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Add license banner to AST/RandstructSeed.h #48

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connorkuehl opened this issue Mar 15, 2019 · 0 comments
Open

Add license banner to AST/RandstructSeed.h #48

connorkuehl opened this issue Mar 15, 2019 · 0 comments
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revision This issue addresses a comment on our official RFC patche set

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@connorkuehl
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It is missing, but should be there.
@connorkuehl connorkuehl added the revision This issue addresses a comment on our official RFC patche set label Mar 15, 2019
connorkuehl pushed a commit that referenced this issue Jul 20, 2019
@miyuki
[ARM] Add <saturate> operand to SQRSHRL and UQRSHLL
0b001f9 
Summary:
According to the new Armv8-M specification
https://static.docs.arm.com/ddi0553/bh/DDI0553B_h_armv8m_arm.pdf the
instructions SQRSHRL and UQRSHLL now have an additional immediate
operand <saturate>. The new assembly syntax is:

SQRSHRL<c> RdaLo, RdaHi, #<saturate>, Rm
UQRSHLL<c> RdaLo, RdaHi, #<saturate>, Rm

where <saturate> can be either 64 (the existing behavior) or 48, in
that case the result is saturated to 48 bits.

The new operand is encoded as follows:
  llvm#64 Encoded as sat = 0
  #48 Encoded as sat = 1
sat is bit 7 of the instruction bit pattern.

This patch adds a new assembler operand class MveSaturateOperand which
implements parsing and encoding. Decoding is implemented in
DecodeMVEOverlappingLongShift.

Reviewers: ostannard, simon_tatham, t.p.northover, samparker, dmgreen, SjoerdMeijer

Reviewed By: simon_tatham

Subscribers: javed.absar, kristof.beyls, hiraditya, pbarrio, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D64810

llvm-svn: 366555
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