2 files changed, 27 insertions, 1 deletions
diff --git a/llvm/test/CodeGen/WebAssembly/function-bitcasts.ll b/llvm/test/CodeGen/WebAssembly/function-bitcasts.ll
index b3953c4f100..49980da6eb8 100644
--- a/llvm/test/CodeGen/WebAssembly/function-bitcasts.ll
+++ b/llvm/test/CodeGen/WebAssembly/function-bitcasts.ll
@@ -8,7 +8,7 @@ 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: 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{{$}}
diff --git a/llvm/test/CodeGen/WebAssembly/unsupported-function-bitcasts.ll b/llvm/test/CodeGen/WebAssembly/unsupported-function-bitcasts.ll
new file mode 100644
index 00000000000..ef4318ec299
--- /dev/null
+++ b/llvm/test/CodeGen/WebAssembly/unsupported-function-bitcasts.ll
@@ -0,0 +1,26 @@
+; RUN: llc < %s -asm-verbose=false | FileCheck %s
+
+; Test that function pointer casts that require conversions are not converted
+; to wrappers. In theory some conversions could be supported, but currently no
+; conversions are implemented.
+
+target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
+target triple = "wasm32-unknown-unknown"
+
+; CHECK-LABEL: test:
+; CHECK-NEXT: i32.const   $push[[L0:[0-9]+]]=, 0{{$}}
+; CHECK-NEXT: call        has_i64_arg@FUNCTION, $pop[[L0]]{{$}}
+; CHECK-NEXT: i32.call    $drop=, has_i64_ret@FUNCTION{{$}}
+; CHECK-NEXT: .endfunc
+
+; CHECK-NOT: .Lbitcast
+
+declare void @has_i64_arg(i64)
+declare i64 @has_i64_ret()
+
+define void @test() {
+entry:
+  call void bitcast (void (i64)* @has_i64_arg to void (i32)*)(i32 0)
+  %t = call i32 bitcast (i64 ()* @has_i64_ret to i32 ()*)()
+  ret void
+}