llvm dev - Jul 2011 - [LLVMdev] Instructions that access memory @ the IR level

Hello,

I'm working with a pass that operates at the LLVM IR level.  I need to run
some statistics on instructions that access memory, and I'm wondering, at
the IR level, which instructions aside from Load and Store access memory
directly as a result of their operation?  I know on an ISA level, this
varies from arch to arch, but I'm wondering how LLVM has this set up at the
IR level.

Thank you,
Griffin Wright
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On Tue, Jul 5, 2011 at 11:47 AM, Griffin Wright <gwright215 at gmail.com>
wrote:
> Hello,
>
> I'm working with a pass that operates at the LLVM IR level.  I need to
run
> some statistics on instructions that access memory, and I'm wondering,
at
> the IR level, which instructions aside from Load and Store access memory
>
> directly as a result of their operation?  I know on an ISA level, this
> varies from arch to arch, but I'm wondering how LLVM has this set up at
the
> IR level.
If you're writing a pass, you probably want to use
Instruction::mayReadFromMemory() and Instruction::mayWriteToMemory().
If you need something more specific, you can also take a look at their
implementations (in lib/VMCore/Instruction.cpp).

-Eli