[Qemu-devel] [PATCH 3/3] remove unused TB cflags

[Jan Kiszka <jan.kiszka@web.de>]

TranslationBlock.cflags is unused, now that no one is interested in
CF_SINGLE_INSN anymore. Also the other CF_* flags have no users, so
let's clean this up.

Signed-off-by: Jan Kiszka <jan.kiszka@web.de>
---
 exec-all.h              |    4 ----
 exec.c                  |    7 ++-----
 target-i386/translate.c |    6 ++----
 3 files changed, 4 insertions(+), 13 deletions(-)

Index: b/exec-all.h
===================================================================
--- a/exec-all.h
+++ b/exec-all.h
@@ -123,10 +123,6 @@ typedef struct TranslationBlock {
     uint64_t flags; /* flags defining in which context the code was generated */
     uint16_t size;      /* size of target code for this block (1 <=
                            size <= TARGET_PAGE_SIZE) */
-    uint16_t cflags;    /* compile flags */
-#define CF_TB_FP_USED  0x0002 /* fp ops are used in the TB */
-#define CF_FP_USED     0x0004 /* fp ops are used in the TB or in a chained TB */
-#define CF_SINGLE_INSN 0x0008 /* compile only a single instruction */
 
     uint8_t *tc_ptr;    /* pointer to the translated code */
     /* next matching tb for physical address. */
Index: b/exec.c
===================================================================
--- a/exec.c
+++ b/exec.c
@@ -781,8 +781,7 @@ void tb_invalidate_phys_page_range(targe
                     current_tb = tb_find_pc(env->mem_write_pc);
                 }
             }
-            if (current_tb == tb &&
-                !(current_tb->cflags & CF_SINGLE_INSN)) {
+            if (current_tb == tb) {
                 /* If we are modifying the current TB, we must stop
                 its execution. We could be more precise by checking
                 that the modification is after the current PC, but it
@@ -899,8 +898,7 @@ static void tb_invalidate_phys_page(targ
         n = (long)tb & 3;
         tb = (TranslationBlock *)((long)tb & ~3);
 #ifdef TARGET_HAS_PRECISE_SMC
-        if (current_tb == tb &&
-            !(current_tb->cflags & CF_SINGLE_INSN)) {
+        if (current_tb == tb) {
                 /* If we are modifying the current TB, we must stop
                    its execution. We could be more precise by checking
                    that the modification is after the current PC, but it
@@ -1002,7 +1000,6 @@ TranslationBlock *tb_alloc(target_ulong 
         return NULL;
     tb = &tbs[nb_tbs++];
     tb->pc = pc;
-    tb->cflags = 0;
     return tb;
 }
 
Index: b/target-i386/translate.c
===================================================================
--- a/target-i386/translate.c
+++ b/target-i386/translate.c
@@ -7101,7 +7101,7 @@ static inline int gen_intermediate_code_
     DisasContext dc1, *dc = &dc1;
     target_ulong pc_ptr;
     uint16_t *gen_opc_end;
-    int j, lj, cflags;
+    int j, lj;
     uint64_t flags;
     target_ulong pc_start;
     target_ulong cs_base;
@@ -7110,7 +7110,6 @@ static inline int gen_intermediate_code_
     pc_start = tb->pc;
     cs_base = tb->cs_base;
     flags = tb->flags;
-    cflags = tb->cflags;
 
     dc->pe = (flags >> HF_PE_SHIFT) & 1;
     dc->code32 = (flags >> HF_CS32_SHIFT) & 1;
@@ -7206,8 +7205,7 @@ static inline int gen_intermediate_code_
            the flag and abort the translation to give the irqs a
            change to be happen */
         if (dc->tf || dc->singlestep_enabled ||
-            (flags & HF_INHIBIT_IRQ_MASK) ||
-            (cflags & CF_SINGLE_INSN)) {
+            (flags & HF_INHIBIT_IRQ_MASK)) {
             gen_jmp_im(pc_ptr - dc->cs_base);
             gen_eob(dc);
             break;