diff options
| -rw-r--r-- | llvm/lib/Target/WebAssembly/WebAssemblyRegColoring.cpp | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyRegColoring.cpp b/llvm/lib/Target/WebAssembly/WebAssemblyRegColoring.cpp index 9ec66595d8d..fd54701c35c 100644 --- a/llvm/lib/Target/WebAssembly/WebAssemblyRegColoring.cpp +++ b/llvm/lib/Target/WebAssembly/WebAssemblyRegColoring.cpp @@ -29,6 +29,10 @@ using namespace llvm; #define DEBUG_TYPE "wasm-reg-coloring" +static cl::opt<bool> + DisableRegColoring("disable-wasm-reg-coloring", cl::Hidden, cl::init(false), + cl::desc("Disable WebAssembly register coloring")); + namespace { class WebAssemblyRegColoring final : public MachineFunctionPass { public: @@ -76,6 +80,9 @@ bool WebAssemblyRegColoring::runOnMachineFunction(MachineFunction &MF) { << "********** Function: " << MF.getName() << '\n'; }); + if (DisableRegColoring) + return false; + // If there are calls to setjmp or sigsetjmp, don't perform coloring. Virtual // registers could be modified before the longjmp is executed, resulting in // the wrong value being used afterwards. (See <rdar://problem/8007500>.) |
