[WebAssembly] Move call_indirect_alloca to call.ll

Not sure the distinction between `call.ll` and `call-indirect.ll`,
because `call.ll` also seems to contain many `call_indirect` tests. Also
before D147033 `call-indirect.ll` only contained a single test and it
also tests it with `obj2yaml`, so I guess that file was created for
testing functionalities for object files as well.

We can probably merge these two someday. But anyway, this moves
`call_indirect_alloca` I added in D147033 to `call.ll`, given that that
file contains more `call_indirect` tests and I'm planning to add more
`call_indirect` tests in a followup CL.

Reviewed By: tlively

Differential Revision: https://reviews.llvm.org/D147396

llvm/test/CodeGen/WebAssembly/call-indirect.ll

@@ -18,33 +18,12 @@ define void @call_indirect_void(ptr %callee) {
   ret void
 }
 
-; CHECK-LABEL: call_indirect_alloca:
-; CHECK-NEXT: .functype call_indirect_alloca () -> ()
-; CHECK:      local.tee  0
-; CHECK-NEXT: global.set  __stack_pointer
-; CHECK-NEXT: local.get  0
-; CHECK-NEXT: i32.const  12
-; CHECK-NEXT: i32.add
-; REF:        call_indirect __indirect_function_table, () -> ()
-; NOREF:      call_indirect () -> ()
-define void @call_indirect_alloca() {
-entry:
-  %ptr = alloca i32, align 4
-  call void %ptr()
-  ret void
-}
-
 ; OBJ:    Imports:
 ; OBJ-NEXT:      - Module:          env
 ; OBJ-NEXT:        Field:           __linear_memory
 ; OBJ-NEXT:        Kind:            MEMORY
 ; OBJ-NEXT:        Memory:
 ; OBJ-NEXT:          Minimum:         0x0
 ; OBJ-NEXT:      - Module:          env
-; OBJ-NEXT:        Field:           __stack_pointer
-; OBJ-NEXT:        Kind:            GLOBAL
-; OBJ-NEXT:        GlobalType:      I32
-; OBJ-NEXT:        GlobalMutable:   true
-; OBJ-NEXT:      - Module:          env
 ; OBJ-NEXT:        Field:           __indirect_function_table
 ; OBJ-NEXT:        Kind:            TABLE

llvm/test/CodeGen/WebAssembly/call.ll

@@ -236,6 +236,21 @@ bb2:
   ret void
 }
 
+; Allocas should be lowered to call_indirects.
+; CHECK-LABEL: call_indirect_alloca:
+; CHECK:      local.tee  $push{{.*}}=, [[L0:[0-9]+]]
+; CHECK-NEXT: global.set  __stack_pointer
+; CHECK-NEXT: local.get  $push{{.*}}=, [[L0]]
+; CHECK-NEXT: i32.const  $push{{.*}}=, 12
+; CHECK-NEXT: i32.add
+; CHECK-NEXT: call_indirect  $pop{{.*}}
+define void @call_indirect_alloca() {
+entry:
+  %ptr = alloca i32, align 4
+  call void %ptr()
+  ret void
+}
+
 ; TODO: test the following:
 ;  - More argument combinations.
 ;  - Tail call.