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1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py2; Example input for update_test_checks (taken from test/Transforms/InstSimplify/add.ll)3; RUN: opt < %s -passes=instsimplify -S | FileCheck %s4 5define i32 @common_sub_operand(i32 %X, i32 %Y) {6; CHECK-LABEL: @common_sub_operand(7; CHECK-NEXT: ret i32 [[X:%.*]]8;9 %Z = sub i32 %X, %Y10 %Q = add i32 %Z, %Y11 ret i32 %Q12}13 14define i32 @negated_operand(i32 %x) {15; CHECK-LABEL: @negated_operand(16; CHECK-NEXT: ret i32 017;18 %negx = sub i32 0, %x19 %r = add i32 %negx, %x20 ret i32 %r21}22 23define <2 x i32> @negated_operand_commute_vec(<2 x i32> %x) {24; CHECK-LABEL: @negated_operand_commute_vec(25; CHECK-NEXT: ret <2 x i32> zeroinitializer26;27 %negx = sub <2 x i32> zeroinitializer, %x28 %r = add <2 x i32> %x, %negx29 ret <2 x i32> %r30}31 32define i8 @knownnegation(i8 %x, i8 %y) {33; CHECK-LABEL: @knownnegation(34; CHECK-NEXT: ret i8 035;36 %xy = sub i8 %x, %y37 %yx = sub i8 %y, %x38 %r = add i8 %xy, %yx39 ret i8 %r40}41 42define <2 x i8> @knownnegation_commute_vec(<2 x i8> %x, <2 x i8> %y) {43; CHECK-LABEL: @knownnegation_commute_vec(44; CHECK-NEXT: ret <2 x i8> zeroinitializer45;46 %xy = sub <2 x i8> %x, %y47 %yx = sub <2 x i8> %y, %x48 %r = add <2 x i8> %yx, %xy49 ret <2 x i8> %r50}51 52define i32 @nameless_value(i32 %X) {53; CHECK-LABEL: @nameless_value(54; CHECK-NEXT: [[TMP1:%.*]] = sub i32 42, [[X:%.*]]55; CHECK-NEXT: ret i32 [[TMP1]]56;57 %1 = sub i32 42, %X58 ret i32 %159}60