[Coverage] MCDC: Move findIndependencePairs deferred into MCDCRecord (#121188)
[llvm-project.git] / llvm / test / Analysis / MemorySSA / update-remove-dead-blocks.ll
blob26f1ad7c8bce2628f102c0548f8a3367d4b0c1c9
1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt -passes='loop-mssa(simple-loop-unswitch<nontrivial>,loop-reduce,loop-simplifycfg)' -verify-memoryssa -S %s | FileCheck %s
4 ; Test case for PR47557.
6 ; REQUIRES: x86-registered-target
8 target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
9 target triple = "x86_64-unknown-linux-gnu"
11 @a = external global i32, align 4
12 @c = external global [1 x i32], align 4
14 define ptr @test() {
15 ; CHECK-LABEL: @test(
16 ; CHECK-NEXT:  entry:
17 ; CHECK-NEXT:    switch i32 0, label [[ENTRY_SPLIT:%.*]] [
18 ; CHECK-NEXT:      i32 1, label [[FOR_BODY3SPLIT:%.*]]
19 ; CHECK-NEXT:      i32 2, label [[FOR_COND2_2_FOR_BODY3_CRIT_EDGE:%.*]]
20 ; CHECK-NEXT:    ]
21 ; CHECK:       entry.split:
22 ; CHECK-NEXT:    br label [[FOR_COND:%.*]]
23 ; CHECK:       for.cond:
24 ; CHECK-NEXT:    [[STOREMERGE:%.*]] = phi i64 [ 0, [[ENTRY_SPLIT]] ], [ [[INC7:%.*]], [[FOR_COND]] ]
25 ; CHECK-NEXT:    [[INC7]] = add nsw i64 [[STOREMERGE]], 1
26 ; CHECK-NEXT:    br label [[FOR_COND]]
27 ; CHECK:       for.body3split:
28 ; CHECK-NEXT:    br label [[FOR_BODY3:%.*]]
29 ; CHECK:       for.cond2.2.for.body3_crit_edge:
30 ; CHECK-NEXT:    br label [[FOR_BODY3]]
31 ; CHECK:       for.body3:
32 ; CHECK-NEXT:    [[STOREMERGE_LCSSA:%.*]] = phi i64 [ poison, [[FOR_COND2_2_FOR_BODY3_CRIT_EDGE]] ], [ poison, [[FOR_BODY3SPLIT]] ]
33 ; CHECK-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds [1 x i32], ptr @c, i64 0, i64 [[STOREMERGE_LCSSA]]
34 ; CHECK-NEXT:    ret ptr [[ARRAYIDX]]
36 entry:                                                ; preds = %entry
37   br label %for.cond
39 for.cond:                                         ; preds = %cleanup, %entry
40   %storemerge = phi i64 [ 0, %entry ], [ %inc7, %cleanup ]
41   br label %for.cond2.1
43 for.body3:                                        ; preds = %for.cond2.2, %for.cond2.1
44   %arrayidx = getelementptr inbounds [1 x i32], ptr @c, i64 0, i64 %storemerge
45   ret ptr %arrayidx
47 cleanup:                                          ; preds = %for.end5, %if.then
48   %inc7 = add nsw i64 %storemerge, 1
49   br label %for.cond
51 for.cond2.1:                                      ; preds = %for.cond
52   br i1 true, label %for.inc.1, label %for.body3
54 for.inc.1:                                        ; preds = %for.end.1
55   br i1 false, label %for.body.2, label %cleanup
57 for.body.2:                                       ; preds = %for.inc.1
58   store i32 0, ptr @a, align 4
59   br label %for.cond2.2
61 for.cond2.2:                                      ; preds = %for.body.2
62   br i1 true, label %cleanup, label %for.body3