llvm-project

Commit Graph

Author	SHA1	Message	Date
Jonas Paulsson	61f5ba5c32	[SystemZ] Implement the packed stack layout Any llvm function with the "packed-stack" attribute will be compiled to use the packed stack layout which reuses unused parts of the incoming register save area. This is needed for building the Linux kernel. Review: Ulrich Weigand https://reviews.llvm.org/D70821	2019-12-12 10:26:03 -08:00
Ulrich Weigand	49506d78e7	[SystemZ] Add CodeGen support for scalar f64 ops in vector registers The z13 vector facility includes some instructions that operate only on the high f64 in a v2f64, effectively extending the FP register set from 16 to 32 registers. It's still better to use the old instructions if the operands happen to fit though, since the older instructions have a shorter encoding. Based on a patch by Richard Sandiford. llvm-svn: 236524	2015-05-05 19:28:34 +00:00

Author

SHA1

Message

Date

Jonas Paulsson

61f5ba5c32

[SystemZ] Implement the packed stack layout

Any llvm function with the "packed-stack" attribute will be compiled to use
the packed stack layout which reuses unused parts of the incoming register
save area. This is needed for building the Linux kernel.

Review: Ulrich Weigand
https://reviews.llvm.org/D70821

2019-12-12 10:26:03 -08:00

Ulrich Weigand

49506d78e7

[SystemZ] Add CodeGen support for scalar f64 ops in vector registers

The z13 vector facility includes some instructions that operate only on the
high f64 in a v2f64, effectively extending the FP register set from 16
to 32 registers.  It's still better to use the old instructions if the
operands happen to fit though, since the older instructions have a shorter
encoding.

Based on a patch by Richard Sandiford.

llvm-svn: 236524

2015-05-05 19:28:34 +00:00

2 Commits