Added by Alexander Kamkin almost 7 years ago. Updated almost 7 years ago.
100%
Description
There is a simpler way to load zero.
ori r8, r0, 0x0
dsll r8, r8, 16
ori r8, r8, 0x0
dsll r8, r8, 16
ori r8, r8, 0x0
dsll r8, r8, 16
ori r8, r8, 0x0
I could't repeat this bug.
Use: preparators_test.rb
prepare t1, -1
trace "prepare -1 in t1 = %x", gpr_observer(9)
prepare t1, 0
trace "prepare 0 in t1 = %x", gpr_observer(9)
prepare t1, -2
trace "prepare -2 in t1 = %x", gpr_observer(9)
prepare t2, 0xFF120000
trace "prepare 0xFF120000 in t2 = %x", gpr_observer(10)
Result:
Run preparators: 0xffffffffa0004024 nor r9, r0, r0 prepare -1 in t1 = ffffffffffffffff 0xffffffffa0004028 or r9, r0, r0 prepare 0 in t1 = 0 0xffffffffa000402c lui r9, 0xffff 0xffffffffa0004030 ori r9, r9, 0xfffe prepare -2 in t1 = fffffffffffffffe 0xffffffffa0004034 ori r10, r0, 0xff12 0xffffffffa0004038 dsll r10, r10, 16 prepare 0xFF120000 in t2 = ff120000