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Generate better code for && and ||.

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This commit is contained in:
Stephen Heumann 2022-07-11 21:16:18 -05:00
parent 312a3a09b9
commit 417fd1ad9c
1 changed files with 15 additions and 11 deletions
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26
Gen.pas
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@ -3796,7 +3796,7 @@ procedure GenLogic (op: icptr);
{ generate a pc_and, pc_ior, pc_bnd, pc_bor or pc_bxr }
var
lab1,lab2: integer; {label}
lab1,lab2,lab3: integer; {label}
nd: icptr; {temp node pointer}
opcode: pcodes; {operation code}
@ -3805,19 +3805,23 @@ opcode := op^.opcode;
if opcode in [pc_and,pc_ior] then begin
lab1 := GenLabel;
GenTree(op^.left);
GenNative(m_cmp_imm, immediate, 0, nil, 0);
GenImpliedForFlags(m_tax);
lab2 := GenLabel;
if opcode = pc_and then
GenNative(m_bne, relative, lab2, nil, 0)
if opcode = pc_and then begin
GenNative(m_bne, relative, lab2, nil, 0);
GenNative(m_brl, longrelative, lab1, nil, 0);
end {if}
else begin
lab3 := GenLabel;
GenNative(m_beq, relative, lab2, nil, 0);
GenNative(m_lda_imm, immediate, 1, nil, 0);
GenNative(m_brl, longrelative, lab3, nil, 0);
end; {else}
GenNative(m_brl, longrelative, lab1, nil, 0);
GenLab(lab2);
GenTree(op^.right);
GenNative(m_cmp_imm, immediate, 0, nil, 0);
GenImpliedForFlags(m_tax);
GenNative(m_beq, relative, lab1, nil, 0);
if opcode = pc_ior then
GenLab(lab3);
GenNative(m_lda_imm, immediate, 1, nil, 0);
GenLab(lab1);
end {if}
@ -3833,8 +3837,8 @@ else begin
GenImplied(m_pha);
GenTree(op^.right);
case opcode of
pc_and,pc_bnd: GenNative(m_and_s, direct, 1, nil, 0);
pc_ior,pc_bor: GenNative(m_ora_s, direct, 1, nil, 0);
pc_bnd: GenNative(m_and_s, direct, 1, nil, 0);
pc_bor: GenNative(m_ora_s, direct, 1, nil, 0);
pc_bxr: GenNative(m_eor_s, direct, 1, nil, 0);
otherwise:
Error(cge1);
@ -3844,8 +3848,8 @@ else begin
end {if}
else
case opcode of
pc_and,pc_bnd: OperA(m_and_imm, op^.right);
pc_ior,pc_bor: OperA(m_ora_imm, op^.right);
pc_bnd: OperA(m_and_imm, op^.right);
pc_bor: OperA(m_ora_imm, op^.right);
pc_bxr: OperA(m_eor_imm, op^.right);
otherwise:
Error(cge1);