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llvm-mirror/include
Brendon Cahoon 16a6bb6581 [AMDGPU][GlobalISel] Legalize and select G_SBFX and G_UBFX
Adds legalizer, register bank select, and instruction
select support for G_SBFX and G_UBFX. These opcodes generate
scalar or vector ALU bitfield extract instructions for
AMDGPU. The instructions allow both constant or register
values for the offset and width operands.

The 32-bit scalar version is expanded to a sequence that
combines the offset and width into a single register.

There are no 64-bit vgpr bitfield extract instructions, so the
operations are expanded to a sequence of instructions that
implement the operation. If the width is a constant,
then the 32-bit bitfield extract instructions are used.

Moved the AArch64 specific code for creating G_SBFX to
CombinerHelper.cpp so that it can be used by other targets.
Only bitfield extracts with constant offset and width values
are handled currently.

Differential Revision: https://reviews.llvm.org/D100149
2021-06-28 09:06:44 -04:00
..
llvm [AMDGPU][GlobalISel] Legalize and select G_SBFX and G_UBFX 2021-06-28 09:06:44 -04:00
llvm-c [ORC][C-bindings] Add access to LLJIT IRTransformLayer, ThreadSafeModule utils. 2021-06-19 11:50:27 +10:00