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Author SHA1 Message Date
Petr Pavlu 84e89ff06f [GlobalISel] Set stack protector index when translating Intrinsic::stackprotector 
Record the stack protector index in MachineFrameInfo when translating
Intrinsic::stackprotector similarly as is done by SelectionDAG when
processing the same intrinsic.

Setting this index allows the Prologue/Epilogue Insertion to recognize
that the stack protection is enabled. The pass can then make sure that
the stack protector comes before local variables on the stack and
assigns potentially vulnerable objects first so they are close to the
stack protector slot.

Differential Revision: https://reviews.llvm.org/D55418

llvm-svn: 348761
 2018-12-10 15:15:05 +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
Vivek Pandya 56d87ef5d7 [Improve CodeGen Testing] This patch renables MIRPrinter print fields which have value equal to its default. 
If -simplify-mir option is passed then MIRPrinter will not print such fields.
This change also required some lit test cases in CodeGen directory to be changed.

Reviewed By: MatzeB

Differential Revision: https://reviews.llvm.org/D32304

llvm-svn: 304779
 2017-06-06 08:16:19 +00:00
Tim Northover d8b85584f2 GlobalISel: set correct regclass for LOAD_STACK_GUARD. 
Since it's not actually a generic MI, its register operands need a RegClass,
which is conveniently the target's pointer RegClass.

llvm-svn: 293335
 2017-01-27 21:31:24 +00:00
Tim Northover cdf23f1d93 GlobalISel: translate stack protector intrinsics 
llvm-svn: 285614
 2016-10-31 18:30:59 +00:00