Compiling device, computer-readable recording medium on which a compiling program is recorded and a compiling method

• US 20040194071A1
• Filed: 04/07/2004
• Published: 09/30/2004
• Est. Priority Date: 07/09/1999
• Status: Abandoned Application

• Current Assignee: Akira Tanaka
• Original Assignee: Akira Tanaka
• Inventors: Tanaka, Akira
• Application Number:
  US10/819,595
• Publication Number:
  US 20040194071A1
• Time in Patent Office: Days
• US Class Current: 717/136
• CPC Class Codes: G06F 8/441 Register allocation; Assignment of physical memory space to logical memory space

Abstract

Formal parameters which are to use registers are replaced with variables generated inside a compiler. Then, if a variable allocated to a register has a live range (lifetime) that includes an inline assembly subroutine, the variable is allocated a register that differs from the registers updated during the inline assembly subroutine.

Claims

1-12. -12. (Cancelled)

13. A compiling device that translates a program including an assembler statement section into an object instruction sequence, the compiling device comprising:

a variable detecting means for detecting a variable whose live range overlaps the assembler statement section; and

a resource allocating means for allocating a resource different from a resource to be used in the assembler statement section to the variable whose live range overlaps the assembler statement section.

14. The compiling device of claim 13, wherein said variable detecting means detects a variable whose live range spreads over an entire assembler statement section.

15. The compiling device of claim 13, wherein said resource allocating means allocates a resource different from the one which has been used in the assembler statement section.

16. The compiling device of claim 13, wherein said resource allocating means allocates a resource different from the one to be allocated to a temporary variable in the assembler statement section.

17. The compiling device of claim 13, further comprising:

a code generating means for translating the program into an optimized object code,

wherein the assembler statement section is not optimized by said code generating means.

18. A compiling device that translates a program including an assembler statement section into an object instruction sequence, the compiling device comprising:

a variable detecting unit which detects a variable whose live range overlaps the assembler statement section; and

a resource allocating unit for allocating a resource different from a resource to be used in the assembler statement section to the variable whose live range overlaps the assembler statement section.

19. A compiling device of claim 18, wherein said variable detecting unit detects a variable whose live range spreads over an entire assembler statement section.

20. The compiling device of claim 19, wherein said resource allocating means allocates a resource different from the one which has been used in the assembler statement section.

21. The compiling device of claim 20, wherein said resource allocating means allocates a resource different from the one to be allocated to a temporary variable in the assembler statement section.

22. The compiling device of claim 20, further comprising:

a code generating unit for translating the program into an optimized object code,

wherein the assembler statement section is not optimized by said code generating unit.

23. A compiling method that translates a program including an assembler statement section into an object instruction sequence, the compiling method comprising the steps of:

a detecting step for detecting a variable whose live range overlaps the assembler statement section; and

an allocating step for allocating a resource different from a resource to be used in the assembler statement section to the variable whose live range overlaps the assembler statement section.

24. The compiling method of claim 23, wherein said detecting step detects a variable whose live range spreads over an entire assembler statement section.

25. The compiling method of claim 23, wherein said allocating step allocates a resource different from the one which has been used in the assembler statement section.

26. The compiling method of claim 23, wherein said allocating step allocates a resource different from the one to be allocated to a temporary variable in the assembler statement section.

27. The compiling method of claim 23, further comprising:

a generating step for translating the program into an optimized object code,

wherein the assembler statement section is not optimized by said generating step.