; NOTE: Assertions have been autogenerated by utils/update_test_checks.py ; RUN: opt -passes=constraint-elimination -S %s | FileCheck %s declare void @llvm.assume(i1) define i1 @test_eq_1(i8 %a, i8 %b) { ; CHECK-LABEL: @test_eq_1( ; CHECK-NEXT: entry: ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i8 [[A:%.*]], [[B:%.*]] ; CHECK-NEXT: br i1 [[CMP]], label [[THEN:%.*]], label [[ELSE:%.*]] ; CHECK: then: ; CHECK-NEXT: [[RES_1:%.*]] = xor i1 true, true ; CHECK-NEXT: [[RES_2:%.*]] = xor i1 [[RES_1]], true ; CHECK-NEXT: [[RES_3:%.*]] = xor i1 [[RES_2]], true ; CHECK-NEXT: [[RES_4:%.*]] = xor i1 [[RES_3]], false ; CHECK-NEXT: [[RES_5:%.*]] = xor i1 [[RES_4]], false ; CHECK-NEXT: [[C_1:%.*]] = icmp ult i8 [[B]], 99 ; CHECK-NEXT: [[RES_6:%.*]] = xor i1 [[RES_5]], [[C_1]] ; CHECK-NEXT: ret i1 [[RES_6]] ; CHECK: else: ; CHECK-NEXT: [[F_3:%.*]] = icmp eq i8 [[A]], [[B]] ; CHECK-NEXT: [[F_4:%.*]] = icmp eq i8 [[B]], [[A]] ; CHECK-NEXT: [[RES_7:%.*]] = xor i1 [[F_3]], [[F_4]] ; CHECK-NEXT: [[C_2:%.*]] = icmp ult i8 [[B]], 99 ; CHECK-NEXT: [[RES_8:%.*]] = xor i1 [[RES_7]], [[C_2]] ; CHECK-NEXT: [[C_3:%.*]] = icmp uge i8 [[A]], [[B]] ; CHECK-NEXT: [[RES_9:%.*]] = xor i1 [[RES_8]], [[C_3]] ; CHECK-NEXT: [[C_4:%.*]] = icmp ule i8 [[A]], [[B]] ; CHECK-NEXT: [[RES_10:%.*]] = xor i1 [[RES_9]], [[C_4]] ; CHECK-NEXT: [[C_5:%.*]] = icmp ugt i8 [[B]], [[A]] ; CHECK-NEXT: [[RES_11:%.*]] = xor i1 [[RES_10]], [[C_5]] ; CHECK-NEXT: [[C_6:%.*]] = icmp ult i8 [[B]], [[A]] ; CHECK-NEXT: [[RES_12:%.*]] = xor i1 [[RES_11]], [[C_6]] ; CHECK-NEXT: ret i1 [[RES_12]] ; entry: %cmp = icmp eq i8 %a, %b br i1 %cmp, label %then, label %else then: %t.1 = icmp uge i8 %a, %b %t.2 = icmp ule i8 %a, %b %res.1 = xor i1 %t.1, %t.2 %t.3 = icmp eq i8 %a, %b %res.2 = xor i1 %res.1, %t.3 %t.4 = icmp eq i8 %b, %a %res.3 = xor i1 %res.2, %t.4 %f.1 = icmp ugt i8 %b, %a %res.4 = xor i1 %res.3, %f.1 %f.2 = icmp ult i8 %b, %a %res.5 = xor i1 %res.4, %f.2 %c.1 = icmp ult i8 %b, 99 %res.6 = xor i1 %res.5, %c.1 ret i1 %res.6 else: %f.3 = icmp eq i8 %a, %b %f.4 = icmp eq i8 %b, %a %res.7 = xor i1 %f.3, %f.4 %c.2 = icmp ult i8 %b, 99 %res.8 = xor i1 %res.7, %c.2 %c.3 = icmp uge i8 %a, %b %res.9 = xor i1 %res.8, %c.3 %c.4 = icmp ule i8 %a, %b %res.10 = xor i1 %res.9, %c.4 %c.5 = icmp ugt i8 %b, %a %res.11 = xor i1 %res.10, %c.5 %c.6 = icmp ult i8 %b, %a %res.12 = xor i1 %res.11, %c.6 ret i1 %res.12 } define i1 @test_eq_2(i8 %a, i8 %b) { ; CHECK-LABEL: @test_eq_2( ; CHECK-NEXT: entry: ; CHECK-NEXT: [[PRE_1:%.*]] = icmp eq i8 [[A:%.*]], [[B:%.*]] ; CHECK-NEXT: br i1 [[PRE_1]], label [[THEN:%.*]], label [[ELSE:%.*]] ; CHECK: then: ; CHECK-NEXT: [[PRE_3:%.*]] = icmp ult i8 [[B]], 100 ; CHECK-NEXT: br i1 [[PRE_3]], label [[THEN_THEN:%.*]], label [[THEN_ELSE:%.*]] ; CHECK: then.then: ; CHECK-NEXT: [[XOR_1:%.*]] = xor i1 true, true ; CHECK-NEXT: [[XOR_2:%.*]] = xor i1 [[XOR_1]], false ; CHECK-NEXT: [[XOR_3:%.*]] = xor i1 [[XOR_2]], false ; CHECK-NEXT: [[XOR_4:%.*]] = xor i1 [[XOR_3]], false ; CHECK-NEXT: [[C_1:%.*]] = icmp ult i8 [[A]], 99 ; CHECK-NEXT: [[XOR_5:%.*]] = xor i1 [[XOR_4]], [[C_1]] ; CHECK-NEXT: [[C_2:%.*]] = icmp ugt i8 [[A]], 98 ; CHECK-NEXT: [[XOR_6:%.*]] = xor i1 [[XOR_5]], [[C_1]] ; CHECK-NEXT: ret i1 [[XOR_6]] ; CHECK: then.else: ; CHECK-NEXT: [[XOR_7:%.*]] = xor i1 false, false ; CHECK-NEXT: [[XOR_8:%.*]] = xor i1 [[XOR_7]], true ; CHECK-NEXT: [[XOR_9:%.*]] = xor i1 [[XOR_8]], true ; CHECK-NEXT: [[XOR_10:%.*]] = xor i1 [[XOR_9]], true ; CHECK-NEXT: [[XOR_11:%.*]] = xor i1 [[XOR_10]], false ; CHECK-NEXT: [[XOR_12:%.*]] = xor i1 [[XOR_11]], true ; CHECK-NEXT: ret i1 [[XOR_12]] ; CHECK: else: ; CHECK-NEXT: [[CMP_2:%.*]] = icmp ult i8 [[A]], 100 ; CHECK-NEXT: ret i1 [[CMP_2]] ; entry: %pre.1 = icmp eq i8 %a, %b br i1 %pre.1, label %then, label %else then: %pre.3 = icmp ult i8 %b, 100 br i1 %pre.3, label %then.then, label %then.else then.then: %t.1 = icmp ult i8 %a, 100 %t.2 = icmp ult i8 %b, 100 %xor.1 = xor i1 %t.1, %t.2 %f.1 = icmp uge i8 %a, 100 %xor.2 = xor i1 %xor.1, %f.1 %f.2 = icmp uge i8 %b, 100 %xor.3 = xor i1 %xor.2, %f.2 %f.3.1 = icmp ugt i8 %a, 99 %xor.4 = xor i1 %xor.3, %f.3.1 %c.1 = icmp ult i8 %a, 99 %xor.5 = xor i1 %xor.4, %c.1 %c.2 = icmp ugt i8 %a, 98 %xor.6 = xor i1 %xor.5, %c.1 ret i1 %xor.6 then.else: %f.4 = icmp ult i8 %a, 100 %f.5 = icmp ult i8 %b, 100 %xor.7 = xor i1 %f.4, %f.5 %t.3 = icmp uge i8 %a, 100 %xor.8 = xor i1 %xor.7, %t.3 %t.4 = icmp uge i8 %b, 100 %xor.9 = xor i1 %xor.8, %t.4 %t.5 = icmp ugt i8 %a, 99 %xor.10 = xor i1 %xor.9, %t.5 %c.3 = icmp ult i8 %a, 99 %xor.11 = xor i1 %xor.10, %c.3 %c.4 = icmp ugt i8 %a, 98 %xor.12 = xor i1 %xor.11, %c.4 ret i1 %xor.12 else: %cmp.2 = icmp ult i8 %a, 100 ret i1 %cmp.2 } ; Test of explicitly using uge & ule instead of eq. define i1 @test_eq_as_uge_ule_(i8 %a, i8 %b) { ; CHECK-LABEL: @test_eq_as_uge_ule_( ; CHECK-NEXT: entry: ; CHECK-NEXT: [[PRE_1:%.*]] = icmp uge i8 [[A:%.*]], [[B:%.*]] ; CHECK-NEXT: [[PRE_2:%.*]] = icmp ule i8 [[A]], [[B]] ; CHECK-NEXT: [[PRE_AND:%.*]] = and i1 [[PRE_1]], [[PRE_2]] ; CHECK-NEXT: br i1 [[PRE_AND]], label [[THEN:%.*]], label [[ELSE:%.*]] ; CHECK: then: ; CHECK-NEXT: [[PRE_3:%.*]] = icmp ult i8 [[B]], 100 ; CHECK-NEXT: br i1 [[PRE_3]], label [[THEN_THEN:%.*]], label [[THEN_ELSE:%.*]] ; CHECK: then.then: ; CHECK-NEXT: [[XOR_1:%.*]] = xor i1 true, true ; CHECK-NEXT: [[XOR_2:%.*]] = xor i1 [[XOR_1]], false ; CHECK-NEXT: [[XOR_3:%.*]] = xor i1 [[XOR_2]], false ; CHECK-NEXT: [[XOR_4:%.*]] = xor i1 [[XOR_3]], false ; CHECK-NEXT: [[C_1:%.*]] = icmp ult i8 [[A]], 99 ; CHECK-NEXT: [[XOR_5:%.*]] = xor i1 [[XOR_4]], [[C_1]] ; CHECK-NEXT: [[C_2:%.*]] = icmp ugt i8 [[A]], 98 ; CHECK-NEXT: [[XOR_6:%.*]] = xor i1 [[XOR_5]], [[C_1]] ; CHECK-NEXT: ret i1 [[XOR_6]] ; CHECK: then.else: ; CHECK-NEXT: [[XOR_7:%.*]] = xor i1 false, false ; CHECK-NEXT: [[XOR_8:%.*]] = xor i1 [[XOR_7]], true ; CHECK-NEXT: [[XOR_9:%.*]] = xor i1 [[XOR_8]], true ; CHECK-NEXT: [[XOR_10:%.*]] = xor i1 [[XOR_9]], true ; CHECK-NEXT: [[XOR_11:%.*]] = xor i1 [[XOR_10]], false ; CHECK-NEXT: [[XOR_12:%.*]] = xor i1 [[XOR_11]], true ; CHECK-NEXT: ret i1 [[XOR_12]] ; CHECK: else: ; CHECK-NEXT: [[CMP_2:%.*]] = icmp ult i8 [[A]], 100 ; CHECK-NEXT: ret i1 [[CMP_2]] ; entry: %pre.1 = icmp uge i8 %a, %b %pre.2 = icmp ule i8 %a, %b %pre.and = and i1 %pre.1, %pre.2 br i1 %pre.and, label %then, label %else then: %pre.3 = icmp ult i8 %b, 100 br i1 %pre.3, label %then.then, label %then.else then.then: %t.1 = icmp ult i8 %a, 100 %t.2 = icmp ult i8 %b, 100 %xor.1 = xor i1 %t.1, %t.2 %f.1 = icmp uge i8 %a, 100 %xor.2 = xor i1 %xor.1, %f.1 %f.2 = icmp uge i8 %b, 100 %xor.3 = xor i1 %xor.2, %f.2 %f.3.1 = icmp ugt i8 %a, 99 %xor.4 = xor i1 %xor.3, %f.3.1 %c.1 = icmp ult i8 %a, 99 %xor.5 = xor i1 %xor.4, %c.1 %c.2 = icmp ugt i8 %a, 98 %xor.6 = xor i1 %xor.5, %c.1 ret i1 %xor.6 then.else: %f.4 = icmp ult i8 %a, 100 %f.5 = icmp ult i8 %b, 100 %xor.7 = xor i1 %f.4, %f.5 %t.3 = icmp uge i8 %a, 100 %xor.8 = xor i1 %xor.7, %t.3 %t.4 = icmp uge i8 %b, 100 %xor.9 = xor i1 %xor.8, %t.4 %t.5 = icmp ugt i8 %a, 99 %xor.10 = xor i1 %xor.9, %t.5 %c.3 = icmp ult i8 %a, 99 %xor.11 = xor i1 %xor.10, %c.3 %c.4 = icmp ugt i8 %a, 98 %xor.12 = xor i1 %xor.11, %c.4 ret i1 %xor.12 else: %cmp.2 = icmp ult i8 %a, 100 ret i1 %cmp.2 } define i1 @test_eq_ult_and(i8 %a, i8 %b) { ; CHECK-LABEL: @test_eq_ult_and( ; CHECK-NEXT: entry: ; CHECK-NEXT: [[PRE_1:%.*]] = icmp eq i8 [[A:%.*]], [[B:%.*]] ; CHECK-NEXT: [[PRE_2:%.*]] = icmp ult i8 [[B]], 100 ; CHECK-NEXT: [[PRE_AND:%.*]] = and i1 [[PRE_1]], [[PRE_2]] ; CHECK-NEXT: br i1 [[PRE_AND]], label [[THEN:%.*]], label [[ELSE:%.*]] ; CHECK: then: ; CHECK-NEXT: [[XOR_1:%.*]] = xor i1 true, true ; CHECK-NEXT: [[XOR_2:%.*]] = xor i1 [[XOR_1]], false ; CHECK-NEXT: [[XOR_3:%.*]] = xor i1 [[XOR_2]], false ; CHECK-NEXT: [[XOR_4:%.*]] = xor i1 [[XOR_3]], false ; CHECK-NEXT: [[C_1:%.*]] = icmp ult i8 [[A]], 99 ; CHECK-NEXT: [[XOR_5:%.*]] = xor i1 [[XOR_4]], [[C_1]] ; CHECK-NEXT: [[C_2:%.*]] = icmp ugt i8 [[A]], 98 ; CHECK-NEXT: [[XOR_6:%.*]] = xor i1 [[XOR_5]], [[C_1]] ; CHECK-NEXT: ret i1 [[XOR_6]] ; CHECK: else: ; CHECK-NEXT: [[F_4:%.*]] = icmp ult i8 [[A]], 100 ; CHECK-NEXT: [[F_5:%.*]] = icmp ult i8 [[B]], 100 ; CHECK-NEXT: [[XOR_7:%.*]] = xor i1 [[F_4]], [[F_5]] ; CHECK-NEXT: [[T_3:%.*]] = icmp uge i8 [[A]], 100 ; CHECK-NEXT: [[XOR_8:%.*]] = xor i1 [[XOR_7]], [[T_3]] ; CHECK-NEXT: [[T_4:%.*]] = icmp uge i8 [[B]], 100 ; CHECK-NEXT: [[XOR_9:%.*]] = xor i1 [[XOR_8]], [[T_4]] ; CHECK-NEXT: [[T_5:%.*]] = icmp ugt i8 [[A]], 99 ; CHECK-NEXT: [[XOR_10:%.*]] = xor i1 [[XOR_9]], [[T_5]] ; CHECK-NEXT: [[C_3:%.*]] = icmp ult i8 [[A]], 99 ; CHECK-NEXT: [[XOR_11:%.*]] = xor i1 [[XOR_10]], [[C_3]] ; CHECK-NEXT: [[C_4:%.*]] = icmp ugt i8 [[A]], 98 ; CHECK-NEXT: [[XOR_12:%.*]] = xor i1 [[XOR_11]], [[C_4]] ; CHECK-NEXT: ret i1 [[XOR_12]] ; entry: %pre.1 = icmp eq i8 %a, %b %pre.2 = icmp ult i8 %b, 100 %pre.and = and i1 %pre.1, %pre.2 br i1 %pre.and, label %then, label %else then: %t.1 = icmp ult i8 %a, 100 %t.2 = icmp ult i8 %b, 100 %xor.1 = xor i1 %t.1, %t.2 %f.1 = icmp uge i8 %a, 100 %xor.2 = xor i1 %xor.1, %f.1 %f.2 = icmp uge i8 %b, 100 %xor.3 = xor i1 %xor.2, %f.2 %f.3.1 = icmp ugt i8 %a, 99 %xor.4 = xor i1 %xor.3, %f.3.1 %c.1 = icmp ult i8 %a, 99 %xor.5 = xor i1 %xor.4, %c.1 %c.2 = icmp ugt i8 %a, 98 %xor.6 = xor i1 %xor.5, %c.1 ret i1 %xor.6 else: %f.4 = icmp ult i8 %a, 100 %f.5 = icmp ult i8 %b, 100 %xor.7 = xor i1 %f.4, %f.5 %t.3 = icmp uge i8 %a, 100 %xor.8 = xor i1 %xor.7, %t.3 %t.4 = icmp uge i8 %b, 100 %xor.9 = xor i1 %xor.8, %t.4 %t.5 = icmp ugt i8 %a, 99 %xor.10 = xor i1 %xor.9, %t.5 %c.3 = icmp ult i8 %a, 99 %xor.11 = xor i1 %xor.10, %c.3 %c.4 = icmp ugt i8 %a, 98 %xor.12 = xor i1 %xor.11, %c.4 ret i1 %xor.12 } define i1 @assume_b_plus_1_ult_a(i64 %a, i64 %b) { ; CHECK-LABEL: @assume_b_plus_1_ult_a( ; CHECK-NEXT: [[TMP1:%.*]] = add nuw i64 [[B:%.*]], 1 ; CHECK-NEXT: [[TMP2:%.*]] = icmp ult i64 [[TMP1]], [[A:%.*]] ; CHECK-NEXT: tail call void @llvm.assume(i1 [[TMP2]]) ; CHECK-NEXT: ret i1 false ; %1 = add nuw i64 %b, 1 %2 = icmp ult i64 %1, %a tail call void @llvm.assume(i1 %2) %3 = icmp eq i64 %a, %b ret i1 %3 } define i1 @assume_a_plus_1_eq_b(i64 %a, i64 %b) { ; CHECK-LABEL: @assume_a_plus_1_eq_b( ; CHECK-NEXT: [[TMP1:%.*]] = add nuw i64 [[A:%.*]], 1 ; CHECK-NEXT: [[TMP2:%.*]] = icmp eq i64 [[TMP1]], [[B:%.*]] ; CHECK-NEXT: tail call void @llvm.assume(i1 [[TMP2]]) ; CHECK-NEXT: ret i1 false ; %1 = add nuw i64 %a, 1 %2 = icmp eq i64 %1, %b tail call void @llvm.assume(i1 %2) %3 = icmp eq i64 %a, %b ret i1 %3 } define i1 @assume_a_ge_b_and_b_ge_c(i64 %a, i64 %b, i64 %c) { ; CHECK-LABEL: @assume_a_ge_b_and_b_ge_c( ; CHECK-NEXT: [[TMP1:%.*]] = icmp uge i64 [[A:%.*]], [[B:%.*]] ; CHECK-NEXT: tail call void @llvm.assume(i1 [[TMP1]]) ; CHECK-NEXT: [[TMP2:%.*]] = icmp uge i64 [[B]], [[C:%.*]] ; CHECK-NEXT: tail call void @llvm.assume(i1 [[TMP2]]) ; CHECK-NEXT: [[TMP3:%.*]] = icmp eq i64 [[A]], [[C]] ; CHECK-NEXT: ret i1 [[TMP3]] ; %1 = icmp uge i64 %a, %b tail call void @llvm.assume(i1 %1) %2 = icmp uge i64 %b, %c tail call void @llvm.assume(i1 %2) %3 = icmp eq i64 %a, %c ret i1 %3 } define i1 @test_transitivity_of_equality_and_plus_1(i64 %a, i64 %b, i64 %c) { ; CHECK-LABEL: @test_transitivity_of_equality_and_plus_1( ; CHECK-NEXT: entry: ; CHECK-NEXT: [[PRE_1:%.*]] = icmp eq i64 [[A:%.*]], [[B:%.*]] ; CHECK-NEXT: br i1 [[PRE_1]], label [[AB_EQUAL:%.*]], label [[NOT_EQ:%.*]] ; CHECK: ab_equal: ; CHECK-NEXT: [[BC_EQ:%.*]] = icmp eq i64 [[B]], [[C:%.*]] ; CHECK-NEXT: br i1 [[BC_EQ]], label [[BC_EQUAL:%.*]], label [[NOT_EQ]] ; CHECK: bc_equal: ; CHECK-NEXT: [[A_PLUS_1:%.*]] = add nuw i64 [[A]], 1 ; CHECK-NEXT: [[C_PLUS_1:%.*]] = add nuw i64 [[C]], 1 ; CHECK-NEXT: [[RESULT:%.*]] = and i1 true, true ; CHECK-NEXT: ret i1 [[RESULT]] ; CHECK: not_eq: ; CHECK-NEXT: ret i1 false ; entry: %pre.1 = icmp eq i64 %a, %b br i1 %pre.1, label %ab_equal, label %not_eq ab_equal: %bc_eq = icmp eq i64 %b, %c br i1 %bc_eq, label %bc_equal, label %not_eq bc_equal: %ac_eq = icmp eq i64 %a, %c %a_plus_1 = add nuw i64 %a, 1 %c_plus_1 = add nuw i64 %c, 1 %ac_plus_1_eq = icmp eq i64 %a_plus_1, %c_plus_1 %result = and i1 %ac_eq, %ac_plus_1_eq ret i1 %result not_eq: ret i1 false } define i1 @test_eq_for_signed_cmp(i32 noundef %v0, i32 noundef %v1, i32 noundef %v2) { ; CHECK-LABEL: @test_eq_for_signed_cmp( ; CHECK-NEXT: entry: ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[V2:%.*]], [[V0:%.*]] ; CHECK-NEXT: [[CMP1:%.*]] = icmp sge i32 [[V0]], [[V1:%.*]] ; CHECK-NEXT: [[AND0:%.*]] = and i1 [[CMP1]], [[CMP]] ; CHECK-NEXT: [[CMP4:%.*]] = icmp sgt i32 [[V1]], [[V2]] ; CHECK-NEXT: ret i1 false ; entry: %cmp = icmp eq i32 %v2, %v0 %cmp1 = icmp sge i32 %v0, %v1 %and0 = and i1 %cmp1, %cmp %cmp4 = icmp sgt i32 %v1, %v2 %and1 = and i1 %cmp4, %and0 ret i1 %and1 } define i1 @test_eq_for_signed_cmp_with_decompsition(i32 noundef %v0, i32 noundef %v1, i32 noundef %v2, i32 noundef %addend0, i32 noundef %addend1) { ; CHECK-LABEL: @test_eq_for_signed_cmp_with_decompsition( ; CHECK-NEXT: entry: ; CHECK-NEXT: [[V0ADD:%.*]] = add nsw i32 [[V0:%.*]], [[ADDEND0:%.*]] ; CHECK-NEXT: [[V1ADD:%.*]] = add nsw i32 [[V1:%.*]], [[ADDEND1:%.*]] ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[V2:%.*]], [[V0ADD]] ; CHECK-NEXT: [[CMP1:%.*]] = icmp sge i32 [[V0ADD]], [[V1ADD]] ; CHECK-NEXT: [[CMP2:%.*]] = icmp sge i32 [[ADDEND0]], 0 ; CHECK-NEXT: [[CMP3:%.*]] = icmp slt i32 [[ADDEND0]], [[ADDEND1]] ; CHECK-NEXT: [[AND0:%.*]] = and i1 [[CMP1]], [[CMP]] ; CHECK-NEXT: [[AND1:%.*]] = and i1 [[AND0]], [[CMP2]] ; CHECK-NEXT: [[AND2:%.*]] = and i1 [[AND1]], [[CMP3]] ; CHECK-NEXT: [[CMP4:%.*]] = icmp sgt i32 [[V1]], [[V2]] ; CHECK-NEXT: ret i1 false ; entry: %v0add = add nsw i32 %v0, %addend0 %v1add = add nsw i32 %v1, %addend1 %cmp = icmp eq i32 %v2, %v0add %cmp1 = icmp sge i32 %v0add, %v1add %cmp2 = icmp sge i32 %addend0, 0 %cmp3 = icmp slt i32 %addend0, %addend1 %and0 = and i1 %cmp1, %cmp %and1 = and i1 %and0, %cmp2 %and2 = and i1 %and1, %cmp3 %cmp4 = icmp sgt i32 %v1, %v2 %and3 = and i1 %cmp4, %and2 ret i1 %and3 }