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-rw-r--r--llvm/lib/Target/X86/X86TargetMachine.cpp9
1 files changed, 8 insertions, 1 deletions
diff --git a/llvm/lib/Target/X86/X86TargetMachine.cpp b/llvm/lib/Target/X86/X86TargetMachine.cpp
index 547fa8eeebc..684e1fc573d 100644
--- a/llvm/lib/Target/X86/X86TargetMachine.cpp
+++ b/llvm/lib/Target/X86/X86TargetMachine.cpp
@@ -250,12 +250,19 @@ void X86TargetMachine::setCodeModelForJIT() {
setCodeModel(CodeModel::Small);
}
+/// getLSDAEncoding - Returns the LSDA pointer encoding. The choices are 4-byte,
+/// 8-byte, and target default. The CIE is hard-coded to indicate that the LSDA
+/// pointer in the FDE section is an "sdata4", and should be encoded as a 4-byte
+/// pointer by default. However, some systems may require a different size due
+/// to bugs or other conditions. We will default to a 4-byte encoding unless the
+/// system tells us otherwise.
+///
/// FIXME: This call-back isn't good! We should be using the correct encoding
/// regardless of the system. However, there are some systems which have bugs
/// that prevent this from occuring.
DwarfLSDAEncoding::Encoding X86TargetMachine::getLSDAEncoding() const {
if (Subtarget.isTargetDarwin() && Subtarget.getDarwinVers() != 10)
- return DwarfLSDAEncoding::FourByte;
+ return DwarfLSDAEncoding::Default;
return DwarfLSDAEncoding::EightByte;
}
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