derek.holloway
7502bf64a4
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268 lines
10 KiB
LLVM
268 lines
10 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals
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; RUN: opt < %s -passes='require<profile-summary>,chr' -S | FileCheck %s
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declare void @foo()
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declare void @bar()
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declare void @baz(i64)
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; Test that when we have a static alloca in an entry block that will get split,
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; the alloca remains static and we preserve its lifetime annotations.
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define void @test_chr_with_lifetimes(ptr %i) !prof !14 {
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; CHECK-LABEL: @test_chr_with_lifetimes(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[TEST:%.*]] = alloca i32, align 8
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; CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr [[I:%.*]], align 4
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; CHECK-NEXT: [[TMP1:%.*]] = icmp ne i32 [[TMP0]], 0
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; CHECK-NEXT: [[TMP9:%.*]] = freeze i1 [[TMP1]]
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; CHECK-NEXT: [[TMP8:%.*]] = select i1 true, i1 [[TMP9]], i1 false, !prof [[PROF15:![0-9]+]]
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; CHECK-NEXT: [[TMP11:%.*]] = freeze i1 [[TMP1]]
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; CHECK-NEXT: [[TMP5:%.*]] = select i1 [[TMP8]], i1 [[TMP11]], i1 false, !prof [[PROF15]]
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; CHECK-NEXT: br i1 [[TMP5]], label [[ENTRY_SPLIT:%.*]], label [[ENTRY_SPLIT_NONCHR:%.*]], !prof [[PROF16:![0-9]+]]
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; CHECK: entry.split:
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; CHECK-NEXT: [[TMP6:%.*]] = select i1 true, i64 0, i64 4, !prof [[PROF17:![0-9]+]]
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; CHECK-NEXT: call void @baz(i64 [[TMP6]])
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; CHECK-NEXT: br i1 false, label [[BB1:%.*]], label [[BB0:%.*]], !prof [[PROF18:![0-9]+]]
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; CHECK: bb0:
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; CHECK-NEXT: call void @foo()
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; CHECK-NEXT: br label [[BB1]]
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; CHECK: entry.split.nonchr:
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; CHECK-NEXT: [[TMP7:%.*]] = select i1 [[TMP1]], i64 0, i64 4, !prof [[PROF17]]
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; CHECK-NEXT: call void @baz(i64 [[TMP7]])
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; CHECK-NEXT: br i1 [[TMP1]], label [[BB0_NONCHR:%.*]], label [[BB1]], !prof [[PROF17]]
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; CHECK: bb0.nonchr:
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; CHECK-NEXT: call void @foo()
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; CHECK-NEXT: br label [[BB1]]
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; CHECK: bb1:
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; CHECK-NEXT: call void @llvm.lifetime.start.p0(ptr [[TEST]])
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; CHECK-NEXT: store ptr [[TEST]], ptr [[I]], align 8
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; CHECK-NEXT: br label [[BB2:%.*]]
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; CHECK: bb2:
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; CHECK-NEXT: [[TMP2:%.*]] = phi ptr [ [[TMP3:%.*]], [[BB2]] ], [ null, [[BB1]] ]
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; CHECK-NEXT: [[TMP3]] = getelementptr i8, ptr [[TMP2]], i64 24
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; CHECK-NEXT: [[TMP4:%.*]] = icmp eq ptr [[TMP2]], [[I]]
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; CHECK-NEXT: br i1 [[TMP4]], label [[BB3:%.*]], label [[BB2]]
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; CHECK: bb3:
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; CHECK-NEXT: ret void
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;
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entry:
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%1 = load i32, ptr %i
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%2 = icmp eq i32 %1, 0
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%3 = select i1 %2, i64 4, i64 0, !prof !15
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%test = alloca i32, align 8
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call void @baz(i64 %3)
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br i1 %2, label %bb1, label %bb0, !prof !15
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bb0:
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call void @foo()
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br label %bb1
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bb1:
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call void @llvm.lifetime.start.p0(ptr %test)
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store ptr %test, ptr %i, align 8
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br label %bb2
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bb2:
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%4 = phi ptr [ %5, %bb2 ], [ null, %bb1 ]
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%5 = getelementptr i8, ptr %4, i64 24
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%6 = icmp eq ptr %4, %i
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br i1 %6, label %bb3, label %bb2
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bb3:
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ret void
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}
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; Test that we remove lifetime markers that would otherwise refer to phi
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; nodes given the dynamic allocas they referred to have been duplicated.
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define void @test_chr_dynamic_alloca(ptr %i) !prof !14 {
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; CHECK-LABEL: @test_chr_dynamic_alloca(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[TEST1:%.*]] = load i32, ptr [[I:%.*]], align 4
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; CHECK-NEXT: [[TEST2:%.*]] = icmp eq i32 [[TEST1]], 5
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; CHECK-NEXT: br i1 [[TEST2]], label [[BB4:%.*]], label [[BB3:%.*]]
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; CHECK: bb4:
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; CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr [[I]], align 4
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; CHECK-NEXT: [[TMP1:%.*]] = icmp ne i32 [[TMP0]], 0
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; CHECK-NEXT: [[TMP2:%.*]] = freeze i1 [[TMP1]]
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; CHECK-NEXT: [[TMP3:%.*]] = select i1 true, i1 [[TMP2]], i1 false, !prof [[PROF15]]
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; CHECK-NEXT: [[TMP4:%.*]] = freeze i1 [[TMP1]]
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; CHECK-NEXT: [[TMP5:%.*]] = select i1 [[TMP3]], i1 [[TMP4]], i1 false, !prof [[PROF15]]
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; CHECK-NEXT: br i1 [[TMP5]], label [[BB4_SPLIT:%.*]], label [[BB4_SPLIT_NONCHR:%.*]], !prof [[PROF16]]
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; CHECK: bb4.split:
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; CHECK-NEXT: [[TMP6:%.*]] = select i1 true, i64 0, i64 4, !prof [[PROF17]]
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; CHECK-NEXT: [[TEST:%.*]] = alloca i32, align 8
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; CHECK-NEXT: call void @baz(i64 [[TMP6]])
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; CHECK-NEXT: br i1 false, label [[BB1:%.*]], label [[BB0:%.*]], !prof [[PROF18]]
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; CHECK: bb0:
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; CHECK-NEXT: call void @foo()
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; CHECK-NEXT: store ptr [[TEST]], ptr [[I]], align 8
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; CHECK-NEXT: br label [[BB1]]
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; CHECK: bb4.split.nonchr:
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; CHECK-NEXT: [[TMP7:%.*]] = select i1 [[TMP1]], i64 0, i64 4, !prof [[PROF17]]
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; CHECK-NEXT: [[TEST_NONCHR:%.*]] = alloca i32, align 8
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; CHECK-NEXT: call void @baz(i64 [[TMP7]])
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; CHECK-NEXT: br i1 [[TMP1]], label [[BB0_NONCHR:%.*]], label [[BB1]], !prof [[PROF17]]
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; CHECK: bb0.nonchr:
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; CHECK-NEXT: call void @foo()
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; CHECK-NEXT: store ptr [[TEST_NONCHR]], ptr [[I]], align 8
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; CHECK-NEXT: br label [[BB1]]
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; CHECK: bb1:
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; CHECK-NEXT: [[TMP8:%.*]] = phi ptr [ [[TEST]], [[BB0]] ], [ [[TEST]], [[BB4_SPLIT]] ], [ [[TEST_NONCHR]], [[BB0_NONCHR]] ], [ [[TEST_NONCHR]], [[BB4_SPLIT_NONCHR]] ]
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; CHECK-NEXT: call void @bar()
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; CHECK-NEXT: store ptr [[TMP8]], ptr [[I]], align 8
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; CHECK-NEXT: br label [[BB2:%.*]]
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; CHECK: bb2:
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; CHECK-NEXT: [[TMP9:%.*]] = phi ptr [ [[TMP10:%.*]], [[BB2]] ], [ null, [[BB1]] ]
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; CHECK-NEXT: [[TMP10]] = getelementptr i8, ptr [[TMP9]], i64 24
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; CHECK-NEXT: [[TEST5:%.*]] = load ptr, ptr [[TMP8]], align 8
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; CHECK-NEXT: [[TMP11:%.*]] = icmp eq ptr [[TMP9]], [[TEST5]]
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; CHECK-NEXT: br i1 [[TMP11]], label [[BB3]], label [[BB2]]
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; CHECK: bb3:
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; CHECK-NEXT: ret void
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;
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entry:
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%test1 = load i32, ptr %i
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%test2 = icmp eq i32 %test1, 5
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br i1 %test2, label %bb4, label %bb3
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bb4:
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%1 = load i32, ptr %i
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%2 = icmp eq i32 %1, 0
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%3 = select i1 %2, i64 4, i64 0, !prof !15
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%test = alloca i32, align 8
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call void @baz(i64 %3)
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br i1 %2, label %bb1, label %bb0, !prof !15
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bb0:
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call void @foo()
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call void @llvm.lifetime.start.p0(ptr %test)
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store ptr %test, ptr %i, align 8
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br label %bb1
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bb1:
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call void @bar()
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call void @llvm.lifetime.start.p0(ptr %test)
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store ptr %test, ptr %i, align 8
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br label %bb2
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bb2:
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%4 = phi ptr [ %5, %bb2 ], [ null, %bb1 ]
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%5 = getelementptr i8, ptr %4, i64 24
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%test5 = load ptr, ptr %test
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call void @llvm.lifetime.end.p0(ptr %test)
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%6 = icmp eq ptr %4, %test5
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br i1 %6, label %bb3, label %bb2
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bb3:
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ret void
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}
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; Test that we do not move around allocas that occur in the entry block
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; before splitting. If we accidentally sink them, we can move them after
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; their users.
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define void @test_no_move_allocas(ptr %i) !prof !14 {
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; CHECK-LABEL: @test_no_move_allocas(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[TEST:%.*]] = alloca i32, align 8
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; CHECK-NEXT: call void @llvm.lifetime.start.p0(ptr [[TEST]])
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; CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr [[I:%.*]], align 4
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; CHECK-NEXT: [[TMP1:%.*]] = icmp ne i32 [[TMP0]], 0
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; CHECK-NEXT: [[TMP2:%.*]] = freeze i1 [[TMP1]]
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; CHECK-NEXT: [[TMP3:%.*]] = select i1 true, i1 [[TMP2]], i1 false, !prof [[PROF15]]
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; CHECK-NEXT: [[TMP4:%.*]] = freeze i1 [[TMP1]]
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; CHECK-NEXT: [[TMP5:%.*]] = select i1 [[TMP3]], i1 [[TMP4]], i1 false, !prof [[PROF15]]
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; CHECK-NEXT: br i1 [[TMP5]], label [[ENTRY_SPLIT:%.*]], label [[ENTRY_SPLIT_NONCHR:%.*]], !prof [[PROF16]]
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; CHECK: entry.split:
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; CHECK-NEXT: [[TMP6:%.*]] = select i1 true, i64 0, i64 4, !prof [[PROF17]]
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; CHECK-NEXT: call void @baz(i64 [[TMP6]])
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; CHECK-NEXT: br i1 false, label [[BB1:%.*]], label [[BB0:%.*]], !prof [[PROF18]]
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; CHECK: bb0:
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; CHECK-NEXT: call void @foo()
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; CHECK-NEXT: br label [[BB1]]
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; CHECK: entry.split.nonchr:
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; CHECK-NEXT: [[TMP7:%.*]] = select i1 [[TMP1]], i64 0, i64 4, !prof [[PROF17]]
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; CHECK-NEXT: call void @baz(i64 [[TMP7]])
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; CHECK-NEXT: br i1 [[TMP1]], label [[BB0_NONCHR:%.*]], label [[BB1]], !prof [[PROF17]]
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; CHECK: bb0.nonchr:
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; CHECK-NEXT: call void @foo()
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; CHECK-NEXT: br label [[BB1]]
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; CHECK: bb1:
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; CHECK-NEXT: call void @bar()
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; CHECK-NEXT: br label [[BB2:%.*]]
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; CHECK: bb2:
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; CHECK-NEXT: [[TMP8:%.*]] = phi ptr [ [[TMP9:%.*]], [[BB2]] ], [ null, [[BB1]] ]
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; CHECK-NEXT: [[TMP9]] = getelementptr i8, ptr [[TMP8]], i64 24
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; CHECK-NEXT: [[TMP10:%.*]] = icmp eq ptr [[TMP8]], [[I]]
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; CHECK-NEXT: br i1 [[TMP10]], label [[BB3:%.*]], label [[BB2]]
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; CHECK: bb3:
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; CHECK-NEXT: ret void
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;
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entry:
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%test = alloca i32, align 8
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call void @llvm.lifetime.start.p0(ptr %test)
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%1 = load i32, ptr %i
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%2 = icmp eq i32 %1, 0
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%3 = select i1 %2, i64 4, i64 0, !prof !15
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call void @baz(i64 %3)
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br i1 %2, label %bb1, label %bb0, !prof !15
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bb0:
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call void @foo()
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br label %bb1
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bb1:
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call void @bar()
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br label %bb2
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bb2:
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%4 = phi ptr [ %5, %bb2 ], [ null, %bb1 ]
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%5 = getelementptr i8, ptr %4, i64 24
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%6 = icmp eq ptr %4, %i
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br i1 %6, label %bb3, label %bb2
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bb3:
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ret void
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}
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!llvm.module.flags = !{!0}
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!0 = !{i32 1, !"ProfileSummary", !1}
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!1 = !{!2, !3, !4, !5, !6, !7, !8, !9}
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!2 = !{!"ProfileFormat", !"InstrProf"}
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!3 = !{!"TotalCount", i64 10000}
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!4 = !{!"MaxCount", i64 10}
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!5 = !{!"MaxInternalCount", i64 1}
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!6 = !{!"MaxFunctionCount", i64 1000}
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!7 = !{!"NumCounts", i64 3}
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!8 = !{!"NumFunctions", i64 3}
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!9 = !{!"DetailedSummary", !10}
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!10 = !{!11, !12, !13}
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!11 = !{i32 10000, i64 100, i32 1}
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!12 = !{i32 999000, i64 100, i32 1}
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!13 = !{i32 999999, i64 1, i32 2}
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!14 = !{!"function_entry_count", i64 100}
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!15 = !{!"branch_weights", i32 0, i32 1}
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;.
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; CHECK: attributes #[[ATTR0:[0-9]+]] = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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;.
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; CHECK: [[META0:![0-9]+]] = !{i32 1, !"ProfileSummary", [[META1:![0-9]+]]}
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; 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]+]]}
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; CHECK: [[META2]] = !{!"ProfileFormat", !"InstrProf"}
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; CHECK: [[META3]] = !{!"TotalCount", i64 10000}
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; CHECK: [[META4]] = !{!"MaxCount", i64 10}
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; CHECK: [[META5]] = !{!"MaxInternalCount", i64 1}
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; CHECK: [[META6]] = !{!"MaxFunctionCount", i64 1000}
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; CHECK: [[META7]] = !{!"NumCounts", i64 3}
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; CHECK: [[META8]] = !{!"NumFunctions", i64 3}
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; CHECK: [[META9]] = !{!"DetailedSummary", [[META10:![0-9]+]]}
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; CHECK: [[META10]] = !{[[META11:![0-9]+]], [[META12:![0-9]+]], [[META13:![0-9]+]]}
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; CHECK: [[META11]] = !{i32 10000, i64 100, i32 1}
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; CHECK: [[META12]] = !{i32 999000, i64 100, i32 1}
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; CHECK: [[META13]] = !{i32 999999, i64 1, i32 2}
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; CHECK: [[META14:![0-9]+]] = !{!"function_entry_count", i64 100}
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; CHECK: [[PROF15]] = !{!"unknown", !"chr"}
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; CHECK: [[PROF16]] = !{!"branch_weights", i32 1000, i32 0}
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; CHECK: [[PROF17]] = !{!"branch_weights", i32 1, i32 0}
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; CHECK: [[PROF18]] = !{!"branch_weights", i32 0, i32 1}
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;.
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