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[Qemu-devel] [4962] Immediate versions of some operations
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From: |
malc |
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Subject: |
[Qemu-devel] [4962] Immediate versions of some operations |
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Date: |
Mon, 28 Jul 2008 23:46:07 +0000 |
Revision: 4962
http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=4962
Author: malc
Date: 2008-07-28 23:46:06 +0000 (Mon, 28 Jul 2008)
Log Message:
-----------
Immediate versions of some operations
Modified Paths:
--------------
trunk/tcg/ppc64/tcg-target.c
Modified: trunk/tcg/ppc64/tcg-target.c
===================================================================
--- trunk/tcg/ppc64/tcg-target.c 2008-07-28 23:46:03 UTC (rev 4961)
+++ trunk/tcg/ppc64/tcg-target.c 2008-07-28 23:46:06 UTC (rev 4962)
@@ -22,6 +22,8 @@
* THE SOFTWARE.
*/
+#define TCG_CT_CONST_U32 0x100
+
static uint8_t *tb_ret_addr;
#define FAST_PATH
@@ -226,6 +228,9 @@
tcg_regset_reset_reg (ct->u.regs, TCG_REG_R4);
tcg_regset_reset_reg (ct->u.regs, TCG_REG_R5);
break;
+ case 'Z':
+ ct->ct |= TCG_CT_CONST_U32;
+ break;
default:
return -1;
}
@@ -243,6 +248,8 @@
ct = arg_ct->ct;
if (ct & TCG_CT_CONST)
return 1;
+ else if ((ct & TCG_CT_CONST_U32) && (val == (uint32_t) val))
+ return 1;
return 0;
}
@@ -352,6 +359,7 @@
#define SLD XO31( 27)
#define SRD XO31(539)
#define SRAD XO31(794)
+#define SRADI XO31(413<<1)
#define LMW OPCD( 46)
#define STMW OPCD( 47)
@@ -874,8 +882,14 @@
static void ppc_addi64 (TCGContext *s, int rt, int ra, tcg_target_long si)
{
- tcg_out_movi (s, TCG_TYPE_I64, 0, si);
- tcg_out32 (s, ADD | RT (rt) | RA (ra));
+ /* XXX: suboptimal */
+ if (si == (int16_t) si
+ || (((uint64_t) si >> 31) == 0) && (si & 0x8000) == 0)
+ ppc_addi32 (s, rt, ra, si);
+ else {
+ tcg_out_movi (s, TCG_TYPE_I64, 0, si);
+ tcg_out32 (s, ADD | RT (rt) | RA (ra));
+ }
}
static void tcg_out_addi (TCGContext *s, int reg, tcg_target_long val)
@@ -1102,6 +1116,7 @@
tcg_out32 (s, SUBF | TAB (args[0], args[2], args[1]));
break;
+ case INDEX_op_and_i64:
case INDEX_op_and_i32:
if (const_args[2]) {
if ((args[2] & 0xffff) == args[2])
@@ -1110,13 +1125,17 @@
tcg_out32 (s, ANDIS | RS (args[1]) | RA (args[0])
| ((args[2] >> 16) & 0xffff));
else {
- tcg_out_movi (s, TCG_TYPE_I32, 0, args[2]);
+ tcg_out_movi (s, (opc == INDEX_op_and_i32
+ ? TCG_TYPE_I32
+ : TCG_TYPE_I64),
+ 0, args[2]);
tcg_out32 (s, AND | SAB (args[1], args[0], 0));
}
}
else
tcg_out32 (s, AND | SAB (args[1], args[0], args[2]));
break;
+ case INDEX_op_or_i64:
case INDEX_op_or_i32:
if (const_args[2]) {
if (args[2] & 0xffff) {
@@ -1134,6 +1153,7 @@
else
tcg_out32 (s, OR | SAB (args[1], args[0], args[2]));
break;
+ case INDEX_op_xor_i64:
case INDEX_op_xor_i32:
if (const_args[2]) {
if ((args[2] & 0xffff) == args[2])
@@ -1143,7 +1163,10 @@
tcg_out32 (s, XORIS | RS (args[1]) | RA (args[0])
| ((args[2] >> 16) & 0xffff));
else {
- tcg_out_movi (s, TCG_TYPE_I32, 0, args[2]);
+ tcg_out_movi (s, (opc == INDEX_op_and_i32
+ ? TCG_TYPE_I32
+ : TCG_TYPE_I64),
+ 0, args[2]);
tcg_out32 (s, XOR | SAB (args[1], args[0], 0));
}
}
@@ -1234,30 +1257,37 @@
break;
case INDEX_op_add_i64:
- tcg_out32 (s, ADD | TAB (args[0], args[1], args[2]));
+ if (const_args[2])
+ ppc_addi64 (s, args[0], args[1], args[2]);
+ else
+ tcg_out32 (s, ADD | TAB (args[0], args[1], args[2]));
break;
case INDEX_op_sub_i64:
- tcg_out32 (s, SUBF | TAB (args[0], args[2], args[1]));
+ if (const_args[2])
+ ppc_addi64 (s, args[0], args[1], -args[2]);
+ else
+ tcg_out32 (s, SUBF | TAB (args[0], args[2], args[1]));
break;
- case INDEX_op_and_i64:
- tcg_out32 (s, AND | SAB (args[1], args[0], args[2]));
- break;
- case INDEX_op_or_i64:
- tcg_out32 (s, OR | SAB (args[1], args[0], args[2]));
- break;
- case INDEX_op_xor_i64:
- tcg_out32 (s, XOR | SAB (args[1], args[0], args[2]));
- break;
-
case INDEX_op_shl_i64:
- tcg_out32 (s, SLD | SAB (args[1], args[0], args[2]));
+ if (const_args[2])
+ tcg_out_rld (s, RLDICR, args[0], args[1], args[2], 63 - args[2]);
+ else
+ tcg_out32 (s, SLD | SAB (args[1], args[0], args[2]));
break;
case INDEX_op_shr_i64:
- tcg_out32 (s, SRD | SAB (args[1], args[0], args[2]));
+ if (const_args[2])
+ tcg_out_rld (s, RLDICL, args[0], args[1], 64 - args[2], args[2]);
+ else
+ tcg_out32 (s, SRD | SAB (args[1], args[0], args[2]));
break;
case INDEX_op_sar_i64:
- tcg_out32 (s, SRAD | SAB (args[1], args[0], args[2]));
+ if (const_args[2]) {
+ int sh = SH (args[2] & 0x1f) | (((args[2] >> 5) & 1) << 1);
+ tcg_out32 (s, SRADI | RA (args[0]) | RS (args[1]) | sh);
+ }
+ else
+ tcg_out32 (s, SRAD | SAB (args[1], args[0], args[2]));
break;
case INDEX_op_mul_i64:
@@ -1389,15 +1419,15 @@
{ INDEX_op_neg_i32, { "r", "r" } },
- { INDEX_op_add_i64, { "r", "r", "r" } },
- { INDEX_op_sub_i64, { "r", "r", "r" } },
- { INDEX_op_and_i64, { "r", "r", "r" } },
- { INDEX_op_or_i64, { "r", "r", "r" } },
- { INDEX_op_xor_i64, { "r", "r", "r" } },
+ { INDEX_op_add_i64, { "r", "r", "ri" } },
+ { INDEX_op_sub_i64, { "r", "r", "ri" } },
+ { INDEX_op_and_i64, { "r", "r", "rZ" } },
+ { INDEX_op_or_i64, { "r", "r", "rZ" } },
+ { INDEX_op_xor_i64, { "r", "r", "rZ" } },
- { INDEX_op_shl_i64, { "r", "r", "r" } },
- { INDEX_op_shr_i64, { "r", "r", "r" } },
- { INDEX_op_sar_i64, { "r", "r", "r" } },
+ { INDEX_op_shl_i64, { "r", "r", "ri" } },
+ { INDEX_op_shr_i64, { "r", "r", "ri" } },
+ { INDEX_op_sar_i64, { "r", "r", "ri" } },
{ INDEX_op_mul_i64, { "r", "r", "r" } },
{ INDEX_op_div_i64, { "r", "r", "r" } },
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