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Merge branch 'master' into v2.1

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This commit is contained in:
Mike Pall 2019-04-29 18:04:47 +02:00
commit 178512fab9
2 changed files with 25 additions and 23 deletions
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2
src/lj_asm.c
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@ -2130,8 +2130,8 @@ static void asm_setup_regsp(ASMState *as)
#if LJ_SOFTFP
case IR_MIN: case IR_MAX:
if ((ir+1)->o != IR_HIOP) break;
/* fallthrough */
#endif
/* fallthrough */
/* C calls evict all scratch regs and return results in RID_RET. */
case IR_SNEW: case IR_XSNEW: case IR_NEWREF: case IR_BUFPUT:
if (REGARG_NUMGPR < 3 && as->evenspill < 3)

46
src/lj_asm_arm.h
View File

@ -979,7 +979,7 @@ static ARMIns asm_fxloadins(IRIns *ir)
case IRT_I16: return ARMI_LDRSH;
case IRT_U16: return ARMI_LDRH;
case IRT_NUM: lua_assert(!LJ_SOFTFP); return ARMI_VLDR_D;
case IRT_FLOAT: if (!LJ_SOFTFP) return ARMI_VLDR_S;
case IRT_FLOAT: if (!LJ_SOFTFP) return ARMI_VLDR_S; /* fallthrough */
default: return ARMI_LDR;
}
}
@ -990,7 +990,7 @@ static ARMIns asm_fxstoreins(IRIns *ir)
case IRT_I8: case IRT_U8: return ARMI_STRB;
case IRT_I16: case IRT_U16: return ARMI_STRH;
case IRT_NUM: lua_assert(!LJ_SOFTFP); return ARMI_VSTR_D;
case IRT_FLOAT: if (!LJ_SOFTFP) return ARMI_VSTR_S;
case IRT_FLOAT: if (!LJ_SOFTFP) return ARMI_VSTR_S; /* fallthrough */
default: return ARMI_STR;
}
}
@ -1412,14 +1412,29 @@ static void asm_intop(ASMState *as, IRIns *ir, ARMIns ai)
emit_dn(as, ai^m, dest, left);
}
/* Try to drop cmp r, #0. */
static ARMIns asm_drop_cmp0(ASMState *as, ARMIns ai)
{
if (as->flagmcp == as->mcp) {
uint32_t cc = (as->mcp[1] >> 28);
as->flagmcp = NULL;
if (cc <= CC_NE) {
as->mcp++;
ai |= ARMI_S;
} else if (cc == CC_GE) {
*++as->mcp ^= ((CC_GE^CC_PL) << 28);
ai |= ARMI_S;
} else if (cc == CC_LT) {
*++as->mcp ^= ((CC_LT^CC_MI) << 28);
ai |= ARMI_S;
} /* else: other conds don't work in general. */
}
return ai;
}
static void asm_intop_s(ASMState *as, IRIns *ir, ARMIns ai)
{
if (as->flagmcp == as->mcp) { /* Drop cmp r, #0. */
as->flagmcp = NULL;
as->mcp++;
ai |= ARMI_S;
}
asm_intop(as, ir, ai);
asm_intop(as, ir, asm_drop_cmp0(as, ai));
}
static void asm_intneg(ASMState *as, IRIns *ir, ARMIns ai)
@ -1514,20 +1529,7 @@ static void asm_neg(ASMState *as, IRIns *ir)
static void asm_bitop(ASMState *as, IRIns *ir, ARMIns ai)
{
if (as->flagmcp == as->mcp) { /* Try to drop cmp r, #0. */
uint32_t cc = (as->mcp[1] >> 28);
as->flagmcp = NULL;
if (cc <= CC_NE) {
as->mcp++;
ai |= ARMI_S;
} else if (cc == CC_GE) {
*++as->mcp ^= ((CC_GE^CC_PL) << 28);
ai |= ARMI_S;
} else if (cc == CC_LT) {
*++as->mcp ^= ((CC_LT^CC_MI) << 28);
ai |= ARMI_S;
} /* else: other conds don't work with bit ops. */
}
ai = asm_drop_cmp0(as, ai);
if (ir->op2 == 0) {
Reg dest = ra_dest(as, ir, RSET_GPR);
uint32_t m = asm_fuseopm(as, ai, ir->op1, RSET_GPR);