1 ; RUN: llc < %s | FileCheck %s
3 ; This test checks that we do not merge stores together which have
4 ; dependencies through their non-chain operands (e.g. one store is the
5 ; chain ancestor of a load whose value is used in as the data for the
6 ; other store). Merging in such cases creates a loop in the DAG.
8 target datalayout = "e-m:e-i64:64-i128:128-n32:64-S128"
9 target triple = "aarch64--linux-android"
11 %"class.std::__1::complex.0.20.56.60.64.72.76.88.92.112.140.248" = type { float, float }
13 ; Function Attrs: noinline norecurse nounwind ssp uwtable
14 define void @fn(<2 x i64>* %argA, <2 x i64>* %argB, i64* %a) #0 align 2 {
15 %_p_vec_full = load <2 x i64>, <2 x i64>* %argA, align 4, !alias.scope !1, !noalias !3
16 %x = extractelement <2 x i64> %_p_vec_full, i32 1
17 store i64 %x, i64* %a, align 8, !alias.scope !4, !noalias !9
18 %_p_vec_full155 = load <2 x i64>, <2 x i64>* %argB, align 4, !alias.scope !1, !noalias !3
19 %y = extractelement <2 x i64> %_p_vec_full155, i32 0
20 %scevgep41 = getelementptr i64, i64* %a, i64 -1
21 store i64 %y, i64* %scevgep41, align 8, !alias.scope !4, !noalias !9
27 attributes #0 = { noinline norecurse nounwind ssp uwtable "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "polly-optimized" "stack-protector-buffer-size"="8" "target-features"="+crc,+crypto,+neon" "unsafe-fp-math"="false" "use-soft-float"="false" }
31 !0 = !{!"Snapdragon LLVM ARM Compiler 3.8.0 (based on LLVM 3.8.0)"}
32 !1 = distinct !{!1, !2, !"polly.alias.scope.rhs"}
33 !2 = distinct !{!2, !"polly.alias.scope.domain"}
34 !3 = !{!4, !5, !6, !7, !8}
35 !4 = distinct !{!4, !2, !"polly.alias.scope.blockB"}
36 !5 = distinct !{!5, !2, !"polly.alias.scope.add28.lcssa.reg2mem"}
37 !6 = distinct !{!6, !2, !"polly.alias.scope.count.0.lcssa.reg2mem"}
38 !7 = distinct !{!7, !2, !"polly.alias.scope.mul"}
39 !8 = distinct !{!8, !2, !"polly.alias.scope.add28.us.lcssa.reg2mem"}
40 !9 = !{!1, !5, !6, !7, !8}