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mov_a_or
2018 Sep 20
2
Errononous scheduling of COPY instruction.
...ruction scheduling problem that I cannot further investigate by myself... Could someone give me some clues?
After Instruction selection, here is part of the generated instruction.
NOP
MOV_AB_ro @s1, %fab_roff0
%6:fpuaoffsetclass = COPY %fab_roff0; FPUaOffsetClass:%6
MOV_A_oo %6, def %5; FPUaOffsetClass:%6,%5
MOVSUTO_A_iSLo 24575, def %7; FPUaOffsetClass:%7
The order of instruction is very important: the COPY shall take place after the MOV_AB_ro!
But during Instruction scheduling, these two instructions have been permutated!
SU(18): NOP
SU(20): %6:fpuaoff...