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c537f79dcd
- Clear 'mayStore' flag when loading from the atomic variable before the spin loop - Clear kill flag from one use to multiple use in registers forming the address to that atomic variable - don't use a physical register as live-in register in BB (neither entry nor landing pad.) by copying it into virtual register (patch by Cameron Zwarich) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176538 91177308-0d34-0410-b5e6-96231b3b80d8
23 lines
476 B
LLVM
23 lines
476 B
LLVM
; RUN: llc < %s -mtriple=i686-none-linux -verify-machineinstrs | FileCheck %s
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define i32* @test_atomic_ptr_load(i32** %a0) {
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; CHECK: test_atomic_ptr_load
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; CHECK: movl
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; CHECK: movl
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; CHECK: ret
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0:
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%0 = load atomic i32** %a0 seq_cst, align 4
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ret i32* %0
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}
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define void @test_atomic_ptr_store(i32* %a0, i32** %a1) {
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; CHECK: test_atomic_ptr_store
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; CHECK: movl
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; CHECK: movl
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; CHECK: xchgl
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; CHECK: ret
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0:
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store atomic i32* %a0, i32** %a1 seq_cst, align 4
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ret void
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}
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