> Also, just to confirm if I am on the right track, shouldnt the bit for > reg #1 (i.e $c1) be set in live_throughout in the insn chain for > insn #91 ( reproduced below for convenience ) ? > > (call_insn:HI 91 270 92 5 cor_h.c:129 (parallel [ > (set (reg:SI 1 $c1) > (call (mem:SI (symbol_ref:SI > ("DotProductWithoutShift") [flags 0x41] <function_decl 0x401f7d00 > DotProductWithoutShift>) [0 S4 A32]) > (const_int 0 [0x0]))) > (use (const_int 0 [0x0])) > (clobber (reg:SI 31 $link)) > ]) 42 {*call_value_direct} (expr_list:REG_DEAD (reg:SI 4 $c4) > (expr_list:REG_DEAD (reg:SI 3 $c3 [ ivtmp.103 ]) > (expr_list:REG_DEAD (reg:SI 2 $c2 [ h ]) > (nil)))) > (expr_list:REG_DEP_TRUE (use (reg:SI 4 $c4)) > (expr_list:REG_DEP_TRUE (use (reg:SI 3 $c3 [ ivtmp.103 ])) > (expr_list:REG_DEP_TRUE (use (reg:SI 2 $c2 [ h ])) > (expr_list:REG_DEP_TRUE (use (reg:SI 1 $c1 [ ivtmp.101 ])) > (nil))))))
I don't think so, it should be in dead_or_set, the value contained in $c1 dies in the insn. -- Eric Botcazou