22 lines
614 B
LLVM
22 lines
614 B
LLVM
; Check that variable strides are reduced to adds instead of multiplies.
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; RUN: opt < %s -loop-reduce -S | not grep mul
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; Provide legal integer types.
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target datalayout = "n8:16:32:64"
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declare i1 @pred(i32)
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define void @test([10000 x i32]* %P, i32 %STRIDE) {
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; <label>:0
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br label %Loop
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Loop: ; preds = %Loop, %0
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%INDVAR = phi i32 [ 0, %0 ], [ %INDVAR2, %Loop ] ; <i32> [#uses=2]
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%Idx = mul i32 %INDVAR, %STRIDE ; <i32> [#uses=1]
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%cond = call i1 @pred( i32 %Idx ) ; <i1> [#uses=1]
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%INDVAR2 = add i32 %INDVAR, 1 ; <i32> [#uses=1]
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br i1 %cond, label %Loop, label %Out
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Out: ; preds = %Loop
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ret void
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}
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