search for: unpedictably

> "The destination register shall not be the same as the operand > register Rm. R15 shall not be used as an operand or as the > destination register." The ARM ARM has this "Operand restriction" on MUL: Specifying the same register for <Rd> and <Rm> has UNPEDICTABLE results. > Then, for the load and store multiple instructions, LDM and STM,

Hi Chris, > On Sun, 17 Sep 2006, [UTF-8] Rafael Esp?ndola wrote: > > The ARM has a multiply instruction of the form Rd=Rm*Rs where Rd != > > Rm. How can I add this requirement to the instruction definition? > > ... > > I'd like to make the regalloc interfaces more powerful to be able to > capture this sort of thing, but I'm not very familiar with ARM.

...e: C. E. Timothy Paine Version: R version 2.4.1 (2006-12-18) OS: OS X 10.4.8 Submission from: (NULL) (130.39.127.123) When editing a script in the editor window, the following messages appear in the R console. Any further editing in the editor will generate a new line of error code. This occurs unpedictably when editing in the editor. Perhaps related is the observation that when I open an existing script, and select the text of that script, the script shifts slightly to the right. Sorry I can;t provide better info about the problem. Thanks for all of your work! tim ...............R console outpu...

Rafael Espíndola wrote: >> "The destination register shall not be the same as the operand >> register Rm. R15 shall not be used as an operand or as the >> destination register." > > The ARM ARM has this "Operand restriction" on MUL: > Specifying the same register for <Rd> and <Rm> has UNPEDICTABLE results. > >>

On Mon, 18 Sep 2006, [UTF-8] Rafael Esp?ndola wrote: >> "The destination register shall not be the same as the operand >> register Rm. R15 shall not be used as an operand or as the >> destination register." > > The ARM ARM has this "Operand restriction" on MUL: > Specifying the same register for <Rd> and <Rm> has UNPEDICTABLE