| ; RUN: opt < %s -loop-unswitch -disable-output |
| ; RUN: opt < %s -loop-unswitch -enable-mssa-loop-dependency=true -verify-memoryssa -disable-output |
| |
| define void @test1(i32* %S2) { |
| entry: |
| br i1 false, label %list_Length.exit, label %cond_true.i |
| cond_true.i: ; preds = %entry |
| ret void |
| list_Length.exit: ; preds = %entry |
| br i1 false, label %list_Length.exit9, label %cond_true.i5 |
| cond_true.i5: ; preds = %list_Length.exit |
| ret void |
| list_Length.exit9: ; preds = %list_Length.exit |
| br i1 false, label %bb78, label %return |
| bb44: ; preds = %bb78, %cond_next68 |
| br i1 %tmp49.not, label %bb62, label %bb62.loopexit |
| bb62.loopexit: ; preds = %bb44 |
| br label %bb62 |
| bb62: ; preds = %bb62.loopexit, %bb44 |
| br i1 false, label %return.loopexit, label %cond_next68 |
| cond_next68: ; preds = %bb62 |
| br i1 false, label %return.loopexit, label %bb44 |
| bb78: ; preds = %list_Length.exit9 |
| %tmp49.not = icmp eq i32* %S2, null ; <i1> [#uses=1] |
| br label %bb44 |
| return.loopexit: ; preds = %cond_next68, %bb62 |
| %retval.0.ph = phi i32 [ 1, %cond_next68 ], [ 0, %bb62 ] ; <i32> [#uses=1] |
| br label %return |
| return: ; preds = %return.loopexit, %list_Length.exit9 |
| %retval.0 = phi i32 [ 0, %list_Length.exit9 ], [ %retval.0.ph, %return.loopexit ] ; <i32> [#uses=0] |
| ret void |
| } |
| |
| define void @test2() nounwind { |
| entry: |
| br label %bb.nph |
| |
| bb.nph: ; preds = %entry |
| %and.i13521 = and <4 x i1> undef, undef ; <<4 x i1>> [#uses=1] |
| br label %for.body |
| |
| for.body: ; preds = %for.body, %bb.nph |
| %or.i = select <4 x i1> %and.i13521, <4 x i32> undef, <4 x i32> undef ; <<4 x i32>> [#uses=0] |
| br i1 false, label %for.body, label %for.end |
| |
| for.end: ; preds = %for.body, %entry |
| ret void |
| } |
| |
| ; PR6879 |
| define i32* @test3(i32** %p_45, i16 zeroext %p_46, i64 %p_47, i64 %p_48, i16 signext %p_49) nounwind { |
| entry: |
| br label %for.cond |
| |
| for.cond: ; preds = %for.cond4, %entry |
| br i1 false, label %for.cond4, label %for.end88 |
| |
| for.cond4: ; preds = %for.cond |
| %conv46 = trunc i32 0 to i8 ; <i8> [#uses=2] |
| %cmp60 = icmp sgt i8 %conv46, 124 ; <i1> [#uses=1] |
| %or.cond = and i1 undef, %cmp60 ; <i1> [#uses=1] |
| %cond = select i1 %or.cond, i8 %conv46, i8 undef ; <i8> [#uses=0] |
| br label %for.cond |
| |
| for.end88: ; preds = %for.cond |
| ret i32* undef |
| } |