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Update clang to release_39 branch r279477.

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This commit is contained in:
Dimitry Andric 2016-08-24 17:43:49 +00:00
commit be69257a66
3 changed files with 16 additions and 10 deletions
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3
contrib/llvm/tools/clang/lib/CodeGen/CGExprScalar.cpp
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@ -2706,7 +2706,8 @@ Value *ScalarExprEmitter::EmitShl(const BinOpInfo &Ops) {
RHS = Builder.CreateIntCast(RHS, Ops.LHS->getType(), false, "sh_prom");
bool SanitizeBase = CGF.SanOpts.has(SanitizerKind::ShiftBase) &&
Ops.Ty->hasSignedIntegerRepresentation();
Ops.Ty->hasSignedIntegerRepresentation() &&
!CGF.getLangOpts().isSignedOverflowDefined();
bool SanitizeExponent = CGF.SanOpts.has(SanitizerKind::ShiftExponent);
// OpenCL 6.3j: shift values are effectively % word size of LHS.
if (CGF.getLangOpts().OpenCL)

21
contrib/llvm/tools/clang/lib/Driver/ToolChains.cpp
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@ -474,21 +474,26 @@ void DarwinClang::AddLinkRuntimeLibArgs(const ArgList &Args,
else if (isMacosxVersionLT(10, 6))
CmdArgs.push_back("-lgcc_s.10.5");
// For OS X, we thought we would only need a static runtime library when
// targeting 10.4, to provide versions of the static functions which were
// omitted from 10.4.dylib.
// Originally for OS X, we thought we would only need a static runtime
// library when targeting 10.4, to provide versions of the static functions
// which were omitted from 10.4.dylib. This led to the creation of the 10.4
// builtins library.
//
// Unfortunately, that turned out to not be true, because Darwin system
// headers can still use eprintf on i386, and it is not exported from
// libSystem. Therefore, we still must provide a runtime library just for
// the tiny tiny handful of projects that *might* use that symbol.
if (isMacosxVersionLT(10, 5)) {
//
// Then over time, we figured out it was useful to add more things to the
// runtime so we created libclang_rt.osx.a to provide new functions when
// deploying to old OS builds, and for a long time we had both eprintf and
// osx builtin libraries. Which just seems excessive. So with PR 28855, we
// are removing the eprintf library and expecting eprintf to be provided by
// the OS X builtins library.
if (isMacosxVersionLT(10, 5))
AddLinkRuntimeLib(Args, CmdArgs, "libclang_rt.10.4.a");
} else {
if (getTriple().getArch() == llvm::Triple::x86)
AddLinkRuntimeLib(Args, CmdArgs, "libclang_rt.eprintf.a");
else
AddLinkRuntimeLib(Args, CmdArgs, "libclang_rt.osx.a");
}
}
}

2
contrib/llvm/tools/clang/lib/Sema/SemaExpr.cpp
View File

@ -8567,7 +8567,7 @@ static void DiagnoseBadShiftValues(Sema& S, ExprResult &LHS, ExprResult &RHS,
// If LHS does not have a signed type and non-negative value
// then, the behavior is undefined. Warn about it.
if (Left.isNegative()) {
if (Left.isNegative() && !S.getLangOpts().isSignedOverflowDefined()) {
S.DiagRuntimeBehavior(Loc, LHS.get(),
S.PDiag(diag::warn_shift_lhs_negative)
<< LHS.get()->getSourceRange());