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+ DebugMsg based debugging for the mips(el) assembler optimizer

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git-svn-id: trunk@35890 -
This commit is contained in:
florian 2017-04-22 09:36:44 +00:00
parent 8983879aeb
commit 6af656aaed
1 changed files with 22 additions and 1 deletions
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23
compiler/mips/aoptcpu.pas
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@ -25,6 +25,8 @@ unit aoptcpu;
{$i fpcdefs.inc}
{ $define DEBUG_AOPTCPU}
Interface
uses
@ -44,6 +46,9 @@ unit aoptcpu;
procedure PeepHoleOptPass2; override;
function RegLoadedWithNewValue(reg : tregister; hp : tai) : boolean; override;
function InstructionLoadsFromReg(const reg : TRegister; const hp : tai) : boolean; override;
{ outputs a debug message into the assembler file }
procedure DebugMsg(const s: string; p: tai);
End;
Implementation
@ -130,7 +135,19 @@ unit aoptcpu;
end;
function TCpuAsmOptimizer.InstructionLoadsFromReg(const reg: TRegister; const hp: tai): boolean;
{$ifdef DEBUG_AOPTCPU}
procedure TCpuAsmOptimizer.DebugMsg(const s: string;p : tai);
begin
asml.insertbefore(tai_comment.Create(strpnew(s)), p);
end;
{$else DEBUG_AOPTCPU}
procedure TCpuAsmOptimizer.DebugMsg(const s: string;p : tai);inline;
begin
end;
{$endif DEBUG_AOPTCPU}
function TCpuAsmOptimizer.InstructionLoadsFromReg(const reg: TRegister; const hp: tai): boolean;
var
p: taicpu;
i: longint;
@ -258,6 +275,7 @@ unit aoptcpu;
{ finally get rid of the mov }
taicpu(p).loadreg(0,taicpu(next).oper[0]^.reg);
DebugMsg('Peephole: Move removed 1',next);
asml.remove(next);
next.free;
result:=true;
@ -280,6 +298,7 @@ unit aoptcpu;
assigned(FindRegAlloc(taicpu(p).oper[0]^.reg,tai(p.next))) then
begin
taicpu(p).loadreg(0,taicpu(next).oper[0]^.reg);
DebugMsg('Peephole: Move removed 2',next);
asml.remove(next);
next.free;
result:=true;
@ -299,6 +318,7 @@ unit aoptcpu;
if result then
begin
next.loadreg(0,taicpu(p).oper[1]^.reg);
DebugMsg('Peephole: Move removed 3',p);
asml.remove(p);
p.free;
p:=next;
@ -317,6 +337,7 @@ unit aoptcpu;
if result then
begin
next.oper[1]^.ref^.base:=taicpu(p).oper[1]^.reg;
DebugMsg('Peephole: Move removed 4',p);
asml.remove(p);
p.free;
p:=next;