ping [PATCH] [MSP430] Fix PR78849: ICE on initialization of global struct containing __int20 array

[Joseph Myers]

On Wed, 2 Aug 2017, Jeff Law wrote:

> I think Joseph's suggestion for looking at partial float handling may be
> useful, though ia64's RFmode may be more interesting as it's not a
> multiple of 8 in bitsize.  IF/KF modes on the ppc port have similar
> properties.

The key issue those floating-point modes engage is the meaning of 
precision.  IFmode and KFmode have precision set to 106 and 113 to 
distinguish them.  But that's precision in the sense of number of mantissa 
bits; as normally understood in GCC, precision should be the number of 
significant bits, so 128 for both those modes (but having multiple 
different binary floating-point modes with the same precision would 
require changing how we deal with laying out long double, so the target 
specifies a mode for floating-point types rather than leaving it to be 
deduced from values such as LONG_DOUBLE_TYPE_SIZE).

-- 
Joseph S. Myers
joseph@codesourcery.com