llvm-project

Commit Graph

Author	SHA1	Message	Date
Simon Pilgrim	a6e9141505	[TTI] Add OperandValueProperties::OP_NegatedPowerOf2 enum (PR51436) The mul by constant costmodels handle power-of-2 constants, but not negated-power-of-2, despite the backends handling both. This patch adds the OperandValueProperties::OP_NegatedPowerOf2 enum and wires it for use for basic mul cost analysis and SLP handling. Fixes #50778 Differential Revision: https://reviews.llvm.org/D111968	2022-09-23 14:03:18 +01:00
Simon Pilgrim	e56b507447	[CostModel][X86] Add CostKinds test coverage for mul-by-constant patterns Help check to see the costs predicted for mul->shift conversions	2022-09-22 16:40:57 +01:00

Author

SHA1

Message

Date

Simon Pilgrim

a6e9141505

[TTI] Add OperandValueProperties::OP_NegatedPowerOf2 enum (PR51436)

The mul by constant costmodels handle power-of-2 constants, but not negated-power-of-2, despite the backends handling both.

This patch adds the OperandValueProperties::OP_NegatedPowerOf2 enum and wires it for use for basic mul cost analysis and SLP handling.

Fixes #50778

Differential Revision: https://reviews.llvm.org/D111968

2022-09-23 14:03:18 +01:00

Simon Pilgrim

e56b507447

[CostModel][X86] Add CostKinds test coverage for mul-by-constant patterns

Help check to see the costs predicted for mul->shift conversions

2022-09-22 16:40:57 +01:00

2 Commits