1; XFAIL: * 2; RUN: opt -basic-aa -dse -S < %s | FileCheck %s 3 4target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64" 5target triple = "x86_64-apple-macosx10.7.0" 6 7; Sanity tests for atomic stores. 8; Note that it turns out essentially every transformation DSE does is legal on 9; atomic ops, just some transformations are not allowed across release-acquire pairs. 10 11@x = common global i32 0, align 4 12@y = common global i32 0, align 4 13 14; DSE across monotonic load (allowed as long as the eliminated store isUnordered) 15define i32 @test9() { 16; CHECK-LABEL: test9 17; CHECK-NOT: store i32 0 18; CHECK: store i32 1 19 store i32 0, i32* @x 20 %x = load atomic i32, i32* @y monotonic, align 4 21 store i32 1, i32* @x 22 ret i32 %x 23} 24