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-rw-r--r--gcc/rtlanal.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/gcc/rtlanal.c b/gcc/rtlanal.c
index 88b49fe649e..073f37c438c 100644
--- a/gcc/rtlanal.c
+++ b/gcc/rtlanal.c
@@ -1947,8 +1947,16 @@ may_trap_p (x)
certainly may trap. */
return 1;
+ case GE:
+ case GT:
+ case LE:
+ case LT:
case COMPARE:
- /* Any floating comparison may trap. */
+ /* Some floating point comparisons may trap. */
+ /* ??? There is no machine independent way to check for tests that trap
+ when COMPARE is used, though many targets do make this distinction.
+ For instance, sparc uses CCFPE for compares which generate exceptions
+ and CCFP for compares which do not generate exceptions. */
if (GET_MODE_CLASS (GET_MODE (x)) == MODE_FLOAT)
return 1;
/* But often the compare has some CC mode, so check operand
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