xref: /llvm-project/llvm/test/Transforms/JumpThreading/2011-04-14-InfLoop.ll (revision b6909fe9ca1789db98c3481977468d33e9886182)
1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2; RUN: opt -S -passes=jump-threading < %s | FileCheck %s
3; <rdar://problem/9284786>
4
5%0 = type <{ i64, i16, i64, i8, i8 }>
6
7@g_338 = external global %0, align 8
8
9define void @func_1() nounwind ssp {
10; CHECK-LABEL: @func_1(
11; CHECK-NEXT:  entry:
12; CHECK-NEXT:    ret void
13; CHECK:       for.cond1177:
14; CHECK-NEXT:    [[INC1187:%.*]] = add nsw i32 0, 1
15; CHECK-NEXT:    [[CMP1179:%.*]] = icmp slt i32 [[INC1187]], 5
16; CHECK-NEXT:    br i1 [[CMP1179]], label [[FOR_COND1177:%.*]], label [[LAND_RHS1320:%.*]]
17; CHECK:       land.rhs1320:
18; CHECK-NEXT:    [[TMP1324:%.*]] = load volatile i64, ptr getelementptr inbounds ([[TMP0:%.*]], ptr @g_338, i64 0, i32 2), align 1
19; CHECK-NEXT:    br label [[IF_END_I:%.*]]
20; CHECK:       if.end.i:
21; CHECK-NEXT:    [[TOBOOL_PR_I:%.*]] = phi i1 [ false, [[IF_END_I]] ], [ false, [[LAND_RHS1320]] ]
22; CHECK-NEXT:    br i1 [[TOBOOL_PR_I]], label [[RETURN:%.*]], label [[IF_END_I]]
23; CHECK:       return:
24; CHECK-NEXT:    ret void
25;
26entry:
27  ret void
28
29for.cond1177:
30  %inc1187 = add nsw i32 0, 1
31  %cmp1179 = icmp slt i32 %inc1187, 5
32  br i1 %cmp1179, label %for.cond1177, label %land.rhs1320
33
34land.rhs1320:
35  %tmp1324 = load volatile i64, ptr getelementptr inbounds (%0, ptr @g_338, i64 0, i32 2), align 1
36  br label %if.end.i
37
38if.end.i:
39  %tobool.pr.i = phi i1 [ false, %if.end.i ], [ false, %land.rhs1320 ]
40  br i1 %tobool.pr.i, label %return, label %if.end.i
41
42return:
43  ret void
44}
45