diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/pr101824.c | 19 | ||||
| -rw-r--r-- | gcc/tree-nested.c | 1 |
2 files changed, 20 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/pr101824.c b/gcc/testsuite/gcc.dg/tree-ssa/pr101824.c new file mode 100644 index 0000000..d5987e1 --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/pr101824.c @@ -0,0 +1,19 @@ +/* { dg-do compile } */ +/* { dg-options "-O3 -fdump-tree-pcom-details -fdump-tree-optimized" } */ + +int main() +{ + volatile int y; + void bar() + { + __builtin_printf ("%d", y); + } + while (y) + ; + return 0; +} + +/* Make sure the load from y is correctly interpreted as volatile, even + when going through FRAME. */ +/* { dg-final { scan-tree-dump-not "Executing predictive commoning" "pcom" } } */ +/* { dg-final { scan-tree-dump " ={v} FRAME" "optimized" } } */ diff --git a/gcc/tree-nested.c b/gcc/tree-nested.c index 0c3fb02..cc59526 100644 --- a/gcc/tree-nested.c +++ b/gcc/tree-nested.c @@ -1033,6 +1033,7 @@ get_frame_field (struct nesting_info *info, tree target_context, } x = build3 (COMPONENT_REF, TREE_TYPE (field), x, field, NULL_TREE); + TREE_THIS_VOLATILE (x) = TREE_THIS_VOLATILE (field); return x; } |