fabi/Xenia-Canary
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(air quotes) "register allocation" without spills.

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This commit is contained in:
Ben Vanik
2014-01-25 23:36:59 -08:00
parent c4d6c7a526
commit c74f35552a
7 changed files with 177 additions and 119 deletions
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5
src/alloy/backend/x64/x64_emitter.h
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@@ -112,6 +112,8 @@ public:
GetRegBit(r0) | GetRegBit(r1) | GetRegBit(r2) | GetRegBit(r3));
}
void EvictStaleRegs();
void FindFreeRegs(hir::Value* v0, uint32_t& v0_idx, uint32_t v0_flags);
void FindFreeRegs(hir::Value* v0, uint32_t& v0_idx, uint32_t v0_flags,
hir::Value* v1, uint32_t& v1_idx, uint32_t v1_flags);
@@ -134,6 +136,8 @@ public:
static uint32_t GetRegBit(const Xbyak::Reg64& r) { return 1 << r.getIdx(); }
static uint32_t GetRegBit(const Xbyak::Xmm& r) { return 1 << (16 + r.getIdx()); }
hir::Instr* Advance(hir::Instr* i);
void MarkSourceOffset(hir::Instr* i);
private:
@@ -154,6 +158,7 @@ private:
// Current register values.
hir::Value* reg_values[32];
} reg_state_;
hir::Instr* current_instr_;
size_t source_map_count_;
Arena source_map_arena_;