| ; RUN: llvm-as < %s | opt -analyze -scalar-evolution -disable-output | grep { --> {.*,+,.*}<bb>} | count 8 |
| |
| ; The addrecs in this loop are analyzable only by using nsw information. |
| |
| target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64" |
| |
| define void @foo(double* %p) nounwind { |
| entry: |
| %tmp = load double* %p, align 8 ; <double> [#uses=1] |
| %tmp1 = fcmp ogt double %tmp, 2.000000e+00 ; <i1> [#uses=1] |
| br i1 %tmp1, label %bb.nph, label %return |
| |
| bb.nph: ; preds = %entry |
| br label %bb |
| |
| bb: ; preds = %bb1, %bb.nph |
| %i.01 = phi i32 [ %tmp8, %bb1 ], [ 0, %bb.nph ] ; <i32> [#uses=3] |
| %tmp2 = sext i32 %i.01 to i64 ; <i64> [#uses=1] |
| %tmp3 = getelementptr double* %p, i64 %tmp2 ; <double*> [#uses=1] |
| %tmp4 = load double* %tmp3, align 8 ; <double> [#uses=1] |
| %tmp5 = fmul double %tmp4, 9.200000e+00 ; <double> [#uses=1] |
| %tmp6 = sext i32 %i.01 to i64 ; <i64> [#uses=1] |
| %tmp7 = getelementptr double* %p, i64 %tmp6 ; <double*> [#uses=1] |
| store double %tmp5, double* %tmp7, align 8 |
| %tmp8 = add nsw i32 %i.01, 1 ; <i32> [#uses=2] |
| br label %bb1 |
| |
| bb1: ; preds = %bb |
| %phitmp = sext i32 %tmp8 to i64 ; <i64> [#uses=1] |
| %tmp9 = getelementptr double* %p, i64 %phitmp ; <double*> [#uses=1] |
| %tmp10 = load double* %tmp9, align 8 ; <double> [#uses=1] |
| %tmp11 = fcmp ogt double %tmp10, 2.000000e+00 ; <i1> [#uses=1] |
| br i1 %tmp11, label %bb, label %bb1.return_crit_edge |
| |
| bb1.return_crit_edge: ; preds = %bb1 |
| br label %return |
| |
| return: ; preds = %bb1.return_crit_edge, %entry |
| ret void |
| } |
