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[AST] Clarify printing of unknown size locations [NFC] 

Printing "unknown" is much more clear than an arbitrary large integer

llvm-svn: 340108
This commit is contained in:
Philip Reames 2018-08-17 23:17:31 +00:00
parent be8ebccaed
commit 96bc076c3a
2 changed files with 26 additions and 1 deletions
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5
llvm/lib/Analysis/AliasSetTracker.cpp
View File

@ -603,7 +603,10 @@ void AliasSet::print(raw_ostream &OS) const {
for (iterator I = begin(), E = end(); I != E; ++I) {
if (I != begin()) OS << ", ";
I.getPointer()->printAsOperand(OS << "(");
OS << ", " << I.getSize() << ")";
if (I.getSize() == MemoryLocation::UnknownSize)
OS << ", unknown)";
else
OS << ", " << I.getSize() << ")";
}
}
if (!UnknownInsts.empty()) {

22
llvm/test/Analysis/AliasSet/memtransfer.ll
View File

@ -3,6 +3,28 @@
@s = global i8 1, align 1
@d = global i8 2, align 1
; CHECK: Alias sets for function 'test_known_size':
; CHECK: Alias Set Tracker: 2 alias sets for 2 pointer values.
; CHECK: AliasSet[0x{{[0-9a-f]+}}, 1] must alias, Ref Pointers: (i8* %s, 1)
; CHECK: AliasSet[0x{{[0-9a-f]+}}, 1] must alias, Mod Pointers: (i8* %d, 1)
define void @test_known_size(i8* noalias %s, i8* noalias %d) {
entry:
call void @llvm.memcpy.p0i8.p0i8.i64(i8* %d, i8* %s, i64 1, i1 false)
ret void
}
; CHECK: Alias sets for function 'test_unknown_size':
; CHECK: Alias Set Tracker: 2 alias sets for 2 pointer values.
; CHECK: AliasSet[0x{{[0-9a-f]+}}, 1] must alias, Ref Pointers: (i8* %s, unknown)
; CHECK: AliasSet[0x{{[0-9a-f]+}}, 1] must alias, Mod Pointers: (i8* %d, unknown)
define void @test_unknown_size(i8* noalias %s, i8* noalias %d, i64 %len) {
entry:
call void @llvm.memcpy.p0i8.p0i8.i64(i8* %d, i8* %s, i64 %len, i1 false)
ret void
}
; CHECK: Alias sets for function 'test1':
; CHECK: Alias Set Tracker: 3 alias sets for 4 pointer values.
; CHECK: AliasSet[0x{{[0-9a-f]+}}, 1] must alias, Mod Pointers: (i8* %a, 1)