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Implemented basic register allocation.

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Mainly handles 'virtual' registers at the moment (eg current and last PC values, segment override status, etc).
This commit is contained in:
SarahW 2018-06-23 19:04:36 +01:00
commit ee3f9210dc
23 changed files with 776 additions and 76 deletions
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7
src/codegen_backend_x86_defs.h
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@ -1,3 +1,6 @@
#ifndef _CODEGEN_BACKEND_X86_DEFS_H_
#define _CODEGEN_BACKEND_X86_DEFS_H_
#define REG_EAX 0
#define REG_ECX 1
#define REG_EDX 2
@ -6,3 +9,7 @@
#define REG_EBP 5
#define REG_ESI 6
#define REG_EDI 7
#define CODEGEN_HOST_REGS 3
#endif