search for: nosegmentedstack

...idea to add one that stops LLVM from generating segmented stacked version of a function. While implementing it, I ran into an issue: Currently, with segmented stacks enabled, LLVM sets the action for DYNAMIC_STACKALLOC to Custom, and lowers it into native X86 code. However, if a function has the nosegmentedstack attribute, DYNAMIC_STACKALLOC will need to be expanded. Is there some idiomatic way to choose whether a pseudo op is to be lowered or expanded based on some function attribute? Thanks! -- Sanjoy Das http://playingwithpointers.com

...ll functions called by it need segmented stacks too? Ciao, Duncan. While implementing it, I ran into an issue: > > Currently, with segmented stacks enabled, LLVM sets the action for > DYNAMIC_STACKALLOC to Custom, and lowers it into native X86 code. > However, if a function has the nosegmentedstack attribute, > DYNAMIC_STACKALLOC will need to be expanded. Is there some idiomatic > way to choose whether a pseudo op is to be lowered or expanded based > on some function attribute? > > Thanks!

On Sat, Feb 04, 2012 at 09:57:29AM +0100, Duncan Sands wrote: > Hi Sanjoy, > > > Now that LLVM has support for a larger attribute set, I think it is a > > good idea to add one that stops LLVM from generating segmented stacked > > version of a function. > > why? If some functions have segmented stacks, don't all functions called > by it need segmented stacks