This commit defines TCG_TARGET_REG_BITS based on the value of
TCG_VADDR_BITS. For non-wasm hosts, TCG_VADDR_BITS matches the pointer size,
so this change preserves the original behaviour. For the wasm host, this
change enables support for 64bit guests.

Signed-off-by: Kohei Tokunaga <ktokunaga.mail@gmail.com>
---
 tcg/tci/tcg-target-reg-bits.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tcg/tci/tcg-target-reg-bits.h b/tcg/tci/tcg-target-reg-bits.h
index dcb1a203f8..0e5db44e22 100644
--- a/tcg/tci/tcg-target-reg-bits.h
+++ b/tcg/tci/tcg-target-reg-bits.h
@@ -7,9 +7,9 @@
 #ifndef TCG_TARGET_REG_BITS_H
 #define TCG_TARGET_REG_BITS_H
 
-#if UINTPTR_MAX == UINT32_MAX
+#if TCG_VADDR_BITS == 32
 # define TCG_TARGET_REG_BITS 32
-#elif UINTPTR_MAX == UINT64_MAX
+#elif TCG_VADDR_BITS == 64
 # define TCG_TARGET_REG_BITS 64
 #else
 # error Unknown pointer size for tci target
-- 
2.43.0