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1# RUN: llc -mtriple=wasm32-unknown-unknown -run-pass wasm-reg-stackify -run-pass wasm-explicit-locals %s -o - | FileCheck %s2 3# In the two tests below, without compiler_fence or atomic.fence in between,4# memory.atomic.notify and i32.add will be reordered by register stackify pass5# to meet 'call @foo''s requirements. But because we have fences between6# memory.atomic.notify and i32.add, they cannot be reordered, and local.set and7# local.get are inserted to save and load memory.atomic.notify's return value.8 9--- |10 target triple = "wasm32-unknown-unknown"11 12 declare void @foo(i32, i32)13 define void @compiler_fence_test(i32) {14 ret void15 }16 define void @atomic_fence_test(i32) {17 ret void18 }19...20---21# CHECK-LABEL: name: compiler_fence_test22name: compiler_fence_test23liveins:24 - { reg: '$arguments' }25tracksRegLiveness: true26body: |27 bb.0:28 ; CHECK: %[[REG:[0-9]+]]:i32 = MEMORY_ATOMIC_NOTIFY_A3229 ; CHECK: LOCAL_SET_I32 [[LOCAL:[0-9]+]], %[[REG]]30 ; CHECK: COMPILER_FENCE31 ; CHECK: ADD_I3232 ; CHECK: LOCAL_GET_I32 [[LOCAL]]33 ; CHECK: CALL @foo34 35 liveins: $arguments36 %0:i32 = CONST_I32 0, implicit-def $arguments37 %1:i32 = MEMORY_ATOMIC_NOTIFY_A32 2, 0, %0:i32, %0:i32, implicit-def $arguments38 COMPILER_FENCE implicit-def $arguments39 %2:i32 = ADD_I32 %0:i32, %0:i32, implicit-def $arguments40 CALL @foo, %2:i32, %1:i32, implicit-def $arguments41 RETURN implicit-def $arguments42...43 44---45# CHECK-LABEL: name: atomic_fence_test46name: atomic_fence_test47liveins:48 - { reg: '$arguments' }49tracksRegLiveness: true50body: |51 bb.0:52 ; CHECK: %[[REG:[0-9]+]]:i32 = MEMORY_ATOMIC_NOTIFY_A3253 ; CHECK: LOCAL_SET_I32 [[LOCAL:[0-9]+]], %[[REG]]54 ; CHECK: ATOMIC_FENCE55 ; CHECK: ADD_I3256 ; CHECK: LOCAL_GET_I32 [[LOCAL]]57 ; CHECK: CALL @foo58 59 liveins: $arguments60 %0:i32 = CONST_I32 0, implicit-def $arguments61 %1:i32 = MEMORY_ATOMIC_NOTIFY_A32 2, 0, %0:i32, %0:i32, implicit-def $arguments62 ATOMIC_FENCE 0, implicit-def $arguments63 %2:i32 = ADD_I32 %0:i32, %0:i32, implicit-def $arguments64 CALL @foo, %2:i32, %1:i32, implicit-def $arguments65 RETURN implicit-def $arguments66...67