Compiler considerations Post: 302367540

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Top Forums Programming Compiler considerations Post 302367540 by shamrock on Tuesday 3rd of November 2009 02:26:06 AM

11-03-2009

Registered User

Quote:

Originally Posted by MrUser

Hi this is rather basic question but to answer and understand the problem nedded expert.

compilers are OS dependent but OS may use any processor

Compilers are also MPU specific.

Quote:

Originally Posted by MrUser

how the compilers are able to generate code for different processors

They most likely have a database of the instruction set of each mpu.

Quote:

Originally Posted by MrUser

just consider the below scenario:

Code:

 
Compilers:              dev c/VC++                 gcc                  turbo 
 
OS:                        windows                    linux                  DOS 
 
Processors:                              intel/motorola/AMD/celeron

any processor i can use for any system.

if we consider gcc, it can generate code for intel or motorola or AMD on some other OS.
how its achieving this.

By knowing the instruction set of each mpu...easier for a software to remember but not for a programmer.

Quote:

Originally Posted by MrUser

what are the issues ( related to portability ) considered during the design of the compiler?

will they specify the set of processors that the compiler can generate the code for?

Yes they do.

Quote:

Originally Posted by MrUser

if so, they need to add the code for any newly invented processor.

Yes that would be called a newer version of the compiler.

shamrock

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