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5 Commits

Author SHA1 Message Date
Puyan Lotfi 43e94b15ea Followup on Proposal to move MIR physical register namespace to '$' sigil. 
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
 2018-01-31 22:04:26 +00:00
Aditya Nandakumar f2aa2af24e [GISel]: Remove redundant copies at the end of ISel 
https://reviews.llvm.org/D42402

A lot of these copies are useless (copies b/w VRegs having the same
regclass) and should be cleaned up.

llvm-svn: 323291
 2018-01-24 01:35:26 +00:00
Justin Bogner 6c452834a1 MIR: Print the register class or bank in vreg defs 
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
 2017-10-24 18:04:54 +00:00
Aditya Nandakumar 4dfd2590dc [GISel][AArch64]: Fix illegal Generic copies in tests 
This is in preparation for a verifier check that makes sure copies are
of the same size (when generic virtual registers are involved).

llvm-svn: 316387
 2017-10-23 22:53:04 +00:00
Ahmed Bougacha 170778f0db [GlobalISel][AArch64] Split out select tests. NFC. 
The test has grown enough to be annoying to navigate.
While there, Remove unnecessary RUNs, and cleanup a couple comments.

llvm-svn: 297856
 2017-03-15 16:29:37 +00:00