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tcg-ppc64: Merge ppc32 shifts 

Tested-by: Tom Musta <tommusta@gmail.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2014-03-26 18:10:43 -07:00
parent 8fa391a011
commit a757e1eef0
1 changed files with 32 additions and 8 deletions
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40
tcg/ppc64/tcg-target.c
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@ -542,6 +542,7 @@ static void tcg_out_mov(TCGContext *s, TCGType type, TCGReg ret, TCGReg arg)
static inline void tcg_out_rld(TCGContext *s, int op, TCGReg ra, TCGReg rs,
int sh, int mb)
{
assert(TCG_TARGET_REG_BITS == 64);
sh = SH(sh & 0x1f) | (((sh >> 5) & 1) << 1);
mb = MB64((mb >> 5) | ((mb << 1) & 0x3f));
tcg_out32(s, op | RA(ra) | RS(rs) | sh | mb);
@ -558,11 +559,21 @@ static inline void tcg_out_ext32u(TCGContext *s, TCGReg dst, TCGReg src)
tcg_out_rld(s, RLDICL, dst, src, 0, 32);
}
static inline void tcg_out_shli32(TCGContext *s, TCGReg dst, TCGReg src, int c)
{
tcg_out_rlw(s, RLWINM, dst, src, c, 0, 31 - c);
}
static inline void tcg_out_shli64(TCGContext *s, TCGReg dst, TCGReg src, int c)
{
tcg_out_rld(s, RLDICR, dst, src, c, 63 - c);
}
static inline void tcg_out_shri32(TCGContext *s, TCGReg dst, TCGReg src, int c)
{
tcg_out_rlw(s, RLWINM, dst, src, 32 - c, c, 31);
}
static inline void tcg_out_shri64(TCGContext *s, TCGReg dst, TCGReg src, int c)
{
tcg_out_rld(s, RLDICL, dst, src, 64 - c, c);
@ -674,6 +685,7 @@ static void tcg_out_andi64(TCGContext *s, TCGReg dst, TCGReg src, uint64_t c)
{
int mb, me;
assert(TCG_TARGET_REG_BITS == 64);
if ((c & 0xffff) == c) {
tcg_out32(s, ANDI | SAI(src, dst, c));
return;
@ -786,6 +798,7 @@ static inline void tcg_out_ld(TCGContext *s, TCGType type, TCGReg ret,
{
int opi, opx;
assert(TCG_TARGET_REG_BITS == 64 || type == TCG_TYPE_I32);
if (type == TCG_TYPE_I32) {
opi = LWZ, opx = LWZX;
} else {
@ -799,6 +812,7 @@ static inline void tcg_out_st(TCGContext *s, TCGType type, TCGReg arg,
{
int opi, opx;
assert(TCG_TARGET_REG_BITS == 64 || type == TCG_TYPE_I32);
if (type == TCG_TYPE_I32) {
opi = STW, opx = STWX;
} else {
@ -887,8 +901,13 @@ static void tcg_out_cmp(TCGContext *s, int cond, TCGArg arg1, TCGArg arg2,
static void tcg_out_setcond_eq0(TCGContext *s, TCGType type,
TCGReg dst, TCGReg src)
{
tcg_out32(s, (type == TCG_TYPE_I64 ? CNTLZD : CNTLZW) | RS(src) | RA(dst));
tcg_out_shri64(s, dst, dst, type == TCG_TYPE_I64 ? 6 : 5);
if (type == TCG_TYPE_I32) {
tcg_out32(s, CNTLZW | RS(src) | RA(dst));
tcg_out_shri32(s, dst, dst, 5);
} else {
tcg_out32(s, CNTLZD | RS(src) | RA(dst));
tcg_out_shri64(s, dst, dst, 6);
}
}
static void tcg_out_setcond_ne0(TCGContext *s, TCGReg dst, TCGReg src)
@ -926,6 +945,8 @@ static void tcg_out_setcond(TCGContext *s, TCGType type, TCGCond cond,
{
int crop, sh;
assert(TCG_TARGET_REG_BITS == 64 || type == TCG_TYPE_I32);
/* Ignore high bits of a potential constant arg2. */
if (type == TCG_TYPE_I32) {
arg2 = (uint32_t)arg2;
@ -938,7 +959,7 @@ static void tcg_out_setcond(TCGContext *s, TCGType type, TCGCond cond,
tcg_out_setcond_eq0(s, type, arg0, arg1);
return;
case TCG_COND_NE:
if (type == TCG_TYPE_I32) {
if (TCG_TARGET_REG_BITS == 64 && type == TCG_TYPE_I32) {
tcg_out_ext32u(s, TCG_REG_R0, arg1);
arg1 = TCG_REG_R0;
}
@ -950,8 +971,11 @@ static void tcg_out_setcond(TCGContext *s, TCGType type, TCGCond cond,
/* FALLTHRU */
case TCG_COND_LT:
/* Extract the sign bit. */
tcg_out_rld(s, RLDICL, arg0, arg1,
type == TCG_TYPE_I64 ? 1 : 33, 63);
if (type == TCG_TYPE_I32) {
tcg_out_shri32(s, arg0, arg1, 31);
} else {
tcg_out_shri64(s, arg0, arg1, 63);
}
return;
default:
break;
@ -991,7 +1015,7 @@ static void tcg_out_setcond(TCGContext *s, TCGType type, TCGCond cond,
case TCG_COND_NE:
arg1 = tcg_gen_setcond_xor(s, arg1, arg2, const_arg2);
/* Discard the high bits only once, rather than both inputs. */
if (type == TCG_TYPE_I32) {
if (TCG_TARGET_REG_BITS == 64 && type == TCG_TYPE_I32) {
tcg_out_ext32u(s, TCG_REG_R0, arg1);
arg1 = TCG_REG_R0;
}
@ -1935,14 +1959,14 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc, const TCGArg *args,
case INDEX_op_shl_i32:
if (const_args[2]) {
tcg_out_rlw(s, RLWINM, args[0], args[1], args[2], 0, 31 - args[2]);
tcg_out_shli32(s, args[0], args[1], args[2]);
} else {
tcg_out32(s, SLW | SAB(args[1], args[0], args[2]));
}
break;
case INDEX_op_shr_i32:
if (const_args[2]) {
tcg_out_rlw(s, RLWINM, args[0], args[1], 32 - args[2], args[2], 31);
tcg_out_shri32(s, args[0], args[1], args[2]);
} else {
tcg_out32(s, SRW | SAB(args[1], args[0], args[2]));
}