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tcg: Merge INDEX_op_muluh_{i32,i64}

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Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2025-01-07 10:36:24 -08:00
parent 937246f2ee
commit aa28c9ef8e
5 changed files with 22 additions and 25 deletions
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2
docs/devel/tcg-ops.rst
View file

@ -591,7 +591,7 @@ Multiword arithmetic support
* - mulsh_i32/i64 *t0*, *t1*, *t2*
muluh_i32/i64 *t0*, *t1*, *t2*
muluh *t0*, *t1*, *t2*
- | Provide the high part of a signed or unsigned multiply, respectively.
|

3
include/tcg/tcg-opc.h
View file

@ -44,6 +44,7 @@ DEF(and, 1, 2, 0, TCG_OPF_INT)
DEF(andc, 1, 2, 0, TCG_OPF_INT)
DEF(eqv, 1, 2, 0, TCG_OPF_INT)
DEF(mul, 1, 2, 0, TCG_OPF_INT)
DEF(muluh, 1, 2, 0, TCG_OPF_INT)
DEF(nand, 1, 2, 0, TCG_OPF_INT)
DEF(neg, 1, 1, 0, TCG_OPF_INT)
DEF(nor, 1, 2, 0, TCG_OPF_INT)
@ -89,7 +90,6 @@ DEF(add2_i32, 2, 4, 0, 0)
DEF(sub2_i32, 2, 4, 0, 0)
DEF(mulu2_i32, 2, 2, 0, 0)
DEF(muls2_i32, 2, 2, 0, 0)
DEF(muluh_i32, 1, 2, 0, 0)
DEF(mulsh_i32, 1, 2, 0, 0)
DEF(brcond2_i32, 0, 4, 2, TCG_OPF_BB_END | TCG_OPF_COND_BRANCH)
DEF(setcond2_i32, 1, 4, 1, 0)
@ -151,7 +151,6 @@ DEF(add2_i64, 2, 4, 0, 0)
DEF(sub2_i64, 2, 4, 0, 0)
DEF(mulu2_i64, 2, 2, 0, 0)
DEF(muls2_i64, 2, 2, 0, 0)
DEF(muluh_i64, 1, 2, 0, 0)
DEF(mulsh_i64, 1, 2, 0, 0)
#define DATA64_ARGS (TCG_TARGET_REG_BITS == 64 ? 1 : 2)

19
tcg/optimize.c
View file

@ -419,7 +419,8 @@ static bool tcg_opt_gen_movi(OptContext *ctx, TCGOp *op,
return tcg_opt_gen_mov(ctx, op, dst, arg_new_constant(ctx, val));
}
static uint64_t do_constant_folding_2(TCGOpcode op, uint64_t x, uint64_t y)
static uint64_t do_constant_folding_2(TCGOpcode op, TCGType type,
uint64_t x, uint64_t y)
{
uint64_t l64, h64;
@ -541,14 +542,16 @@ static uint64_t do_constant_folding_2(TCGOpcode op, uint64_t x, uint64_t y)
case INDEX_op_extrh_i64_i32:
return (uint64_t)x >> 32;
case INDEX_op_muluh_i32:
return ((uint64_t)(uint32_t)x * (uint32_t)y) >> 32;
case INDEX_op_muluh:
if (type == TCG_TYPE_I32) {
return ((uint64_t)(uint32_t)x * (uint32_t)y) >> 32;
}
mulu64(&l64, &h64, x, y);
return h64;
case INDEX_op_mulsh_i32:
return ((int64_t)(int32_t)x * (int32_t)y) >> 32;
case INDEX_op_muluh_i64:
mulu64(&l64, &h64, x, y);
return h64;
case INDEX_op_mulsh_i64:
muls64(&l64, &h64, x, y);
return h64;
@ -580,7 +583,7 @@ static uint64_t do_constant_folding_2(TCGOpcode op, uint64_t x, uint64_t y)
static uint64_t do_constant_folding(TCGOpcode op, TCGType type,
uint64_t x, uint64_t y)
{
uint64_t res = do_constant_folding_2(op, x, y);
uint64_t res = do_constant_folding_2(op, type, x, y);
if (type == TCG_TYPE_I32) {
res = (int32_t)res;
}
@ -2967,7 +2970,7 @@ void tcg_optimize(TCGContext *s)
done = fold_mul(&ctx, op);
break;
CASE_OP_32_64(mulsh):
CASE_OP_32_64(muluh):
case INDEX_op_muluh:
done = fold_mul_highpart(&ctx, op);
break;
CASE_OP_32_64(muls2):

10
tcg/tcg-op.c
View file

@ -1132,10 +1132,10 @@ void tcg_gen_mulu2_i32(TCGv_i32 rl, TCGv_i32 rh, TCGv_i32 arg1, TCGv_i32 arg2)
{
if (TCG_TARGET_HAS_mulu2_i32) {
tcg_gen_op4_i32(INDEX_op_mulu2_i32, rl, rh, arg1, arg2);
} else if (tcg_op_supported(INDEX_op_muluh_i32, TCG_TYPE_I32, 0)) {
} else if (tcg_op_supported(INDEX_op_muluh, TCG_TYPE_I32, 0)) {
TCGv_i32 t = tcg_temp_ebb_new_i32();
tcg_gen_op3_i32(INDEX_op_mul, t, arg1, arg2);
tcg_gen_op3_i32(INDEX_op_muluh_i32, rh, arg1, arg2);
tcg_gen_op3_i32(INDEX_op_muluh, rh, arg1, arg2);
tcg_gen_mov_i32(rl, t);
tcg_temp_free_i32(t);
} else if (TCG_TARGET_REG_BITS == 64) {
@ -2842,10 +2842,10 @@ void tcg_gen_mulu2_i64(TCGv_i64 rl, TCGv_i64 rh, TCGv_i64 arg1, TCGv_i64 arg2)
{
if (TCG_TARGET_HAS_mulu2_i64) {
tcg_gen_op4_i64(INDEX_op_mulu2_i64, rl, rh, arg1, arg2);
} else if (tcg_op_supported(INDEX_op_muluh_i64, TCG_TYPE_I64, 0)) {
} else if (tcg_op_supported(INDEX_op_muluh, TCG_TYPE_I64, 0)) {
TCGv_i64 t = tcg_temp_ebb_new_i64();
tcg_gen_op3_i64(INDEX_op_mul, t, arg1, arg2);
tcg_gen_op3_i64(INDEX_op_muluh_i64, rh, arg1, arg2);
tcg_gen_op3_i64(INDEX_op_muluh, rh, arg1, arg2);
tcg_gen_mov_i64(rl, t);
tcg_temp_free_i64(t);
} else {
@ -2868,7 +2868,7 @@ void tcg_gen_muls2_i64(TCGv_i64 rl, TCGv_i64 rh, TCGv_i64 arg1, TCGv_i64 arg2)
tcg_gen_mov_i64(rl, t);
tcg_temp_free_i64(t);
} else if (TCG_TARGET_HAS_mulu2_i64 ||
tcg_op_supported(INDEX_op_muluh_i64, TCG_TYPE_I64, 0)) {
tcg_op_supported(INDEX_op_muluh, TCG_TYPE_I64, 0)) {
TCGv_i64 t0 = tcg_temp_ebb_new_i64();
TCGv_i64 t1 = tcg_temp_ebb_new_i64();
TCGv_i64 t2 = tcg_temp_ebb_new_i64();

13
tcg/tcg.c
View file

@ -1022,8 +1022,7 @@ static const TCGOutOp * const all_outop[NB_OPS] = {
OUTOP(INDEX_op_andc, TCGOutOpBinary, outop_andc),
OUTOP(INDEX_op_eqv, TCGOutOpBinary, outop_eqv),
OUTOP(INDEX_op_mul, TCGOutOpBinary, outop_mul),
OUTOP(INDEX_op_muluh_i32, TCGOutOpBinary, outop_muluh),
OUTOP(INDEX_op_muluh_i64, TCGOutOpBinary, outop_muluh),
OUTOP(INDEX_op_muluh, TCGOutOpBinary, outop_muluh),
OUTOP(INDEX_op_nand, TCGOutOpBinary, outop_nand),
OUTOP(INDEX_op_neg, TCGOutOpUnary, outop_neg),
OUTOP(INDEX_op_nor, TCGOutOpBinary, outop_nor),
@ -4030,17 +4029,14 @@ liveness_pass_1(TCGContext *s)
}
goto do_not_remove;
case INDEX_op_mulu2_i32:
opc_new = INDEX_op_mul;
opc_new2 = INDEX_op_muluh_i32;
goto do_mul2;
case INDEX_op_muls2_i32:
opc_new = INDEX_op_mul;
opc_new2 = INDEX_op_mulsh_i32;
goto do_mul2;
case INDEX_op_mulu2_i32:
case INDEX_op_mulu2_i64:
opc_new = INDEX_op_mul;
opc_new2 = INDEX_op_muluh_i64;
opc_new2 = INDEX_op_muluh;
goto do_mul2;
case INDEX_op_muls2_i64:
opc_new = INDEX_op_mul;
@ -5430,8 +5426,7 @@ static void tcg_reg_alloc_op(TCGContext *s, const TCGOp *op)
case INDEX_op_andc:
case INDEX_op_eqv:
case INDEX_op_mul:
case INDEX_op_muluh_i32:
case INDEX_op_muluh_i64:
case INDEX_op_muluh:
case INDEX_op_nand:
case INDEX_op_nor:
case INDEX_op_or: