mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-10-30 16:17:05 +00:00
b7c0b246da
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81545 91177308-0d34-0410-b5e6-96231b3b80d8
26 lines
932 B
LLVM
26 lines
932 B
LLVM
; This function contains two tail calls, which should be eliminated
|
|
; RUN: opt < %s -tailcallelim -stats -disable-output |& grep {2 tailcallelim}
|
|
|
|
define i32 @Ack(i32 %M.1, i32 %N.1) {
|
|
entry:
|
|
%tmp.1 = icmp eq i32 %M.1, 0 ; <i1> [#uses=1]
|
|
br i1 %tmp.1, label %then.0, label %endif.0
|
|
then.0: ; preds = %entry
|
|
%tmp.4 = add i32 %N.1, 1 ; <i32> [#uses=1]
|
|
ret i32 %tmp.4
|
|
endif.0: ; preds = %entry
|
|
%tmp.6 = icmp eq i32 %N.1, 0 ; <i1> [#uses=1]
|
|
br i1 %tmp.6, label %then.1, label %endif.1
|
|
then.1: ; preds = %endif.0
|
|
%tmp.10 = add i32 %M.1, -1 ; <i32> [#uses=1]
|
|
%tmp.8 = call i32 @Ack( i32 %tmp.10, i32 1 ) ; <i32> [#uses=1]
|
|
ret i32 %tmp.8
|
|
endif.1: ; preds = %endif.0
|
|
%tmp.13 = add i32 %M.1, -1 ; <i32> [#uses=1]
|
|
%tmp.17 = add i32 %N.1, -1 ; <i32> [#uses=1]
|
|
%tmp.14 = call i32 @Ack( i32 %M.1, i32 %tmp.17 ) ; <i32> [#uses=1]
|
|
%tmp.11 = call i32 @Ack( i32 %tmp.13, i32 %tmp.14 ) ; <i32> [#uses=1]
|
|
ret i32 %tmp.11
|
|
}
|
|
|