[RFC PATCH v3 24/78] target/alpha: 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.

Signed-off-by: Emmanouil Pitsidianakis <manos.pitsidiana...@linaro.org>
---
 target/alpha/helper.c    | 6 +++---
 target/alpha/translate.c | 4 +++-
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/target/alpha/helper.c b/target/alpha/helper.c
index 970c869771..1afdc1beec 100644
--- a/target/alpha/helper.c
+++ b/target/alpha/helper.c
@@ -452,17 +452,17 @@ bool alpha_cpu_exec_interrupt(CPUState *cs, int 
interrupt_request)
         if (interrupt_request & CPU_INTERRUPT_HARD) {
             idx = EXCP_DEV_INTERRUPT;
         }
-        /* FALLTHRU */
+        fallthrough;
     case 4:
         if (interrupt_request & CPU_INTERRUPT_TIMER) {
             idx = EXCP_CLK_INTERRUPT;
         }
-        /* FALLTHRU */
+        fallthrough;
     case 5:
         if (interrupt_request & CPU_INTERRUPT_SMP) {
             idx = EXCP_SMP_INTERRUPT;
         }
-        /* FALLTHRU */
+        fallthrough;
     case 6:
         if (interrupt_request & CPU_INTERRUPT_MCHK) {
             idx = EXCP_MCHK;
diff --git a/target/alpha/translate.c b/target/alpha/translate.c
index 32333081d8..19e1d2ed86 100644
--- a/target/alpha/translate.c
+++ b/target/alpha/translate.c
@@ -1436,7 +1436,7 @@ static DisasJumpType translate_one(DisasContext *ctx, 
uint32_t insn)
     case 0x09:
         /* LDAH */
         disp16 = (uint32_t)disp16 << 16;
-        /* fall through */
+        fallthrough;
     case 0x08:
         /* LDA */
         va = dest_gpr(ctx, ra);
@@ -2940,9 +2940,11 @@ static void alpha_tr_tb_stop(DisasContextBase *dcbase, 
CPUState *cpu)
             tcg_gen_exit_tb(ctx->base.tb, 0);
         }
         /* FALLTHRU */
+        fallthrough;
     case DISAS_PC_STALE:
         tcg_gen_movi_i64(cpu_pc, ctx->base.pc_next);
         /* FALLTHRU */
+        fallthrough;
     case DISAS_PC_UPDATED:
         tcg_gen_lookup_and_goto_ptr();
         break;
-- 
2.39.2