llvm-project

Commit Graph

Author	SHA1	Message	Date
Jonas Paulsson	c110b5b69f	[SystemZ] Wait with selection of legal vector/FP constants until Select(). This patch aims to make sure that any such constant that can be generated with a vector instruction (for example VGBM) is recognized as such during legalization and kept as a target independent node through post-legalize DAGCombining. Two new functions named isVectorConstantLegal() and loadVectorConstant() replace old ways of handling vector/FP constants. A new struct named SystemZVectorConstantInfo is used to cache the results of isVectorConstantLegal() and pass them onto loadVectorConstant(). Support for fp128 constants in the presence of FeatureVectorEnhancements1 (z14) has been added. Review: Ulrich Weigand https://reviews.llvm.org/D58270 llvm-svn: 354896	2019-02-26 16:47:59 +00:00
Jonas Paulsson	8cda83a5db	[SystemZ] Wait with VGBM selection until after DAGCombine2. Don't lower BUILD_VECTORs to BYTE_MASK, but instead expose the BUILD_VECTORs to the DAGCombiner and select them to VGBM in Select(). This allows the DAGCombiner to understand the constant vector values. For floating point, only all-zeros vectors are now generated with VGBM, as it turned out to be somewhat complicated to handle any arbitrary constants, while in practice this is very rare and hardly needed. The SystemZ ISD opcodes z_byte_mask, z_vzero and z_vones have been removed. Review: Ulrich Weigand https://reviews.llvm.org/D57152 llvm-svn: 353325	2019-02-06 18:59:19 +00:00
Ulrich Weigand	cd808237b2	[SystemZ] Add CodeGen support for v2f64 This adds ABI and CodeGen support for the v2f64 type, which is natively supported by z13 instructions. Based on a patch by Richard Sandiford. llvm-svn: 236522	2015-05-05 19:26:48 +00:00

Author

SHA1

Message

Date

Jonas Paulsson

c110b5b69f

[SystemZ] Wait with selection of legal vector/FP constants until Select().

This patch aims to make sure that any such constant that can be generated
with a vector instruction (for example VGBM) is recognized as such during
legalization and kept as a target independent node through post-legalize
DAGCombining.

Two new functions named isVectorConstantLegal() and loadVectorConstant()
replace old ways of handling vector/FP constants.

A new struct named SystemZVectorConstantInfo is used to cache the results of
isVectorConstantLegal() and pass them onto loadVectorConstant().

Support for fp128 constants in the presence of FeatureVectorEnhancements1
(z14) has been added.

Review: Ulrich Weigand
https://reviews.llvm.org/D58270

llvm-svn: 354896

2019-02-26 16:47:59 +00:00

Jonas Paulsson

8cda83a5db

[SystemZ] Wait with VGBM selection until after DAGCombine2.

Don't lower BUILD_VECTORs to BYTE_MASK, but instead expose the BUILD_VECTORs
to the DAGCombiner and select them to VGBM in Select(). This allows the
DAGCombiner to understand the constant vector values.

For floating point, only all-zeros vectors are now generated with VGBM, as it
turned out to be somewhat complicated to handle any arbitrary constants,
while in practice this is very rare and hardly needed.

The SystemZ ISD opcodes z_byte_mask, z_vzero and z_vones have been removed.

Review: Ulrich Weigand
https://reviews.llvm.org/D57152

llvm-svn: 353325

2019-02-06 18:59:19 +00:00

Ulrich Weigand

cd808237b2

[SystemZ] Add CodeGen support for v2f64

This adds ABI and CodeGen support for the v2f64 type, which is natively
supported by z13 instructions.

Based on a patch by Richard Sandiford.

llvm-svn: 236522

2015-05-05 19:26:48 +00:00

3 Commits