| ; RUN: llc -mtriple=armv8-eabi -verify-machineinstrs %s -o /dev/null | |
| ; This test ensures that Loop Strength Reduction will | |
| ; not create an Add Reccurence Expression if not all | |
| ; its operands are loop invariants. | |
| define void @add_rec_expr() { | |
| entry: | |
| br label %loop0 | |
| loop0: | |
| %c.0 = phi i32 [ 0, %entry ], [ %inc.0, %loop0 ] | |
| %inc.0 = add nuw i32 %c.0, 1 | |
| br i1 undef, label %loop0, label %bb1 | |
| bb1: | |
| %mul.0 = mul i32 %c.0, %c.0 | |
| %gelptr.0 = getelementptr inbounds i16, i16* undef, i32 %mul.0 | |
| br label %loop1 | |
| loop1: | |
| %inc.1 = phi i32 [ %inc.2, %bb4 ], [ 0, %bb1 ] | |
| %mul.1 = mul i32 %inc.1, %c.0 | |
| br label %bb3 | |
| bb3: | |
| %add.0 = add i32 undef, %mul.1 | |
| %gelptr.1 = getelementptr inbounds i16, i16* %gelptr.0, i32 %add.0 | |
| store i16 undef, i16* %gelptr.1, align 2 | |
| br label %bb4 | |
| bb4: | |
| %inc.2 = add nuw i32 %inc.1, 1 | |
| br label %loop1 | |
| } |