[llvm-commits] Fixing Bug 13662: paired register for inline asm with 64-bit data on ARM

[Weiming Zhao]

Ping .

 

Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by
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From: Weiming Zhao [mailto:weimingz at codeaurora.org] 
Sent: Monday, November 19, 2012 3:13 PM
To: 'Jakob Stoklund Olesen'; 'llvm-commits at cs.uiuc.edu';
'grosbach at apple.com'
Subject: Fixing Bug 13662: paired register for inline asm with 64-bit data
on ARM

 

Hi Jakob & Jim,

 

Sorry for keep you busy, but here is the last part of my patches. :D

It enables inline asm of ldrexd/strexd to work correctly.

 

I have to change CodeGen/SelectionDAG/InstrEmitter.cpp a litte bit because:
for the inline asm nodes, I have to put a virtual reg instead of a value
node.

And due to "untyped" type, I can't insert CopyFromReg or CopyToReg as the
framework won't find the GPRPairReg class. 

So I have to directly connect ExtractSubReg, RegSequence with a Register
SDNode.

 

Please help to review it.

 

Thanks,

Weiming

 

Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by
The Linux Foundation

 

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