Re: Locking L1 cache lines in Cyrix 6x86MX CPUs

Michael Meissner (meissner@cygnus.com)
Wed, 20 May 1998 14:43:47 -0400

| As far as I know, register allocation is done at the end of the global
| optimization pass, just before code generation, using a technique called
| graph coloring - which works best when the CPU has at least 16 registers
| available, obviously not the case with x86 machines.

Not really. After register allocation is the second scheduling pass, the
delayed branch pass, peephole support and then emitting the assembler code. In
addition, GCC does NOT use graph coloring for register allocation (that method
is patented by IBM).

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