http://d.puremagic.com/issues/show_bug.cgi?id=9863
Summary: Incorrect generation of SAHF instruction on 64 bits
Product: D
Version: D1 & D2
Platform: x86_64
OS/Version: All
Status: NEW
Severity: normal
Priority: P2
Component: DMD
AssignedTo: [email protected]
ReportedBy: [email protected]
--- Comment #0 from Walter Bright <[email protected]> 2013-04-02
12:21:12 PDT ---
The SAHF instruction does not exist on early 64 bit CPUs, so dmd should not
generate it. Example code that does:
bool foo(creal c)
{
return c != 0;
}
This will cause an illegal instruction fault on older 64 bit CPUs.
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