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730fd62aad
llvm-mirror/lib
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Carl Ritson 730fd62aad [AMDGPU] Add llvm.amdgcn.wqm.demote intrinsic 
Add intrinsic which demotes all active lanes to helper lanes.
This is used to implement demote to helper Vulkan extension.

In practice demoting a lane to helper simply means removing it
from the mask of live lanes used for WQM/WWM/Exact mode.
Where the shader does not use WQM, demotes just become kills.

Additionally add llvm.amdgcn.live.mask intrinsic to complement
demote operations. In theory llvm.amdgcn.ps.live can be used
to detect helper lanes; however, ps.live can be moved by LICM.
The movement of ps.live cannot be remedied without changing
its type signature and such a change would require ps.live
users to update as well.

Reviewed By: piotr

Differential Revision: https://reviews.llvm.org/D94747
2021-02-15 08:45:46 +09:00
..
Analysis [BasicAA] Merge aliasGEP code paths 2021-02-14 19:35:36 +01:00
AsmParser Encode alignment attribute for cmpxchg 2021-02-11 15:17:50 -05:00
BinaryFormat [Debuginfo][DW_OP_implicit_pointer] (1/7) Support for DW_OP_LLVM_implicit_pointer 2021-01-15 14:45:04 +05:30
Bitcode [LTO] Perform DSOLocal propagation in combined index 2021-02-12 22:58:26 -08:00
Bitstream [llvm] Use llvm::append_range (NFC) 2021-01-06 18:27:33 -08:00
CodeGen [GlobalISel] Disable vector types in narrowScalarAddSub 2021-02-14 18:06:32 -05:00
DebugInfo DebugInfo/Symbolize: Exclude ARM mapping symbols for .symtab symbolization after D95916 2021-02-12 11:04:20 -08:00
Demangle [Demangle] Support demangling Swift calling convention in MS demangler. 2021-01-27 13:24:54 -08:00
DWARFLinker [dsymutil][DWARFLinker][NFC] make AddressManager not depending on the order of checks for relocations. 2021-01-31 16:34:10 +03:00
ExecutionEngine [llvm] Use llvm::is_contained (NFC) 2021-02-14 08:36:20 -08:00
Extensions
FileCheck [llvm] Use llvm::sort (NFC) 2021-01-17 10:39:45 -08:00
Frontend [OpenMPIRBuilder] Implement collapseLoops. 2021-02-03 19:12:02 -06:00
Fuzzer
FuzzMutate [FuzzMutate] Add mutator to modify instruction flags. 2021-01-23 19:05:20 +00:00
InterfaceStub [llvm-elfabi] Support ELF file that lacks .gnu.hash section 2021-01-26 12:31:52 -08:00
IR [LTO] Perform DSOLocal propagation in combined index 2021-02-12 22:58:26 -08:00
IRReader
LineEditor
Linker ValueMapper: Rename RF_MoveDistinctMDs => RF_ReuseAndMutateDistinctMDs, NFC 2021-02-10 16:53:21 -08:00
LTO [LTO] Perform DSOLocal propagation in combined index 2021-02-12 22:58:26 -08:00
MC ELFObjectWriter: Simplify 2021-02-13 14:52:30 -08:00
MCA [llvm] Use llvm::find (NFC) 2021-01-19 20:19:14 -08:00
Object [llvm] Use llvm::is_contained (NFC) 2021-02-14 08:36:20 -08:00
ObjectYAML [llvm-readobj] Add support for decoding FreeBSD ELF notes 2021-02-09 16:59:22 +00:00
Option [clang][cli] Command line round-trip for HeaderSearch options 2021-02-04 10:18:34 +01:00
Passes [llvm] Use llvm::is_contained (NFC) 2021-02-14 08:36:20 -08:00
ProfileData [CSSPGO][llvm-profgen] Add brackets for context id to support extended binary format 2021-02-12 01:14:53 -08:00
Remarks [llvm] Use append_range (NFC) 2021-01-27 23:25:41 -08:00
Support [llvm/Support] Add SHA256 implementation 2021-02-14 19:01:01 +00:00
TableGen [llvm] Use llvm::is_contained (NFC) 2021-02-14 08:36:20 -08:00
Target [AMDGPU] Add llvm.amdgcn.wqm.demote intrinsic 2021-02-15 08:45:46 +09:00
Testing [clangd] Implement semanticTokens modifiers 2021-02-09 16:31:22 +01:00
TextAPI [llvm] Use llvm::sort (NFC) 2021-01-17 10:39:45 -08:00
ToolDrivers llvm-lib: Pull error printing code out of two functions 2021-01-26 19:13:30 -05:00
Transforms [ConstraintElimination] Fix variables used for pattern matching. 2021-02-14 18:42:37 +00:00
WindowsManifest
XRay
CMakeLists.txt