76 lines · plain
1; RUN: opt -passes='simple-loop-unswitch<nontrivial>' -S < %s | FileCheck %s2 3define i32 @basic(i32 %N, i1 %cond, i32 %select_input) !dbg !5 {4; CHECK-LABEL: define i32 @basic(5 6; Check that SimpleLoopUnswitch's unswitchNontrivialInvariants() drops the7; debug location of the hoisted terminator and doesn't give any debug location8; to the new freeze, since it's inserted in a hoist block.9; Also check that in unswitchNontrivialInvariants(), the new br instruction10; inherits the debug location of the old terminator in the same block.11 12; CHECK: entry:13; CHECK-NEXT: [[COND_FR:%.*]] = freeze i1 [[COND:%.*]]{{$}}14; CHECK-NEXT: br i1 [[COND_FR]], label %[[ENTRY_SPLIT_US:.*]], label %[[ENTRY_SPLIT:.*]]{{$}}15; CHECK: for.body.us:16; CHECK-NEXT: br label %0, !dbg [[DBG13:![0-9]+]]17 18; Check that in turnSelectIntoBranch(), the new phi inherits the debug19; location of the old select instruction replaced.20 21; CHECK: 1:22; CHECK-NEXT: [[UNSWITCHED_SELECT_US:%.*]] = phi i32 [ [[SELECT_INPUT:%.*]], %0 ], !dbg [[DBG13]]23 24; Check that in BuildClonedLoopBlocks(), the new phi inherits the debug25; location of the instruction at the insertion point and the new br26; instruction inherits the debug location of the old terminator.27 28; CHECK: for.body:29; CHECK-NEXT: br label %2, !dbg [[DBG13]]30; CHECK: for.cond.cleanup:31; CHECK: [[DOTUS_PHI:%.*]] = phi i32 [ [[RES_LCSSA:%.*]], %[[FOR_COND_CLEANUP_SPLIT:.*]] ], [ [[RES_LCSSA_US:%.*]], %[[FOR_COND_CLEANUP_SPLIT_US:.*]] ], !dbg [[DBG17:![0-9]+]]32entry:33 br label %for.cond, !dbg !834 35for.cond: ; preds = %for.body, %entry36 %res = phi i32 [ 0, %entry ], [ %add, %for.body ], !dbg !937 %i = phi i32 [ 0, %entry ], [ %inc, %for.body ], !dbg !1038 %cmp = icmp slt i32 %i, %N, !dbg !1139 br i1 %cmp, label %for.body, label %for.cond.cleanup, !dbg !1240 41for.body: ; preds = %for.cond42 %cond1 = select i1 %cond, i32 %select_input, i32 42, !dbg !1343 %add = add nuw nsw i32 %cond1, %res, !dbg !1444 %inc = add nuw nsw i32 %i, 1, !dbg !1545 br label %for.cond, !dbg !1646 47for.cond.cleanup: ; preds = %for.cond48 ret i32 %res, !dbg !1749}50 51!llvm.dbg.cu = !{!0}52!llvm.debugify = !{!2, !3}53!llvm.module.flags = !{!4}54 55; CHECK: [[DBG13]] = !DILocation(line: 6,56; CHECK: [[DBG17]] = !DILocation(line: 10,57 58!0 = distinct !DICompileUnit(language: DW_LANG_C, file: !1, producer: "debugify", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug)59!1 = !DIFile(filename: "main.ll", directory: "/")60!2 = !{i32 10}61!3 = !{i32 0}62!4 = !{i32 2, !"Debug Info Version", i32 3}63!5 = distinct !DISubprogram(name: "basic", linkageName: "basic", scope: null, file: !1, line: 1, type: !6, scopeLine: 1, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0)64!6 = !DISubroutineType(types: !7)65!7 = !{}66!8 = !DILocation(line: 1, column: 1, scope: !5)67!9 = !DILocation(line: 2, column: 1, scope: !5)68!10 = !DILocation(line: 3, column: 1, scope: !5)69!11 = !DILocation(line: 4, column: 1, scope: !5)70!12 = !DILocation(line: 5, column: 1, scope: !5)71!13 = !DILocation(line: 6, column: 1, scope: !5)72!14 = !DILocation(line: 7, column: 1, scope: !5)73!15 = !DILocation(line: 8, column: 1, scope: !5)74!16 = !DILocation(line: 9, column: 1, scope: !5)75!17 = !DILocation(line: 10, column: 1, scope: !5)76