| ; RUN: opt < %s -indvars -S | FileCheck %s |
| ; Test WidenIV::GetExtendedOperandRecurrence. |
| ; %add, %sub and %mul should be extended to i64 because it is nsw, even though its |
| ; sext cannot be hoisted outside the loop. |
| |
| 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-n8:16:32:64" |
| |
| declare void @use(i64 %x) |
| |
| define void @test() nounwind { |
| entry: |
| br i1 undef, label %for.body11, label %for.end285 |
| |
| for.body11: ; preds = %entry |
| %shl = shl i32 1, 1 |
| %shl132 = shl i32 %shl, 1 |
| br label %for.body153 |
| |
| for.body153: ; preds = %for.body153, %for.body11 |
| br i1 undef, label %for.body170, label %for.body153 |
| |
| ; CHECK: add nuw nsw i64 %indvars.iv, 1 |
| ; CHECK: sub nsw i64 %indvars.iv, 2 |
| ; CHECK: sub nsw i64 4, %indvars.iv |
| ; CHECK: mul nsw i64 %indvars.iv, 8 |
| for.body170: ; preds = %for.body170, %for.body153 |
| %i2.19 = phi i32 [ %add249, %for.body170 ], [ 0, %for.body153 ] |
| |
| %add = add nsw i32 %i2.19, 1 |
| %add.idxprom = sext i32 %add to i64 |
| call void @use(i64 %add.idxprom) |
| |
| %sub = sub nsw i32 %i2.19, 2 |
| %sub.idxprom = sext i32 %sub to i64 |
| call void @use(i64 %sub.idxprom) |
| |
| %sub.neg = sub nsw i32 4, %i2.19 |
| %sub.neg.idxprom = sext i32 %sub.neg to i64 |
| call void @use(i64 %sub.neg.idxprom) |
| |
| %mul = mul nsw i32 %i2.19, 8 |
| %mul.idxprom = sext i32 %mul to i64 |
| call void @use(i64 %mul.idxprom) |
| |
| %add249 = add nsw i32 %i2.19, %shl132 |
| br label %for.body170 |
| for.end285: ; preds = %entry |
| ret void |
| } |
