1 ; RUN: opt < %s -indvars -S | FileCheck %s 2 ; Test WidenIV::GetExtendedOperandRecurrence. 3 ; %add, %sub and %mul should be extended to i64 because it is nsw, even though its 4 ; sext cannot be hoisted outside the loop. 5 6 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" 7 8 define void @test() nounwind { 9 entry: 10 br i1 undef, label %for.body11, label %for.end285 11 12 for.body11: ; preds = %entry 13 %shl = shl i32 1, 1 14 %shl132 = shl i32 %shl, 1 15 br label %for.body153 16 17 for.body153: ; preds = %for.body153, %for.body11 18 br i1 undef, label %for.body170, label %for.body153 19 20 ; CHECK: add nuw nsw i64 %indvars.iv, 1 21 ; CHECK: sub nsw i64 %indvars.iv, 2 22 ; CHECK: sub nsw i64 4, %indvars.iv 23 ; CHECK: mul nsw i64 %indvars.iv, 8 24 for.body170: ; preds = %for.body170, %for.body153 25 %i2.19 = phi i32 [ %add249, %for.body170 ], [ 0, %for.body153 ] 26 27 %add = add nsw i32 %i2.19, 1 28 %add.idxprom = sext i32 %add to i64 29 30 %sub = sub nsw i32 %i2.19, 2 31 %sub.idxprom = sext i32 %sub to i64 32 33 %sub.neg = sub nsw i32 4, %i2.19 34 %sub.neg.idxprom = sext i32 %sub.neg to i64 35 36 %mul = mul nsw i32 %i2.19, 8 37 %mul.idxprom = sext i32 %mul to i64 38 39 %add249 = add nsw i32 %i2.19, %shl132 40 br label %for.body170 41 for.end285: ; preds = %entry 42 ret void 43 } 44
