diff options
| author | J"orn Rennecke <joern.rennecke@superh.com> | 2004-01-16 18:43:04 +0000 |
|---|---|---|
| committer | Joern Rennecke <amylaar@gcc.gnu.org> | 2004-01-16 18:43:04 +0000 |
| commit | 71bbcf4d56ce5fb369d879702932b88447053be9 (patch) | |
| tree | 0fb32bf9ed5a82e02d4bde33fcec0c5eb76994df /gcc | |
| parent | 144e414d26bf3d2daff9456456cfd9abeb5cfcda (diff) | |
| download | gcc-71bbcf4d56ce5fb369d879702932b88447053be9.zip gcc-71bbcf4d56ce5fb369d879702932b88447053be9.tar.gz gcc-71bbcf4d56ce5fb369d879702932b88447053be9.tar.bz2 | |
re PR rtl-optimization/11864 (miscompiles zero extention and test)
PR 11864
From Kazumoto Kojima / Dan Kegel:
* gcc.dg/pr11864-1.c: New test.
From-SVN: r75987
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/testsuite/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/pr11864-1.c | 42 |
2 files changed, 46 insertions, 0 deletions
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 573156e..d23fe5d 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -5,6 +5,10 @@ 2004-01-16 J"orn Rennecke <joern.rennecke@superh.com> + PR 11864 + From Kazumoto Kojima / Dan Kegel: + * gcc.dg/pr11864-1.c: New test. + PR 10392 From Marcus Comstedt / Dan Kegel: * gcc.dg/pr10392-1.c: New test. diff --git a/gcc/testsuite/gcc.dg/pr11864-1.c b/gcc/testsuite/gcc.dg/pr11864-1.c new file mode 100644 index 0000000..b8d7134 --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr11864-1.c @@ -0,0 +1,42 @@ +/* PR optimization/11864 + * Reporter: Kazumoto Kojima <kkojima@gcc.gnu.org> + * Summary: [3.3/3.4 regression] miscompiles zero extension and test + * Description: + * gcc-3.3/3.4 -O2 for sh target may miscompile the combination of zero extension + * and test if it's zero. + * + * Testcase tweaked by dank@kegel.com. Not marked as xfail because it's a regression. + */ +/* { dg-do run } */ +/* { dg-options "-O2" } */ + +extern void abort(void); + +int val = 0xff00; + +int f(void) +{ + return val; +} + +unsigned char a[1]; + +void foo(void) +{ + a[0] = f() & 255; + + if (!a[0]) + a[0] = f() & 255; + + if (!a[0]) + a[0] = 1 + (f() & 127); +} + +int main(int argc, char **argv) +{ + foo(); + if (!a[0]) + abort(); + + return 0; +} |