On 4/26/15 03:30, Richard Henderson wrote: > On 04/25/2015 05:12 AM, Chen Gang wrote: >> Hello All: >> >> I want to consult an issue I met below for the latest master branch, is >> it a qemu's bug? (it is about ctz/cnttz instruction for tilegx) >> >> OP: >> ld_i32 tmp0,env,$0xfffffffffffffffc >> movi_i32 tmp1,$0x0 >> brcond_i32 tmp0,tmp1,ne,$L0 >> movi_i64 tmp3,$0x0 /* Initialize tmp3 */ >> set_label $L1 >> shr_i64 tmp2,r2,tmp3 > > You can't keep temporaries live across basic blocks. > That is, across set_label, br, or brcond. In that case > you'd have to use tcg_new_local_temp() instead. > > That said, you shouldn't open-code ctz but instead use > a helper function and use ctz64(). >
Thank you very much for your valuable reply! It will save my much time resources for analyzing. And I shall try to let tilegx print "hello world" within this month (although it seems really difficult to me, at present). Thanks. -- Chen Gang Open, share, and attitude like air, water, and life which God blessed
