Mikhail Maltsev 3c59f45453 [ARM] Add <saturate> operand to SQRSHRL and UQRSHLL ... 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: #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		2019-07-19 09:46:28 +00:00
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ARMAsmParser.cpp	[ARM] Add <saturate> operand to SQRSHRL and UQRSHLL	2019-07-19 09:46:28 +00:00
CMakeLists.txt
LLVMBuild.txt	[ARM] Move InstPrinter files to MCTargetDesc. NFC	2019-05-11 00:34:07 +00:00