Incorrect lift of Auto-AND predicates #6
Description
The publicly available "Hexagon V5x Programmer’s Reference Manual" describes behavior for "auto-AND" predicates in section 6.2.3
If multiple compare instructions in a packet write to the same predicate register, the result is the logical AND of the individual compare results.
binja-hexagon does not seem to support this right now.
test_auto_and_predicates:
{ P0 = cmp.eq(r0,#1)
P0 = cmp.eq(r0,#2)
if (P0.new) jump:T 1f }
{ r0 = #0
jumpr r31 }
1:
{ r0 = #1
jumpr r31 }
Lifts to
...
1 @ 00020330 temp90.b = P0
2 @ 00020330 temp90.b = R0 == 1 # P0's temp written first
3 @ 00020330 temp90.b = R0 == 2 # P0's temp overwritten instead of AND'd
4 @ 00020330 if (temp90.b) then 5 else 7
...