[llvm-commits] CVS: llvm/test/Regression/Transforms/LoopStrengthReduce/dont_insert_redundant_ops.ll

[Chris Lattner]

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

dont_insert_redundant_ops.ll added (r1.1)
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Log message:

check that we only insert one phi node per loop


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Diffs of the changes:  (+42 -0)

 dont_insert_redundant_ops.ll |   42 ++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 42 insertions(+)


Index: llvm/test/Regression/Transforms/LoopStrengthReduce/dont_insert_redundant_ops.ll
diff -c /dev/null llvm/test/Regression/Transforms/LoopStrengthReduce/dont_insert_redundant_ops.ll:1.1
*** /dev/null	Sun Mar  6 16:23:41 2005
--- llvm/test/Regression/Transforms/LoopStrengthReduce/dont_insert_redundant_ops.ll	Sun Mar  6 16:23:31 2005
***************
*** 0 ****
--- 1,42 ----
+ ; Check that this test makes INDVAR and related stuff dead.
+ ; RUN: llvm-as < %s | opt -loop-reduce | llvm-dis | grep phi | wc -l | grep 2
+ 
+ declare bool %pred()
+ 
+ void %test({ int, int }* %P) {
+ 	br label %Loop
+ Loop:
+ 	%INDVAR = phi int [0, %0], [%INDVAR2, %Loop]
+ 
+ 	%gep1 = getelementptr { int, int}* %P, int %INDVAR, uint 0
+ 	store int 0, int* %gep1
+ 
+ 	%gep2 = getelementptr { int, int}* %P, int %INDVAR, uint 1
+ 	store int 0, int* %gep2
+ 
+ 	%INDVAR2 = add int %INDVAR, 1
+ 	%cond = call bool %pred()
+ 	br bool %cond, label %Loop, label %Out
+ Out:
+ 	ret void
+ }
+ 
+ declare bool %pred()
+ 
+ void %test([2 x int]* %P) {
+ 	br label %Loop
+ Loop:
+ 	%INDVAR = phi int [0, %0], [%INDVAR2, %Loop]
+ 
+ 	%gep1 = getelementptr [2 x int]* %P, int %INDVAR, uint 0
+ 	store int 0, int* %gep1
+ 
+ 	%gep2 = getelementptr [2 x int]* %P, int %INDVAR, uint 1
+ 	store int 0, int* %gep2
+ 
+ 	%INDVAR2 = add int %INDVAR, 1
+ 	%cond = call bool %pred()
+ 	br bool %cond, label %Loop, label %Out
+ Out:
+ 	ret void
+ }