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+ Addi2Nop optimization

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This commit is contained in:
florian 2024-12-01 11:21:09 +01:00
parent 91d3746adf
commit c45d03851a
1 changed files with 16 additions and 1 deletions
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17
compiler/riscv/aoptcpurv.pas
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@ -265,6 +265,21 @@ implementation
hp1: tai; hp1: tai;
begin begin
result:=false; result:=false;
{
Get rid of
addi x, x, 0
}
if (taicpu(p).ops=3) and
(taicpu(p).oper[2]^.typ=top_const) and
(taicpu(p).oper[2]^.val=0) and
MatchOperand(taicpu(p).oper[0]^,taicpu(p).oper[1]^) then
begin
DebugMsg('Peephole Addi2Nop performed', p);
RemoveInstr(p);
result:=true;
end
{ {
Changes Changes
addi x, y, # addi x, y, #
@ -273,7 +288,7 @@ implementation
To To
addi z, y, #+# addi z, y, #+#
} }
if (taicpu(p).ops=3) and else if (taicpu(p).ops=3) and
(taicpu(p).oper[2]^.typ=top_const) and (taicpu(p).oper[2]^.typ=top_const) and
GetNextInstructionUsingReg(p, hp1, taicpu(p).oper[0]^.reg) and GetNextInstructionUsingReg(p, hp1, taicpu(p).oper[0]^.reg) and
MatchInstruction(hp1,[A_ADDI{$ifdef riscv64},A_ADDIW{$endif}]) and MatchInstruction(hp1,[A_ADDI{$ifdef riscv64},A_ADDIW{$endif}]) and