patch applied (ghc): A better x86_64 register mapping,
with more argument registers.
simonmar at microsoft.com
Tue Feb 28 10:38:39 EST 2006
Tue Feb 28 07:36:40 PST 2006 Simon Marlow <simonmar at microsoft.com>
* A better x86_64 register mapping, with more argument registers.
Now that we can handle using C argument registers as global registers,
extend the x86_64 register mapping. We now have 5 integer argument
registers, 4 float, and 2 double (all caller-saves). This results in a
reasonable speedup on x86_64.
M ./ghc/includes/MachRegs.h -32 +31
M ./ghc/rts/StgCRun.c -2 +2
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