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- ; LFTR should eliminate the need for the computation of i*i completely. It
- ; is only used to compute the exit value.
- ; RUN: opt < %s -indvars -dce -S | not grep mul
- ; Provide legal integer types.
- target datalayout = "n8:16:32:64"
- @A = external global i32 ; <i32*> [#uses=1]
- define i32 @quadratic_setlt() {
- entry:
- br label %loop
- loop: ; preds = %loop, %entry
- %i = phi i32 [ 7, %entry ], [ %i.next, %loop ] ; <i32> [#uses=5]
- %i.next = add i32 %i, 1 ; <i32> [#uses=1]
- store i32 %i, i32* @A
- %i2 = mul i32 %i, %i ; <i32> [#uses=1]
- %c = icmp slt i32 %i2, 1000 ; <i1> [#uses=1]
- br i1 %c, label %loop, label %loopexit
- loopexit: ; preds = %loop
- ret i32 %i
- }
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