; RUN: llvm-as < %s | opt -simplify-libcalls | llvm-dis | not grep 'call.*pow'

declare double %pow(double,double)
%fpstorage = global double 5.0

implementation   ; Functions:

int %main () {
  %fpnum = load double* %fpstorage;
  %one = call double %pow(double 1.0, double %fpnum)
  %two = call double %pow(double %one, double 0.5)
  %three = call double %pow(double %two, double 1.0)
  %four = call double %pow(double %three, double -1.0)
  %five = call double %pow(double %four, double 0.0)
  %result = cast double %five to int
  ret int %result
}


Update comments to be actually accurate
; Testcase for calls to the standard C "pow" function
;
; Equivalent to: http://gcc.gnu.org/ml/gcc-patches/2003-02/msg01786.html
; RUN: llvm-as < %s | opt -simplify-libcalls -disable-output &&
; RUN: llvm-as < %s | opt -simplify-libcalls | llvm-dis | not grep 'call double .pow'

declare double %pow(double, double)

double %test1(double %X) {
	%Y = call double %pow(double %X, double 0.0)
	ret double %Y    ; x^0.0 always equals 1.0
}

double %test2(double %X) {
	%Y = call double %pow(double %X, double -0.0)
	ret double %Y    ; x^-0.0 always equals 1.0
}

double %test3(double %X) {
	%Y = call double %pow(double 1.0, double %X)
	ret double %Y    ; 1.0^x always equals 1.0
}