https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68264
Bug ID: 68264
Summary: tree-call-cdce wrongly uses ordered comparisons
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: jsm28 at gcc dot gnu.org
Target Milestone: ---
When tree-call-cdce.c:gen_conditions_for_domain generates comparisons to test
if a function argument is within a range for which errno cannot be set, it uses
ordered comparisons LT_EXPR LE_EXPR GT_EXPR GE_EXPR. But these will raise
"invalid" for quiet NaNs, when the functions should generally return a quiet
NaN with no exceptions raised. Unordered comparisons should be used instead.
