[LLVMdev] redefenition of variables in LLVM
Chris Lattner
sabre at nondot.org
Sun Dec 12 00:18:27 PST 2004
On Sun, 12 Dec 2004, Chris Lattner wrote:
> No, this is Static Single Assignment form, which means there can only be one
> assignment to a value. If you want multiple assignment, use memory (such as
> a stack location). E.g.:
>
> %t4 = alloca int
> %_t4 = add int 23 , 0
> store int %_t4, int* %t4
> %_t5 = add int %_t4 , 1
> %_t4 = add int %_t5 , 0
> store int %_t4, int* %t4
*** Sorry, of course this won't work either. If you replace the last two
lines with:
%_t4.2 = add int %_t5 , 0
store int %_t4.2, int* %t4
It should work.
-Chris
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