; 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 | |
@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 | |
} | |