Displaying 4 results from an estimated 4 matches for "int_vararg".
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2007 Apr 02
2
[LLVMdev] Declaration of a va_list should be an intrinsic?
Hi everyone,
Currently, when declaring a va_list in llvm, one only needs to do:
%ap = alloca i8 * (Reference : llvm/docs/LangRef.html#int_varargs)
This is OK for x86 and PPC/Darwin ABI because a va_list in these architectures is
just a pointer to the stack. The va_start intrinsic just initializes where
the pointer points at in the stack. I do not know how the other backends operate,
but I suppose it's the same.
However, on the PPC/ELF...
2007 Apr 02
0
[LLVMdev] Declaration of a va_list should be an intrinsic?
On 4/2/07, Nicolas Geoffray <nicolas.geoffray at lip6.fr> wrote:
> Hi everyone,
>
> Currently, when declaring a va_list in llvm, one only needs to do:
>
> %ap = alloca i8 * (Reference : llvm/docs/LangRef.html#int_varargs)
This example is x86 specific. alpha allocas an {sbyte*, int} (and
does so in llvm-gcc). What the type of the alloca to use is requires
the frontend to know the abi of the backend. Even with an intrinsic
for allocating a va_list, you have the problem of what type should be
returned.
> Ther...
2003 May 08
0
[LLVMdev] New support for variable argument functions & intrinsic functions
...t from compiling "any old" C program.
Specifically, support has been added for the C <stdarg.h> header.
This involved the addition of three new intrinsics and a new LLVM
va_arg instruction. These are documented here:
http://llvm.cs.uiuc.edu/docs/LangRef.html#int_varargs
http://llvm.cs.uiuc.edu/docs/LangRef.html#i_va_arg
Support for variable argument functions has been added to LLI, the C
backend, and the X86 JIT. The _new_ C front-end also generates
these correctly. A testcase has been checked in here:
test/Programs/SingleSource/Un...
2007 Apr 03
2
[LLVMdev] Declaration of a va_list should be an intrinsic?
Hi Andrew,
Andrew Lenharth wrote:
> On 4/2/07, Nicolas Geoffray <nicolas.geoffray at lip6.fr> wrote:
>
>> Hi everyone,
>>
>> Currently, when declaring a va_list in llvm, one only needs to do:
>>
>> %ap = alloca i8 * (Reference : llvm/docs/LangRef.html#int_varargs)
>>
>
> This example is x86 specific. alpha allocas an {sbyte*, int} (and
> does so in llvm-gcc). What the type of the alloca to use is requires
> the frontend to know the abi of the backend. Even with an intrinsic
> for allocating a va_list, you have the problem of wh...