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-rw-r--r--llvm/test/CodeGen/WebAssembly/function-bitcasts-varargs.ll31
1 files changed, 31 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/WebAssembly/function-bitcasts-varargs.ll b/llvm/test/CodeGen/WebAssembly/function-bitcasts-varargs.ll
new file mode 100644
index 00000000000..c08fe8faa46
--- /dev/null
+++ b/llvm/test/CodeGen/WebAssembly/function-bitcasts-varargs.ll
@@ -0,0 +1,31 @@
+; RUN: llc < %s -asm-verbose=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]+}}, $pop{{[0-9]+$}}
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