#2700 Debug info for local variables that live in multiple iTemps

[Philipp Klaus Krause]

In current SDCC 3.6.9 #10195, there seems to be an issue with debug in for for local variables in the attached example.

While printing the value of the global unsigned long and the local
unsigned int worked well, there are problems with the local unsigned long:

Breakpoint 1, longtest () at test.c:54
54 luint = lulong & 0xfff;
(gdb) p/x lulong
$1 = 0x81500055
(gdb) step
56 lulong |= 0x55ul;
(gdb) p/x lulong
$2 = 0x81500055
(gdb) step
58 luint++;
(gdb) p/x lulong
$3 = 0x55aa55

In the compiler, the local unsigned long lives in multiple temporary
variables (iTemp5, iTemp21, iTemp9, iTemp4, iTemp13, iTemp22) during its
lifetime.

Philipp

[Philipp Klaus Krause]

It seems SDCC does not keep track of the iTemp a local
variable is decomposed into. Usually one can be found in reqv (iTemp4
in this case). But that is not enough.

Philipp