https://bugs.llvm.org/show_bug.cgi?id=41613
Bug ID: 41613
Summary: Function multiversioning doesn't support function
templates
Product: clang
Version: 8.0
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: C++
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected],
[email protected], [email protected],
[email protected]
Created attachment 21825
--> https://bugs.llvm.org/attachment.cgi?id=21825&action=edit
Templated function multiversioning
Hey,
Function multiversioning doesn't seem to support function templates. AFAIK
there was some discussion about it where function templates were left out of
the implementation as it didn't work in gcc back then:
https://reviews.llvm.org/D51650
The example code attached fails to compile with:
clang++ test.cpp
test.cpp:7:39: error: attribute 'target' multiversioned functions do not yet
support function templates
__attribute__ ((target("default"))) T foo(T num) {
^
To be fair, GCC still doesn't do that (yet) but I have opened a bug report over
there as well: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90260
Are there plans to support this?
Cheers,
Nick
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