[LLVMbugs] [Bug 672] Indirect tail calls fail when register allocated is callee save

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.cs.uiuc.edu/bugs/show_bug.cgi?id=672

alex at inga.mit.edu changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|FIXED                       |



------- Additional Comments From alex at inga.mit.edu  2005-12-03 06:08 -------
;; something is still not right
; seg faults with: llvm-as < tail-break.ll | lli --enable-x86-fastcc
declare int %putchar(int)

int %main(){ 
 %f   = cast int (int, int*, int)* %check_tail to int*
 %res = tail call fastcc int %check_tail( int 10, int* %f,int 10)
 ret int %res
}

fastcc int %check_tail(int %x, int* %f, int %g) {
	%tmp1 = setgt int %x, 0
	br bool %tmp1, label %if-then, label %if-else

if-then:
	%fun_ptr = cast int* %f to int(int, int*, int)*	
	%arg1    = add int %x, -1
	call int %putchar(int 90)	
	%res = tail call fastcc int %fun_ptr( int %arg1, int * %f, int %g)
	ret int %res

if-else:
        ret int %x
}



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