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

[Chris Lattner]

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

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

New testcase.


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Diffs of the changes:  (+48 -0)

 var_stride_used_by_compare.ll |   48 ++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 48 insertions(+)


Index: llvm/test/Regression/Transforms/LoopStrengthReduce/var_stride_used_by_compare.ll
diff -c /dev/null llvm/test/Regression/Transforms/LoopStrengthReduce/var_stride_used_by_compare.ll:1.1
*** /dev/null	Fri Nov 17 00:09:59 2006
--- llvm/test/Regression/Transforms/LoopStrengthReduce/var_stride_used_by_compare.ll	Fri Nov 17 00:09:49 2006
***************
*** 0 ****
--- 1,48 ----
+ ; RUN: llvm-as < %s | opt -loop-reduce | llvm-dis &&
+ 
+ ; Base should not be i*3, it should be i*2.
+ ; RUN: llvm-as < %s | opt -loop-reduce | llvm-dis | not grep 'mul.*%i, 3' &&
+ 
+ ; Indvar should not start at zero:
+ ; RUN: llvm-as < %s | opt -loop-reduce | llvm-dis | not grep 'phi uint .* 0'
+ 
+ ; mul uint %i, 3
+ 
+ ; ModuleID = 't.bc'
+ target datalayout = "e-p:32:32"
+ target endian = little
+ target pointersize = 32
+ target triple = "i686-apple-darwin8"
+ %flags2 = external global [8193 x sbyte], align 32		; <[8193 x sbyte]*> [#uses=1]
+ 
+ implementation   ; Functions:
+ 
+ void %foo(int %k, int %i) {
+ entry:
+ 	%i = cast int %i to uint		; <uint> [#uses=2]
+ 	%k_addr.012 = shl int %i, ubyte 1		; <int> [#uses=1]
+ 	%tmp14 = setgt int %k_addr.012, 8192		; <bool> [#uses=1]
+ 	br bool %tmp14, label %return, label %bb.preheader
+ 
+ bb.preheader:		; preds = %entry
+ 	%tmp. = shl uint %i, ubyte 1		; <uint> [#uses=1]
+ 	br label %bb
+ 
+ bb:		; preds = %bb, %bb.preheader
+ 	%indvar = phi uint [ %indvar.next, %bb ], [ 0, %bb.preheader ]		; <uint> [#uses=2]
+ 	%tmp.15 = mul uint %indvar, %i		; <uint> [#uses=1]
+ 	%tmp.16 = add uint %tmp.15, %tmp.		; <uint> [#uses=2]
+ 	%k_addr.0.0 = cast uint %tmp.16 to int		; <int> [#uses=1]
+ 	%tmp = getelementptr [8193 x sbyte]* %flags2, int 0, uint %tmp.16		; <sbyte*> [#uses=1]
+ 	store sbyte 0, sbyte* %tmp
+ 	%k_addr.0 = add int %k_addr.0.0, %i		; <int> [#uses=1]
+ 	%tmp = setgt int %k_addr.0, 8192		; <bool> [#uses=1]
+ 	%indvar.next = add uint %indvar, 1		; <uint> [#uses=1]
+ 	br bool %tmp, label %return.loopexit, label %bb
+ 
+ return.loopexit:		; preds = %bb
+ 	br label %return
+ 
+ return:		; preds = %return.loopexit, %entry
+ 	ret void
+ }