[llvm-commits] CVS: llvm/test/Regression/Transforms/LoopStrengthReduce/dont-hoist-simple-loop-constants.ll

[Chris Lattner]

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

dont-hoist-simple-loop-constants.ll added (r1.1)
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Log message:

new testcase


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Diffs of the changes:  (+24 -0)

 dont-hoist-simple-loop-constants.ll |   24 ++++++++++++++++++++++++
 1 files changed, 24 insertions(+)


Index: llvm/test/Regression/Transforms/LoopStrengthReduce/dont-hoist-simple-loop-constants.ll
diff -c /dev/null llvm/test/Regression/Transforms/LoopStrengthReduce/dont-hoist-simple-loop-constants.ll:1.1
*** /dev/null	Fri Sep  9 20:14:47 2005
--- llvm/test/Regression/Transforms/LoopStrengthReduce/dont-hoist-simple-loop-constants.ll	Fri Sep  9 20:14:37 2005
***************
*** 0 ****
--- 1,24 ----
+ ; RUN: llvm-as < %s | opt -loop-reduce | llvm-dis | not grep 'cast uint 1 to uint'
+ ; The setlt wants to use a value that is incremented one more than the dominant
+ ; IV.  Don't insert the 1 outside the loop, preventing folding it into the add.
+ 
+ implementation   ; Functions:
+ 
+ void %test([700 x int]* %nbeaux_.0__558, int* %i_.16574) {
+ then.0:
+         br label %no_exit.2
+ 
+ no_exit.2:              ; preds = %no_exit.2, %then.0
+         %indvar630 = phi uint [ 0, %then.0 ], [ %indvar.next631, %no_exit.2 ]           ; <uint> [#uses=3]
+         %indvar630 = cast uint %indvar630 to int                ; <int> [#uses=1]
+         %tmp.38 = getelementptr [700 x int]* %nbeaux_.0__558, int 0, uint %indvar630            ; <int*> [#uses=1]
+         store int 0, int* %tmp.38
+         %inc.2 = add int %indvar630, 2          ; <int> [#uses=2]
+         %tmp.34 = setlt int %inc.2, 701         ; <bool> [#uses=1]
+         %indvar.next631 = add uint %indvar630, 1                ; <uint> [#uses=1]
+         br bool %tmp.34, label %no_exit.2, label %loopexit.2.loopexit
+ 
+ loopexit.2.loopexit:            ; preds = %no_exit.2
+         store int %inc.2, int* %i_.16574
+         ret void
+ }