https://llvm.org/bugs/show_bug.cgi?id=25212
Bug ID: 25212
Summary: IR declaration for complex library functions misses
sret
Product: clang
Version: unspecified
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: LLVM Codegen
Assignee: unassignedclangb...@nondot.org
Reporter: jo...@netbsd.org
CC: llvm-bugs@lists.llvm.org
Classification: Unclassified
Code like:
double _Complex mul_double_cc(double _Complex a, double _Complex b) {
return a * b;
}
will result in a declaration of __muldc3 or similar. On architectures that
don't pass the complex via registers, this declaration looks e.g. like:
declare void @__muldc3({ double, double }*, double, double, double, double)
This is missing the sret attribute on the first argument.
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