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| author | Jakub Jelinek <jakub@redhat.com> | 2019-01-17 09:05:12 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2019-01-17 09:05:12 +0100 |
| commit | cac1bd08d95de15815986b0b6ef7e82458d6bb25 (patch) | |
| tree | a45708459146e261d803f0b63bba8af4f4fec1eb /gcc | |
| parent | 9556b012b73024a95e72d8aa1b434ad50b8df9d3 (diff) | |
| download | gcc-cac1bd08d95de15815986b0b6ef7e82458d6bb25.zip gcc-cac1bd08d95de15815986b0b6ef7e82458d6bb25.tar.gz gcc-cac1bd08d95de15815986b0b6ef7e82458d6bb25.tar.bz2 | |
re PR tree-optimization/86214 (Strongly increased stack usage)
PR tree-optimization/86214
* cfgexpand.c (add_stack_var_conflict): Don't add any conflicts
if x == y.
From-SVN: r268009
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/cfgexpand.c | 2 |
2 files changed, 6 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 986a73d..170464a 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,9 @@ 2019-01-17 Jakub Jelinek <jakub@redhat.com> + PR tree-optimization/86214 + * cfgexpand.c (add_stack_var_conflict): Don't add any conflicts + if x == y. + PR rtl-optimization/88870 * dce.c (deletable_insn_p): Never delete const/pure calls that can throw if we can't alter the cfg or delete dead exceptions. diff --git a/gcc/cfgexpand.c b/gcc/cfgexpand.c index 2337c63..518d71c 100644 --- a/gcc/cfgexpand.c +++ b/gcc/cfgexpand.c @@ -470,6 +470,8 @@ add_stack_var_conflict (size_t x, size_t y) { struct stack_var *a = &stack_vars[x]; struct stack_var *b = &stack_vars[y]; + if (x == y) + return; if (!a->conflicts) a->conflicts = BITMAP_ALLOC (&stack_var_bitmap_obstack); if (!b->conflicts) |