Commit Graph

2 Commits

Author SHA1 Message Date
Matheus Almeida 595fcab2d0 [mips] Implement jr.hb and jalr.hb (Jump Register and Jump and Link Register with Hazard Barrier).
Summary: These instructions are available in ISAs >= mips32/mips64. For mips32r6/mips64r6, jr.hb has a new encoding format.

Reviewers: dsanders

Reviewed By: dsanders

Differential Revision: http://reviews.llvm.org/D4019

llvm-svn: 210654
2014-06-11 15:05:56 +00:00
Daniel Sanders e92ab94d4a [mips] Test that IAS for -mcpu=mips5 does not accept MIPS64 insns and -mcpu=mips(5|64) does not accept MIPS64r2
Summary:
To limit the number of tests required, only one 64-bit ISA prior to MIPS64 are tested.

rdhwr has been deliberately left without an ISA annotation for now. This is
because the assembler and CodeGen disagree on when the instruction is
available. Strictly speaking, it is only available in MIPS32r2 and
MIPS64r2. However, it is emulated by a kernel trap on earlier ISA's and is
necessary for TLS so CodeGen should emit it on older ISA's too.

Depends on D3697

Reviewers: vmedic

Reviewed By: vmedic

Differential Revision: http://reviews.llvm.org/D3698

llvm-svn: 208785
2014-05-14 15:35:03 +00:00