; NOTE: Assertions have been autogenerated by utils/update_test_checks.py ; RUN: opt < %s -passes=instcombine -S | FileCheck %s declare void @use16(i16) declare void @usev4(<4 x i4>) define i1 @icmp_shl_ugt_1(i8 %x) { ; CHECK-LABEL: @icmp_shl_ugt_1( ; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i8 [[X:%.*]], 0 ; CHECK-NEXT: ret i1 [[CMP]] ; %add = shl i8 %x, 1 %cmp = icmp ugt i8 %add, %x ret i1 %cmp } define <2 x i1> @icmp_shl_ugt_2(<2 x i32> %_x) { ; CHECK-LABEL: @icmp_shl_ugt_2( ; CHECK-NEXT: [[X:%.*]] = add <2 x i32> [[_X:%.*]], ; CHECK-NEXT: [[CMP:%.*]] = icmp slt <2 x i32> [[X]], zeroinitializer ; CHECK-NEXT: ret <2 x i1> [[CMP]] ; %x = add <2 x i32> , %_x ; thwart complexity-based canonicalization %add = shl <2 x i32> %x, %cmp = icmp ugt <2 x i32> %x, %add ret <2 x i1> %cmp } define <3 x i1> @icmp_shl_uge_1(<3 x i7> %x) { ; CHECK-LABEL: @icmp_shl_uge_1( ; CHECK-NEXT: [[CMP:%.*]] = icmp sgt <3 x i7> [[X:%.*]], ; CHECK-NEXT: ret <3 x i1> [[CMP]] ; %add = shl <3 x i7> %x, %cmp = icmp uge <3 x i7> %add, %x ret <3 x i1> %cmp } define i1 @icmp_shl_uge_2(i5 %_x) { ; CHECK-LABEL: @icmp_shl_uge_2( ; CHECK-NEXT: [[X:%.*]] = add i5 [[_X:%.*]], 10 ; CHECK-NEXT: [[CMP:%.*]] = icmp slt i5 [[X]], 1 ; CHECK-NEXT: ret i1 [[CMP]] ; %x = add i5 42, %_x ; thwart complexity-based canonicalization %add = shl i5 %x, 1 %cmp = icmp uge i5 %x, %add ret i1 %cmp } define i1 @icmp_shl_ult_1(i16 %x) { ; CHECK-LABEL: @icmp_shl_ult_1( ; CHECK-NEXT: [[ADD:%.*]] = shl i16 [[X:%.*]], 1 ; CHECK-NEXT: call void @use16(i16 [[ADD]]) ; CHECK-NEXT: [[CMP:%.*]] = icmp slt i16 [[X]], 0 ; CHECK-NEXT: ret i1 [[CMP]] ; %add = shl i16 %x, 1 call void @use16(i16 %add) ; extra use of shl %cmp = icmp ult i16 %add, %x ret i1 %cmp } define <4 x i1> @icmp_shl_ult_2(<4 x i4> %_x) { ; CHECK-LABEL: @icmp_shl_ult_2( ; CHECK-NEXT: [[X:%.*]] = add <4 x i4> [[_X:%.*]], ; CHECK-NEXT: [[ADD:%.*]] = shl <4 x i4> [[X]], ; CHECK-NEXT: call void @usev4(<4 x i4> [[ADD]]) ; CHECK-NEXT: [[CMP:%.*]] = icmp sgt <4 x i4> [[X]], zeroinitializer ; CHECK-NEXT: ret <4 x i1> [[CMP]] ; %x = add <4 x i4> , %_x ; thwart complexity-based canonicalization %add = shl <4 x i4> %x, call void @usev4(<4 x i4> %add) ; extra use of shl %cmp = icmp ult <4 x i4> %x, %add ret <4 x i1> %cmp } define <2 x i1> @icmp_shl_ule_1(<2 x i8> %x) { ; CHECK-LABEL: @icmp_shl_ule_1( ; CHECK-NEXT: [[CMP:%.*]] = icmp slt <2 x i8> [[X:%.*]], ; CHECK-NEXT: ret <2 x i1> [[CMP]] ; %add = shl <2 x i8> %x, %cmp = icmp ule <2 x i8> %add, %x ret <2 x i1> %cmp } define i1 @icmp_shl_ule_2(i8 %_x) { ; CHECK-LABEL: @icmp_shl_ule_2( ; CHECK-NEXT: [[X:%.*]] = add i8 [[_X:%.*]], 42 ; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i8 [[X]], -1 ; CHECK-NEXT: ret i1 [[CMP]] ; %x = add i8 42, %_x ; thwart complexity-based canonicalization %add = shl i8 %x, 1 %cmp = icmp ule i8 %x, %add ret i1 %cmp } define i1 @icmp_shl_eq_1(i8 %x) { ; CHECK-LABEL: @icmp_shl_eq_1( ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i8 [[X:%.*]], 0 ; CHECK-NEXT: ret i1 [[CMP]] ; %add = shl i8 %x, 1 %cmp = icmp eq i8 %add, %x ret i1 %cmp } define <2 x i1> @icmp_shl_eq_2(<2 x i8> %_x) { ; CHECK-LABEL: @icmp_shl_eq_2( ; CHECK-NEXT: [[X:%.*]] = sdiv <2 x i8> , [[_X:%.*]] ; CHECK-NEXT: [[CMP:%.*]] = icmp eq <2 x i8> [[X]], zeroinitializer ; CHECK-NEXT: ret <2 x i1> [[CMP]] ; %x = sdiv <2 x i8> , %_x ; thwart complexity-based canonicalization %add = shl <2 x i8> %x, %cmp = icmp eq <2 x i8> %x, %add ret <2 x i1> %cmp } define <2 x i1> @icmp_shl_ne_1(<2 x i8> %x) { ; CHECK-LABEL: @icmp_shl_ne_1( ; CHECK-NEXT: [[CMP:%.*]] = icmp ne <2 x i8> [[X:%.*]], zeroinitializer ; CHECK-NEXT: ret <2 x i1> [[CMP]] ; %add = shl <2 x i8> %x, %cmp = icmp ne <2 x i8> %add, %x ret <2 x i1> %cmp } define i1 @icmp_shl_ne_2(i8 %_x) { ; CHECK-LABEL: @icmp_shl_ne_2( ; CHECK-NEXT: [[X:%.*]] = sdiv i8 42, [[_X:%.*]] ; CHECK-NEXT: [[CMP:%.*]] = icmp ne i8 [[X]], 0 ; CHECK-NEXT: ret i1 [[CMP]] ; %x = sdiv i8 42, %_x ; thwart complexity-based canonicalization %add = shl i8 %x, 1 %cmp = icmp ne i8 %x, %add ret i1 %cmp } define i1 @negative_test_signed_pred(i8 %x) { ; CHECK-LABEL: @negative_test_signed_pred( ; CHECK-NEXT: [[ADD:%.*]] = shl i8 [[X:%.*]], 1 ; CHECK-NEXT: [[CMP:%.*]] = icmp slt i8 [[ADD]], [[X]] ; CHECK-NEXT: ret i1 [[CMP]] ; %add = shl i8 %x, 1 %cmp = icmp slt i8 %add, %x ret i1 %cmp } define i1 @negative_test_shl_more_than_1(i16 %x) { ; CHECK-LABEL: @negative_test_shl_more_than_1( ; CHECK-NEXT: [[ADD:%.*]] = shl i16 [[X:%.*]], 2 ; CHECK-NEXT: [[CMP:%.*]] = icmp ult i16 [[ADD]], [[X]] ; CHECK-NEXT: ret i1 [[CMP]] ; %add = shl i16 %x, 2 %cmp = icmp ult i16 %add, %x ret i1 %cmp } define i1 @negative_test_compare_with_different_value(i16 %x, i16 %y) { ; CHECK-LABEL: @negative_test_compare_with_different_value( ; CHECK-NEXT: [[ADD:%.*]] = shl i16 [[X:%.*]], 1 ; CHECK-NEXT: [[CMP:%.*]] = icmp ult i16 [[ADD]], [[Y:%.*]] ; CHECK-NEXT: ret i1 [[CMP]] ; %add = shl i16 %x, 1 %cmp = icmp ult i16 %add, %y ret i1 %cmp }