llvm-project

Commit Graph

Author	SHA1	Message	Date
Simon Pilgrim	c252200e4d	[DAG][ARM][MIPS][RISCV] Improve funnel shift promotion to use 'double shift' patterns Based on a discussion on D88783, if we're promoting a funnel shift to a width at least twice the size as the original type, then we can use the 'double shift' patterns (shifting the concatenated sources). Differential Revision: https://reviews.llvm.org/D89139	2020-10-12 14:11:02 +01:00
Simon Pilgrim	191fbda5d2	[ARM][MIPS] Add funnel shift test coverage Based on offline discussions regarding D89139 and D88783 - we want to make sure targets aren't doing anything particularly dumb Tests copied from aarch64 which has a mixture of general, legalization and special case tests	2020-10-09 19:19:47 +01:00

Author

SHA1

Message

Date

Simon Pilgrim

c252200e4d

[DAG][ARM][MIPS][RISCV] Improve funnel shift promotion to use 'double shift' patterns

Based on a discussion on D88783, if we're promoting a funnel shift to a width at least twice the size as the original type, then we can use the 'double shift' patterns (shifting the concatenated sources).

Differential Revision: https://reviews.llvm.org/D89139

2020-10-12 14:11:02 +01:00

Simon Pilgrim

191fbda5d2

[ARM][MIPS] Add funnel shift test coverage

Based on offline discussions regarding D89139 and D88783 - we want to make sure targets aren't doing anything particularly dumb

Tests copied from aarch64 which has a mixture of general, legalization and special case tests

2020-10-09 19:19:47 +01:00

2 Commits