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tcg-ppc64: Implement movcond 

Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2013-02-01 13:00:05 -08:00
parent 70fac59a2a
commit 027ffea972
2 changed files with 61 additions and 2 deletions
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59
tcg/ppc64/tcg-target.c
View File

@ -1321,6 +1321,54 @@ static void tcg_out_brcond(TCGContext *s, TCGCond cond,
tcg_out_bc(s, tcg_to_bc[cond], label_index);
}
static void tcg_out_movcond(TCGContext *s, TCGType type, TCGCond cond,
TCGArg dest, TCGArg c1, TCGArg c2, TCGArg v1,
TCGArg v2, bool const_c2)
{
/* If for some reason both inputs are zero, don't produce bad code. */
if (v1 == 0 && v2 == 0) {
tcg_out_movi(s, type, dest, 0);
return;
}
tcg_out_cmp(s, cond, c1, c2, const_c2, 7, type);
if (HAVE_ISEL) {
int isel = tcg_to_isel[cond];
/* Swap the V operands if the operation indicates inversion. */
if (isel & 1) {
int t = v1;
v1 = v2;
v2 = t;
isel &= ~1;
}
/* V1 == 0 is handled by isel; V2 == 0 must be handled by hand. */
if (v2 == 0) {
tcg_out_movi(s, type, 0, 0);
}
tcg_out32(s, isel | TAB(dest, v1, v2));
} else {
if (dest == v2) {
cond = tcg_invert_cond(cond);
v2 = v1;
} else if (dest != v1) {
if (v1 == 0) {
tcg_out_movi(s, type, dest, 0);
} else {
tcg_out_mov(s, type, dest, v1);
}
}
/* Branch forward over one insn */
tcg_out32(s, tcg_to_bc[cond] | 8);
if (v2 == 0) {
tcg_out_movi(s, type, dest, 0);
} else {
tcg_out_mov(s, type, dest, v2);
}
}
}
void ppc_tb_set_jmp_target (unsigned long jmp_addr, unsigned long addr)
{
TCGContext s;
@ -1871,6 +1919,15 @@ static void tcg_out_op (TCGContext *s, TCGOpcode opc, const TCGArg *args,
64 - args[3] - args[4]);
break;
case INDEX_op_movcond_i32:
tcg_out_movcond(s, TCG_TYPE_I32, args[5], args[0], args[1], args[2],
args[3], args[4], const_args[2]);
break;
case INDEX_op_movcond_i64:
tcg_out_movcond(s, TCG_TYPE_I64, args[5], args[0], args[1], args[2],
args[3], args[4], const_args[2]);
break;
default:
tcg_dump_ops (s);
tcg_abort ();
@ -1985,6 +2042,8 @@ static const TCGTargetOpDef ppc_op_defs[] = {
{ INDEX_op_setcond_i32, { "r", "r", "ri" } },
{ INDEX_op_setcond_i64, { "r", "r", "ri" } },
{ INDEX_op_movcond_i32, { "r", "r", "ri", "rZ", "rZ" } },
{ INDEX_op_movcond_i64, { "r", "r", "ri", "rZ", "rZ" } },
{ INDEX_op_bswap16_i32, { "r", "r" } },
{ INDEX_op_bswap16_i64, { "r", "r" } },

4
tcg/ppc64/tcg-target.h
View File

@ -89,7 +89,7 @@ typedef enum {
#define TCG_TARGET_HAS_nand_i32 1
#define TCG_TARGET_HAS_nor_i32 1
#define TCG_TARGET_HAS_deposit_i32 1
#define TCG_TARGET_HAS_movcond_i32 0
#define TCG_TARGET_HAS_movcond_i32 1
#define TCG_TARGET_HAS_add2_i32 0
#define TCG_TARGET_HAS_sub2_i32 0
#define TCG_TARGET_HAS_mulu2_i32 0
@ -111,7 +111,7 @@ typedef enum {
#define TCG_TARGET_HAS_nand_i64 1
#define TCG_TARGET_HAS_nor_i64 1
#define TCG_TARGET_HAS_deposit_i64 1
#define TCG_TARGET_HAS_movcond_i64 0
#define TCG_TARGET_HAS_movcond_i64 1
#define TCG_TARGET_HAS_add2_i64 0
#define TCG_TARGET_HAS_sub2_i64 0
#define TCG_TARGET_HAS_mulu2_i64 0