Re: inline-asm/10857: Inlining a function with inline-asm: "error: impossible constraint in `asm'"
| Newsgroups | gmane.comp.gcc.prs,gmane.comp.gcc.bugs |
|---|---|
| Message-ID | <[email protected]> |
Synopsis: Inlining a function with inline-asm: "error: impossible constraint in `asm'"
State-Changed-From-To: open->closed
State-Changed-By: cae
State-Changed-When: Mon May 19 12:23:16 2003
State-Changed-Why:
Not a bug. An immediate value must be a compile time constant. A
procedure parameter is definitly NOT a compile time constant. gcc
can deduce its value for an inline function if certain optimizations
are done. You can request these optimizations with the various -O
flags and in this case the code compiles. Note that there is no
guarantee that this will remain true in the future.
Also note that the `I' constraint has this description on the avr
architecture:
| `I'
| Constant greater than -1, less than 64
regards Christian
http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=10857