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llvm-mirror/test/MC/ARM/mve-vmov-lane.s
Simon Tatham bc0266a9ee [ARM] Add MVE vector bit-operations (register inputs).
This includes all the obvious bitwise operations (AND, OR, BIC, ORN,
MVN) in register-to-register forms, and the immediate forms of
AND/OR/BIC/ORN; byte-order reverse instructions; and the VMOVs that
access a single lane of a vector.

Some of those VMOVs (specifically, the ones that access a 32-bit lane)
share an encoding with existing instructions that were disassembled as
accessing half of a d-register (e.g. `vmov.32 r0, d1[0]`), but in
8.1-M they're now written as accessing a quarter of a q-register (e.g.
`vmov.32 r0, q0[2]`). The older syntax is still accepted by the
assembler.

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

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

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D62673

llvm-svn: 363838
2019-06-19 16:43:53 +00:00

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ArmAsm

// RUN: not llvm-mc -triple=thumbv8m.main -mattr=+fp-armv8 -show-encoding < %s 2>%t | FileCheck %s --check-prefix=V80M
// RUN: FileCheck %s < %t --check-prefix=V80M-ERROR
// RUN: llvm-mc -triple=thumbv8.1m.main -mattr=+fp-armv8 -show-encoding < %s 2>%t
// RUN: llvm-mc -triple=thumbv8.1m.main -mattr=+mve -show-encoding < %s 2>%t
// v8.1M added the Q register syntax for this instruction. The v8.1M spec does
// not list the D register syntax as valid, but we accept it as an extension to
// make porting code from v8.0M to v8.1M easier.
vmov.32 r0, d1[0]
// V80M: vmov.32 r0, d1[0] @ encoding: [0x11,0xee,0x10,0x0b]
// V81M: vmov.32 r0, d1[0] @ encoding: [0x11,0xee,0x10,0x0b]
vmov.32 r0, q0[2]
// V80M-ERROR: :[[@LINE-1]]:{{[0-9]+}}: error: instruction requires: armv8.1m.main with FP or MVE
// V81M: vmov.32 r0, q0[2] @ encoding: [0x11,0xee,0x10,0x0b]