[RFC PATCH v3 31/78] target/xtensa: add fallthrough pseudo-keyword

[Emmanouil Pitsidianakis]

In preparation of raising -Wimplicit-fallthrough to 5, replace all
fall-through comments with the fallthrough attribute pseudo-keyword.

Reviewed-by: Max Filippov <jcmvb...@gmail.com>
Signed-off-by: Emmanouil Pitsidianakis <manos.pitsidiana...@linaro.org>
---
 target/xtensa/op_helper.c | 8 ++++----
 target/xtensa/translate.c | 2 +-
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/target/xtensa/op_helper.c b/target/xtensa/op_helper.c
index 7bb8cd6726..69b72f474d 100644
--- a/target/xtensa/op_helper.c
+++ b/target/xtensa/op_helper.c
@@ -108,10 +108,10 @@ void HELPER(check_atomctl)(CPUXtensaState *env, uint32_t 
pc, uint32_t vaddr)
     switch (access & PAGE_CACHE_MASK) {
     case PAGE_CACHE_WB:
         atomctl >>= 2;
-        /* fall through */
+        fallthrough;
     case PAGE_CACHE_WT:
         atomctl >>= 2;
-        /* fall through */
+        fallthrough;
     case PAGE_CACHE_BYPASS:
         if ((atomctl & 0x3) == 0) {
             HELPER(exception_cause_vaddr)(env, pc,
@@ -150,10 +150,10 @@ void HELPER(check_exclusive)(CPUXtensaState *env, 
uint32_t pc, uint32_t vaddr,
     switch (access & PAGE_CACHE_MASK) {
     case PAGE_CACHE_WB:
         atomctl >>= 2;
-        /* fall through */
+        fallthrough;
     case PAGE_CACHE_WT:
         atomctl >>= 2;
-        /* fall through */
+        fallthrough;
     case PAGE_CACHE_BYPASS:
         if ((atomctl & 0x3) == 0) {
             HELPER(exception_cause_vaddr)(env, pc,
diff --git a/target/xtensa/translate.c b/target/xtensa/translate.c
index 54bee7ddba..8ef940933c 100644
--- a/target/xtensa/translate.c
+++ b/target/xtensa/translate.c
@@ -803,7 +803,7 @@ static void opcode_add_resource(struct slot_prop *op,
         op->in[op->n_in].resource = resource;
         op->in[op->n_in].index = index;
         ++op->n_in;
-        /* fall through */
+        fallthrough;
     case 'o':
         if (direction == 'm' || direction == 'o') {
             assert(op->n_out < ARRAY_SIZE(op->out));
-- 
2.39.2