When expanding an aggregate copy into a memcpy call RTL expansion
uses mark_addressable to ensure the base object is addressable but
that function doesn't handle TARGET_MEM_REF bases. Fixed as follows.
Bootstrapped and tested on x86_64-unknown-linux-gnu, pushed.
2022-03-31 Richard Biener <rguent...@suse.de>
PR rtl-optimization/105091
* gimple-expr.cc (mark_addressable): Handle TARGET_MEM_REF
bases.
---
gcc/gimple-expr.cc | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/gcc/gimple-expr.cc b/gcc/gimple-expr.cc
index f9a650b5daf..5faaf43eaf5 100644
--- a/gcc/gimple-expr.cc
+++ b/gcc/gimple-expr.cc
@@ -910,7 +910,8 @@ mark_addressable (tree x)
x = TREE_OPERAND (x, 0);
while (handled_component_p (x))
x = TREE_OPERAND (x, 0);
- if (TREE_CODE (x) == MEM_REF
+ if ((TREE_CODE (x) == MEM_REF
+ || TREE_CODE (x) == TARGET_MEM_REF)
&& TREE_CODE (TREE_OPERAND (x, 0)) == ADDR_EXPR)
x = TREE_OPERAND (TREE_OPERAND (x, 0), 0);
if (!VAR_P (x)
--
2.34.1
