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+ implement TCpuAsmOptimizer.RegLoadedWithNewValue for x86-64, resolves issue #29527

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git-svn-id: trunk@33525 -
This commit is contained in:
florian 2016-04-15 21:27:06 +00:00
parent f576b0c01b
commit f634387394
1 changed files with 37 additions and 2 deletions
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39
compiler/x86_64/aoptcpu.pas
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@ -27,11 +27,12 @@ unit aoptcpu;
interface interface
uses cpubase, aasmtai, aopt, aoptcpub; uses cgbase, cpubase, aasmtai, aopt, aoptcpub;
type type
TCpuAsmOptimizer = class(TAsmOptimizer) TCpuAsmOptimizer = class(TAsmOptimizer)
function PeepHoleOptPass1Cpu(var p: tai): boolean; override; function PeepHoleOptPass1Cpu(var p: tai): boolean; override;
function RegLoadedWithNewValue(reg : tregister; hp : tai) : boolean; override;
end; end;
implementation implementation
@ -40,7 +41,7 @@ uses
globtype, globals, globtype, globals,
cutils, cutils,
verbose, verbose,
cgbase, cgutils, cgutils,
aoptobj, aoptobj,
aasmbase, aasmdata, aasmcpu, aasmbase, aasmdata, aasmcpu,
aoptx86, aoptx86,
@ -65,6 +66,40 @@ begin
end; end;
function TCpuAsmOptimizer.RegLoadedWithNewValue(reg: tregister; hp: tai): boolean;
var
p: taicpu;
begin
if not assigned(hp) or
(hp.typ <> ait_instruction) then
begin
Result := false;
exit;
end;
p := taicpu(hp);
Result :=
(((p.opcode = A_MOV) or
(p.opcode = A_MOVZX) or
(p.opcode = A_MOVSX) or
(p.opcode = A_LEA) or
(p.opcode = A_VMOVSS) or
(p.opcode = A_VMOVSD) or
(p.opcode = A_VMOVQ) or
(p.opcode = A_MOVSS) or
(p.opcode = A_MOVSD) or
(p.opcode = A_MOVQ)) and
(p.oper[1]^.typ = top_reg) and
(getsupreg(p.oper[1]^.reg) = getsupreg(reg)) and
((p.oper[0]^.typ = top_const) or
((p.oper[0]^.typ = top_reg) and
(getsupreg(p.oper[0]^.reg) <> getsupreg(reg))) or
((p.oper[0]^.typ = top_ref) and
not RegInRef(reg,p.oper[0]^.ref^)))) or
((p.opcode = A_POP) and
(getsupreg(p.oper[0]^.reg) = getsupreg(reg)));
end;
function TCpuAsmOptimizer.PeepHoleOptPass1Cpu(var p: tai): boolean; function TCpuAsmOptimizer.PeepHoleOptPass1Cpu(var p: tai): boolean;
var var
hp1, hp2: tai; hp1, hp2: tai;