diff --git a/qemu/target-arm/neon_helper.c b/qemu/target-arm/neon_helper.c
index 6838e7cc..308fd713 100644
--- a/qemu/target-arm/neon_helper.c
+++ b/qemu/target-arm/neon_helper.c
@@ -688,7 +688,7 @@ uint64_t HELPER(neon_shl_s64)(uint64_t valop, uint64_t shiftop)
     } else if (tmp < 0) { \
         dest = (src1 + (1 << (-1 - tmp))) >> -tmp; \
     } else { \
-        dest = src1 << tmp; \
+        dest = (uint64_t)src1 << tmp; \
     }} while (0)
 NEON_VOP(rshl_s8, neon_s8, 4)
 NEON_VOP(rshl_s16, neon_s16, 2)
diff --git a/qemu/target-i386/int_helper.c b/qemu/target-i386/int_helper.c
index b79b2242..0de38c1c 100644
--- a/qemu/target-i386/int_helper.c
+++ b/qemu/target-i386/int_helper.c
@@ -105,7 +105,7 @@ void helper_idivw_AX(CPUX86State *env, target_ulong t0)
     if (den == 0) {
         raise_exception(env, EXCP00_DIVZ);
     }
-    q = (num / den);
+    q = ((int64_t)num / den);
     if (q != (int16_t)q) {
         raise_exception(env, EXCP00_DIVZ);
     }
diff --git a/qemu/target-i386/ops_sse.h b/qemu/target-i386/ops_sse.h
index 9a682deb..3d49fcc7 100644
--- a/qemu/target-i386/ops_sse.h
+++ b/qemu/target-i386/ops_sse.h
@@ -1415,7 +1415,7 @@ void glue(helper_phaddw, SUFFIX)(CPUX86State *env, Reg *d, Reg *s)
 
 void glue(helper_phaddd, SUFFIX)(CPUX86State *env, Reg *d, Reg *s)
 {
-    d->L(0) = (int32_t)d->L(0) + (int32_t)d->L(1);
+    d->L(0) = (int64_t)d->L(0) + (int32_t)d->L(1);
     XMM_ONLY(d->L(1) = (int32_t)d->L(2) + (int32_t)d->L(3));
     d->L((1 << SHIFT) + 0) = (uint32_t)((int32_t)s->L(0) + (uint32_t)s->L(1));
     XMM_ONLY(d->L(3) = (int32_t)s->L(2) + (int32_t)s->L(3));