mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-29 10:32:47 +00:00
32 lines
864 B
LLVM
32 lines
864 B
LLVM
|
; This testcase is due to tail-duplication not wanting to copy the return
|
||
|
|
; instruction into the terminating blocks because there was other code
|
||
|
|
; optimized out of the function after the taildup happened.
|
||
|
|
|
||
|
|
; RUN: llvm-as < %s | opt -tailcallelim | llvm-dis | not grep call
|
||
|
|
|
||
|
|
int %t4(int %a) {
|
||
|
|
entry:
|
||
|
|
%tmp.1 = and int %a, 1
|
||
|
|
%tmp.2 = cast int %tmp.1 to bool
|
||
|
|
br bool %tmp.2, label %then.0, label %else.0
|
||
|
|
|
||
|
|
then.0:
|
||
|
|
%tmp.5 = add int %a, -1
|
||
|
|
%tmp.3 = call int %t4( int %tmp.5 )
|
||
|
|
br label %return
|
||
|
|
|
||
|
|
else.0:
|
||
|
|
%tmp.7 = setne int %a, 0
|
||
|
|
br bool %tmp.7, label %then.1, label %return
|
||
|
|
|
||
|
|
then.1:
|
||
|
|
%tmp.11 = add int %a, -2
|
||
|
|
%tmp.9 = call int %t4( int %tmp.11 )
|
||
|
|
br label %return
|
||
|
|
|
||
|
|
return:
|
||
|
|
%result.0 = phi int [ 0, %else.0 ], [ %tmp.3, %then.0 ], [ %tmp.9, %then.1 ]
|
||
|
|
ret int %result.0
|
||
|
|
}
|
||
|
|
|