January 06, 2021 [Issue 21527] New: Unnecessary store to memory in SIMD code | ||||
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https://issues.dlang.org/show_bug.cgi?id=21527 Issue ID: 21527 Summary: Unnecessary store to memory in SIMD code Product: D Version: D2 Hardware: All OS: All Status: NEW Severity: enhancement Priority: P1 Component: dmd Assignee: nobody@puremagic.com Reporter: bugzilla@digitalmars.com The following code: float f(float a, float b) { float c = a + b; float d = c - b; return d; } unnecessarily stores c into memory when it could be left in an XMM register. Compile with -m32 -O. -- |
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