1 files changed, 5 insertions, 0 deletions
diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyExplicitLocals.cpp b/llvm/lib/Target/WebAssembly/WebAssemblyExplicitLocals.cpp
index 7746316..cb7bcf3 100644
--- a/llvm/lib/Target/WebAssembly/WebAssemblyExplicitLocals.cpp
+++ b/llvm/lib/Target/WebAssembly/WebAssemblyExplicitLocals.cpp
@@ -316,6 +316,9 @@ bool WebAssemblyExplicitLocals::runOnMachineFunction(MachineFunction &MF) {
         if (MO.isDef()) {
           assert(MI.getOpcode() == TargetOpcode::INLINEASM);
           unsigned LocalId = getLocalId(Reg2Local, CurLocal, OldReg);
+          // If this register operand is tied to another operand, we can't
+          // change it to an immediate. Untie it first.
+          MI.untieRegOperand(MI.getOperandNo(&MO));
           MO.ChangeToImmediate(LocalId);
           continue;
         }
@@ -331,6 +334,8 @@ bool WebAssemblyExplicitLocals::runOnMachineFunction(MachineFunction &MF) {
         // indices as immediates.
         if (MI.getOpcode() == TargetOpcode::INLINEASM) {
           unsigned LocalId = getLocalId(Reg2Local, CurLocal, OldReg);
+          // Untie it first if this reg operand is tied to another operand.
+          MI.untieRegOperand(MI.getOperandNo(&MO));
           MO.ChangeToImmediate(LocalId);
           continue;
         }