forked from OSchip/llvm-project
91 lines
3.2 KiB
LLVM
91 lines
3.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -passes='require<profile-summary>,function(loop-mssa(simple-loop-unswitch<nontrivial>))' -S | FileCheck %s
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declare i32 @a()
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declare i32 @b()
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; Check loops will be applied non-trivial loop unswitch in a non-cold function,
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; even loop headers are cold
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define void @f1(i32 %i, i1 %cond, i1 %hot_cond, i1 %cold_cond, i1* %ptr) !prof !14 {
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; CHECK-LABEL: @f1(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[ENTRY_COLD_LOOP:%.*]]
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; CHECK: entry_cold_loop:
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; CHECK-NEXT: br i1 [[COLD_COND:%.*]], label [[COLD_LOOP_BEGIN_PREHEADER:%.*]], label [[COLD_LOOP_EXIT:%.*]], !prof [[PROF15:![0-9]+]]
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; CHECK: cold_loop_begin.preheader:
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; CHECK-NEXT: br i1 [[COND:%.*]], label [[COLD_LOOP_BEGIN_PREHEADER_SPLIT_US:%.*]], label [[COLD_LOOP_BEGIN_PREHEADER_SPLIT:%.*]]
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; CHECK: cold_loop_begin.preheader.split.us:
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; CHECK-NEXT: br label [[COLD_LOOP_BEGIN_US:%.*]]
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; CHECK: cold_loop_begin.us:
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; CHECK-NEXT: br label [[COLD_LOOP_A_US:%.*]]
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; CHECK: cold_loop_a.us:
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; CHECK-NEXT: [[TMP0:%.*]] = call i32 @a()
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; CHECK-NEXT: br label [[COLD_LOOP_LATCH_US:%.*]]
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; CHECK: cold_loop_latch.us:
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; CHECK-NEXT: [[V2_US:%.*]] = load i1, i1* [[PTR:%.*]], align 1
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; CHECK-NEXT: br i1 [[V2_US]], label [[COLD_LOOP_BEGIN_US]], label [[COLD_LOOP_EXIT_LOOPEXIT_SPLIT_US:%.*]]
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; CHECK: cold_loop_exit.loopexit.split.us:
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; CHECK-NEXT: br label [[COLD_LOOP_EXIT_LOOPEXIT:%.*]]
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; CHECK: cold_loop_begin.preheader.split:
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; CHECK-NEXT: br label [[COLD_LOOP_BEGIN:%.*]]
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; CHECK: cold_loop_begin:
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; CHECK-NEXT: br label [[COLD_LOOP_B:%.*]]
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; CHECK: cold_loop_b:
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; CHECK-NEXT: [[TMP1:%.*]] = call i32 @b()
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; CHECK-NEXT: br label [[COLD_LOOP_LATCH:%.*]]
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; CHECK: cold_loop_latch:
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; CHECK-NEXT: [[V2:%.*]] = load i1, i1* [[PTR]], align 1
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; CHECK-NEXT: br i1 [[V2]], label [[COLD_LOOP_BEGIN]], label [[COLD_LOOP_EXIT_LOOPEXIT_SPLIT:%.*]]
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; CHECK: cold_loop_exit.loopexit.split:
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; CHECK-NEXT: br label [[COLD_LOOP_EXIT_LOOPEXIT]]
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; CHECK: cold_loop_exit.loopexit:
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; CHECK-NEXT: br label [[COLD_LOOP_EXIT]]
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; CHECK: cold_loop_exit:
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; CHECK-NEXT: ret void
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;
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entry:
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br label %entry_cold_loop
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entry_cold_loop:
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br i1 %cold_cond, label %cold_loop_begin, label %cold_loop_exit, !prof !15
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cold_loop_begin:
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br i1 %cond, label %cold_loop_a, label %cold_loop_b
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cold_loop_a:
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%0 = call i32 @a()
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br label %cold_loop_latch
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cold_loop_b:
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%1 = call i32 @b()
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br label %cold_loop_latch
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cold_loop_latch:
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%v2 = load i1, i1* %ptr
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br i1 %v2, label %cold_loop_begin, label %cold_loop_exit
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cold_loop_exit:
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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 400}
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!15 = !{!"branch_weights", i32 0, i32 100}
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