File: ackermann.ll

package info (click to toggle)
llvm-2.7 2.7-6
  • links: PTS
  • area: main
  • in suites: squeeze
  • size: 59,992 kB
  • ctags: 49,499
  • sloc: cpp: 373,792; ansic: 16,885; sh: 12,614; asm: 6,809; ada: 3,083; ml: 2,942; python: 2,671; perl: 2,404; makefile: 1,691; pascal: 1,235; exp: 399; objc: 291; lisp: 184; csh: 117; xml: 38; f90: 36
file content (25 lines) | stat: -rw-r--r-- 932 bytes parent folder | download | duplicates (4) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
 
; 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
}