; NOTE: Assertions have been autogenerated by utils/update_test_checks.py ; RUN: opt < %s -passes=instcombine -S | FileCheck %s ; Test that this transform works: ; udiv X, (Select Cond, C1, C2) --> Select Cond, (shr X, C1), (shr X, C2) define i64 @test(i64 %X, i1 %Cond ) { ; CHECK-LABEL: @test( ; CHECK-NEXT: [[QUOTIENT1:%.*]] = lshr i64 [[X:%.*]], 4 ; CHECK-NEXT: [[QUOTIENT2:%.*]] = lshr i64 [[X]], 3 ; CHECK-NEXT: [[SUM:%.*]] = add nuw nsw i64 [[QUOTIENT1]], [[QUOTIENT2]] ; CHECK-NEXT: ret i64 [[SUM]] ; %divisor1 = select i1 %Cond, i64 16, i64 8 %quotient1 = udiv i64 %X, %divisor1 %divisor2 = select i1 %Cond, i64 8, i64 0 %quotient2 = udiv i64 %X, %divisor2 %sum = add i64 %quotient1, %quotient2 ret i64 %sum } ; https://bugs.llvm.org/show_bug.cgi?id=34856 ; This would assert/crash because we didn't propagate the condition with the correct vector type. define <2 x i32> @PR34856(<2 x i32> %t0, <2 x i32> %t1) { ; CHECK-LABEL: @PR34856( ; CHECK-NEXT: [[TMP1:%.*]] = icmp ugt <2 x i32> [[T1:%.*]], <i32 -8, i32 -8> ; CHECK-NEXT: [[DIV1:%.*]] = zext <2 x i1> [[TMP1]] to <2 x i32> ; CHECK-NEXT: ret <2 x i32> [[DIV1]] ; %cmp = icmp eq <2 x i32> %t0, <i32 1, i32 1> %zext = zext <2 x i1> %cmp to <2 x i32> %neg = select <2 x i1> %cmp, <2 x i32> zeroinitializer, <2 x i32> <i32 -7, i32 -7> %div1 = udiv <2 x i32> %t1, %neg %use_cmp_again = add <2 x i32> %div1, %zext ret <2 x i32> %use_cmp_again }