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420

answers:

1
Q: 

What JIT compilers does CLR support

I came across this quote:

"The .NET Common Language Runtime (CLR) supplies at least one JIT compiler for every NET-supported computer architecture, so the same set of CIL can be JIT-compiled and run on different architectures."

I've looked around but can't find a definitive list of the JIT compilers supported by CLR?

+1  A: 

Mainly there is one JIT compiler for every processor architecture the CLR runs on. In particular

  • x86
  • amd64
  • ia64

Less sure about the following.

  • PowerPC (XBox360)
  • ARM (Mobile devices)
JaredPar  2009-04-23 22:23:50
PowerPC for XBox 360 and ARM for PocketPC, at a guess?
Jon Skeet  2009-04-23 22:33:58
@Jon, forgot about those. I'm not familiar with the particulars of them but logically they have to exist.
JaredPar  2009-04-24 11:19:13
PPC and ARM don't necessarily exist. In case of Xbox 360, it's not possible to have JIT technically (no code can be generated at runtime). The same on some mobile platforms (e.g. iPhone, even if it's not related to .NET). So on those platforms, it's likely that .NET code uses traditional virtual machine of full "ahead of time" compilation (no JIT at runtime).
NeARAZ  2009-04-24 11:23:35
@NeARAZ: what makes you say that the Xbox 360 can't generate code at runtime? Just because user-level code isn't allowed to do so, doesn't mean that Microsoft can't create a JIT for that platform.
Joachim Sauer  2009-05-09 07:34:47
@saua, NeARAZ I'm fairly certain it does JIT on the XBox but I don't know 100% for sure.
JaredPar  2009-05-09 14:50:48

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