From: Aurelien Jarno <aurelien@aurel32.net>
Date: Sat, 25 Aug 2012 22:45:27 +0000 (+0200)
Subject: tcg/ia64: fix and optimize ld/st slow path
X-Git-Tag: Tizen_Studio_1.3_Release_p2.3.1~1405^2~17^2~37
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=d03c98d80ffb7c561d9e6874580f52fe7ecc8c6c;p=sdk%2Femulator%2Fqemu.git

tcg/ia64: fix and optimize ld/st slow path

Store slow path has been broken in e141ab52d:
- the arguments are shifted before the last one (mem_index) is written.
- the shift is done for both slow and fast paths.

Fix that. Also optimize a bit by bundling the move together. This still
can be optimized, but it's better to wait for a decision to be taken on
the arguments order.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
---

diff --git a/tcg/ia64/tcg-target.c b/tcg/ia64/tcg-target.c
index b3c7db0f98..dc588dbea5 100644
--- a/tcg/ia64/tcg-target.c
+++ b/tcg/ia64/tcg-target.c
@@ -1532,12 +1532,13 @@ static inline void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args, int opc)
     }
 #ifdef CONFIG_TCG_PASS_AREG0
     /* XXX/FIXME: suboptimal */
-    tcg_out_mov(s, TCG_TYPE_I32, tcg_target_call_iarg_regs[2],
-                tcg_target_call_iarg_regs[1]);
-    tcg_out_mov(s, TCG_TYPE_TL, tcg_target_call_iarg_regs[1],
-                tcg_target_call_iarg_regs[0]);
-    tcg_out_mov(s, TCG_TYPE_PTR, tcg_target_call_iarg_regs[0],
-                TCG_AREG0);
+    tcg_out_bundle(s, mII,
+                   tcg_opc_a5 (TCG_REG_P7, OPC_ADDL_A5, TCG_REG_R58,
+                               mem_index, TCG_REG_R0),
+                   tcg_opc_a4 (TCG_REG_P7, OPC_ADDS_A4,
+                               TCG_REG_R57, 0, TCG_REG_R56),
+                   tcg_opc_a4 (TCG_REG_P7, OPC_ADDS_A4,
+                               TCG_REG_R56, 0, TCG_AREG0));
 #endif
     if (!bswap || s_bits == 0) {
         tcg_out_bundle(s, miB,
@@ -1659,15 +1660,21 @@ static inline void tcg_out_qemu_st(TCGContext *s, const TCGArg *args, int opc)
 
 #ifdef CONFIG_TCG_PASS_AREG0
     /* XXX/FIXME: suboptimal */
-    tcg_out_mov(s, TCG_TYPE_I32, tcg_target_call_iarg_regs[3],
-                tcg_target_call_iarg_regs[2]);
-    tcg_out_mov(s, TCG_TYPE_I64, tcg_target_call_iarg_regs[2],
-                tcg_target_call_iarg_regs[1]);
-    tcg_out_mov(s, TCG_TYPE_TL, tcg_target_call_iarg_regs[1],
-                tcg_target_call_iarg_regs[0]);
-    tcg_out_mov(s, TCG_TYPE_PTR, tcg_target_call_iarg_regs[0],
-                TCG_AREG0);
-#endif
+    tcg_out_bundle(s, mII,
+                   tcg_opc_a5 (TCG_REG_P7, OPC_ADDL_A5, TCG_REG_R59,
+                               mem_index, TCG_REG_R0),
+                   tcg_opc_a4 (TCG_REG_P7, OPC_ADDS_A4,
+                               TCG_REG_R58, 0, TCG_REG_R57),
+                   tcg_opc_a4 (TCG_REG_P7, OPC_ADDS_A4,
+                               TCG_REG_R57, 0, TCG_REG_R56));
+    tcg_out_bundle(s, miB,
+                   tcg_opc_m4 (TCG_REG_P6, opc_st_m4[opc],
+                               data_reg, TCG_REG_R3),
+                   tcg_opc_a4 (TCG_REG_P7, OPC_ADDS_A4,
+                               TCG_REG_R56, 0, TCG_AREG0),
+                   tcg_opc_b5 (TCG_REG_P7, OPC_BR_CALL_SPTK_MANY_B5,
+                               TCG_REG_B0, TCG_REG_B6));
+#else
     tcg_out_bundle(s, miB,
                    tcg_opc_m4 (TCG_REG_P6, opc_st_m4[opc],
                                data_reg, TCG_REG_R3),
@@ -1675,6 +1682,7 @@ static inline void tcg_out_qemu_st(TCGContext *s, const TCGArg *args, int opc)
                                mem_index, TCG_REG_R0),
                    tcg_opc_b5 (TCG_REG_P7, OPC_BR_CALL_SPTK_MANY_B5,
                                TCG_REG_B0, TCG_REG_B6));
+#endif
 }
 
 #else /* !CONFIG_SOFTMMU */