1 ; RUN: opt < %s -indvars -S | FileCheck %s 2 ; Test WidenIV::GetExtendedOperandRecurrence. 3 ; add219 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 nsw i64 %indvars.iv, 1 21 for.body170: ; preds = %for.body170, %for.body153 22 %i2.19 = phi i32 [ %add249, %for.body170 ], [ 0, %for.body153 ] 23 %add219 = add nsw i32 %i2.19, 1 24 %idxprom220 = sext i32 %add219 to i64 25 %add249 = add nsw i32 %i2.19, %shl132 26 br label %for.body170 27 28 for.end285: ; preds = %entry 29 ret void 30 } 31
