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* Followup on Proposal to move MIR physical register namespace to '$' sigil.Puyan Lotfi2018-01-311-6/+6
| | | | | | | | | | | | Discussed here: http://lists.llvm.org/pipermail/llvm-dev/2018-January/120320.html In preparation for adding support for named vregs we are changing the sigil for physical registers in MIR to '$' from '%'. This will prevent name clashes of named physical register with named vregs. llvm-svn: 323922
* [CodeGen] Always use `printReg` to print registers in both MIR and debugFrancis Visoiu Mistrih2017-11-301-1/+1
| | | | | | | | | | | | | | output As part of the unification of the debug format and the MIR format, always use `printReg` to print all kinds of registers. Updated the tests using '_' instead of '%noreg' until we decide which one we want to be the default one. Differential Revision: https://reviews.llvm.org/D40421 llvm-svn: 319445
* MIR: Print the register class or bank in vreg defsJustin Bogner2017-10-241-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | This updates the MIRPrinter to include the regclass when printing virtual register defs, which is already valid syntax for the parser. That is, given 64 bit %0 and %1 in a "gpr" regbank, %1(s64) = COPY %0(s64) would now be written as %1:gpr(s64) = COPY %0(s64) While this change alone introduces a bit of redundancy with the registers block, it allows us to update the tests to be more concise and understandable and brings us closer to being able to remove the registers block completely. Note: We generally only print the class in defs, but there is one exception. If there are uses without any defs whatsoever, we'll print the class on all uses. I'm not completely convinced this comes up in meaningful machine IR, but for now the MIRParser and MachineVerifier both accept that kind of stuff, so we don't want to have a situation where we can print something we can't parse. llvm-svn: 316479
* llc: Add ability to parse mir from stdinMatthias Braun2017-06-061-0/+20
- Add -x <language> option to switch between IR and MIR inputs. - Change MIR parser to read from stdin when filename is '-'. - Add a simple mir roundtrip test. llvm-svn: 304825
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