digitalmars.D.bugs - [Issue 21816] New: testing XMM for nan does not work
- d-bugmail puremagic.com (35/35) Apr 10 2021 https://issues.dlang.org/show_bug.cgi?id=21816
https://issues.dlang.org/show_bug.cgi?id=21816 Issue ID: 21816 Summary: testing XMM for nan does not work Product: D Version: D2 Hardware: All OS: All Status: NEW Severity: normal Priority: P1 Component: dmd Assignee: nobody puremagic.com Reporter: bugzilla digitalmars.com The following fails the assert: bool testf(float t) { return cast(bool)t; } void test3918() { assert(testf(float.nan)); } int main() { test3918(); return 0; } when compiling with -O for XMM. The generated code is: xorps XMM1,XMM1 ucomiss XMM1,XMM0 jne LC (*) jp LC xor EAX,EAX jmp short L11 LC: mov EAX,1 L11: ret The (*) instruction is missing. --
Apr 10 2021