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Diffstat (limited to 'target/microblaze/translate.c')
-rw-r--r--target/microblaze/translate.c15
1 files changed, 9 insertions, 6 deletions
diff --git a/target/microblaze/translate.c b/target/microblaze/translate.c
index 597b96ffb3..c0b586f467 100644
--- a/target/microblaze/translate.c
+++ b/target/microblaze/translate.c
@@ -75,7 +75,7 @@ typedef struct DisasContext {
unsigned int cpustate_changed;
unsigned int delayed_branch;
unsigned int tb_flags;
- unsigned int clear_imm;
+ unsigned int tb_flags_to_set;
int mem_index;
#define JMP_NOJMP 0
@@ -535,8 +535,7 @@ static bool trans_imm(DisasContext *dc, arg_imm *arg)
{
dc->ext_imm = arg->imm << 16;
tcg_gen_movi_i32(cpu_imm, dc->ext_imm);
- dc->tb_flags |= IMM_FLAG;
- dc->clear_imm = 0;
+ dc->tb_flags_to_set = IMM_FLAG;
return true;
}
@@ -1688,7 +1687,8 @@ static void mb_tr_translate_insn(DisasContextBase *dcb, CPUState *cs)
(uint32_t)dc->base.pc_next);
}
- dc->clear_imm = 1;
+ dc->tb_flags_to_set = 0;
+
ir = cpu_ldl_code(env, dc->base.pc_next);
if (!decode(dc, ir)) {
old_decode(dc, ir);
@@ -1700,10 +1700,13 @@ static void mb_tr_translate_insn(DisasContextBase *dcb, CPUState *cs)
dc->r0_set = false;
}
- if (dc->clear_imm && (dc->tb_flags & IMM_FLAG)) {
- dc->tb_flags &= ~IMM_FLAG;
+ /* Discard the imm global when its contents cannot be used. */
+ if ((dc->tb_flags & ~dc->tb_flags_to_set) & IMM_FLAG) {
tcg_gen_discard_i32(cpu_imm);
}
+
+ dc->tb_flags &= ~IMM_FLAG;
+ dc->tb_flags |= dc->tb_flags_to_set;
dc->base.pc_next += 4;
if (dc->delayed_branch && --dc->delayed_branch == 0) {