diff options
Diffstat (limited to 'gcc/calls.c')
| -rw-r--r-- | gcc/calls.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/gcc/calls.c b/gcc/calls.c index 5892cba4ce1..3561f5987f4 100644 --- a/gcc/calls.c +++ b/gcc/calls.c @@ -1595,6 +1595,13 @@ compute_argument_addresses (args, argblock, num_actuals) args[i].stack_slot = gen_rtx_MEM (args[i].mode, addr); set_mem_attributes (args[i].stack_slot, TREE_TYPE (args[i].tree_value), 1); + + /* Function incoming arguments may overlap with sibling call + outgoing arguments and we cannot allow reordering of reads + from function arguments with stores to outgoing arguments + of sibling calls. */ + MEM_ALIAS_SET (args[i].stack) = 0; + MEM_ALIAS_SET (args[i].stack_slot) = 0; } } } |