John Dias wrote:
Wed Mar 25 09:38:15 PDT 2009 [email protected]
* Better handling of node parameter in calling conventions
- Previously, the node was taken as a parameter, then ignored,
for static closures. Goofy. Now, the vestigial node parameters
are gone.
M ./compiler/cmm/CmmCallConv.hs -4 +3
M ./compiler/cmm/CmmProcPointZ.hs -3 +10
M ./compiler/cmm/MkZipCfgCmm.hs -2
M ./compiler/codeGen/StgCmmLayout.hs -3 +7
I presume for a top-level function you still reserve R1, even though
nothing is passed in it? The AutoApply code in the RTS assumes this:
regardless of whether the function is top-level or not, the arguments are
allocated into R2 and up. This means that for the common case of a call to
an unknown function with the correct number of arguments, we can jump
directly to the function's entry point without having to shuffle the
arguments around.
Cheers,
Simon
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