1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt < %s -scoped-noalias -tbaa -licm -S | FileCheck %s
4 ; This test case case is generated from the following C code with -fstrict-aliasing,
5 ; and after passing through -inline -mem2reg -loop-rotate -instcombine
6 ; void add(double *restrict data, int *restrict addend) {
10 ; void foo(double *data, int *addend) {
11 ; for (int i = 0; i < 1000; ++i) {
16 ; We want to make sure the load of addend gets hoisted, independent of the second load
17 ; load having different noalias metadata.
19 define void @foo(double* %data, i32* %addend) #0 {
20 ; CHECK: for.body.lr.ph:
21 ; CHECK-NEXT: [[TMP1:%.*]] = load i32, i32* [[ADDEND:%.*]], align 4, !tbaa !1
22 ; CHECK-NEXT: [[CONV:%.*]] = sitofp i32 [[TMP1]] to double
23 ; CHECK-NEXT: [[TMP2:%.*]] = load i32, i32* [[ADDEND]], align 4, !tbaa !1, !alias.scope !5, !noalias !8
24 ; CHECK-NEXT: [[CONV_I:%.*]] = sitofp i32 [[TMP2]] to double
26 %i = alloca i32, align 4
27 %0 = bitcast i32* %i to i8*
28 call void @llvm.lifetime.start.p0i8(i64 4, i8* %0) #2
29 store i32 0, i32* %i, align 4, !tbaa !1
30 br i1 true, label %for.body.lr.ph, label %for.cond.cleanup
32 for.body.lr.ph: ; preds = %entry
35 for.cond.for.cond.cleanup_crit_edge: ; preds = %for.inc
36 br label %for.cond.cleanup
38 for.cond.cleanup: ; preds = %for.cond.for.cond.cleanup_crit_edge, %entry
39 %1 = bitcast i32* %i to i8*
40 call void @llvm.lifetime.end.p0i8(i64 4, i8* %1) #2
43 for.body: ; preds = %for.body.lr.ph, %for.inc
44 %2 = load i32, i32* %addend, align 4, !tbaa !1
45 %conv = sitofp i32 %2 to double
46 %3 = load i32, i32* %i, align 4, !tbaa !1
47 %idxprom = sext i32 %3 to i64
48 %arrayidx = getelementptr inbounds double, double* %data, i64 %idxprom
49 %4 = load double, double* %arrayidx, align 8, !tbaa !5
50 %add = fadd double %4, %conv
51 store double %add, double* %arrayidx, align 8, !tbaa !5
52 %idxprom1 = sext i32 %3 to i64
53 %arrayidx2 = getelementptr inbounds double, double* %data, i64 %idxprom1
54 %5 = load i32, i32* %addend, align 4, !tbaa !1, !alias.scope !7, !noalias !10
55 %conv.i = sitofp i32 %5 to double
56 %6 = load double, double* %arrayidx2, align 8, !tbaa !5, !alias.scope !10, !noalias !7
57 %add.i = fadd double %6, %conv.i
58 store double %add.i, double* %arrayidx2, align 8, !tbaa !5, !alias.scope !10, !noalias !7
61 for.inc: ; preds = %for.body
62 %7 = load i32, i32* %i, align 4, !tbaa !1
63 %inc = add nsw i32 %7, 1
64 store i32 %inc, i32* %i, align 4, !tbaa !1
65 %cmp = icmp slt i32 %inc, 1000
66 br i1 %cmp, label %for.body, label %for.cond.for.cond.cleanup_crit_edge
68 for.end: ; preds = %for.cond.cleanup
72 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #0
73 declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) #0
75 attributes #0 = { argmemonly nounwind }
79 !0 = !{!"clang version 5.0.0 (llvm/trunk 299971)"}
81 !2 = !{!"int", !3, i64 0}
82 !3 = !{!"omnipotent char", !4, i64 0}
83 !4 = !{!"Simple C/C++ TBAA"}
85 !6 = !{!"double", !3, i64 0}
87 !8 = distinct !{!8, !9, !"add: %addend"}
88 !9 = distinct !{!9, !"add"}
90 !11 = distinct !{!11, !9, !"add: %data"}