llvm-mirror/test/CodeGen/CBackend/2004-02-15-PreexistingExternals.llx

; The intrinsic lowering pass was lowering intrinsics like llvm.memcpy to 
; explicitly specified prototypes, inserting a new function if the old one
; didn't exist.  This caused there to be two external memcpy functions in 
; this testcase for example, which caused the CBE to mangle one, screwing
; everything up.  :(  Test that this does not happen anymore.
;
; RUN: llvm-upgrade < %s | llvm-as | llc -march=c | not grep _memcpy

declare void %llvm.memcpy.i32(sbyte*, sbyte*, uint,uint)
declare float* %memcpy(int*, uint,int)

int %test(sbyte *%A, sbyte* %B, int* %C) {
	call float* %memcpy(int* %C, uint 4, int 17)
	call void %llvm.memcpy.i32(sbyte* %A, sbyte* %B, uint 123, uint 14)
	ret int 7
}