| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt -S -passes='loop-mssa(licm)' < %s | FileCheck %s |
| @e = external dso_local global i32*, align 8 |
| |
| define void @main() { |
| ; CHECK-LABEL: @main( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: br label [[LOOP1:%.*]] |
| ; CHECK: loop1: |
| ; CHECK-NEXT: br label [[LOOP2:%.*]] |
| ; CHECK: loop2: |
| ; CHECK-NEXT: br i1 false, label [[LOOP2_LATCH:%.*]], label [[LOOP_LATCH:%.*]] |
| ; CHECK: loop2.latch: |
| ; CHECK-NEXT: br label [[LOOP2]] |
| ; CHECK: loop.latch: |
| ; CHECK-NEXT: br label [[LOOP1]] |
| ; |
| entry: |
| br label %loop1 |
| |
| loop1: |
| br label %loop2 |
| |
| loop2: |
| br i1 undef, label %loop2.latch, label %loop.latch |
| |
| loop2.latch: |
| store i32 0, i32* null, align 4 |
| br label %loop2 |
| |
| loop.latch: |
| store i32* null, i32** @e, align 8, !tbaa !0 |
| %ptr = load i32*, i32** @e, align 8, !tbaa !0 |
| store i32 0, i32* %ptr, align 4, !tbaa !4 |
| br label %loop1 |
| } |
| |
| !0 = !{!1, !1, i64 0} |
| !1 = !{!"any pointer", !2, i64 0} |
| !2 = !{!"omnipotent char", !3, i64 0} |
| !3 = !{!"Simple C/C++ TBAA"} |
| !4 = !{!5, !5, i64 0} |
| !5 = !{!"int", !2, i64 0} |
