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in the x86-64 backend use lea, inc and dec where applicable in add and sub opcodes

pull/17/head
Jakob Löw 5 years ago
parent
e385fd1101
commit
f75ded9ad5
1 changed files with 56 additions and 17 deletions
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  1. 73
      jit/jit-rules-x86-64.ins

73
jit/jit-rules-x86-64.ins
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@ -925,11 +925,10 @@ JIT_OP_STORE_RELATIVE_STRUCT: ternary
} }
JIT_OP_ADD_RELATIVE: JIT_OP_ADD_RELATIVE:
[reg, imms32] -> { [reg, immzero] -> {
if($2 != 0) }
{ [=reg, reg, imms32] -> {
x86_64_add_reg_imm_size(inst, $1, $2, 8); x86_64_lea_membase_size(inst, $1, $2, $3, 8);
}
} }
/* /*
@ -1028,14 +1027,24 @@ JIT_OP_STORE_ELEMENT_FLOAT64: ternary
*/ */
JIT_OP_IADD: commutative JIT_OP_IADD: commutative
[reg, imm] -> { [reg, immzero] -> {
if($2 == 1) }
[=reg, reg, imms32] -> {
if($1 != $2)
{
x86_64_lea_membase_size(inst, $1, $2, $3, 4);
}
else if($3 == 1)
{ {
x86_64_inc_reg_size(inst, $1, 4); x86_64_inc_reg_size(inst, $1, 4);
} }
else if($3 == -1)
{
x86_64_dec_reg_size(inst, $1, 4);
}
else else
{ {
x86_64_add_reg_imm_size(inst, $1, $2, 4); x86_64_add_reg_imm_size(inst, $1, $3, 4);
} }
} }
[reg, local] -> { [reg, local] -> {
@ -1046,14 +1055,24 @@ JIT_OP_IADD: commutative
} }
JIT_OP_ISUB: JIT_OP_ISUB:
[reg, imm] -> { [reg, immzero] -> {
if($2 == 1) }
[=reg, reg, imms32] -> {
if($1 != $2)
{
x86_64_lea_membase_size(inst, $1, $2, -$3, 4);
}
else if($3 == 1)
{ {
x86_64_dec_reg_size(inst, $1, 4); x86_64_dec_reg_size(inst, $1, 4);
} }
else if($3 == -1)
{
x86_64_inc_reg_size(inst, $1, 4);
}
else else
{ {
x86_64_sub_reg_imm_size(inst, $1, $2, 4); x86_64_sub_reg_imm_size(inst, $1, $3, 4);
} }
} }
[reg, local] -> { [reg, local] -> {
@ -1284,14 +1303,24 @@ JIT_OP_IREM_UN: more_space
*/ */
JIT_OP_LADD: commutative JIT_OP_LADD: commutative
[reg, imms32] -> { [reg, immzero] -> {
if($2 == 1) }
[=reg, reg, imms32] -> {
if($1 != $2)
{
x86_64_lea_membase_size(inst, $1, $2, $3, 8);
}
else if($3 == 1)
{ {
x86_64_inc_reg_size(inst, $1, 8); x86_64_inc_reg_size(inst, $1, 8);
} }
else if($3 == -1)
{
x86_64_dec_reg_size(inst, $1, 8);
}
else else
{ {
x86_64_add_reg_imm_size(inst, $1, $2, 8); x86_64_add_reg_imm_size(inst, $1, $3, 8);
} }
} }
[reg, local] -> { [reg, local] -> {
@ -1302,14 +1331,24 @@ JIT_OP_LADD: commutative
} }
JIT_OP_LSUB: JIT_OP_LSUB:
[reg, imms32] -> { [reg, immzero] -> {
if($2 == 1) }
[=reg, reg, imms32] -> {
if($1 != $2)
{
x86_64_lea_membase_size(inst, $1, $2, -$3, 8);
}
else if($3 == 1)
{ {
x86_64_dec_reg_size(inst, $1, 8); x86_64_dec_reg_size(inst, $1, 8);
} }
else if($3 == -1)
{
x86_64_inc_reg_size(inst, $1, 8);
}
else else
{ {
x86_64_sub_reg_imm_size(inst, $1, $2, 8); x86_64_sub_reg_imm_size(inst, $1, $3, 8);
} }
} }
[reg, local] -> { [reg, local] -> {

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