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Index: lib/Target/NVPTX/NVPTXTargetMachine.cpp
===================================================================
--- a/lib/Target/NVPTX/NVPTXTargetMachine.cpp
+++ b/lib/Target/NVPTX/NVPTXTargetMachine.cpp
@@ -44,6 +44,14 @@
cl::desc("Disable load/store vectorizer"),
cl::init(false), cl::Hidden);
+// TODO: Remove this flag when we are confident with no regressions.
+static cl::opt<bool> DisableRequireStructuredCFG(
+ "disable-nvptx-require-structured-cfg",
+ cl::desc("Transitional flag to turn off NVPTX's requirement on preserving "
+ "structured CFG. The requirement should be disabled only when "
+ "unexpected regressions happen."),
+ cl::init(false), cl::Hidden);
+
namespace llvm {
void initializeNVVMIntrRangePass(PassRegistry&);
@@ -108,6 +116,8 @@
drvInterface = NVPTX::NVCL;
else
drvInterface = NVPTX::CUDA;
+ if (!DisableRequireStructuredCFG)
+ setRequiresStructuredCFG(true);
initAsmInfo();
}
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