xref: /llvm-project/llvm/test/Analysis/MemorySSA/optimize-use.ll (revision 8e44f13c6d294e6b4864441b22045b507782540c)
1; RUN: opt -aa-pipeline=basic-aa -passes='print<memoryssa>,verify<memoryssa>' -disable-output < %s 2>&1 | FileCheck %s --check-prefixes=CHECK,NOLIMIT
2; RUN: opt -memssa-check-limit=0 -aa-pipeline=basic-aa -passes='print<memoryssa>,verify<memoryssa>' -disable-output < %s 2>&1 | FileCheck %s --check-prefixes=CHECK,LIMIT
3
4; Function Attrs: ssp uwtable
5define i32 @main() {
6entry:
7; CHECK: 1 = MemoryDef(liveOnEntry)
8; CHECK-NEXT:   %call = call noalias ptr @_Znwm(i64 4)
9  %call = call noalias ptr @_Znwm(i64 4)
10; CHECK: 2 = MemoryDef(1)
11; CHECK-NEXT:   %call1 = call noalias ptr @_Znwm(i64 4)
12  %call1 = call noalias ptr @_Znwm(i64 4)
13; CHECK: 3 = MemoryDef(2)
14; CHECK-NEXT:   store i32 5, ptr %call, align 4
15  store i32 5, ptr %call, align 4
16; CHECK: 4 = MemoryDef(3)
17; CHECK-NEXT:   store i32 7, ptr %call1, align 4
18  store i32 7, ptr %call1, align 4
19; NOLIMIT: MemoryUse(3)
20; NOLIMIT-NEXT:   %0 = load i32, ptr %call, align 4
21; LIMIT: MemoryUse(4)
22; LIMIT-NEXT:   %0 = load i32, ptr %call, align 4
23  %0 = load i32, ptr %call, align 4
24; NOLIMIT: MemoryUse(4)
25; NOLIMIT-NEXT:   %1 = load i32, ptr %call1, align 4
26; LIMIT: MemoryUse(4)
27; LIMIT-NEXT:   %1 = load i32, ptr %call1, align 4
28  %1 = load i32, ptr %call1, align 4
29; NOLIMIT: MemoryUse(3)
30; NOLIMIT-NEXT:   %2 = load i32, ptr %call, align 4
31; LIMIT: MemoryUse(4)
32; LIMIT-NEXT:   %2 = load i32, ptr %call, align 4
33  %2 = load i32, ptr %call, align 4
34; NOLIMIT: MemoryUse(4)
35; NOLIMIT-NEXT:   %3 = load i32, ptr %call1, align 4
36; LIMIT: MemoryUse(4)
37; LIMIT-NEXT:   %3 = load i32, ptr %call1, align 4
38  %3 = load i32, ptr %call1, align 4
39  %add = add nsw i32 %1, %3
40  ret i32 %add
41}
42
43
44declare noalias ptr @_Znwm(i64)
45