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llvm-mirror/test/MC/WebAssembly/globals.s
Sam Clegg 4522227204 [WebAssembly] Add assembly syntax for mutable globals
This adds and optional ", immutable" to the end of a `.globaltype`
declaration.  I would have prefered to match the `.wat` syntax
where immutable is the default and `mut` is the signifier for
mutable globals.  Sadly changing the default would break backwards
compat with existing assembly in the wild so I think its best
to stick with this approach.

Differential Revision: https://reviews.llvm.org/D87515
2020-09-11 11:11:02 -07:00

86 lines
2.7 KiB
ArmAsm

# RUN: llvm-mc -triple=wasm32-unknown-unknown < %s | FileCheck %s
# RUN: llvm-mc -triple=wasm32-unknown-unknown -filetype=obj < %s | obj2yaml | FileCheck -check-prefix=BIN %s
# Tests creating an accessing actual wasm globals
.globl read_global
.globl write_global
.globaltype foo_global, i32
.globaltype global2, i64, immutable
.globaltype global3, f32
.globaltype global4, f64
read_global:
.functype read_global () -> (i32)
global.get foo_global
end_function
write_global:
.functype write_global (i32) -> ()
local.get 0
global.set foo_global
global.set global2
global.set global3
global.set global4
end_function
foo_global:
global2:
global3:
global4:
# CHECK: .globl read_global
# CNEXT: .globl write_global
# CHECK: .globaltype foo_global, i32
# CHECK: foo_global:
# BIN: - Type: GLOBAL
# BIN-NEXT: Globals:
# BIN-NEXT: - Index: 0
# BIN-NEXT: Type: I32
# BIN-NEXT: Mutable: true
# BIN-NEXT: InitExpr:
# BIN-NEXT: Opcode: I32_CONST
# BIN-NEXT: Value: 0
# BIN-NEXT: - Index: 1
# BIN-NEXT: Type: I64
# BIN-NEXT: Mutable: false
# BIN-NEXT: InitExpr:
# BIN-NEXT: Opcode: I64_CONST
# BIN-NEXT: Value: 0
# BIN: - Type: CUSTOM
# BIN-NEXT: Name: linking
# BIN-NEXT: Version: 2
# BIN-NEXT: SymbolTable:
# BIN-NEXT: - Index: 0
# BIN-NEXT: Kind: FUNCTION
# BIN-NEXT: Name: read_global
# BIN-NEXT: Flags: [ ]
# BIN-NEXT: Function: 0
# BIN-NEXT: - Index: 1
# BIN-NEXT: Kind: FUNCTION
# BIN-NEXT: Name: write_global
# BIN-NEXT: Flags: [ ]
# BIN-NEXT: Function: 1
# BIN-NEXT: - Index: 2
# BIN-NEXT: Kind: GLOBAL
# BIN-NEXT: Name: foo_global
# BIN-NEXT: Flags: [ BINDING_LOCAL ]
# BIN-NEXT: Global: 0
# BIN-NEXT: - Index: 3
# BIN-NEXT: Kind: GLOBAL
# BIN-NEXT: Name: global2
# BIN-NEXT: Flags: [ BINDING_LOCAL ]
# BIN-NEXT: Global: 1
# BIN-NEXT: - Index: 4
# BIN-NEXT: Kind: GLOBAL
# BIN-NEXT: Name: global3
# BIN-NEXT: Flags: [ BINDING_LOCAL ]
# BIN-NEXT: Global: 2
# BIN-NEXT: - Index: 5
# BIN-NEXT: Kind: GLOBAL
# BIN-NEXT: Name: global4
# BIN-NEXT: Flags: [ BINDING_LOCAL ]
# BIN-NEXT: Global: 3