test/Transforms/PGOProfile/chr-lifetimes.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals
; RUN: opt < %s -passes='require<profile-summary>,chr' -S | FileCheck %s

declare void @foo()
declare void @bar()
declare void @baz(i64)

; Test that when we have a static alloca in an entry block that will get split,
; the alloca remains static and we preserve its lifetime annotations.
define void @test_chr_with_lifetimes(ptr %i) !prof !14 {
; CHECK-LABEL: @test_chr_with_lifetimes(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[TEST:%.*]] = alloca i32, align 8
; CHECK-NEXT:    [[TMP0:%.*]] = load i32, ptr [[I:%.*]], align 4
; CHECK-NEXT:    [[TMP1:%.*]] = icmp ne i32 [[TMP0]], 0
; CHECK-NEXT:    [[TMP9:%.*]] = freeze i1 [[TMP1]]
; CHECK-NEXT:    [[TMP8:%.*]] = select i1 true, i1 [[TMP9]], i1 false, !prof [[PROF15:![0-9]+]]
; CHECK-NEXT:    [[TMP11:%.*]] = freeze i1 [[TMP1]]
; CHECK-NEXT:    [[TMP5:%.*]] = select i1 [[TMP8]], i1 [[TMP11]], i1 false, !prof [[PROF15]]
; CHECK-NEXT:    br i1 [[TMP5]], label [[ENTRY_SPLIT:%.*]], label [[ENTRY_SPLIT_NONCHR:%.*]], !prof [[PROF16:![0-9]+]]
; CHECK:       entry.split:
; CHECK-NEXT:    [[TMP6:%.*]] = select i1 true, i64 0, i64 4, !prof [[PROF17:![0-9]+]]
; CHECK-NEXT:    call void @baz(i64 [[TMP6]])
; CHECK-NEXT:    br i1 false, label [[BB1:%.*]], label [[BB0:%.*]], !prof [[PROF18:![0-9]+]]
; CHECK:       bb0:
; CHECK-NEXT:    call void @foo()
; CHECK-NEXT:    br label [[BB1]]
; CHECK:       entry.split.nonchr:
; CHECK-NEXT:    [[TMP7:%.*]] = select i1 [[TMP1]], i64 0, i64 4, !prof [[PROF17]]
; CHECK-NEXT:    call void @baz(i64 [[TMP7]])
; CHECK-NEXT:    br i1 [[TMP1]], label [[BB0_NONCHR:%.*]], label [[BB1]], !prof [[PROF17]]
; CHECK:       bb0.nonchr:
; CHECK-NEXT:    call void @foo()
; CHECK-NEXT:    br label [[BB1]]
; CHECK:       bb1:
; CHECK-NEXT:    call void @llvm.lifetime.start.p0(ptr [[TEST]])
; CHECK-NEXT:    store ptr [[TEST]], ptr [[I]], align 8
; CHECK-NEXT:    br label [[BB2:%.*]]
; CHECK:       bb2:
; CHECK-NEXT:    [[TMP2:%.*]] = phi ptr [ [[TMP3:%.*]], [[BB2]] ], [ null, [[BB1]] ]
; CHECK-NEXT:    [[TMP3]] = getelementptr i8, ptr [[TMP2]], i64 24
; CHECK-NEXT:    [[TMP4:%.*]] = icmp eq ptr [[TMP2]], [[I]]
; CHECK-NEXT:    br i1 [[TMP4]], label [[BB3:%.*]], label [[BB2]]
; CHECK:       bb3:
; CHECK-NEXT:    ret void
;
entry:
  %1 = load i32, ptr %i
  %2 = icmp eq i32 %1, 0
  %3 = select i1 %2, i64 4, i64 0, !prof !15
  %test = alloca i32, align 8
  call void @baz(i64 %3)
  br i1 %2, label %bb1, label %bb0, !prof !15

bb0:
  call void @foo()
  br label %bb1

bb1:
  call void @llvm.lifetime.start.p0(ptr %test)
  store ptr %test, ptr %i, align 8
  br label %bb2

bb2:
  %4 = phi ptr [ %5, %bb2 ], [ null, %bb1 ]
  %5 = getelementptr i8, ptr %4, i64 24
  %6 = icmp eq ptr %4, %i
  br i1 %6, label %bb3, label %bb2

bb3:
  ret void
}

; Test that we remove lifetime markers that would otherwise refer to phi
; nodes given the dynamic allocas they referred to have been duplicated.
define void @test_chr_dynamic_alloca(ptr %i) !prof !14 {
; CHECK-LABEL: @test_chr_dynamic_alloca(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[TEST1:%.*]] = load i32, ptr [[I:%.*]], align 4
; CHECK-NEXT:    [[TEST2:%.*]] = icmp eq i32 [[TEST1]], 5
; CHECK-NEXT:    br i1 [[TEST2]], label [[BB4:%.*]], label [[BB3:%.*]]
; CHECK:       bb4:
; CHECK-NEXT:    [[TMP0:%.*]] = load i32, ptr [[I]], align 4
; CHECK-NEXT:    [[TMP1:%.*]] = icmp ne i32 [[TMP0]], 0
; CHECK-NEXT:    [[TMP2:%.*]] = freeze i1 [[TMP1]]
; CHECK-NEXT:    [[TMP3:%.*]] = select i1 true, i1 [[TMP2]], i1 false, !prof [[PROF15]]
; CHECK-NEXT:    [[TMP4:%.*]] = freeze i1 [[TMP1]]
; CHECK-NEXT:    [[TMP5:%.*]] = select i1 [[TMP3]], i1 [[TMP4]], i1 false, !prof [[PROF15]]
; CHECK-NEXT:    br i1 [[TMP5]], label [[BB4_SPLIT:%.*]], label [[BB4_SPLIT_NONCHR:%.*]], !prof [[PROF16]]
; CHECK:       bb4.split:
; CHECK-NEXT:    [[TMP6:%.*]] = select i1 true, i64 0, i64 4, !prof [[PROF17]]
; CHECK-NEXT:    [[TEST:%.*]] = alloca i32, align 8
; CHECK-NEXT:    call void @baz(i64 [[TMP6]])
; CHECK-NEXT:    br i1 false, label [[BB1:%.*]], label [[BB0:%.*]], !prof [[PROF18]]
; CHECK:       bb0:
; CHECK-NEXT:    call void @foo()
; CHECK-NEXT:    store ptr [[TEST]], ptr [[I]], align 8
; CHECK-NEXT:    br label [[BB1]]
; CHECK:       bb4.split.nonchr:
; CHECK-NEXT:    [[TMP7:%.*]] = select i1 [[TMP1]], i64 0, i64 4, !prof [[PROF17]]
; CHECK-NEXT:    [[TEST_NONCHR:%.*]] = alloca i32, align 8
; CHECK-NEXT:    call void @baz(i64 [[TMP7]])
; CHECK-NEXT:    br i1 [[TMP1]], label [[BB0_NONCHR:%.*]], label [[BB1]], !prof [[PROF17]]
; CHECK:       bb0.nonchr:
; CHECK-NEXT:    call void @foo()
; CHECK-NEXT:    store ptr [[TEST_NONCHR]], ptr [[I]], align 8
; CHECK-NEXT:    br label [[BB1]]
; CHECK:       bb1:
; CHECK-NEXT:    [[TMP8:%.*]] = phi ptr [ [[TEST]], [[BB0]] ], [ [[TEST]], [[BB4_SPLIT]] ], [ [[TEST_NONCHR]], [[BB0_NONCHR]] ], [ [[TEST_NONCHR]], [[BB4_SPLIT_NONCHR]] ]
; CHECK-NEXT:    call void @bar()
; CHECK-NEXT:    store ptr [[TMP8]], ptr [[I]], align 8
; CHECK-NEXT:    br label [[BB2:%.*]]
; CHECK:       bb2:
; CHECK-NEXT:    [[TMP9:%.*]] = phi ptr [ [[TMP10:%.*]], [[BB2]] ], [ null, [[BB1]] ]
; CHECK-NEXT:    [[TMP10]] = getelementptr i8, ptr [[TMP9]], i64 24
; CHECK-NEXT:    [[TEST5:%.*]] = load ptr, ptr [[TMP8]], align 8
; CHECK-NEXT:    [[TMP11:%.*]] = icmp eq ptr [[TMP9]], [[TEST5]]
; CHECK-NEXT:    br i1 [[TMP11]], label [[BB3]], label [[BB2]]
; CHECK:       bb3:
; CHECK-NEXT:    ret void
;
entry:
  %test1 = load i32, ptr %i
  %test2 = icmp eq i32 %test1, 5
  br i1 %test2, label %bb4, label %bb3

bb4:
  %1 = load i32, ptr %i
  %2 = icmp eq i32 %1, 0
  %3 = select i1 %2, i64 4, i64 0, !prof !15
  %test = alloca i32, align 8
  call void @baz(i64 %3)
  br i1 %2, label %bb1, label %bb0, !prof !15

bb0:
  call void @foo()
  call void @llvm.lifetime.start.p0(ptr %test)
  store ptr %test, ptr %i, align 8
  br label %bb1

bb1:
  call void @bar()
  call void @llvm.lifetime.start.p0(ptr %test)
  store ptr %test, ptr %i, align 8
  br label %bb2

bb2:
  %4 = phi ptr [ %5, %bb2 ], [ null, %bb1 ]
  %5 = getelementptr i8, ptr %4, i64 24
  %test5 = load ptr, ptr %test
  call void @llvm.lifetime.end.p0(ptr %test)
  %6 = icmp eq ptr %4, %test5
  br i1 %6, label %bb3, label %bb2

bb3:
  ret void
}

; Test that we do not move around allocas that occur in the entry block
; before splitting. If we accidentally sink them, we can move them after
; their users.
define void @test_no_move_allocas(ptr %i) !prof !14 {
; CHECK-LABEL: @test_no_move_allocas(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[TEST:%.*]] = alloca i32, align 8
; CHECK-NEXT:    call void @llvm.lifetime.start.p0(ptr [[TEST]])
; CHECK-NEXT:    [[TMP0:%.*]] = load i32, ptr [[I:%.*]], align 4
; CHECK-NEXT:    [[TMP1:%.*]] = icmp ne i32 [[TMP0]], 0
; CHECK-NEXT:    [[TMP2:%.*]] = freeze i1 [[TMP1]]
; CHECK-NEXT:    [[TMP3:%.*]] = select i1 true, i1 [[TMP2]], i1 false, !prof [[PROF15]]
; CHECK-NEXT:    [[TMP4:%.*]] = freeze i1 [[TMP1]]
; CHECK-NEXT:    [[TMP5:%.*]] = select i1 [[TMP3]], i1 [[TMP4]], i1 false, !prof [[PROF15]]
; CHECK-NEXT:    br i1 [[TMP5]], label [[ENTRY_SPLIT:%.*]], label [[ENTRY_SPLIT_NONCHR:%.*]], !prof [[PROF16]]
; CHECK:       entry.split:
; CHECK-NEXT:    [[TMP6:%.*]] = select i1 true, i64 0, i64 4, !prof [[PROF17]]
; CHECK-NEXT:    call void @baz(i64 [[TMP6]])
; CHECK-NEXT:    br i1 false, label [[BB1:%.*]], label [[BB0:%.*]], !prof [[PROF18]]
; CHECK:       bb0:
; CHECK-NEXT:    call void @foo()
; CHECK-NEXT:    br label [[BB1]]
; CHECK:       entry.split.nonchr:
; CHECK-NEXT:    [[TMP7:%.*]] = select i1 [[TMP1]], i64 0, i64 4, !prof [[PROF17]]
; CHECK-NEXT:    call void @baz(i64 [[TMP7]])
; CHECK-NEXT:    br i1 [[TMP1]], label [[BB0_NONCHR:%.*]], label [[BB1]], !prof [[PROF17]]
; CHECK:       bb0.nonchr:
; CHECK-NEXT:    call void @foo()
; CHECK-NEXT:    br label [[BB1]]
; CHECK:       bb1:
; CHECK-NEXT:    call void @bar()
; CHECK-NEXT:    br label [[BB2:%.*]]
; CHECK:       bb2:
; CHECK-NEXT:    [[TMP8:%.*]] = phi ptr [ [[TMP9:%.*]], [[BB2]] ], [ null, [[BB1]] ]
; CHECK-NEXT:    [[TMP9]] = getelementptr i8, ptr [[TMP8]], i64 24
; CHECK-NEXT:    [[TMP10:%.*]] = icmp eq ptr [[TMP8]], [[I]]
; CHECK-NEXT:    br i1 [[TMP10]], label [[BB3:%.*]], label [[BB2]]
; CHECK:       bb3:
; CHECK-NEXT:    ret void
;
entry:
  %test = alloca i32, align 8
  call void @llvm.lifetime.start.p0(ptr %test)
  %1 = load i32, ptr %i
  %2 = icmp eq i32 %1, 0
  %3 = select i1 %2, i64 4, i64 0, !prof !15
  call void @baz(i64 %3)
  br i1 %2, label %bb1, label %bb0, !prof !15

bb0:
  call void @foo()
  br label %bb1

bb1:
  call void @bar()
  br label %bb2

bb2:
  %4 = phi ptr [ %5, %bb2 ], [ null, %bb1 ]
  %5 = getelementptr i8, ptr %4, i64 24
  %6 = icmp eq ptr %4, %i
  br i1 %6, label %bb3, label %bb2

bb3:
  ret void
}


!llvm.module.flags = !{!0}
!0 = !{i32 1, !"ProfileSummary", !1}
!1 = !{!2, !3, !4, !5, !6, !7, !8, !9}
!2 = !{!"ProfileFormat", !"InstrProf"}
!3 = !{!"TotalCount", i64 10000}
!4 = !{!"MaxCount", i64 10}
!5 = !{!"MaxInternalCount", i64 1}
!6 = !{!"MaxFunctionCount", i64 1000}
!7 = !{!"NumCounts", i64 3}
!8 = !{!"NumFunctions", i64 3}
!9 = !{!"DetailedSummary", !10}
!10 = !{!11, !12, !13}
!11 = !{i32 10000, i64 100, i32 1}
!12 = !{i32 999000, i64 100, i32 1}
!13 = !{i32 999999, i64 1, i32 2}

!14 = !{!"function_entry_count", i64 100}
!15 = !{!"branch_weights", i32 0, i32 1}
;.
; CHECK: attributes #[[ATTR0:[0-9]+]] = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
;.
; CHECK: [[META0:![0-9]+]] = !{i32 1, !"ProfileSummary", [[META1:![0-9]+]]}
; CHECK: [[META1]] = !{[[META2:![0-9]+]], [[META3:![0-9]+]], [[META4:![0-9]+]], [[META5:![0-9]+]], [[META6:![0-9]+]], [[META7:![0-9]+]], [[META8:![0-9]+]], [[META9:![0-9]+]]}
; CHECK: [[META2]] = !{!"ProfileFormat", !"InstrProf"}
; CHECK: [[META3]] = !{!"TotalCount", i64 10000}
; CHECK: [[META4]] = !{!"MaxCount", i64 10}
; CHECK: [[META5]] = !{!"MaxInternalCount", i64 1}
; CHECK: [[META6]] = !{!"MaxFunctionCount", i64 1000}
; CHECK: [[META7]] = !{!"NumCounts", i64 3}
; CHECK: [[META8]] = !{!"NumFunctions", i64 3}
; CHECK: [[META9]] = !{!"DetailedSummary", [[META10:![0-9]+]]}
; CHECK: [[META10]] = !{[[META11:![0-9]+]], [[META12:![0-9]+]], [[META13:![0-9]+]]}
; CHECK: [[META11]] = !{i32 10000, i64 100, i32 1}
; CHECK: [[META12]] = !{i32 999000, i64 100, i32 1}
; CHECK: [[META13]] = !{i32 999999, i64 1, i32 2}
; CHECK: [[META14:![0-9]+]] = !{!"function_entry_count", i64 100}
; CHECK: [[PROF15]] = !{!"unknown", !"chr"}
; CHECK: [[PROF16]] = !{!"branch_weights", i32 1000, i32 0}
; CHECK: [[PROF17]] = !{!"branch_weights", i32 1, i32 0}
; CHECK: [[PROF18]] = !{!"branch_weights", i32 0, i32 1}
;.