diff options
author | Dan Gohman <gohman@apple.com> | 2010-10-19 17:06:23 +0000 |
---|---|---|
committer | Dan Gohman <gohman@apple.com> | 2010-10-19 17:06:23 +0000 |
commit | f3a925dc7a14ade42da442b49c304c064954c1d4 (patch) | |
tree | 0f7a7d937d3533fbb8102a7c034ebdfcc0b8dfa9 /lib/Analysis/Lint.cpp | |
parent | 99fca5de96d3435e8eb7c84e8366cee98ef5416a (diff) | |
download | llvm-f3a925dc7a14ade42da442b49c304c064954c1d4.tar.gz llvm-f3a925dc7a14ade42da442b49c304c064954c1d4.tar.bz2 llvm-f3a925dc7a14ade42da442b49c304c064954c1d4.tar.xz |
Consistently use AliasAnalysis::UnknownSize instead of hardcoding ~0u.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116815 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Analysis/Lint.cpp')
-rw-r--r-- | lib/Analysis/Lint.cpp | 41 |
1 files changed, 25 insertions, 16 deletions
diff --git a/lib/Analysis/Lint.cpp b/lib/Analysis/Lint.cpp index f7be329852..ab4e92d411 100644 --- a/lib/Analysis/Lint.cpp +++ b/lib/Analysis/Lint.cpp @@ -191,7 +191,8 @@ void Lint::visitCallSite(CallSite CS) { Instruction &I = *CS.getInstruction(); Value *Callee = CS.getCalledValue(); - visitMemoryReference(I, Callee, ~0u, 0, 0, MemRef::Callee); + visitMemoryReference(I, Callee, AliasAnalysis::UnknownSize, + 0, 0, MemRef::Callee); if (Function *F = dyn_cast<Function>(findValue(Callee, /*OffsetOk=*/false))) { Assert1(CS.getCallingConv() == F->getCallingConv(), @@ -264,9 +265,11 @@ void Lint::visitCallSite(CallSite CS) { case Intrinsic::memcpy: { MemCpyInst *MCI = cast<MemCpyInst>(&I); // TODO: If the size is known, use it. - visitMemoryReference(I, MCI->getDest(), ~0u, MCI->getAlignment(), 0, + visitMemoryReference(I, MCI->getDest(), AliasAnalysis::UnknownSize, + MCI->getAlignment(), 0, MemRef::Write); - visitMemoryReference(I, MCI->getSource(), ~0u, MCI->getAlignment(), 0, + visitMemoryReference(I, MCI->getSource(), AliasAnalysis::UnknownSize, + MCI->getAlignment(), 0, MemRef::Read); // Check that the memcpy arguments don't overlap. The AliasAnalysis API @@ -286,16 +289,19 @@ void Lint::visitCallSite(CallSite CS) { case Intrinsic::memmove: { MemMoveInst *MMI = cast<MemMoveInst>(&I); // TODO: If the size is known, use it. - visitMemoryReference(I, MMI->getDest(), ~0u, MMI->getAlignment(), 0, + visitMemoryReference(I, MMI->getDest(), AliasAnalysis::UnknownSize, + MMI->getAlignment(), 0, MemRef::Write); - visitMemoryReference(I, MMI->getSource(), ~0u, MMI->getAlignment(), 0, + visitMemoryReference(I, MMI->getSource(), AliasAnalysis::UnknownSize, + MMI->getAlignment(), 0, MemRef::Read); break; } case Intrinsic::memset: { MemSetInst *MSI = cast<MemSetInst>(&I); // TODO: If the size is known, use it. - visitMemoryReference(I, MSI->getDest(), ~0u, MSI->getAlignment(), 0, + visitMemoryReference(I, MSI->getDest(), AliasAnalysis::UnknownSize, + MSI->getAlignment(), 0, MemRef::Write); break; } @@ -305,24 +311,26 @@ void Lint::visitCallSite(CallSite CS) { "Undefined behavior: va_start called in a non-varargs function", &I); - visitMemoryReference(I, CS.getArgument(0), ~0u, 0, 0, - MemRef::Read | MemRef::Write); + visitMemoryReference(I, CS.getArgument(0), AliasAnalysis::UnknownSize, + 0, 0, MemRef::Read | MemRef::Write); break; case Intrinsic::vacopy: - visitMemoryReference(I, CS.getArgument(0), ~0u, 0, 0, MemRef::Write); - visitMemoryReference(I, CS.getArgument(1), ~0u, 0, 0, MemRef::Read); + visitMemoryReference(I, CS.getArgument(0), AliasAnalysis::UnknownSize, + 0, 0, MemRef::Write); + visitMemoryReference(I, CS.getArgument(1), AliasAnalysis::UnknownSize, + 0, 0, MemRef::Read); break; case Intrinsic::vaend: - visitMemoryReference(I, CS.getArgument(0), ~0u, 0, 0, - MemRef::Read | MemRef::Write); + visitMemoryReference(I, CS.getArgument(0), AliasAnalysis::UnknownSize, + 0, 0, MemRef::Read | MemRef::Write); break; case Intrinsic::stackrestore: // Stackrestore doesn't read or write memory, but it sets the // stack pointer, which the compiler may read from or write to // at any time, so check it for both readability and writeability. - visitMemoryReference(I, CS.getArgument(0), ~0u, 0, 0, - MemRef::Read | MemRef::Write); + visitMemoryReference(I, CS.getArgument(0), AliasAnalysis::UnknownSize, + 0, 0, MemRef::Read | MemRef::Write); break; } } @@ -495,12 +503,13 @@ void Lint::visitAllocaInst(AllocaInst &I) { } void Lint::visitVAArgInst(VAArgInst &I) { - visitMemoryReference(I, I.getOperand(0), ~0u, 0, 0, + visitMemoryReference(I, I.getOperand(0), AliasAnalysis::UnknownSize, 0, 0, MemRef::Read | MemRef::Write); } void Lint::visitIndirectBrInst(IndirectBrInst &I) { - visitMemoryReference(I, I.getAddress(), ~0u, 0, 0, MemRef::Branchee); + visitMemoryReference(I, I.getAddress(), AliasAnalysis::UnknownSize, 0, 0, + MemRef::Branchee); Assert1(I.getNumDestinations() != 0, "Undefined behavior: indirectbr with no destinations", &I); |