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| author | H.J. Lu <hongjiu.lu@intel.com> | 2011-04-14 17:10:24 +0000 |
|---|---|---|
| committer | H.J. Lu <hjl@gcc.gnu.org> | 2011-04-14 10:10:24 -0700 |
| commit | 6f19785029f4aa8cf9f78fbd9bd446ba990f4a78 (patch) | |
| tree | 1bdafddaa9abbcb7ff7c12c2bc68d82a2bc5d73b /gcc/cfgexpand.c | |
| parent | 545f261bef70b517ea65b5a827444c41b4bba4cd (diff) | |
| download | gcc-6f19785029f4aa8cf9f78fbd9bd446ba990f4a78.zip gcc-6f19785029f4aa8cf9f78fbd9bd446ba990f4a78.tar.gz gcc-6f19785029f4aa8cf9f78fbd9bd446ba990f4a78.tar.bz2 | |
Update alignment on local variables.
2011-04-14 H.J. Lu <hongjiu.lu@intel.com>
PR middle-end/48608
* cfgexpand.c (get_decl_align_unit): Renamed to ...
(align_local_variable): This. Update DECL_ALIGN.
(add_stack_var): Updated.
(expand_one_stack_var): Likewise.
From-SVN: r172438
Diffstat (limited to 'gcc/cfgexpand.c')
| -rw-r--r-- | gcc/cfgexpand.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/gcc/cfgexpand.c b/gcc/cfgexpand.c index cc1382f..d84c57e 100644 --- a/gcc/cfgexpand.c +++ b/gcc/cfgexpand.c @@ -205,13 +205,14 @@ 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 +/* Compute 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) +align_local_variable (tree decl) { unsigned int align = LOCAL_DECL_ALIGNMENT (decl); + DECL_ALIGN (decl) = align; return align / BITS_PER_UNIT; } @@ -273,7 +274,7 @@ add_stack_var (tree decl) variables that are simultaneously live. */ if (v->size == 0) v->size = 1; - v->alignb = get_decl_align_unit (SSAVAR (decl)); + v->alignb = align_local_variable (SSAVAR (decl)); /* All variables are initially in their own partition. */ v->representative = stack_vars_num; @@ -905,7 +906,7 @@ expand_one_stack_var (tree var) unsigned byte_align; size = tree_low_cst (DECL_SIZE_UNIT (SSAVAR (var)), 1); - byte_align = get_decl_align_unit (SSAVAR (var)); + byte_align = align_local_variable (SSAVAR (var)); /* We handle highly aligned variables in expand_stack_vars. */ gcc_assert (byte_align * BITS_PER_UNIT <= MAX_SUPPORTED_STACK_ALIGNMENT); |