gcc.info: RTL Declarations
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Declarations
Declaration expression codes do not represent arithmetic operations
but rather state assertions about their operands.
`(strict_low_part (subreg:M (reg:N R) 0))'
This expression code is used in only one context: as the
destination operand of a `set' expression. In addition, the
operand of this expression must be a non-paradoxical `subreg'
expression.
The presence of `strict_low_part' says that the part of the
register which is meaningful in mode N, but is not part of mode M,
is not to be altered. Normally, an assignment to such a subreg is
allowed to have undefined effects on the rest of the register when
M is less than a word.
Created Wed Sep 1 16:42:22 2004 on bee with info_to_html version 0.9.6.