diff options
| -rw-r--r-- | gcc/config/aarch64/aarch64.cc | 15 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/torture/pr108910.c | 8 |
2 files changed, 22 insertions, 1 deletions
diff --git a/gcc/config/aarch64/aarch64.cc b/gcc/config/aarch64/aarch64.cc index 42617ce..f4ef22c 100644 --- a/gcc/config/aarch64/aarch64.cc +++ b/gcc/config/aarch64/aarch64.cc @@ -7484,7 +7484,20 @@ aarch64_function_arg_alignment (machine_mode mode, const_tree type, gcc_assert (TYPE_MODE (type) == mode); if (!AGGREGATE_TYPE_P (type)) - return TYPE_ALIGN (TYPE_MAIN_VARIANT (type)); + { + /* The ABI alignment is the natural alignment of the type, without + any attributes applied. Normally this is the alignment of the + TYPE_MAIN_VARIANT, but not always; see PR108910 for a counterexample. + For now we just handle the known exceptions explicitly. */ + type = TYPE_MAIN_VARIANT (type); + if (POINTER_TYPE_P (type)) + { + gcc_assert (known_eq (POINTER_SIZE, GET_MODE_BITSIZE (mode))); + return POINTER_SIZE; + } + gcc_assert (!TYPE_USER_ALIGN (type)); + return TYPE_ALIGN (type); + } if (TREE_CODE (type) == ARRAY_TYPE) return TYPE_ALIGN (TREE_TYPE (type)); diff --git a/gcc/testsuite/gcc.dg/torture/pr108910.c b/gcc/testsuite/gcc.dg/torture/pr108910.c new file mode 100644 index 0000000..5973548 --- /dev/null +++ b/gcc/testsuite/gcc.dg/torture/pr108910.c @@ -0,0 +1,8 @@ +extern void foo (float, float *, float *); + +void +bar (void *p) +{ + float *__attribute__((aligned (64))) q = __builtin_assume_aligned (p, 64); + foo (0.0f, q, q); +} |