1 files changed, 56 insertions, 0 deletions
diff --git a/test/CodeGen/WebAssembly/function-bitcasts.ll b/test/CodeGen/WebAssembly/function-bitcasts.ll
new file mode 100644
index 0000000000000..49980da6eb8fe
--- /dev/null
+++ b/test/CodeGen/WebAssembly/function-bitcasts.ll
@@ -0,0 +1,56 @@
+; RUN: llc < %s -asm-verbose=false | FileCheck %s
+
+; Test that function pointer casts are replaced with wrappers.
+
+target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
+target triple = "wasm32-unknown-unknown"
+
+; CHECK-LABEL: test:
+; CHECK-NEXT: call        .Lbitcast@FUNCTION{{$}}
+; CHECK-NEXT: call        .Lbitcast.1@FUNCTION{{$}}
+; CHECK-NEXT: i32.const   $push[[L0:[0-9]+]]=, 0
+; CHECK-NEXT: call        .Lbitcast.2@FUNCTION, $pop[[L0]]{{$}}
+; CHECK-NEXT: i32.call    $drop=, .Lbitcast.3@FUNCTION{{$}}
+; CHECK-NEXT: call        foo2@FUNCTION{{$}}
+; CHECK-NEXT: call        foo3@FUNCTION{{$}}
+; CHECK-NEXT: .endfunc
+
+; CHECK-LABEL: .Lbitcast:
+; CHECK-NEXT: .local      i32
+; CHECK-NEXT: call        has_i32_arg@FUNCTION, $0{{$}}
+; CHECK-NEXT: .endfunc
+
+; CHECK-LABEL: .Lbitcast.1:
+; CHECK-NEXT: call        $drop=, has_i32_ret@FUNCTION{{$}}
+; CHECK-NEXT: .endfunc
+
+; CHECK-LABEL: .Lbitcast.2:
+; CHECK-NEXT: .param      i32
+; CHECK-NEXT: call        foo0@FUNCTION{{$}}
+; CHECK-NEXT: .endfunc
+
+; CHECK-LABEL: .Lbitcast.3:
+; CHECK-NEXT: .result     i32
+; CHECK-NEXT: .local      i32
+; CHECK-NEXT: call        foo1@FUNCTION{{$}}
+; CHECK-NEXT: copy_local  $push0=, $0
+; CHECK-NEXT: .endfunc
+
+declare void @has_i32_arg(i32)
+declare i32 @has_i32_ret()
+
+declare void @foo0()
+declare void @foo1()
+declare void @foo2()
+declare void @foo3()
+
+define void @test() {
+entry:
+  call void bitcast (void (i32)* @has_i32_arg to void ()*)()
+  call void bitcast (i32 ()* @has_i32_ret to void ()*)()
+  call void bitcast (void ()* @foo0 to void (i32)*)(i32 0)
+  %t = call i32 bitcast (void ()* @foo1 to i32 ()*)()
+  call void bitcast (void ()* @foo2 to void ()*)()
+  call void @foo3()
+  ret void
+}