[Qemu-devel] [PATCH 3/3] target-arm: cache most tbflags

[Paolo Bonzini]

Finally, this patch makes most flags static.  The only remaining
dynamic flags (only used in aarch32 mode) are for Thumb mode and
conditional execution.  These are modified more often than the
others, and are cheap therefore they are looked up directly from
env on every TB lookup.

Signed-off-by: Paolo Bonzini <address@hidden>
---
 target-arm/cpu.h | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/target-arm/cpu.h b/target-arm/cpu.h
index 5918df5..0b72740 100644
--- a/target-arm/cpu.h
+++ b/target-arm/cpu.h
@@ -2320,17 +2320,15 @@ static inline bool arm_cpu_bswap_data(CPUARMState *env)
 }
 #endif
 
-static inline uint32_t cpu_dynamic_tb_cpu_flags(CPUARMState *env)
+static inline uint32_t cpu_get_tb_cpu_flags(CPUARMState *env)
 {
     uint32_t flags = 0;
 
     if (is_a64(env)) {
         flags |= ARM_TBFLAG_AARCH64_STATE_MASK;
     } else {
-        flags |= (env->thumb << ARM_TBFLAG_THUMB_SHIFT)
-            | (env->vfp.vec_len << ARM_TBFLAG_VECLEN_SHIFT)
+        flags |= (env->vfp.vec_len << ARM_TBFLAG_VECLEN_SHIFT)
             | (env->vfp.vec_stride << ARM_TBFLAG_VECSTRIDE_SHIFT)
-            | (env->condexec_bits << ARM_TBFLAG_CONDEXEC_SHIFT)
             | (arm_sctlr_b(env) << ARM_TBFLAG_SCTLR_B_SHIFT);
         if (!(access_secure_reg(env))) {
             flags |= ARM_TBFLAG_NS_MASK;
@@ -2371,10 +2369,15 @@ static inline uint32_t 
cpu_dynamic_tb_cpu_flags(CPUARMState *env)
     return flags;
 }
 
-static inline uint32_t cpu_get_tb_cpu_flags(CPUARMState *env)
+static inline uint32_t cpu_dynamic_tb_cpu_flags(CPUARMState *env)
 {
     uint32_t flags = 0;
 
+    if (!is_a64(env)) {
+        flags |= (env->thumb << ARM_TBFLAG_THUMB_SHIFT)
+            | (env->condexec_bits << ARM_TBFLAG_CONDEXEC_SHIFT);
+    }
+
     return flags;
 }
 
-- 
2.7.4