search for: asmnam

Hi all, I am currently working on AMDGPU inline assembly and encountered problem with naming clobber registers in asm constraints. It looks like by default LLVM tries to match register specified in constraint to register name of register definition in .td file but not to the AsmName for this register. For example if we have register definition: def MYReg0 : Register<"r0", 0>; We want to create inline assembly and add this register to clobbers list. Inline assembly should look something like this: i32 asm "nop", "~{r0}"...

...ntioned yet is it will reduce the number of uses of isCodeGenOnly. The comment in Target.td indicates the long-term plan is to remove the distinction between isPseudo and isCodeGenOnly. A closely related to variable-sized register classes is the case where you have multiple registers with the same AsmName. This crops up in the same kind of cases where you have multiple instructions with the same encoding. Without a workaround, an assert is tripped in llvm-tblgen when trying to produce a StringSwitch for MatchRegisterName. The solution in Mips, PPC and others seems to be involve the generation of Ma...

I have posted a patch that switches the API to one that supports this (yet non-existent functionality) earlier: https://reviews.llvm.org/D24631 The comments from that were incorporated into the following RFC. Motivation: Certain targets feature "variable-sized" registers, i.e. a situation where the register size can be configured by a hardware switch. A common instruction set

..../../../tools/makedep -xo -xcross.o -C. -S../../.. -T../../.. faultrep.c > :info:build config.status: creating dlls/fusion/Makefile > :info:build config.status: creating dlls/fusion/tests/Makefile > :info:build ../../tools/makedep -C. -S../.. -T../.. asmcache.c asmenum.c asmname.c assembly.c fusion.c fusion_main.c version.rc > :info:build ../../../tools/makedep -xo -xcross.o -C. -S../../.. -T../../.. asmcache.c asmenum.c asmname.c fusion.c > :info:build config.status: creating dlls/fwpuclnt/Makefile > :info:build config.status: cre...