diff options
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/expmed.c | 3 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/torture/pr37731-1.c | 17 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/torture/pr37731-2.c | 17 |
5 files changed, 48 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 5582866..18911a2 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2008-10-07 H.J. Lu <hongjiu.lu@intel.com> + + PR middle-end/37731 + * expmed.c (expand_mult): Properly check DImode constant in + CONST_DOUBLE. + 2008-10-07 Jakub Jelinek <jakub@redhat.com> PR debug/37738 diff --git a/gcc/expmed.c b/gcc/expmed.c index ae5ad0a..5e8d7f3 100644 --- a/gcc/expmed.c +++ b/gcc/expmed.c @@ -3075,7 +3075,8 @@ expand_mult (enum machine_mode mode, rtx op0, rtx op1, rtx target, { /* If we are multiplying in DImode, it may still be a win to try to work with shifts and adds. */ - if (CONST_DOUBLE_HIGH (op1) == 0) + if (CONST_DOUBLE_HIGH (op1) == 0 + && CONST_DOUBLE_LOW (op1) > 0) coeff = CONST_DOUBLE_LOW (op1); else if (CONST_DOUBLE_LOW (op1) == 0 && EXACT_POWER_OF_2_OR_ZERO_P (CONST_DOUBLE_HIGH (op1))) diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index d3fdf00..b33a77a 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,9 @@ +2008-10-07 H.J. Lu <hongjiu.lu@intel.com> + + PR middle-end/37731 + * gcc.dg/torture/pr37731-1.c: New. + * gcc.dg/torture/pr37731-2.c: Likewise. + 2008-10-07 Jakub Jelinek <jakub@redhat.com> PR debug/37738 diff --git a/gcc/testsuite/gcc.dg/torture/pr37731-1.c b/gcc/testsuite/gcc.dg/torture/pr37731-1.c new file mode 100644 index 0000000..5c156b1 --- /dev/null +++ b/gcc/testsuite/gcc.dg/torture/pr37731-1.c @@ -0,0 +1,17 @@ +/* { dg-do run } */ + +extern void abort (); + +unsigned long long xh = 1; + +int +main () +{ + unsigned long long yh = 0xffffffffull; + unsigned long long z = xh * yh; + + if (z != yh) + abort (); + + return 0; +} diff --git a/gcc/testsuite/gcc.dg/torture/pr37731-2.c b/gcc/testsuite/gcc.dg/torture/pr37731-2.c new file mode 100644 index 0000000..a7f8f1e --- /dev/null +++ b/gcc/testsuite/gcc.dg/torture/pr37731-2.c @@ -0,0 +1,17 @@ +/* { dg-do run } */ + +extern void abort (); + +long long xh = 1; + +int +main () +{ + long long yh = 0xffffffffll; + long long z = xh * yh; + + if (z != yh) + abort (); + + return 0; +} |