = 16	#R = 16	Rf 6 × 3, 1 Alu
	Y	#R = 16	#R = 16	#R = 16	#R = 16	#R = 16	#R = 16	#R = 16	#R = 16	Rf 6 × 3, 1 Alu
dct32	N	Rf 4 × 2	Rf 6 × 3	Rf 8 × 4	—	2 Alu	3 Alu	3 Alu	3 Alu	Rf 16 × 8, 4 Alu, 2 Mul
	Y	Rf 4 × 2	Rf 4 × 2	Rf 6 × 3	—	2 Alu	2 Alu	2 Alu	3 Alu	Rf 16 × 8, 4 Alu, 2 Mul
Mp3	N	—	Rf 6 × 3	Rf 8 × 4	—	2 Alu	3 Alu	3 Alu	3 Alu	Rf 16 × 8, 4 Alu, 2 Mul
	Y	Rf 4 × 2	Rf 6 × 3	Rf 6 × 3	—	2 Alu	2 Alu	2 Alu	2 Alu	Rf 16 × 8, 4 Alu, 2 Mul
inv/forw 4 × 4	N	#R = 16	#R = 16	#R = 16	#R = 16	#R = 16	#R = 16	#R = 16	#R = 16	Rf 16 × 8, 4 Alu, 1 Mul
	Y	#R = 16	#R = 16	#R = 16	#R = 16	#R = 16	#R = 16	#R = 16	#R = 16	Rf 16 × 8, 4 Alu, 1 Mul