[LLVMdev] constant pool in large functions

[Lauro Ramos Venancio]

I'm facing a problem with constant pool in large functions.

The LLVM prints constant pool at the beginning of functions.

In large functions loads can be far from constant pool. GCC resolves this
situations by spreading constants throughtout functions. A C test and the
code generated by LLVM and GCC are attached.

As you can see in the following error the ldr is too far from constant:

$ arm-linux-gnueabi-as teste-llvm.s
teste-llvm.s: Assembler messages:  teste-llvm.s:1039:
Error: bad immediate value for offset (4120)

Any ideas?


Lauro
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