[PATCH v2 3/3] tcg: Restart when exhausting the stack frame

[Richard Henderson]

Assume that we'll have fewer temps allocated after
restarting with a fewer number of instructions.

Signed-off-by: Richard Henderson <richard.hender...@linaro.org>
---
 tcg/tcg.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/tcg/tcg.c b/tcg/tcg.c
index 47cc66f159..fec922fa9e 100644
--- a/tcg/tcg.c
+++ b/tcg/tcg.c
@@ -3039,7 +3039,11 @@ static void temp_allocate_frame(TCGContext *s, TCGTemp 
*ts)
 
     assert(align <= TCG_TARGET_STACK_ALIGN);
     off = ROUND_UP(s->current_frame_offset, align);
-    assert(off + size <= s->frame_end);
+
+    /* If we've exhausted the stack frame, restart with a smaller TB. */
+    if (off + size > s->frame_end) {
+        tcg_raise_tb_overflow(s);
+    }
     s->current_frame_offset = off + size;
 
     ts->mem_offset = off;
-- 
2.25.1