diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/pr94001.c | 11 | ||||
| -rw-r--r-- | gcc/tree-tailcall.c | 3 |
4 files changed, 24 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 42f417a..caa854d 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2020-03-04 Jakub Jelinek <jakub@redhat.com> + + PR tree-optimization/94001 + * tree-tailcall.c (process_assignment): Before comparing op1 to + *ass_var, verify *ass_var is non-NULL. + 2020-03-04 Kito Cheng <kito.cheng@sifive.com> PR target/93995 diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index cd519f4..a13a0a4 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2020-03-04 Jakub Jelinek <jakub@redhat.com> + + PR tree-optimization/94001 + * gcc.dg/pr94001.c: New test. + 2020-03-04 Kito Cheng <kito.cheng@sifive.com> PR target/93995 diff --git a/gcc/testsuite/gcc.dg/pr94001.c b/gcc/testsuite/gcc.dg/pr94001.c new file mode 100644 index 0000000..f83873f --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr94001.c @@ -0,0 +1,11 @@ +/* PR tree-optimization/94001 */ +/* { dg-do compile } */ +/* { dg-options "-O2 -fno-tree-dce" } */ + +void +bar (int e) +{ + bar (3); + int c; + c = -e; +} diff --git a/gcc/tree-tailcall.c b/gcc/tree-tailcall.c index 9ffe739..d81e921 100644 --- a/gcc/tree-tailcall.c +++ b/gcc/tree-tailcall.c @@ -339,7 +339,8 @@ process_assignment (gassign *stmt, && (non_ass_var = independent_of_stmt_p (op1, stmt, call, to_move))) ; - else if (op1 == *ass_var + else if (*ass_var + && op1 == *ass_var && (non_ass_var = independent_of_stmt_p (op0, stmt, call, to_move))) ; |