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| author | Martin Liska <mliska@suse.cz> | 2014-11-07 13:35:43 +0100 |
|---|---|---|
| committer | Martin Liska <marxin@gcc.gnu.org> | 2014-11-07 12:35:43 +0000 |
| commit | fdaaeea1b61b60c0b76a657d7557a34c3e7b5186 (patch) | |
| tree | 44271cd0fb5a71b824811bdca1bbf30dff0728b8 /gcc | |
| parent | 8c14c817f30b966f509636b96d4e5586261a258b (diff) | |
| download | gcc-fdaaeea1b61b60c0b76a657d7557a34c3e7b5186.zip gcc-fdaaeea1b61b60c0b76a657d7557a34c3e7b5186.tar.gz gcc-fdaaeea1b61b60c0b76a657d7557a34c3e7b5186.tar.bz2 | |
re PR tree-optimization/63747 (icf mis-compares switch gimple)
PR ipa/63747
* gcc.dg/ipa/pr63747.c: New test.
* ipa-icf-gimple.c (func_checker::compare_gimple_switch):
Missing checking for CASE_LOW and CASE_HIGH added.
From-SVN: r217219
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/ipa-icf-gimple.c | 13 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/ipa/pr63747.c | 40 |
4 files changed, 64 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 6fc91b5..6e721a6 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,11 @@ 2014-11-07 Martin Liska <mliska@suse.cz> + PR ipa/63747 + * ipa-icf-gimple.c (func_checker::compare_gimple_switch): + Missing checking for CASE_LOW and CASE_HIGH added. + +2014-11-07 Martin Liska <mliska@suse.cz> + PR ipa/63595 * cgraphunit.c (cgraph_node::expand_thunk): DECL_BY_REFERENCE is correctly handled for thunks created by IPA ICF. diff --git a/gcc/ipa-icf-gimple.c b/gcc/ipa-icf-gimple.c index ecb9667..75b5cfb 100644 --- a/gcc/ipa-icf-gimple.c +++ b/gcc/ipa-icf-gimple.c @@ -798,6 +798,19 @@ func_checker::compare_gimple_switch (gimple g1, gimple g2) tree label1 = gimple_switch_label (g1, i); tree label2 = gimple_switch_label (g2, i); + /* Label LOW and HIGH comparison. */ + tree low1 = CASE_LOW (label1); + tree low2 = CASE_LOW (label2); + + if (!tree_int_cst_equal (low1, low2)) + return return_false_with_msg ("case low values are different"); + + tree high1 = CASE_HIGH (label1); + tree high2 = CASE_HIGH (label2); + + if (!tree_int_cst_equal (high1, high2)) + return return_false_with_msg ("case high values are different"); + if (TREE_CODE (label1) == CASE_LABEL_EXPR && TREE_CODE (label2) == CASE_LABEL_EXPR) { diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 8575ba3..036d59d3 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,5 +1,10 @@ 2014-11-07 Martin Liska <mliska@suse.cz> + PR ipa/63747 + * gcc.dg/ipa/pr63747.c: New test. + +2014-11-07 Martin Liska <mliska@suse.cz> + PR ipa/63595 * g++.dg/ipa/pr63595.C: New test. diff --git a/gcc/testsuite/gcc.dg/ipa/pr63747.c b/gcc/testsuite/gcc.dg/ipa/pr63747.c new file mode 100644 index 0000000..7b5df4b --- /dev/null +++ b/gcc/testsuite/gcc.dg/ipa/pr63747.c @@ -0,0 +1,40 @@ +/* { dg-options "-O2 -fdump-ipa-icf" } */ +/* { dg-do run } */ + +static int __attribute__((noinline)) +foo(int i) +{ + switch (i) + { + case 0: + case 1: + case 2: + case 3: + return 0; + default: + return 1; + } +} + +static int __attribute__((noinline)) +bar(int i) +{ + switch (i) + { + case 4: + case 5: + case 6: + case 7: + return 0; + default: + return 1; + } +} + +int main() +{ + return foo(0) + bar(4); +} + +/* { dg-final { scan-ipa-dump "Equal symbols: 0" "icf" } } */ +/* { dg-final { cleanup-ipa-dump "icf" } } */ |