derek.holloway
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100 lines
3.5 KiB
LLVM
100 lines
3.5 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals
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; RUN: opt < %s -S -passes=loop-unroll -unroll-force-peel-count=2 2>&1 | FileCheck %s
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; RUN: opt < %s -S -passes=loop-unroll -unroll-force-peel-count=2 -disable-advanced-peeling 2>&1 | FileCheck %s --check-prefix=DISABLEADV
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declare i32 @get.x()
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; Test branch weight update for terminator with multiple fallthrough and
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; multiple exit edges.
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define void @test() {
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; CHECK-LABEL: @test(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[LOOP_PEEL_BEGIN:%.*]]
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; CHECK: loop.peel.begin:
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; CHECK-NEXT: br label [[LOOP_PEEL:%.*]]
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; CHECK: loop.peel:
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; CHECK-NEXT: [[X_PEEL:%.*]] = call i32 @get.x()
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; CHECK-NEXT: switch i32 [[X_PEEL]], label [[LOOP_LATCH_PEEL:%.*]] [
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; CHECK-NEXT: i32 0, label [[LOOP_LATCH_PEEL]]
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; CHECK-NEXT: i32 1, label [[LOOP_EXIT:%.*]]
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; CHECK-NEXT: i32 2, label [[LOOP_EXIT]]
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; CHECK-NEXT: ], !prof [[PROF0:![0-9]+]]
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; CHECK: loop.latch.peel:
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; CHECK-NEXT: br label [[LOOP_PEEL_NEXT:%.*]]
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; CHECK: loop.peel.next:
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; CHECK-NEXT: br label [[LOOP_PEEL2:%.*]]
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; CHECK: loop.peel2:
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; CHECK-NEXT: [[X_PEEL3:%.*]] = call i32 @get.x()
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; CHECK-NEXT: switch i32 [[X_PEEL3]], label [[LOOP_LATCH_PEEL4:%.*]] [
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; CHECK-NEXT: i32 0, label [[LOOP_LATCH_PEEL4]]
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; CHECK-NEXT: i32 1, label [[LOOP_EXIT]]
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; CHECK-NEXT: i32 2, label [[LOOP_EXIT]]
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; CHECK-NEXT: ], !prof [[PROF0]]
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; CHECK: loop.latch.peel4:
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; CHECK-NEXT: br label [[LOOP_PEEL_NEXT1:%.*]]
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; CHECK: loop.peel.next1:
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; CHECK-NEXT: br label [[LOOP_PEEL_NEXT5:%.*]]
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; CHECK: loop.peel.next5:
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; CHECK-NEXT: br label [[ENTRY_PEEL_NEWPH:%.*]]
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; CHECK: entry.peel.newph:
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; CHECK-NEXT: br label [[LOOP:%.*]]
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; CHECK: loop:
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; CHECK-NEXT: [[X:%.*]] = call i32 @get.x()
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; CHECK-NEXT: switch i32 [[X]], label [[LOOP_LATCH:%.*]] [
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; CHECK-NEXT: i32 0, label [[LOOP_LATCH]]
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; CHECK-NEXT: i32 1, label [[LOOP_EXIT_LOOPEXIT:%.*]]
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; CHECK-NEXT: i32 2, label [[LOOP_EXIT_LOOPEXIT]]
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; CHECK-NEXT: ], !prof [[PROF0]]
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; CHECK: loop.latch:
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; CHECK-NEXT: br label [[LOOP]], !llvm.loop [[LOOP1:![0-9]+]]
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; CHECK: loop.exit.loopexit:
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; CHECK-NEXT: br label [[LOOP_EXIT]]
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; CHECK: loop.exit:
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; CHECK-NEXT: ret void
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;
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; DISABLEADV-LABEL: @test(
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; DISABLEADV-NEXT: entry:
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; DISABLEADV-NEXT: br label [[LOOP:%.*]]
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; DISABLEADV: loop:
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; DISABLEADV-NEXT: [[X:%.*]] = call i32 @get.x()
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; DISABLEADV-NEXT: switch i32 [[X]], label [[LOOP_LATCH:%.*]] [
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; DISABLEADV-NEXT: i32 0, label [[LOOP_LATCH]]
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; DISABLEADV-NEXT: i32 1, label [[LOOP_EXIT:%.*]]
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; DISABLEADV-NEXT: i32 2, label [[LOOP_EXIT]]
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; DISABLEADV-NEXT: ], !prof [[PROF0:![0-9]+]]
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; DISABLEADV: loop.latch:
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; DISABLEADV-NEXT: br label [[LOOP]]
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; DISABLEADV: loop.exit:
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; DISABLEADV-NEXT: ret void
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;
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entry:
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br label %loop
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loop:
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%x = call i32 @get.x()
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switch i32 %x, label %loop.latch [
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i32 0, label %loop.latch
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i32 1, label %loop.exit
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i32 2, label %loop.exit
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], !prof !0
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loop.latch:
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br label %loop
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loop.exit:
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ret void
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}
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!0 = !{!"branch_weights", i32 100, i32 200, i32 20, i32 10}
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;.
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; CHECK: [[PROF0]] = !{!"branch_weights", i32 100, i32 200, i32 20, i32 10}
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; CHECK: [[LOOP1]] = distinct !{[[LOOP1]], [[META2:![0-9]+]], [[META3:![0-9]+]]}
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; CHECK: [[META2]] = !{!"llvm.loop.peeled.count", i32 2}
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; CHECK: [[META3]] = !{!"llvm.loop.unroll.disable"}
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;.
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; DISABLEADV: [[PROF0]] = !{!"branch_weights", i32 100, i32 200, i32 20, i32 10}
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;.
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