December 19, 2020 [Issue 21490] New: Front end detection logic for SSE4.1 is failing when using -O | ||||
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https://issues.dlang.org/show_bug.cgi?id=21490 Issue ID: 21490 Summary: Front end detection logic for SSE4.1 is failing when using -O Product: D Version: D2 Hardware: x86_64 OS: Linux Status: NEW Severity: normal Priority: P1 Component: dmd Assignee: nobody@puremagic.com Reporter: bugzilla@digitalmars.com Adding -O to test/runnable/testxmm.d results in a seg fault when testxmm is run because a PMULLD instruction is generated as a result of: static if (__traits(compiles, { v1 = v2 * v3; })) // SSE4.1 succeeding, yet my 64 bit linux box does not support that instruction. Weirdly, this only goes awry with -O. -- |
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