forked from OSchip/llvm-project
69 lines
2.1 KiB
Plaintext
69 lines
2.1 KiB
Plaintext
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# RUN: llc -mtriple=wasm32-unknown-unknown -run-pass wasm-reg-stackify -run-pass wasm-explicit-locals %s -o - | FileCheck %s
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# In the two tests below, without compiler_fence or atomic.fence in between,
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# atomic.notify and i32.add will be reordered by register stackify pass to meet
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# 'call @foo''s requirements. But because we have fences between atomic.notify
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# and i32.add, they cannot be reordered, and local.set and local.get are
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# inserted to save and load atomic.notify's return value.
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--- |
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target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
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target triple = "wasm32-unknown-unknown"
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declare void @foo(i32, i32)
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define void @compiler_fence_test(i32) {
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ret void
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}
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define void @atomic_fence_test(i32) {
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ret void
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}
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...
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---
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# CHECK-LABEL: name: compiler_fence_test
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name: compiler_fence_test
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liveins:
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- { reg: '$arguments' }
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tracksRegLiveness: true
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body: |
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bb.0:
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; CHECK: %[[REG:[0-9]+]]:i32 = ATOMIC_NOTIFY
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; CHECK: LOCAL_SET_I32 [[LOCAL:[0-9]+]], %[[REG]]
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; CHECK: COMPILER_FENCE
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; CHECK: ADD_I32
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; CHECK: LOCAL_GET_I32 [[LOCAL]]
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; CHECK: CALL_VOID @foo
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liveins: $arguments
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%0:i32 = CONST_I32 0, implicit-def $arguments
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%1:i32 = ATOMIC_NOTIFY 2, 0, %0:i32, %0:i32, implicit-def $arguments
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COMPILER_FENCE implicit-def $arguments
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%2:i32 = ADD_I32 %0:i32, %0:i32, implicit-def $arguments
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CALL_VOID @foo, %2:i32, %1:i32, implicit-def $arguments
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RETURN_VOID implicit-def $arguments
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...
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---
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# CHECK-LABEL: name: atomic_fence_test
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name: atomic_fence_test
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liveins:
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- { reg: '$arguments' }
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tracksRegLiveness: true
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body: |
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bb.0:
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; CHECK: %[[REG:[0-9]+]]:i32 = ATOMIC_NOTIFY
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; CHECK: LOCAL_SET_I32 [[LOCAL:[0-9]+]], %[[REG]]
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; CHECK: ATOMIC_FENCE
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; CHECK: ADD_I32
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; CHECK: LOCAL_GET_I32 [[LOCAL]]
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; CHECK: CALL_VOID @foo
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liveins: $arguments
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%0:i32 = CONST_I32 0, implicit-def $arguments
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%1:i32 = ATOMIC_NOTIFY 2, 0, %0:i32, %0:i32, implicit-def $arguments
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ATOMIC_FENCE 0, implicit-def $arguments
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%2:i32 = ADD_I32 %0:i32, %0:i32, implicit-def $arguments
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CALL_VOID @foo, %2:i32, %1:i32, implicit-def $arguments
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RETURN_VOID implicit-def $arguments
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...
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