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[AArch64] [Windows] Emit unwind tables by default. 

Unwind tables are necessary even in code that doesn't support
exceptions.  The tables are used for setjmp(), and by debuggers.

Differential Revision: https://reviews.llvm.org/D53618

llvm-svn: 345781
This commit is contained in:
Eli Friedman 2018-10-31 21:39:41 +00:00
parent 72fe03f93b
commit e5f13519d4
1 changed files with 5 additions and 5 deletions
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10
clang/lib/Driver/ToolChains/MSVC.cpp
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@ -722,15 +722,15 @@ bool MSVCToolChain::IsIntegratedAssemblerDefault() const {
} }
bool MSVCToolChain::IsUnwindTablesDefault(const ArgList &Args) const { bool MSVCToolChain::IsUnwindTablesDefault(const ArgList &Args) const {
// Emit unwind tables by default on Win64. All non-x86_32 Windows platforms
// such as ARM and PPC actually require unwind tables, but LLVM doesn't know
// how to generate them yet.
// Don't emit unwind tables by default for MachO targets. // Don't emit unwind tables by default for MachO targets.
if (getTriple().isOSBinFormatMachO()) if (getTriple().isOSBinFormatMachO())
return false; return false;
return getArch() == llvm::Triple::x86_64; // All non-x86_32 Windows targets require unwind tables. However, LLVM
// doesn't know how to generate them for all targets, so only enable
// the ones that are actually implemented.
return getArch() == llvm::Triple::x86_64 ||
getArch() == llvm::Triple::aarch64;
} }
bool MSVCToolChain::isPICDefault() const { bool MSVCToolChain::isPICDefault() const {