1 ; RUN: opt < %s -indvars -S -enable-iv-rewrite | FileCheck %s 2 ; CHECK: define void @foo 3 ; CHECK: mul 4 ; CHECK: mul 5 ; CHECK: mul 6 ; CHECK: add 7 ; CHECK: sub 8 ; CHECK: define void @bar 9 ; CHECK: mul 10 ; CHECK: mul 11 ; CHECK: mul 12 ; CHECK: add 13 ; CHECK: sub 14 15 define void @foo(i64 %n, i64 %m, i64 %o, double* nocapture %p) nounwind { 16 entry: 17 %tmp = icmp sgt i64 %n, 0 ; <i1> [#uses=1] 18 br i1 %tmp, label %bb.nph, label %return 19 20 bb.nph: ; preds = %entry 21 %tmp1 = mul i64 %n, 37 ; <i64> [#uses=1] 22 %tmp2 = mul i64 %tmp1, %m ; <i64> [#uses=1] 23 %tmp3 = mul i64 %tmp2, %o ; <i64> [#uses=1] 24 br label %bb 25 26 bb: ; preds = %bb, %bb.nph 27 %i.01 = phi i64 [ %tmp3, %bb.nph ], [ %tmp13, %bb ] ; <i64> [#uses=3] 28 %tmp9 = getelementptr double* %p, i64 %i.01 ; <double*> [#uses=1] 29 %tmp10 = load double* %tmp9, align 8 ; <double> [#uses=1] 30 %tmp11 = fdiv double %tmp10, 2.100000e+00 ; <double> [#uses=1] 31 store double %tmp11, double* %tmp9, align 8 32 %tmp13 = add i64 %i.01, 1 ; <i64> [#uses=2] 33 %tmp14 = icmp slt i64 %tmp13, %n ; <i1> [#uses=1] 34 br i1 %tmp14, label %bb, label %return.loopexit 35 36 return.loopexit: ; preds = %bb 37 br label %return 38 39 return: ; preds = %return.loopexit, %entry 40 ret void 41 } 42 define void @bar(i64 %n, i64 %m, i64 %o, i64 %q, double* nocapture %p) nounwind { 43 entry: 44 %tmp = icmp sgt i64 %n, 0 ; <i1> [#uses=1] 45 br i1 %tmp, label %bb.nph, label %return 46 47 bb.nph: ; preds = %entry 48 %tmp1 = mul i64 %n, %q ; <i64> [#uses=1] 49 %tmp2 = mul i64 %tmp1, %m ; <i64> [#uses=1] 50 %tmp3 = mul i64 %tmp2, %o ; <i64> [#uses=1] 51 br label %bb 52 53 bb: ; preds = %bb, %bb.nph 54 %i.01 = phi i64 [ %tmp3, %bb.nph ], [ %tmp13, %bb ] ; <i64> [#uses=3] 55 %tmp9 = getelementptr double* %p, i64 %i.01 ; <double*> [#uses=1] 56 %tmp10 = load double* %tmp9, align 8 ; <double> [#uses=1] 57 %tmp11 = fdiv double %tmp10, 2.100000e+00 ; <double> [#uses=1] 58 store double %tmp11, double* %tmp9, align 8 59 %tmp13 = add i64 %i.01, 1 ; <i64> [#uses=2] 60 %tmp14 = icmp slt i64 %tmp13, %n ; <i1> [#uses=1] 61 br i1 %tmp14, label %bb, label %return.loopexit 62 63 return.loopexit: ; preds = %bb 64 br label %return 65 66 return: ; preds = %return.loopexit, %entry 67 ret void 68 } 69
