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| author | Bernd Edlinger <bernd.edlinger@hotmail.de> | 2019-08-28 10:18:23 +0000 |
|---|---|---|
| committer | Bernd Edlinger <edlinger@gcc.gnu.org> | 2019-08-28 10:18:23 +0000 |
| commit | 70cdb21e579191fe9f0f1d45e328908e59c0179e (patch) | |
| tree | 87bd6c87d5f7ac587e7732bc7828111ec593e9ed /gcc/varasm.c | |
| parent | e62506f36294bc26b9a64bcfd2464464ef784b72 (diff) | |
| download | gcc-70cdb21e579191fe9f0f1d45e328908e59c0179e.zip gcc-70cdb21e579191fe9f0f1d45e328908e59c0179e.tar.gz gcc-70cdb21e579191fe9f0f1d45e328908e59c0179e.tar.bz2 | |
expr.c (expand_assignment): Handle misaligned DECLs.
2019-09-28 Bernd Edlinger <bernd.edlinger@hotmail.de>
Richard Biener <rguenther@suse.de>
* expr.c (expand_assignment): Handle misaligned DECLs.
(expand_expr_real_1): Handle FUNCTION_DECL as unaligned.
* function.c (assign_parm_adjust_stack_rtl): Check movmisalign optab
too.
(assign_parm_setup_stack): Allocate properly aligned stack slots.
* varasm.c (build_constant_desc): Align constants of misaligned types.
* config/arm/predicates.md (aligned_operand): New predicate.
* config/arm/arm.md (movdi, movsi, movhi, movhf, movsf, movdf): Use
aligned_operand to check restrictions on memory addresses.
* config/arm/neon.md (movti, mov<VSTRUCT>, mov<VH>): Likewise.
* config/arm/vec-common.md (mov<VALL>): Likewise.
Co-Authored-By: Richard Biener <rguenther@suse.de>
From-SVN: r274986
Diffstat (limited to 'gcc/varasm.c')
| -rw-r--r-- | gcc/varasm.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/gcc/varasm.c b/gcc/varasm.c index ae25f4d..a7c2252 100644 --- a/gcc/varasm.c +++ b/gcc/varasm.c @@ -47,6 +47,7 @@ along with GCC; see the file COPYING3. If not see #include "stmt.h" #include "expr.h" #include "expmed.h" +#include "optabs.h" #include "output.h" #include "langhooks.h" #include "debug.h" @@ -3386,7 +3387,15 @@ build_constant_desc (tree exp) if (TREE_CODE (exp) == STRING_CST) SET_DECL_ALIGN (decl, targetm.constant_alignment (exp, DECL_ALIGN (decl))); else - align_variable (decl, 0); + { + align_variable (decl, 0); + if (DECL_ALIGN (decl) < GET_MODE_ALIGNMENT (DECL_MODE (decl)) + && ((optab_handler (movmisalign_optab, DECL_MODE (decl)) + != CODE_FOR_nothing) + || targetm.slow_unaligned_access (DECL_MODE (decl), + DECL_ALIGN (decl)))) + SET_DECL_ALIGN (decl, GET_MODE_ALIGNMENT (DECL_MODE (decl))); + } /* Now construct the SYMBOL_REF and the MEM. */ if (use_object_blocks_p ()) |