xref: /llvm-project/llvm/test/Transforms/LICM/promote-order.ll (revision e390c229a438ed1eb3396df8fbeeda89c49474e6)
1; RUN: opt -aa-pipeline=tbaa,basic-aa -passes='require<aa>,require<target-ir>,require<scalar-evolution>,require<opt-remark-emit>,loop-mssa(licm)' -S %s | FileCheck %s
2
3; LICM should keep the stores in their original order when it sinks/promotes them.
4; rdar://12045203
5
6target 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-S128"
7target triple = "x86_64-apple-macosx10.8.0"
8
9@p = external global ptr
10
11define ptr @_Z4doiti(i32 %n, ptr %tmp1, ptr %tmp3) nounwind {
12; CHECK-LABEL: for.body.lr.ph:
13; CHECK: store float 1.000000e+00, ptr %tmp1
14; CHECK: store i32 1, ptr %tmp3
15; CHECK-LABEL: for.cond.for.end_crit_edge:
16
17entry:
18  %cmp1 = icmp slt i32 0, %n
19  br i1 %cmp1, label %for.body.lr.ph, label %for.end
20
21for.body.lr.ph:                                   ; preds = %entry
22  br label %for.body
23
24for.body:                                         ; preds = %for.body, %for.body.lr.ph
25  %i.02 = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %for.body ]
26  store float 1.000000e+00, ptr %tmp1, align 4, !tbaa !1
27  store i32 1, ptr %tmp3, align 4, !tbaa !2
28  %inc = add nsw i32 %i.02, 1
29  %cmp = icmp slt i32 %inc, %n
30  br i1 %cmp, label %for.body, label %for.cond.for.end_crit_edge
31
32for.cond.for.end_crit_edge:                       ; preds = %for.body
33  %split = phi ptr [ %tmp3, %for.body ]
34  br label %for.end
35
36for.end:                                          ; preds = %for.cond.for.end_crit_edge, %entry
37  %r.0.lcssa = phi ptr [ %split, %for.cond.for.end_crit_edge ], [ undef, %entry ]
38  ret ptr %r.0.lcssa
39}
40
41!0 = !{!"minimal TBAA"}
42!1 = !{!3, !3, i64 0}
43!2 = !{!4, !4, i64 0}
44!3 = !{!"float", !0}
45!4 = !{!"int", !0}
46