I'm working on a port of gcc (3.3.3) for an embedded processor. In my md file I have defined: (define_asm_attributes [(set_attr "length" "1") (set_attr "type" "ialu")]) and (define_insn_reservation "iarith" 1 (eq_attr "type" "ialu") "AnyInsn+Arith4") But the dfa scheduler doesn't pick up the scheduling resources assocatiated with attribute ialu indicated via my define_insn_reservation statements. This is only a problem for inline asm, it still schedules the C. Below is some output from the sched2 pass. When using inline asm the scheduler currently is noting that asm_operands use no resources and as a consequence the scheduling could be better. How can I get the scheduler to note what attributes inline asm uses? Cheers for any help John ;; ====================================================== ;; -- basic block 0 from 15 to 61 -- after reload ;; ====================================================== ;; 0--> 15 %w7=asm_operands :nothing <<<<<<< No reservations ;; 0--> 77 %w10=0x0|0x1 :(BothInsn+Arith8) ;; 1--> 26 %w3=high(`val') :(AnyInsn+Arith4) ;; 1--> 37 %w8=0x0 :(AnyInsn+Arith4) ;; 2--> 28 %w4=[%w3+low(`val')] :(AnyInsn+Memory+AnyPort),AnyPort,AnyPort,AnyPort ;; 2--> 38 %w6=%w7^0x1 :(AnyInsn+Arith4) ;; 3--> 35 %w3=%w3+low(`val') :(AnyInsn+Arith4) ;; 6--> 30 %w4=%w4+%w10 :(BothInsn+Arith8) ;; 7--> 42 asm_operands :nothing <<<<<<< No reservations ;; 8--> 46 %w2=asm_operands :nothing <<<<<<< No reservations ;; 8--> 48 %w2=%w2+0x1 :(AnyInsn+Arith4) ;; 9--> 50 asm_operands :nothing <<<<<<< No reservations ;; 9--> 72 %w3=high(`val') :(AnyInsn+Arith4) ;; 10--> 74 %w2=high(`fired') :(AnyInsn+Arith4) ;; 10--> 55 %w7=%w7<<0x2 :(AnyInsn+Arith4) ;; 11--> 56 %w6=0x1 :(AnyInsn+Arith4) ;; 11--> 73 %w2=%w2+low(`fired') :(AnyInsn+Arith4) ;; 12--> 57 [%w2+%w7]=%w6 :(AnyInsn+Memory+StorePort) ;; 13--> 61 [%w3+low(`val')]=%w4 :(AnyInsn+Memory+StorePort) ;; Ready list (final): ;; total time = 13 ;; new head = 15 ;; new tail = 61
