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| author | Jakub Jelinek <jakub@redhat.com> | 2018-03-08 07:56:59 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2018-03-08 07:56:59 +0100 |
| commit | 686faaece353242d733dec4eb47647ef0ae1335f (patch) | |
| tree | ad47591876053c5ce660972384957cf9d2935ea7 /gcc | |
| parent | fe6bd21a0bda55abf859223648f31710772eb1eb (diff) | |
| download | gcc-686faaece353242d733dec4eb47647ef0ae1335f.zip gcc-686faaece353242d733dec4eb47647ef0ae1335f.tar.gz gcc-686faaece353242d733dec4eb47647ef0ae1335f.tar.bz2 | |
re PR tree-optimization/84739 (ICE in get_value_for_expr, at tree-ssa-ccp.c:649)
PR tree-optimization/84739
* tree-tailcall.c (find_tail_calls): Check call arguments against
DECL_ARGUMENTS (current_function_decl) rather than
DECL_ARGUMENTS (func) when checking for tail recursion.
* gcc.dg/pr84739.c: New test.
From-SVN: r258351
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/pr84739.c | 26 | ||||
| -rw-r--r-- | gcc/tree-tailcall.c | 2 |
4 files changed, 39 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 9c7dd74..c96e895 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2018-03-08 Jakub Jelinek <jakub@redhat.com> + + PR tree-optimization/84739 + * tree-tailcall.c (find_tail_calls): Check call arguments against + DECL_ARGUMENTS (current_function_decl) rather than + DECL_ARGUMENTS (func) when checking for tail recursion. + 2018-03-07 Jakub Jelinek <jakub@redhat.com> * doc/contrib.texi: Add entries for Martin Liska, David Malcolm, diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index a6f89e1..3f0ac96 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2018-03-08 Jakub Jelinek <jakub@redhat.com> + + PR tree-optimization/84739 + * gcc.dg/pr84739.c: New test. + 2018-03-07 Martin Sebor <msebor@redhat.com> PR tree-optimization/83519 diff --git a/gcc/testsuite/gcc.dg/pr84739.c b/gcc/testsuite/gcc.dg/pr84739.c new file mode 100644 index 0000000..6903425 --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr84739.c @@ -0,0 +1,26 @@ +/* PR tree-optimization/84739 */ +/* { dg-do compile } */ +/* { dg-require-weak "" } */ +/* { dg-options "-O2" } */ + +static void baz (void) __attribute__((weakref("bar"))); /* { dg-warning "alias between functions of incompatible types" } */ + +int +foo (int x, int y) +{ + if (x) + y = 0; + if (y) + goto lab; + y = 0; +lab: + return y; +} + +void +bar (int x, int y) /* { dg-message "aliased declaration here" } */ +{ + y = foo (x, y); + if (y != 0) + baz (); +} diff --git a/gcc/tree-tailcall.c b/gcc/tree-tailcall.c index 4e309cd..9ebed9d 100644 --- a/gcc/tree-tailcall.c +++ b/gcc/tree-tailcall.c @@ -481,7 +481,7 @@ find_tail_calls (basic_block bb, struct tailcall **ret) { tree arg; - for (param = DECL_ARGUMENTS (func), idx = 0; + for (param = DECL_ARGUMENTS (current_function_decl), idx = 0; param && idx < gimple_call_num_args (call); param = DECL_CHAIN (param), idx ++) { |