llvm-project/llvm/test/CodeGen/CBackend/2004-02-26-FPNotPrintableConstants.llx

; This is a non-normal FP value
; RUN: llvm-upgrade < %s | llvm-as | llc -march=c | grep FPConstant | grep static

float %func () {
  ret float 0xFFF0000000000000  ; -inf
}

double %func2() {
  ret double 0xFF20000000000000  ; -inf
}