http://llvm.org/bugs/show_bug.cgi?id=20691
Bug ID: 20691
Summary: missing codegen for __builtin_signbitl for ppc_fp128
Product: clang
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: normal
Priority: P
Component: LLVM Codegen
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
nlewycky@ducttape:~$ cat signbit.c
int test1(float x) { return __builtin_signbitf(x); }
int test2(double x) { return __builtin_signbit(x); }
int test3(long double x) { return __builtin_signbitl(x); }
nlewycky@ducttape:~$ llvm/Debug+Asserts/bin/clang -target powerpc64-linux-gnu
signbit.c -flto -S -o -
signbit.c:3:35: error: cannot compile this builtin function yet
int test3(long double x) { return __builtin_signbitl(x); }
^~~~~~~~~~~~~~~~~~~~~
1 error generated.
This breaks std::signbit in libstdc++ 4.9's cmath header.
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