[llvm-commits] CVS: llvm/test/Regression/Transforms/TailCallElim/ackermann.ll

[Chris Lattner]

Changes in directory llvm/test/Regression/Transforms/TailCallElim:

ackermann.ll added (r1.1)

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Log message:

New testcase


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Diffs of the changes:

Index: llvm/test/Regression/Transforms/TailCallElim/ackermann.ll
diff -c /dev/null llvm/test/Regression/Transforms/TailCallElim/ackermann.ll:1.1
*** /dev/null	Sat Sep 20 00:03:04 2003
--- llvm/test/Regression/Transforms/TailCallElim/ackermann.ll	Sat Sep 20 00:02:54 2003
***************
*** 0 ****
--- 1,29 ----
+ ; This function contains two tail calls, which should be eliminated
+ ; RUN: llvm-as < %s | opt -tailcallelim -stats -disable-output 2>&1 | grep '2 tailcallelim'
+ 
+ int %Ack(int %M.1, int %N.1) {
+ entry:
+         %tmp.1 = seteq int %M.1, 0              ; <bool> [#uses=1]
+         br bool %tmp.1, label %then.0, label %endif.0
+ 
+ then.0:
+         %tmp.4 = add int %N.1, 1                ; <int> [#uses=1]
+         ret int %tmp.4
+ 
+ endif.0:
+         %tmp.6 = seteq int %N.1, 0              ; <bool> [#uses=1]
+         br bool %tmp.6, label %then.1, label %endif.1
+ 
+ then.1:
+         %tmp.10 = add int %M.1, -1              ; <int> [#uses=1]
+         %tmp.8 = call int %Ack( int %tmp.10, int 1 )            ; <int> [#uses=1]
+         ret int %tmp.8
+ 
+ endif.1:
+         %tmp.13 = add int %M.1, -1              ; <int> [#uses=1]
+         %tmp.17 = add int %N.1, -1              ; <int> [#uses=1]
+         %tmp.14 = call int %Ack( int %M.1, int %tmp.17 )                ; <int> [#uses=1]
+         %tmp.11 = call int %Ack( int %tmp.13, int %tmp.14 )             ; <int> [#uses=1]
+         ret int %tmp.11
+ }
+