Successfully bootstrapped & regrtested on x86_64-pc-linux-gnu.
Pushed to trunk as r14-1496-gb8a916726e7f4b.
gcc/analyzer/ChangeLog:
* store.cc (store::eval_alias_1): Regions in different memory
spaces can't alias.
---
gcc/analyzer/store.cc | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/gcc/analyzer/store.cc b/gcc/analyzer/store.cc
index e8c927b9fe9..4d1de825e79 100644
--- a/gcc/analyzer/store.cc
+++ b/gcc/analyzer/store.cc
@@ -2710,6 +2710,18 @@ tristate
store::eval_alias_1 (const region *base_reg_a,
const region *base_reg_b) const
{
+ /* If they're in different memory spaces, they can't alias. */
+ {
+ enum memory_space memspace_a = base_reg_a->get_memory_space ();
+ if (memspace_a != MEMSPACE_UNKNOWN)
+ {
+ enum memory_space memspace_b = base_reg_b->get_memory_space ();
+ if (memspace_b != MEMSPACE_UNKNOWN
+ && memspace_a != memspace_b)
+ return tristate::TS_FALSE;
+ }
+ }
+
if (const symbolic_region *sym_reg_a
= base_reg_a->dyn_cast_symbolic_region ())
{
--
2.26.3
