search for: storeregtostack

...the bundle loop. > > Is this intentional? > > On Mon, Mar 7, 2016 at 3:28 PM, Ryan Taylor <ryta1203 at gmail.com <mailto:ryta1203 at gmail.com>> wrote: > Looks like spillAroundUses is spilling multiple duplicate copies to the stack, for example, with some regs we get 1 storeRegToStack call, for others we get multiple (2-6+) and then these instructions are never eliminated. > > Looking at spillAroundUses it looks like multiple duplicate COPYs are being generated, why? One for each use? We need a new virtual register for each use to have an independent coloring for each of...

Looks like spillAroundUses is spilling multiple duplicate copies to the stack, for example, with some regs we get 1 storeRegToStack call, for others we get multiple (2-6+) and then these instructions are never eliminated. Looking at spillAroundUses it looks like multiple duplicate COPYs are being generated, why? One for each use? The reg_bundle holds these multiple copies so that we are iterating over the same exact COPY inst...

Hello, for an architecture that doesn't have a good way to load/store a given register class to memory, is it instead easy to spill/fill from another register class instead? e.g. - storeRegToStack/loadRegFromStack use a pseudo instruction and add virtual register operand is not supported (spill optimization doesn't seem to like this). - AMDGPU backend seems to do sth. similar? The only way to safely do it seems to use register scavenger to get a temp register, and spill this in eliminat...

...:47 PM, Hendrik Greving via llvm-dev < > llvm-dev at lists.llvm.org> wrote: > > Hello, for an architecture that doesn't have a good way to load/store a > given register class to memory, is it instead easy to spill/fill from > another register class instead? > e.g. > - storeRegToStack/loadRegFromStack use a pseudo instruction and add > virtual register operand is not supported (spill optimization doesn't seem > to like this). > - AMDGPU backend seems to do sth. similar? > > The only way to safely do it seems to use register scavenger to get a temp > registe...