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Change the generated code model to Large on Windows 64 bit #7489

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Feb 25, 2017
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Change the generated code model to Large on Windows 64 bit #7489

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6 changes: 5 additions & 1 deletion lib/IRGen/IRGen.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -499,7 +499,11 @@ swift::createTargetMachine(IRGenOptions &Opts, ASTContext &Ctx) {

// Create a target machine.
auto cmodel = CodeModel::Default;
if (Triple.isWindowsCygwinEnvironment())

// On Windows 64 bit, dlls are loaded above the max address for 32 bits.
// This means that a default CodeModel causes generated code to segfault
// when run.
if (Triple.isArch64Bit() && Triple.isOSWindows())
cmodel = CodeModel::Large;

llvm::TargetMachine *TargetMachine =
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