1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt -newgvn -S %s | FileCheck %s
4 @a = common global i32 0, align 4
5 @.str = private unnamed_addr constant [4 x i8] c"%d\0A\00", align 1
6 define i32 @main() #0 {
9 ; CHECK-NEXT: [[TMP0:%.*]] = load i32, i32* @a, align 4
10 ; CHECK-NEXT: [[NEG:%.*]] = xor i32 [[TMP0]], -1
11 ; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i32 [[TMP0]], -1
12 ; CHECK-NEXT: br i1 [[CMP]], label [[IF_THEN:%.*]], label [[IF_END:%.*]]
14 ; CHECK-NEXT: br label [[IF_END]]
16 ; CHECK-NEXT: [[PHIOFOPS:%.*]] = phi i32 [ [[TMP0]], [[ENTRY:%.*]] ], [ [[NEG]], [[IF_THEN]] ]
17 ; CHECK-NEXT: [[STOREMERGE:%.*]] = phi i32 [ [[TMP0]], [[IF_THEN]] ], [ [[NEG]], [[ENTRY]] ]
18 ; CHECK-NEXT: [[CMP2:%.*]] = icmp ult i32 [[STOREMERGE]], [[PHIOFOPS]]
19 ; CHECK-NEXT: br i1 [[CMP2]], label [[IF_THEN3:%.*]], label [[IF_END6:%.*]]
21 ; CHECK-NEXT: [[TOBOOL:%.*]] = icmp eq i32 [[STOREMERGE]], -1
22 ; CHECK-NEXT: br i1 [[TOBOOL]], label [[LOR_RHS:%.*]], label [[LOR_END:%.*]]
24 ; CHECK-NEXT: [[TOBOOL5:%.*]] = icmp ne i32 [[TMP0]], 0
25 ; CHECK-NEXT: [[PHITMP:%.*]] = zext i1 [[TOBOOL5]] to i32
26 ; CHECK-NEXT: br label [[LOR_END]]
28 ; CHECK-NEXT: [[TMP1:%.*]] = phi i32 [ 1, [[IF_THEN3]] ], [ [[PHITMP]], [[LOR_RHS]] ]
29 ; CHECK-NEXT: store i32 [[TMP1]], i32* @a, align 4
30 ; CHECK-NEXT: br label [[IF_END6]]
32 ; CHECK-NEXT: [[TMP2:%.*]] = load i32, i32* @a, align 4
33 ; CHECK-NEXT: [[CALL:%.*]] = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 [[TMP2]])
34 ; CHECK-NEXT: ret i32 0
37 %0 = load i32, i32* @a, align 4
39 %cmp = icmp sgt i32 %0, -1
40 br i1 %cmp, label %if.then, label %if.end
46 %storemerge = phi i32 [ %0, %if.then ], [ %neg, %entry ]
47 %neg1 = xor i32 %storemerge, -1
48 %cmp2 = icmp ult i32 %storemerge, %neg1
49 br i1 %cmp2, label %if.then3, label %if.end6
52 %tobool = icmp eq i32 %storemerge, -1
53 br i1 %tobool, label %lor.rhs, label %lor.end
56 %tobool5 = icmp ne i32 %0, 0
57 %phitmp = zext i1 %tobool5 to i32
61 %1 = phi i32 [ 1, %if.then3 ], [ %phitmp, %lor.rhs ]
62 store i32 %1, i32* @a, align 4
66 %2 = load i32, i32* @a, align 4
67 %call = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %2) #3
70 declare i32 @printf(i8*, ...) #2