diff options
| author | kazu <kazu@138bc75d-0d04-0410-961f-82ee72b054a4> | 2003-07-10 12:40:10 +0000 |
|---|---|---|
| committer | kazu <kazu@138bc75d-0d04-0410-961f-82ee72b054a4> | 2003-07-10 12:40:10 +0000 |
| commit | a4de562442491f4870d490fafeafd4d305ba4a3c (patch) | |
| tree | a8e19967fdd99d0fc53016195487b80ac8f20ece /gcc/testsuite/gcc.c-torture | |
| parent | 00ea394c37c227f4e347df07e6feec200285367f (diff) | |
| download | gcc-a4de562442491f4870d490fafeafd4d305ba4a3c.tar.gz | |
PR c/11449
* fold-const.c (sign_bit_p): Return EXP if VAL is the sign bit
of HOST_WIDE_INT.
(fold_single_bit_test): If sign_bit_p() fails, assume that the
bit being tested is not a sign bit.
PR c/11449
* gcc.c-torture/compile/20030707-1.c: New.
* config/h8300/h8300.md (a peephole2): New.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@69184 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/testsuite/gcc.c-torture')
| -rw-r--r-- | gcc/testsuite/gcc.c-torture/compile/20030707-1.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.c-torture/compile/20030707-1.c b/gcc/testsuite/gcc.c-torture/compile/20030707-1.c new file mode 100644 index 00000000000..8ce964512bf --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/compile/20030707-1.c @@ -0,0 +1,13 @@ +/* PR c/11449. */ + +/* sign_bit_p() in fold-const.c failed to notice that (int) 0x80000000 + was the sign bit of m. As a result, fold_single_bit_test() + returned ((unsigned int) m >> 31), and that was eventually passed + to invert_truthvalue(), which did not know how to handle + RROTATE_EXPR, causing an ICE. */ + +int +foo (int m) +{ + return !(m & ((int) 0x80000000)); +} |