diff mbox series

[v5,14/17] target/arm: Hoist store to cs_base in cpu_get_tb_cpu_state

Message ID 20190820210720.18976-15-richard.henderson@linaro.org (mailing list archive)
State New, archived
Headers show
Series target/arm: Reduce overhead of cpu_get_tb_cpu_state | expand

Commit Message

Richard Henderson Aug. 20, 2019, 9:07 p.m. UTC 
By performing this store early, we avoid having to save and restore
the register holding the address around any function calls.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/arm/helper.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/target/arm/helper.c b/target/arm/helper.c
index 19bdb9b9d6..7a94495788 100644
--- a/target/arm/helper.c
+++ b/target/arm/helper.c
@@ -11187,6 +11187,7 @@  void cpu_get_tb_cpu_state(CPUARMState *env, target_ulong *pc,
 {
     uint32_t flags, pstate_for_ss;
 
+    *cs_base = 0;
     flags = rebuild_hflags_internal(env);
 
     if (is_a64(env)) {
@@ -11260,7 +11261,6 @@  void cpu_get_tb_cpu_state(CPUARMState *env, target_ulong *pc,
     }
 
     *pflags = flags;
-    *cs_base = 0;
 }
 
 #ifdef TARGET_AARCH64