Fix lowerCall vararg crash.

QuantumSegfault · QuantumSegfault · commit 63fc5302c7de · 2025-10-06T13:27:13.000-07:00
diff --git a/llvm/lib/Target/WebAssembly/GISel/WebAssemblyCallLowering.cpp b/llvm/lib/Target/WebAssembly/GISel/WebAssemblyCallLowering.cpp
@@ -976,8 +976,8 @@ bool WebAssemblyCallLowering::lowerCall(MachineIRBuilder &MIRBuilder,
     if (!Arg.Flags[0].isVarArg()) {
       for (unsigned Part = 0; Part < NumParts; ++Part) {
         CallInst.addUse(Arg.Regs[Part]);
-        ++NumFixedArgs;
       }
+      ++NumFixedArgs;
     }
   }
 

Original file line number	Diff line number	Diff line change
`@@ -976,8 +976,8 @@ bool WebAssemblyCallLowering::lowerCall(MachineIRBuilder &MIRBuilder,`
`976`	`976`	`if (!Arg.Flags[0].isVarArg()) {`
`977`	`977`	`for (unsigned Part = 0; Part < NumParts; ++Part) {`
`978`	`978`	`CallInst.addUse(Arg.Regs[Part]);`
`979`		`- ++NumFixedArgs;`
`980`	`979`	`}`
	`980`	`+ ++NumFixedArgs;`
`981`	`981`	`}`
`982`	`982`	`}`
`983`	`983`