WebAssembly: update syntax

Summary:
Follow the same syntax as for the spec repo. Both have evolved slightly
independently and need to converge again.

This, along with wasmate changes, allows me to do the following:

  echo "int add(int a, int b) { return a + b; }" > add.c
  ./out/bin/clang -O2 -S --target=wasm32-unknown-unknown add.c -o add.wack
  ./experimental/prototype-wasmate/wasmate.py add.wack > add.wast
  ./sexpr-wasm-prototype/out/sexpr-wasm add.wast -o add.wasm
  ./sexpr-wasm-prototype/third_party/v8-native-prototype/v8/v8/out/Release/d8 -e "print(WASM.instantiateModule(readbuffer('add.wasm'), {print:print}).add(42, 1337));"

As you'd expect, the d8 shell prints out the right value.

Reviewers: sunfish

Subscribers: jfb, llvm-commits, dschuff

Differential Revision: http://reviews.llvm.org/D13712

llvm-svn: 250480
diff --git a/llvm/test/CodeGen/WebAssembly/func.ll b/llvm/test/CodeGen/WebAssembly/func.ll
index 355545a..7d16fd3 100644
--- a/llvm/test/CodeGen/WebAssembly/func.ll
+++ b/llvm/test/CodeGen/WebAssembly/func.ll
@@ -14,9 +14,10 @@
 
 ; CHECK-LABEL: f1:
 ; CHECK-NEXT: .result i32{{$}}
+; CHECK-NEXT: .local i32{{$}}
 ; CHECK-NEXT: i32.const 0{{$}}
-; CHECK-NEXT: set_local @0, pop{{$}}
-; CHECK-NEXT: return @0{{$}}
+; CHECK-NEXT: set_local 0, pop{{$}}
+; CHECK-NEXT: i32.return (get_local 0){{$}}
 ; CHECK: .size f1,
 define i32 @f1() {
   ret i32 0
@@ -26,9 +27,10 @@
 ; CHECK-NEXT: .param i32{{$}}
 ; CHECK-NEXT: .param f32{{$}}
 ; CHECK-NEXT: .result i32{{$}}
+; CHECK-NEXT: .local i32{{$}}
 ; CHECK-NEXT: i32.const 0{{$}}
-; CHECK-NEXT: set_local @2, pop{{$}}
-; CHECK-NEXT: return @2{{$}}
+; CHECK-NEXT: set_local 2, pop{{$}}
+; CHECK-NEXT: i32.return (get_local 2){{$}}
 ; CHECK: .size f2,
 define i32 @f2(i32 %p1, float %p2) {
   ret i32 0
@@ -37,7 +39,8 @@
 ; CHECK-LABEL: f3:
 ; CHECK-NEXT: .param i32{{$}}
 ; CHECK-NEXT: .param f32{{$}}
-; CHECK-NEXT: return{{$}}
+; CHECK-NOT: .local
+; CHECK-NEXT: void.return{{$}}
 ; CHECK: .size f3,
 define void @f3(i32 %p1, float %p2) {
   ret void