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Report From: Delphi-BCB/Compiler/Delphi/BASM [ Add a report in this area ]

Report #: 98621

Status: Closed

[x64] JE/JMP instructions missing from compiled routine

Project: Delphi

Build #: 16.0.4256.43595

Version: 16.0

Submitted By: nick b

Report Type: Basic functionality failure

Date Reported: 9/6/2011 8:33:01 PM

Severity: Serious / Highly visible problem

Last Updated: 12/19/2012 7:55:05 PM

Platform: All versions

Internal Tracking #: 287475

Resolution: Fixed (Resolution Comments)

Resolved in Build: : Update 4

Duplicate of: None

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Total Votes: 5

Description

[x64]
Created the following simple in-line assembler routine. When compiling in 64 bit mode, the JE instruction is missing from the object code causing logic issues.

On the basis that this is an optimization error, I turned optimization off in the compiler options and then got a fatal internal error from the compiler
----------
...
...
36: done:
37: nop
38: end;
39:
40: procedure TForm1.Button1Click(Sender: TObject);
...
...

[DCC Fatal Error] Unit1.pas(38): F2084 Internal Error: NI16392
----------

Steps to Reproduce:

create an in-line routine like this...compile and test:

function Cmp(A, B: longint): integer;
label
  equal, done;
asm
  CMP A,B
  JE equal
  mov @Result, 1
  jmp done
equal:
  mov @Result, 0
done:
  nop
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
    ShowMessage(IntToStr(Cmp(10,11)));
end;

Workarounds

None known

Attachment

None

Comments

Tomohiro Takahashi at 9/6/2011 9:02:23 PM -

I deleted QC#98620 as Sysop. Please do not post same reports.
Thanks.

Tomohiro Takahashi at 9/6/2011 10:06:27 PM -

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