diff options
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/cfgexpand.c | 31 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/torture/pr45678-2.c | 16 |
4 files changed, 48 insertions, 11 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index a900bda..3d2d377 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2010-09-17 H.J. Lu <hongjiu.lu@intel.com> + + PR middle-end/45678 + * cfgexpand.c (update_stack_alignment): New. + (get_decl_align_unit): Use it. + (expand_one_stack_var_at): Call update_stack_alignment. + 2010-09-17 Richard Guenther <rguenther@suse.de> * lto-streamer-in.c (lto_input_ts_translation_unit_decl_tree_pointers): diff --git a/gcc/cfgexpand.c b/gcc/cfgexpand.c index 4237276..1e67e77 100644 --- a/gcc/cfgexpand.c +++ b/gcc/cfgexpand.c @@ -205,19 +205,11 @@ static bool has_protected_decls; smaller than our cutoff threshold. Used for -Wstack-protector. */ static bool has_short_buffer; -/* Discover the byte alignment to use for DECL. Ignore alignment - we can't do with expected alignment of the stack boundary. */ +/* Update stack alignment requirement. */ -static unsigned int -get_decl_align_unit (tree decl) +static void +update_stack_alignment (unsigned int align) { - unsigned int align; - - align = LOCAL_DECL_ALIGNMENT (decl); - - if (align > MAX_SUPPORTED_STACK_ALIGNMENT) - align = MAX_SUPPORTED_STACK_ALIGNMENT; - if (SUPPORTS_STACK_ALIGNMENT) { if (crtl->stack_alignment_estimated < align) @@ -233,6 +225,22 @@ get_decl_align_unit (tree decl) crtl->stack_alignment_needed = align; if (crtl->max_used_stack_slot_alignment < align) crtl->max_used_stack_slot_alignment = align; +} + +/* Discover the byte alignment to use for DECL. Ignore alignment + we can't do with expected alignment of the stack boundary. */ + +static unsigned int +get_decl_align_unit (tree decl) +{ + unsigned int align; + + align = LOCAL_DECL_ALIGNMENT (decl); + + if (align > MAX_SUPPORTED_STACK_ALIGNMENT) + align = MAX_SUPPORTED_STACK_ALIGNMENT; + + update_stack_alignment (align); return align / BITS_PER_UNIT; } @@ -735,6 +743,7 @@ expand_one_stack_var_at (tree decl, HOST_WIDE_INT offset) if (align == 0 || align > max_align) align = max_align; + update_stack_alignment (align); DECL_ALIGN (decl) = align; DECL_USER_ALIGN (decl) = 0; } diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index e31952d..1552fa1 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2010-09-17 H.J. Lu <hongjiu.lu@intel.com> + + PR middle-end/45678 + * gcc.dg/torture/pr45678-2.c: New. + 2010-09-17 Richard Guenther <rguenther@suse.de> PR middle-end/45678 diff --git a/gcc/testsuite/gcc.dg/torture/pr45678-2.c b/gcc/testsuite/gcc.dg/torture/pr45678-2.c new file mode 100644 index 0000000..449404c --- /dev/null +++ b/gcc/testsuite/gcc.dg/torture/pr45678-2.c @@ -0,0 +1,16 @@ +/* { dg-do run } */ + +typedef float V __attribute__ ((vector_size (16))); +V g; + +int +main () +{ + float d[4] = { 4, 3, 2, 1 }; + V e; + __builtin_memcpy (&e, &d, sizeof (d)); + V f = { 5, 15, 25, 35 }; + e = e * f; + g = e; + return 0; +} |