Index: test/CodeGen/WebAssembly/inline-asm-roundtrip.ll
===================================================================
--- /dev/null
+++ test/CodeGen/WebAssembly/inline-asm-roundtrip.ll
@@ -0,0 +1,53 @@
+; RUN: llc < %s | llvm-mc -triple=wasm32-unknown-unknown-wasm | FileCheck %s
+
+; Test basic inline assembly can actually be assembled by the assembler.
+
+; .ll code below is the result of this code run thru
+; clang -target wasm32-unknown-unknown-wasm -O2 -S -emit-llvm test.c
+
+; int main(int argc, const char *argv[]) {
+;   int src = 1;
+;   int dst;
+;   asm ("i32.const\t2\n"
+;      "\tget_local\t%1\n"
+;      "\ti32.add\n"
+;      "\tset_local\t%0"
+;       : "=r" (dst)
+;       : "r" (src));
+;   return dst != 3;
+; }
+
+source_filename = "test.c"
+target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
+target triple = "wasm32-unknown-unknown-wasm"
+
+; CHECK-LABEL: main:
+; CHECK-NEXT:	.param  	i32, i32{{$}}
+; CHECK-NEXT:	.local  	i32{{$}}
+; CHECK-NEXT:	i32.const	1{{$}}
+; CHECK-NEXT:	set_local	2{{$}}
+; CHECK-NEXT:	i32.const	2{{$}}
+; CHECK-NEXT:	get_local	2{{$}}
+; CHECK-NEXT:	i32.add {{$}}
+; CHECK-NEXT:	set_local	2{{$}}
+; CHECK-NEXT:	get_local	2{{$}}
+; CHECK-NEXT:	i32.const	3{{$}}
+; CHECK-NEXT:	i32.ne {{$}}
+
+define hidden i32 @main(i32 %argc, i8** nocapture readnone %argv) local_unnamed_addr #0 {
+entry:
+  %0 = tail call i32 asm "i32.const\092\0A\09get_local\09$1\0A\09i32.add\0A\09set_local\09$0", "=r,r"(i32 1) #1, !srcloc !2
+  %cmp = icmp ne i32 %0, 3
+  %conv = zext i1 %cmp to i32
+  ret i32 %conv
+}
+
+attributes #0 = { nounwind readnone "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="generic" "unsafe-fp-math"="false" "use-soft-float"="false" }
+attributes #1 = { nounwind readnone }
+
+!llvm.module.flags = !{!0}
+!llvm.ident = !{!1}
+
+!0 = !{i32 1, !"wchar_size", i32 4}
+!1 = !{!"clang version 8.0.0 (trunk 343492) (llvm/trunk 343501)"}
+!2 = !{i32 117, i32 140, i32 165, i32 184}