Imported Upstream version 5.18.0.246

Former-commit-id: 0c7ce5b1a7851e13f22acfd379b7f9fb304e4833

external/llvm/test/CodeGen/WebAssembly/function-bitcasts-varargs.ll

@@ -0,0 +1,31 @@
+; RUN: llc < %s -asm-verbose=false -wasm-temporary-workarounds=false | FileCheck %s
+
+; Test that function pointer casts casting away varargs are replaced with
+; wrappers.
+
+target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
+target triple = "wasm32-unknown-unknown-wasm"
+
+define void @callWithArgs() {
+entry:
+  call void bitcast (void (...)* @underspecified to void (i32, i32)*)(i32 0, i32 1)
+  call void(...) bitcast (void (i32, i32)* @specified to void (...)*)(i32 0, i32 1)
+  ret void
+}
+
+declare void @underspecified(...)
+declare void @specified(i32, i32)
+
+; CHECK: callWithArgs:
+; CHECK: i32.const	$push1=, 0
+; CHECK-NEXT: i32.const	$push0=, 1
+; CHECK-NEXT: call    	.Lbitcast@FUNCTION, $pop1, $pop0
+; CHECK: call    	.Lbitcast.1@FUNCTION, $pop{{[0-9]+$}}
+
+; CHECK: .Lbitcast:
+; CHECK-NEXT: .param  	i32, i32{{$}}
+; CHECK: call    	underspecified@FUNCTION, $pop{{[0-9]+$}}
+
+; CHECK: .Lbitcast.1:
+; CHECK-NEXT: .param  	i32{{$}}
+; CHECK: call    	specified@FUNCTION, $pop{{[0-9]+}}, $pop{{[0-9]+$}}