; RUN: opt %s -indvars -S | grep add | count 1 ; Indvars should be able to compute the exit value of this loop ; without any additional arithmetic. The only add needed should ; be the canonical IV increment. target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128" define void @foo(double* %p, i32 %n) nounwind { entry: %0 = icmp sgt i32 %n, 0 ; [#uses=1] br i1 %0, label %bb.nph, label %return bb.nph: ; preds = %entry br label %bb2 bb2: ; preds = %bb3, %bb.nph %i.01 = phi i32 [ %7, %bb3 ], [ 0, %bb.nph ] ; [#uses=3] %1 = sext i32 %i.01 to i64 ; [#uses=1] %2 = getelementptr double* %p, i64 %1 ; [#uses=1] %3 = load double* %2, align 8 ; [#uses=1] %4 = fmul double %3, 1.100000e+00 ; [#uses=1] %5 = sext i32 %i.01 to i64 ; [#uses=1] %6 = getelementptr double* %p, i64 %5 ; [#uses=1] store double %4, double* %6, align 8 %7 = add i32 %i.01, 1 ; [#uses=2] br label %bb3 bb3: ; preds = %bb2 %8 = icmp slt i32 %7, %n ; [#uses=1] br i1 %8, label %bb2, label %bb3.return_crit_edge bb3.return_crit_edge: ; preds = %bb3 br label %return return: ; preds = %bb3.return_crit_edge, %entry ret void }