llvm-project

Commit Graph

Author	SHA1	Message	Date
Layton Kifer	385e9a2a04	[DAGCombiner] Improve shift by select of constant Clean up a TODO, to support folding a shift of a constant by a select of constants, on targets with different shift operand sizes. Reviewed By: RKSimon, lebedev.ri Differential Revision: https://reviews.llvm.org/D90349	2020-12-18 02:21:42 +00:00
Layton Kifer	ac522f8700	[DAGCombiner] Fold (sext (not i1 x)) -> (add (zext i1 x), -1) Move fold of (sext (not i1 x)) -> (add (zext i1 x), -1) from X86 to DAGCombiner to improve codegen on other targets. Differential Revision: https://reviews.llvm.org/D91589	2020-12-06 11:52:10 -05:00
Sanjay Patel	781c49de9c	[AArch64] add tests for (v)select-of-constants; NFC These are copied from existing test files in x86/PPC. llvm-svn: 374568	2019-10-11 16:10:23 +00:00

Author

SHA1

Message

Date

Layton Kifer

385e9a2a04

[DAGCombiner] Improve shift by select of constant

Clean up a TODO, to support folding a shift of a constant by a
select of constants, on targets with different shift operand sizes.

Reviewed By: RKSimon, lebedev.ri

Differential Revision: https://reviews.llvm.org/D90349

2020-12-18 02:21:42 +00:00

Layton Kifer

ac522f8700

[DAGCombiner] Fold (sext (not i1 x)) -> (add (zext i1 x), -1)

Move fold of (sext (not i1 x)) -> (add (zext i1 x), -1) from X86 to DAGCombiner to improve codegen on other targets.

Differential Revision: https://reviews.llvm.org/D91589

2020-12-06 11:52:10 -05:00

Sanjay Patel

781c49de9c

[AArch64] add tests for (v)select-of-constants; NFC

These are copied from existing test files in x86/PPC.

llvm-svn: 374568

2019-10-11 16:10:23 +00:00

3 Commits