cpu-exec: simplify icount code

Use MIN instead of an "if" statement.  Move "tb" assignment where
the value is actually used.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>

diff --git a/cpu-exec.c b/cpu-exec.c
index 4ff1b236a17292c0a4817e40a8ff3b4093c9154e..67381176da8cdce50e2b1a5884215321ec22d996 100644 (file)
--- a/cpu-exec.c
+++ b/cpu-exec.c
@@ -499,22 +499,17 @@ int cpu_exec(CPUArchState *env)
                     case TB_EXIT_ICOUNT_EXPIRED:
                     {
                         /* Instruction counter expired.  */
-                        int insns_left;
-                        tb = (TranslationBlock *)(next_tb & ~TB_EXIT_MASK);
-                        insns_left = cpu->icount_decr.u32;
+                        int insns_left = cpu->icount_decr.u32;
                         if (cpu->icount_extra && insns_left >= 0) {
                             /* Refill decrementer and continue execution.  */
                             cpu->icount_extra += insns_left;
-                            if (cpu->icount_extra > 0xffff) {
-                                insns_left = 0xffff;
-                            } else {
-                                insns_left = cpu->icount_extra;
-                            }
+                            insns_left = MIN(0xffff, cpu->icount_extra);
                             cpu->icount_extra -= insns_left;
                             cpu->icount_decr.u16.low = insns_left;
                         } else {
                             if (insns_left > 0) {
                                 /* Execute remaining instructions.  */
+                                tb = (TranslationBlock *)(next_tb & ~TB_EXIT_MASK);
                                 cpu_exec_nocache(env, insns_left, tb);
                                 align_clocks(&sc, cpu);
                             }