Tom Stellard abc9871d60 GlobalISel: Use a callback to compute constrained reg class for unallocatble registers ...

Summary:
constrainOperandRegClass() currently fails if it tries to constrain the
register class of an operand that is defeined with an unallocatable register
class.  This patch resolves this by adding a target callback to compute
register constriants in this case.

This is required by the AMDGPU because many of its instructions have source opreands
defined with the unallocatable register classe VS_32 which is a union of two allocatable
register classes VGPR_32 and SReg_32.

Reviewers: dsanders, aditya_nandakumar

Reviewed By: aditya_nandakumar

Subscribers: rovka, kristof.beyls, tpr, llvm-commits

Differential Revision: https://reviews.llvm.org/D45991

llvm-svn: 331485

2018-05-03 21:44:16 +00:00

..

CallLowering.cpp

MachineFunction: Return reference from getFunction(); NFC

2017-12-15 22:22:58 +00:00

CMakeLists.txt

[globalisel][legalizer] Adapt LegalizerInfo to support inter-type dependencies and other things.

2018-01-29 19:54:49 +00:00

Combiner.cpp

[GISel]: Implement GlobalISel combiner API.

2018-01-25 00:41:58 +00:00

CombinerHelper.cpp

[GISel]: Implement GlobalISel combiner API.

2018-01-25 00:41:58 +00:00

GlobalISel.cpp

[GlobalISel] Make GlobalISel a non-optional library.

2017-08-03 21:52:25 +00:00

InstructionSelect.cpp

[GlobalISel] Reporting rules covered as part of the InstructionSelect's debug-only printing

2018-04-26 20:22:17 +00:00

InstructionSelector.cpp

[GISel] Make constrainSelectedInstRegOperands() available to the legalizer. NFC

2018-01-17 19:31:33 +00:00

IRTranslator.cpp

[GISel]: Fix incorrect IRTranslation while translating null pointer types

2018-03-22 17:31:38 +00:00

LegalityPredicates.cpp

Attempt to fix remaining build failures after r331071 by changing the tuple to a struct

2018-04-27 21:03:27 +00:00

LegalizeMutations.cpp

[globalisel][legalizerinfo] Add support for the Lower action in getActionDefinitionsBuilder() and use it in AArch64.

2018-04-09 21:10:09 +00:00

Legalizer.cpp

MachineFunction: Return reference from getFunction(); NFC

2017-12-15 22:22:58 +00:00

LegalizerHelper.cpp

Fix infinite loop after r331115

2018-04-30 17:20:01 +00:00

LegalizerInfo.cpp

[globalisel][legalizerinfo] Add support for legalization based on the MachineMemOperand

2018-04-27 19:48:53 +00:00

LLVMBuild.txt

…

Localizer.cpp

[CodeGen] Rename functions PrintReg* to printReg*

2017-11-28 12:42:37 +00:00

MachineIRBuilder.cpp

[globalisel][legalizerinfo] Introduce dedicated extending loads and add lowerings for them

2018-04-28 18:14:50 +00:00

RegBankSelect.cpp

IWYU for llvm-config.h in llvm, additions.

2018-04-30 14:59:11 +00:00

RegisterBank.cpp

IWYU for llvm-config.h in llvm, additions.

2018-04-30 14:59:11 +00:00

RegisterBankInfo.cpp

IWYU for llvm-config.h in llvm, additions.

2018-04-30 14:59:11 +00:00

Utils.cpp

GlobalISel: Use a callback to compute constrained reg class for unallocatble registers

2018-05-03 21:44:16 +00:00