Re: [i386] Rotate stack checking loop

2015-11-12 Thread Uros Bizjak
Hello! > this patch rotates the loop generated in the prologue to do stack checking > when -fstack-check is specified, thereby saving one branch instruction. It > was initially implemented as a WHILE loop to match the generic implementation > but can be turned into a DO-WHILE loop because the amo

[i386] Rotate stack checking loop

2015-11-12 Thread Eric Botcazou
Hi, this patch rotates the loop generated in the prologue to do stack checking when -fstack-check is specified, thereby saving one branch instruction. It was initially implemented as a WHILE loop to match the generic implementation but can be turned into a DO-WHILE loop because the amount of s