Commit Graph

3 Commits

Author SHA1 Message Date
Mikhail Maltsev 8dcf6fa308 [ARM] Fix a check in vmov/vmvn immediate parsing
Summary:
Currently the check is incorrect and the following invalid
instruction is accepted and incorrectly assembled:

  vmov.i32        d2, #0x00a500a6

This patch fixes the issue.

Reviewers: olista01, rengolin

Reviewed By: rengolin

Subscribers: SjoerdMeijer, javed.absar, rogfer01, llvm-commits, kristof.beyls

Differential Revision: https://reviews.llvm.org/D44460

llvm-svn: 327704
2018-03-16 12:46:49 +00:00
Oliver Stannard cd3306f62f [ARM, Asm] Add diagnostics for floating-point register operands
This adds diagnostic strings for the ARM floating-point register
classes, which will be used when these classes are expected by the
assembler, but the provided operand is not valid.

One of these, DPR, requires C++ code to select the correct error
message, as that class contains different registers depending on the
FPU. The rest can all have their diagnostic strings stored in the
tablegen decription of them.

Differential revision: https://reviews.llvm.org/D36693

llvm-svn: 315304
2017-10-10 12:35:09 +00:00
Stepan Dyatkovskiy 00dcc0f53c Fix for PR18921, "vmov" part.
Added support for bytes replication feature, so it could be GAS compatible.

E.g. instructions below:
"vmov.i32 d0, 0xffffffff"
"vmvn.i32 d0, 0xabababab"
"vmov.i32 d0, 0xabababab"
"vmov.i16 d0, 0xabab"
are incorrect, but we could deal with such cases.

For first one we should emit:
"vmov.i8 d0, 0xff"
For second one ("vmvn"):
"vmov.i8 d0, 0x54"
For last two instructions it should emit:
"vmov.i8 d0, 0xab"

P.S.: In ARMAsmParser.cpp I have also fixed few nearby style issues in old code.
Just for keeping method bodies in harmony with themselves.

llvm-svn: 207080
2014-04-24 06:03:01 +00:00