llvm-6502/test/CodeGen/X86/atomic-pointer.ll

; RUN: llc < %s -mtriple=i686-none-linux -verify-machineinstrs | FileCheck %s

define i32* @test_atomic_ptr_load(i32** %a0) {
; CHECK: test_atomic_ptr_load
; CHECK: movl
; CHECK: movl
; CHECK: ret
0:
  %0 = load atomic i32** %a0 seq_cst, align 4
  ret i32* %0
}

define void @test_atomic_ptr_store(i32* %a0, i32** %a1) {
; CHECK: test_atomic_ptr_store
; CHECK: movl
; CHECK: movl
; CHECK: xchgl
; CHECK: ret
0:
  store atomic i32* %a0, i32** %a1 seq_cst, align 4
  ret void
}
Fix PR15355 - 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 2013-03-06 00:17:04 +00:00			`; RUN: llc < %s -mtriple=i686-none-linux -verify-machineinstrs \| FileCheck %s`
Make atomic load and store of pointers work. Tighten verification of atomic operations so other unexpected operations don't slip through. Based on patch by Logan Chien. PR11786/PR13186. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162146 91177308-0d34-0410-b5e6-96231b3b80d8 2012-08-17 23:24:29 +00:00
			`define i32* @test_atomic_ptr_load(i32** %a0) {`
			`; CHECK: test_atomic_ptr_load`
			`; CHECK: movl`
			`; CHECK: movl`
			`; CHECK: ret`
			`0:`
			`%0 = load atomic i32** %a0 seq_cst, align 4`
			`ret i32* %0`
			`}`

			`define void @test_atomic_ptr_store(i32* %a0, i32** %a1) {`
			`; CHECK: test_atomic_ptr_store`
			`; CHECK: movl`
			`; CHECK: movl`
			`; CHECK: xchgl`
			`; CHECK: ret`
			`0:`
			`store atomic i32* %a0, i32** %a1 seq_cst, align 4`
			`ret void`
			`}`