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Added basic loop unrolling. Blocks that end in a JMP, LOOP or conditional branch to a previous instruction in the block will be unrolled up to 10 times.

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This commit is contained in:
SarahW 2019-03-25 19:07:51 +00:00
commit 7e099c277e
9 changed files with 594 additions and 148 deletions
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15
src/codegen_reg.h
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@ -315,7 +315,10 @@ extern ir_reg_t invalid_ir_reg;
typedef uint16_t ir_host_reg_t;
extern int max_version_refcount;
#define REG_VERSION_MAX 250
#define REG_REFCOUNT_MAX 250
static inline ir_reg_t codegen_reg_read(int reg)
{
@ -332,8 +335,10 @@ static inline ir_reg_t codegen_reg_read(int reg)
version->refcount++;
if (!version->refcount)
fatal("codegen_reg_read - refcount overflow\n");
else if (version->refcount > REG_VERSION_MAX)
else if (version->refcount > REG_REFCOUNT_MAX)
CPU_BLOCK_END();
if (version->refcount > max_version_refcount)
max_version_refcount = version->refcount;
// pclog("codegen_reg_read: %i %i %i\n", reg & IREG_REG_MASK, ireg.version, reg_version_refcount[IREG_GET_REG(ireg.reg)][ireg.version]);
return ireg;
}
@ -359,6 +364,9 @@ static inline ir_reg_t codegen_reg_write(int reg, int uop_nr)
fatal("codegen_reg_write - version overflow\n");
else if (reg_last_version[IREG_GET_REG(reg)] > REG_VERSION_MAX)
CPU_BLOCK_END();
if (reg_last_version[IREG_GET_REG(reg)] > max_version_refcount)
max_version_refcount = reg_last_version[IREG_GET_REG(reg)];
version = &reg_version[IREG_GET_REG(reg)][ireg.version];
version->refcount = 0;
version->flags = 0;
@ -367,6 +375,11 @@ static inline ir_reg_t codegen_reg_write(int reg, int uop_nr)
return ireg;
}
static inline int ir_reg_is_invalid(ir_reg_t ir_reg)
{
return (IREG_GET_REG(ir_reg.reg) == IREG_INVALID);
}
struct ir_data_t;
void codegen_reg_reset();