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8e2b2ae80e
Summary: hwsync is only required for seq_cst fences, acquire and release one can use the cheaper lwsync. Test Plan: Added some cases to atomics.ll + make check-all Reviewers: jfb, wschmidt Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D5317 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218995 91177308-0d34-0410-b5e6-96231b3b80d8
30 lines
763 B
LLVM
30 lines
763 B
LLVM
; RUN: llc < %s -mtriple=powerpc-apple-darwin -march=ppc32 -verify-machineinstrs | FileCheck %s --check-prefix=CHECK
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; RUN: llc < %s -mtriple=powerpc-apple-darwin -march=ppc64 -verify-machineinstrs | FileCheck %s --check-prefix=CHECK
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; RUN: llc < %s -mtriple=powerpc-apple-darwin -mcpu=440 | FileCheck %s --check-prefix=PPC440
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; Fences
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define void @fence_acquire() {
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; CHECK-LABEL: fence_acquire
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; CHECK: sync 1
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; PPC440-NOT: sync 1
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; PPC440: msync
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fence acquire
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ret void
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}
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define void @fence_release() {
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; CHECK-LABEL: fence_release
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; CHECK: sync 1
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; PPC440-NOT: sync 1
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; PPC440: msync
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fence release
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ret void
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}
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define void @fence_seq_cst() {
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; CHECK-LABEL: fence_seq_cst
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; CHECK: sync 0
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; PPC440-NOT: sync 0
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; PPC440: msync
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fence seq_cst
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ret void
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}
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