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[Qemu-devel] [PATCH v3 04/16] tcg/aarch64: Fold away "noaddr" branch rou


From: Richard Henderson
Subject: [Qemu-devel] [PATCH v3 04/16] tcg/aarch64: Fold away "noaddr" branch routines
Date: Fri, 30 Nov 2018 13:52:09 -0800

There are one use apiece for these.  There is no longer a need for
preserving branch offset operands, as we no longer re-translate.

Signed-off-by: Richard Henderson <address@hidden>
---
 tcg/aarch64/tcg-target.inc.c | 21 ++-------------------
 1 file changed, 2 insertions(+), 19 deletions(-)

diff --git a/tcg/aarch64/tcg-target.inc.c b/tcg/aarch64/tcg-target.inc.c
index a41b633960..28de0226fb 100644
--- a/tcg/aarch64/tcg-target.inc.c
+++ b/tcg/aarch64/tcg-target.inc.c
@@ -1129,23 +1129,6 @@ static inline void tcg_out_goto_long(TCGContext *s, 
tcg_insn_unit *target)
     }
 }
 
-static inline void tcg_out_goto_noaddr(TCGContext *s)
-{
-    /* We pay attention here to not modify the branch target by reading from
-       the buffer. This ensure that caches and memory are kept coherent during
-       retranslation.  Mask away possible garbage in the high bits for the
-       first translation, while keeping the offset bits for retranslation. */
-    uint32_t old = tcg_in32(s);
-    tcg_out_insn(s, 3206, B, old);
-}
-
-static inline void tcg_out_goto_cond_noaddr(TCGContext *s, TCGCond c)
-{
-    /* See comments in tcg_out_goto_noaddr.  */
-    uint32_t old = tcg_in32(s) >> 5;
-    tcg_out_insn(s, 3202, B_C, c, old);
-}
-
 static inline void tcg_out_callr(TCGContext *s, TCGReg reg)
 {
     tcg_out_insn(s, 3207, BLR, reg);
@@ -1192,7 +1175,7 @@ static inline void tcg_out_goto_label(TCGContext *s, 
TCGLabel *l)
 {
     if (!l->has_value) {
         tcg_out_reloc(s, s->code_ptr, R_AARCH64_JUMP26, l, 0);
-        tcg_out_goto_noaddr(s);
+        tcg_out_insn(s, 3206, B, 0);
     } else {
         tcg_out_goto(s, l->u.value_ptr);
     }
@@ -1523,7 +1506,7 @@ static void tcg_out_tlb_read(TCGContext *s, TCGReg 
addr_reg, TCGMemOp opc,
 
     /* If not equal, we jump to the slow path. */
     *label_ptr = s->code_ptr;
-    tcg_out_goto_cond_noaddr(s, TCG_COND_NE);
+    tcg_out_insn(s, 3202, B_C, TCG_COND_NE, 0);
 }
 
 #endif /* CONFIG_SOFTMMU */
-- 
2.17.2




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