| ; RUN: opt < %s -S -passes=loop-unroll -unroll-runtime -unroll-count=2 -unroll-runtime-epilog=true | FileCheck %s -check-prefix=EPILOG |
| ; RUN: opt < %s -S -passes=loop-unroll -unroll-runtime -unroll-count=2 -unroll-runtime-epilog=false | FileCheck %s -check-prefix=PROLOG |
| |
| ; RUN: opt < %s -S -passes='require<opt-remark-emit>,loop-unroll' -unroll-runtime -unroll-count=2 -unroll-runtime-epilog=true | FileCheck %s -check-prefix=EPILOG |
| ; RUN: opt < %s -S -passes='require<opt-remark-emit>,loop-unroll' -unroll-runtime -unroll-count=2 -unroll-runtime-epilog=false | FileCheck %s -check-prefix=PROLOG |
| |
| ; This tests that setting the unroll count works |
| |
| |
| ; EPILOG: for.body.preheader: |
| ; EPILOG: br i1 %1, label %for.end.loopexit.unr-lcssa, label %for.body.preheader.new, !dbg [[PH_LOC:![0-9]+]] |
| ; EPILOG: for.body: |
| ; EPILOG: br i1 %niter.ncmp.1, label %for.end.loopexit.unr-lcssa.loopexit, label %for.body, !dbg [[PH_LOC]] |
| ; EPILOG-NOT: br i1 %niter.ncmp.2, label %for.end.loopexit{{.*}}, label %for.body |
| ; EPILOG: for.body.epil.preheader: |
| ; EPILOG: br label %for.body.epil, !dbg [[PH_LOC]] |
| ; EPILOG: for.body.epil: |
| ; EPILOG: br label %for.end.loopexit, !dbg [[EXIT_LOC:![0-9]+]] |
| ; EPILOG: for.end.loopexit: |
| ; EPILOG: br label %for.end, !dbg [[EXIT_LOC]] |
| |
| ; EPILOG-DAG: [[PH_LOC]] = !DILocation(line: 102, column: 1, scope: !{{.*}}) |
| ; EPILOG-DAG: [[EXIT_LOC]] = !DILocation(line: 103, column: 1, scope: !{{.*}}) |
| |
| ; PROLOG: for.body.preheader: |
| ; PROLOG: br {{.*}} label %for.body.prol.preheader, label %for.body.prol.loopexit, !dbg [[PH_LOC:![0-9]+]] |
| ; PROLOG: for.body.prol: |
| ; PROLOG: br label %for.body.prol.loopexit, !dbg [[PH_LOC:![0-9]+]] |
| ; PROLOG: for.body.prol.loopexit: |
| ; PROLOG: br {{.*}} label %for.end.loopexit, label %for.body.preheader.new, !dbg [[PH_LOC]] |
| ; PROLOG: for.body: |
| ; PROLOG: br i1 %exitcond.1, label %for.end.loopexit.unr-lcssa, label %for.body, !dbg [[PH_LOC]] |
| ; PROLOG-NOT: br i1 %exitcond.4, label %for.end.loopexit{{.*}}, label %for.body |
| |
| ; PROLOG-DAG: [[PH_LOC]] = !DILocation(line: 102, column: 1, scope: !{{.*}}) |
| |
| define i32 @test(ptr nocapture %a, i32 %n) nounwind uwtable readonly !dbg !6 { |
| entry: |
| %cmp1 = icmp eq i32 %n, 0, !dbg !7 |
| br i1 %cmp1, label %for.end, label %for.body, !dbg !7 |
| |
| for.body: ; preds = %for.body, %entry |
| %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ] |
| %sum.02 = phi i32 [ %add, %for.body ], [ 0, %entry ] |
| %arrayidx = getelementptr inbounds i32, ptr %a, i64 %indvars.iv, !dbg !8 |
| %0 = load i32, ptr %arrayidx, align 4, !dbg !8 |
| %add = add nsw i32 %0, %sum.02, !dbg !8 |
| %indvars.iv.next = add i64 %indvars.iv, 1, !dbg !9 |
| %lftr.wideiv = trunc i64 %indvars.iv.next to i32, !dbg !9 |
| %exitcond = icmp eq i32 %lftr.wideiv, %n, !dbg !9 |
| br i1 %exitcond, label %for.end, label %for.body, !dbg !9 |
| |
| for.end: ; preds = %for.body, %entry |
| %sum.0.lcssa = phi i32 [ 0, %entry ], [ %add, %for.body ] |
| ret i32 %sum.0.lcssa, !dbg !10 |
| } |
| |
| !llvm.module.flags = !{!0, !1, !2} |
| !llvm.dbg.cu = !{!11} |
| !0 = !{i32 2, !"Dwarf Version", i32 4} |
| !1 = !{i32 2, !"Debug Info Version", i32 3} |
| !2 = !{i32 1, !"PIC Level", i32 2} |
| |
| !3 = !{} |
| !4 = !DISubroutineType(types: !3) |
| !5 = !DIFile(filename: "test.cpp", directory: "/tmp") |
| !6 = distinct !DISubprogram(name: "test", scope: !5, file: !5, line: 99, type: !4, isLocal: false, isDefinition: true, scopeLine: 100, flags: DIFlagPrototyped, isOptimized: false, unit: !11, retainedNodes: !3) |
| !7 = !DILocation(line: 100, column: 1, scope: !6) |
| !8 = !DILocation(line: 101, column: 1, scope: !6) |
| !9 = !DILocation(line: 102, column: 1, scope: !6) |
| !10 = !DILocation(line: 103, column: 1, scope: !6) |
| !11 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang", |
| file: !5, |
| isOptimized: true, flags: "-O2", |
| splitDebugFilename: "abc.debug", emissionKind: 2) |