search for: instaliases

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2015 Jul 13
2
[LLVMdev] [RFC] Conditional RegClass membership
...e of a hack," - and he suggested instead converting every instruction that takes an rGPR operand into a multiclass of two instructions, one predicated on HasV8Ops, and the other on its inverse. This isn't practical, however: ARMInstrThumb2.td specifies several hundred individual encodings, InstAliases and match patterns that use rGPR, and all these would need to be manually duplicated. Right now, we're trying to come up with a more sensible approach, and perhaps one that could be useful for other targets as well. Any suggestions? And are there any other cases where the definition of...
2012 Dec 18
0
[LLVMdev] Getting rid of tabs in LLVM's assembly output?
On Dec 18, 2012, at 3:39 PM, Chandler Carruth <chandlerc at google.com> wrote: > On Tue, Dec 18, 2012 at 3:36 PM, Tim Northover <t.p.northover at gmail.com> wrote: > > > Maybe it's naive, but I would expect it to be easy for each backend to > > > expose a constant N which is the length of the longest mnemonic, and then > > > for the printer to pad to
2012 Dec 18
2
[LLVMdev] Getting rid of tabs in LLVM's assembly output?
On Tue, Dec 18, 2012 at 3:36 PM, Tim Northover <t.p.northover at gmail.com>wrote: > > > Maybe it's naive, but I would expect it to be easy for each backend to > > > expose a constant N which is the length of the longest mnemonic, and > then > > > for the printer to pad to N+1 or N+2…. > > > > That would probably work for X86, but other targets