forked from OSchip/llvm-project
625 lines
23 KiB
LLVM
625 lines
23 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -loop-unroll -S %s | FileCheck %s
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declare void @foo()
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define i32 @peel_readonly_to_make_loads_derefenceable(i32* %ptr, i32 %N, i32* %inv, i1 %c.1) {
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; CHECK-LABEL: @peel_readonly_to_make_loads_derefenceable(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[LOOP_HEADER_PEEL_BEGIN:%.*]]
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; CHECK: loop.header.peel.begin:
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; CHECK-NEXT: br label [[LOOP_HEADER_PEEL:%.*]]
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; CHECK: loop.header.peel:
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; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN_PEEL:%.*]], label [[UNREACHABLE_EXIT:%.*]]
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; CHECK: then.peel:
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; CHECK-NEXT: [[I_PEEL:%.*]] = load i32, i32* [[INV:%.*]], align 4
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; CHECK-NEXT: [[C_2_PEEL:%.*]] = icmp ult i32 [[I_PEEL]], 2
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; CHECK-NEXT: br i1 [[C_2_PEEL]], label [[LOOP_LATCH_PEEL:%.*]], label [[UNREACHABLE_EXIT]]
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; CHECK: loop.latch.peel:
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; CHECK-NEXT: [[GEP_PEEL:%.*]] = getelementptr i32, i32* [[PTR:%.*]], i32 1
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; CHECK-NEXT: [[LV_PEEL:%.*]] = load i32, i32* [[GEP_PEEL]], align 4
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; CHECK-NEXT: [[SUM_NEXT_PEEL:%.*]] = add i32 0, [[LV_PEEL]]
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; CHECK-NEXT: [[IV_NEXT_PEEL:%.*]] = add nuw nsw i32 1, 1
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; CHECK-NEXT: [[C_3_PEEL:%.*]] = icmp ult i32 1, 1000
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; CHECK-NEXT: br i1 [[C_3_PEEL]], label [[LOOP_HEADER_PEEL_NEXT:%.*]], label [[EXIT:%.*]]
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; CHECK: loop.header.peel.next:
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; CHECK-NEXT: br label [[LOOP_HEADER_PEEL_NEXT1:%.*]]
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; CHECK: loop.header.peel.next1:
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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_HEADER:%.*]]
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; CHECK: loop.header:
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; CHECK-NEXT: [[IV:%.*]] = phi i32 [ [[IV_NEXT_PEEL]], [[ENTRY_PEEL_NEWPH]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
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; CHECK-NEXT: [[SUM:%.*]] = phi i32 [ [[SUM_NEXT_PEEL]], [[ENTRY_PEEL_NEWPH]] ], [ [[SUM_NEXT:%.*]], [[LOOP_LATCH]] ]
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; CHECK-NEXT: br i1 [[C_1]], label [[THEN:%.*]], label [[UNREACHABLE_EXIT_LOOPEXIT:%.*]]
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; CHECK: then:
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; CHECK-NEXT: [[I:%.*]] = load i32, i32* [[INV]], align 4
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; CHECK-NEXT: [[C_2:%.*]] = icmp ult i32 [[I]], 2
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; CHECK-NEXT: br i1 [[C_2]], label [[LOOP_LATCH]], label [[UNREACHABLE_EXIT_LOOPEXIT]]
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; CHECK: loop.latch:
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; CHECK-NEXT: [[GEP:%.*]] = getelementptr i32, i32* [[PTR]], i32 [[IV]]
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; CHECK-NEXT: [[LV:%.*]] = load i32, i32* [[GEP]], align 4
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; CHECK-NEXT: [[SUM_NEXT]] = add i32 [[SUM]], [[LV]]
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; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i32 [[IV]], 1
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; CHECK-NEXT: [[C_3:%.*]] = icmp ult i32 [[IV]], 1000
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; CHECK-NEXT: br i1 [[C_3]], label [[LOOP_HEADER]], label [[EXIT_LOOPEXIT:%.*]], !llvm.loop [[LOOP0:![0-9]+]]
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; CHECK: exit.loopexit:
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; CHECK-NEXT: [[SUM_NEXT_LCSSA_PH:%.*]] = phi i32 [ [[SUM_NEXT]], [[LOOP_LATCH]] ]
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; CHECK-NEXT: br label [[EXIT]]
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; CHECK: exit:
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; CHECK-NEXT: [[SUM_NEXT_LCSSA:%.*]] = phi i32 [ [[SUM_NEXT_PEEL]], [[LOOP_LATCH_PEEL]] ], [ [[SUM_NEXT_LCSSA_PH]], [[EXIT_LOOPEXIT]] ]
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; CHECK-NEXT: ret i32 [[SUM_NEXT_LCSSA]]
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; CHECK: unreachable.exit.loopexit:
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; CHECK-NEXT: br label [[UNREACHABLE_EXIT]]
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; CHECK: unreachable.exit:
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; CHECK-NEXT: call void @foo()
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; CHECK-NEXT: unreachable
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;
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entry:
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br label %loop.header
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loop.header:
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%iv = phi i32 [ 1, %entry ], [ %iv.next, %loop.latch ]
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%sum = phi i32 [ 0, %entry ], [ %sum.next, %loop.latch ]
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br i1 %c.1, label %then, label %unreachable.exit
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then:
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%i = load i32, i32* %inv
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%c.2 = icmp ult i32 %i, 2
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br i1 %c.2, label %loop.latch, label %unreachable.exit
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loop.latch:
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%gep = getelementptr i32, i32* %ptr, i32 %iv
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%lv = load i32, i32* %gep
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%sum.next = add i32 %sum, %lv
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%iv.next = add nuw nsw i32 %iv, 1
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%c.3 = icmp ult i32 %iv, 1000
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br i1 %c.3, label %loop.header, label %exit
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exit:
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ret i32 %sum.next
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unreachable.exit:
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call void @foo()
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unreachable
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}
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define i32 @peel_readonly_to_make_loads_derefenceable_exits_lead_to_unreachable(i32* %ptr, i32 %N, i32* %inv, i1 %c.1) {
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; CHECK-LABEL: @peel_readonly_to_make_loads_derefenceable_exits_lead_to_unreachable(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
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; CHECK: loop.header:
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; CHECK-NEXT: [[IV:%.*]] = phi i32 [ 1, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
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; CHECK-NEXT: [[SUM:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[SUM_NEXT:%.*]], [[LOOP_LATCH]] ]
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; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[EXIT_2:%.*]]
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; CHECK: then:
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; CHECK-NEXT: [[I:%.*]] = load i32, i32* [[INV:%.*]], align 4
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; CHECK-NEXT: [[C_2:%.*]] = icmp ult i32 [[I]], 2
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; CHECK-NEXT: br i1 [[C_2]], label [[THEN_2:%.*]], label [[EXIT_2]]
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; CHECK: then.2:
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; CHECK-NEXT: [[C_4:%.*]] = icmp ult i32 [[I]], 4
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; CHECK-NEXT: br i1 [[C_4]], label [[LOOP_LATCH]], label [[EXIT_3:%.*]]
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; CHECK: loop.latch:
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; CHECK-NEXT: [[GEP:%.*]] = getelementptr i32, i32* [[PTR:%.*]], i32 [[IV]]
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; CHECK-NEXT: [[LV:%.*]] = load i32, i32* [[GEP]], align 4
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; CHECK-NEXT: [[SUM_NEXT]] = add i32 [[SUM]], [[LV]]
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; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i32 [[IV]], 1
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; CHECK-NEXT: [[C_3:%.*]] = icmp ult i32 [[IV]], 1000
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; CHECK-NEXT: br i1 [[C_3]], label [[LOOP_HEADER]], label [[EXIT:%.*]]
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; CHECK: exit:
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; CHECK-NEXT: [[SUM_NEXT_LCSSA:%.*]] = phi i32 [ [[SUM_NEXT]], [[LOOP_LATCH]] ]
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; CHECK-NEXT: ret i32 [[SUM_NEXT_LCSSA]]
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; CHECK: exit.2:
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; CHECK-NEXT: br label [[UNREACHABLE_BB:%.*]]
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; CHECK: exit.3:
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; CHECK-NEXT: br label [[UNREACHABLE_BB]]
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; CHECK: unreachable.bb:
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; CHECK-NEXT: call void @foo()
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; CHECK-NEXT: unreachable
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;
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entry:
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br label %loop.header
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loop.header:
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%iv = phi i32 [ 1, %entry ], [ %iv.next, %loop.latch ]
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%sum = phi i32 [ 0, %entry ], [ %sum.next, %loop.latch ]
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br i1 %c.1, label %then, label %exit.2
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then:
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%i = load i32, i32* %inv
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%c.2 = icmp ult i32 %i, 2
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br i1 %c.2, label %then.2, label %exit.2
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then.2:
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%c.4 = icmp ult i32 %i, 4
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br i1 %c.4, label %loop.latch, label %exit.3
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loop.latch:
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%gep = getelementptr i32, i32* %ptr, i32 %iv
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%lv = load i32, i32* %gep
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%sum.next = add i32 %sum, %lv
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%iv.next = add nuw nsw i32 %iv, 1
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%c.3 = icmp ult i32 %iv, 1000
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br i1 %c.3, label %loop.header, label %exit
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exit:
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ret i32 %sum.next
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exit.2:
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br label %unreachable.bb
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exit.3:
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br label %unreachable.bb
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unreachable.bb:
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call void @foo()
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unreachable
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}
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define i32 @do_not_peel_readonly_load_in_header(i32* %ptr, i32 %N, i32* %inv, i1 %c.1) {
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; CHECK-LABEL: @do_not_peel_readonly_load_in_header(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
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; CHECK: loop.header:
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; CHECK-NEXT: [[IV:%.*]] = phi i32 [ 1, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
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; CHECK-NEXT: [[SUM:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[SUM_NEXT:%.*]], [[LOOP_LATCH]] ]
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; CHECK-NEXT: [[I:%.*]] = load i32, i32* [[INV:%.*]], align 4
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; CHECK-NEXT: [[C_2:%.*]] = icmp ult i32 [[I]], 2
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; CHECK-NEXT: br i1 [[C_2]], label [[THEN:%.*]], label [[UNREACHABLE_EXIT:%.*]]
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; CHECK: then:
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; CHECK-NEXT: br i1 [[C_1:%.*]], label [[LOOP_LATCH]], label [[UNREACHABLE_EXIT]]
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; CHECK: loop.latch:
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; CHECK-NEXT: [[GEP:%.*]] = getelementptr i32, i32* [[PTR:%.*]], i32 [[IV]]
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; CHECK-NEXT: [[LV:%.*]] = load i32, i32* [[GEP]], align 4
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; CHECK-NEXT: [[SUM_NEXT]] = add i32 [[SUM]], [[LV]]
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; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i32 [[IV]], 1
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; CHECK-NEXT: [[C_3:%.*]] = icmp ult i32 [[IV]], 1000
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; CHECK-NEXT: br i1 [[C_3]], label [[LOOP_HEADER]], label [[EXIT:%.*]]
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; CHECK: exit:
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; CHECK-NEXT: [[SUM_NEXT_LCSSA:%.*]] = phi i32 [ [[SUM_NEXT]], [[LOOP_LATCH]] ]
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; CHECK-NEXT: ret i32 [[SUM_NEXT_LCSSA]]
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; CHECK: unreachable.exit:
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; CHECK-NEXT: call void @foo()
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; CHECK-NEXT: unreachable
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;
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entry:
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br label %loop.header
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loop.header:
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%iv = phi i32 [ 1, %entry ], [ %iv.next, %loop.latch ]
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%sum = phi i32 [ 0, %entry ], [ %sum.next, %loop.latch ]
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%i = load i32, i32* %inv
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%c.2 = icmp ult i32 %i, 2
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br i1 %c.2, label %then, label %unreachable.exit
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then:
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br i1 %c.1, label %loop.latch, label %unreachable.exit
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loop.latch:
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%gep = getelementptr i32, i32* %ptr, i32 %iv
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%lv = load i32, i32* %gep
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%sum.next = add i32 %sum, %lv
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%iv.next = add nuw nsw i32 %iv, 1
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%c.3 = icmp ult i32 %iv, 1000
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br i1 %c.3, label %loop.header, label %exit
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exit:
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ret i32 %sum.next
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unreachable.exit:
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call void @foo()
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unreachable
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}
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define i32 @do_not_peel_readonly_but_wont_turn_dereferenceable(i32* %ptr, i32 %N, i32 %x, i32* %inv) {
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; CHECK-LABEL: @do_not_peel_readonly_but_wont_turn_dereferenceable(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
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; CHECK: loop.header:
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; CHECK-NEXT: [[IV:%.*]] = phi i32 [ 1, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
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; CHECK-NEXT: [[SUM:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[SUM_NEXT:%.*]], [[LOOP_LATCH]] ]
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; CHECK-NEXT: [[C_1:%.*]] = icmp eq i32 [[IV]], [[X:%.*]]
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; CHECK-NEXT: br i1 [[C_1]], label [[THEN:%.*]], label [[ELSE:%.*]]
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; CHECK: then:
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; CHECK-NEXT: [[I:%.*]] = load i32, i32* [[INV:%.*]], align 4
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; CHECK-NEXT: [[C_2:%.*]] = icmp eq i32 [[I]], 20
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; CHECK-NEXT: br i1 [[C_2]], label [[UNREACHABLE_EXIT:%.*]], label [[LOOP_LATCH]]
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; CHECK: else:
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; CHECK-NEXT: br label [[LOOP_LATCH]]
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; CHECK: loop.latch:
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; CHECK-NEXT: [[P:%.*]] = phi i32 [ [[I]], [[THEN]] ], [ 0, [[ELSE]] ]
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; CHECK-NEXT: [[GEP:%.*]] = getelementptr i32, i32* [[PTR:%.*]], i32 [[IV]]
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; CHECK-NEXT: [[LV:%.*]] = load i32, i32* [[GEP]], align 4
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; CHECK-NEXT: [[ADD_1:%.*]] = add i32 [[LV]], [[P]]
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; CHECK-NEXT: [[SUM_NEXT]] = add i32 [[SUM]], [[ADD_1]]
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; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i32 [[IV]], 1
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; CHECK-NEXT: [[C_3:%.*]] = icmp ult i32 [[IV]], 1000
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; CHECK-NEXT: br i1 [[C_3]], label [[LOOP_HEADER]], label [[EXIT:%.*]]
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; CHECK: exit:
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; CHECK-NEXT: [[SUM_NEXT_LCSSA:%.*]] = phi i32 [ [[SUM_NEXT]], [[LOOP_LATCH]] ]
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; CHECK-NEXT: ret i32 [[SUM_NEXT_LCSSA]]
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; CHECK: unreachable.exit:
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; CHECK-NEXT: call void @foo()
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; CHECK-NEXT: unreachable
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;
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entry:
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br label %loop.header
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loop.header:
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%iv = phi i32 [ 1, %entry ], [ %iv.next, %loop.latch ]
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%sum = phi i32 [ 0, %entry ], [ %sum.next, %loop.latch ]
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%c.1 = icmp eq i32 %iv, %x
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br i1 %c.1, label %then, label %else
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then:
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%i = load i32, i32* %inv
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%c.2 = icmp eq i32 %i, 20
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br i1 %c.2, label %unreachable.exit, label %loop.latch
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else:
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br label %loop.latch
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loop.latch:
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%p = phi i32 [ %i, %then ], [ 0, %else ]
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%gep = getelementptr i32, i32* %ptr, i32 %iv
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%lv = load i32, i32* %gep
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%add.1 = add i32 %lv, %p
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%sum.next = add i32 %sum, %add.1
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%iv.next = add nuw nsw i32 %iv, 1
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%c.3 = icmp ult i32 %iv, 1000
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br i1 %c.3, label %loop.header, label %exit
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exit:
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ret i32 %sum.next
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unreachable.exit:
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call void @foo()
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unreachable
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}
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define i32 @do_not_peel_write1(i32* %ptr, i32 %N, i32 %x, i32* %inv, i32* %dst, i1 %c.1) {
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; CHECK-LABEL: @do_not_peel_write1(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
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; CHECK: loop.header:
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; CHECK-NEXT: [[IV:%.*]] = phi i32 [ 1, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
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; CHECK-NEXT: [[SUM:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[SUM_NEXT:%.*]], [[LOOP_LATCH]] ]
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; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[UNREACHABLE_EXIT:%.*]]
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; CHECK: then:
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; CHECK-NEXT: [[I:%.*]] = load i32, i32* [[INV:%.*]], align 4
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; CHECK-NEXT: [[C_2:%.*]] = icmp ult i32 [[I]], 2
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; CHECK-NEXT: br i1 [[C_2]], label [[LOOP_LATCH]], label [[UNREACHABLE_EXIT]]
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; CHECK: loop.latch:
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; CHECK-NEXT: [[GEP:%.*]] = getelementptr i32, i32* [[PTR:%.*]], i32 [[IV]]
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; CHECK-NEXT: [[LV:%.*]] = load i32, i32* [[GEP]], align 4
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; CHECK-NEXT: store i32 [[LV]], i32* [[DST:%.*]], align 4
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; CHECK-NEXT: [[SUM_NEXT]] = add i32 [[SUM]], [[LV]]
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; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i32 [[IV]], 1
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; CHECK-NEXT: [[C_3:%.*]] = icmp ult i32 [[IV]], 1000
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; CHECK-NEXT: br i1 [[C_3]], label [[LOOP_HEADER]], label [[EXIT:%.*]]
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; CHECK: exit:
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; CHECK-NEXT: [[SUM_NEXT_LCSSA:%.*]] = phi i32 [ [[SUM_NEXT]], [[LOOP_LATCH]] ]
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; CHECK-NEXT: ret i32 [[SUM_NEXT_LCSSA]]
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; CHECK: unreachable.exit:
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; CHECK-NEXT: call void @foo()
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; CHECK-NEXT: unreachable
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;
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entry:
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br label %loop.header
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loop.header:
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%iv = phi i32 [ 1, %entry ], [ %iv.next, %loop.latch ]
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%sum = phi i32 [ 0, %entry ], [ %sum.next, %loop.latch ]
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br i1 %c.1, label %then, label %unreachable.exit
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then:
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%i = load i32, i32* %inv
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%c.2 = icmp ult i32 %i, 2
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br i1 %c.2, label %loop.latch, label %unreachable.exit
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loop.latch:
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%gep = getelementptr i32, i32* %ptr, i32 %iv
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%lv = load i32, i32* %gep
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store i32 %lv, i32* %dst
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%sum.next = add i32 %sum, %lv
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%iv.next = add nuw nsw i32 %iv, 1
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%c.3 = icmp ult i32 %iv, 1000
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br i1 %c.3, label %loop.header, label %exit
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exit:
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ret i32 %sum.next
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unreachable.exit:
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call void @foo()
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unreachable
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}
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define i32 @do_not_peel_write2(i32* %ptr, i32 %N, i32* %inv, i32* %dst) {
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; CHECK-LABEL: @do_not_peel_write2(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
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; CHECK: loop.header:
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; CHECK-NEXT: [[IV:%.*]] = phi i32 [ 1, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
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; CHECK-NEXT: [[SUM:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[SUM_NEXT:%.*]], [[LOOP_LATCH]] ]
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; CHECK-NEXT: [[I:%.*]] = load i32, i32* [[INV:%.*]], align 4
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; CHECK-NEXT: [[C_1:%.*]] = icmp eq i32 [[I]], 20
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; CHECK-NEXT: br i1 [[C_1]], label [[THEN:%.*]], label [[ELSE:%.*]]
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; CHECK: then:
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; CHECK-NEXT: store i32 [[I]], i32* [[DST:%.*]], align 4
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; CHECK-NEXT: br label [[LOOP_LATCH]]
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; CHECK: else:
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; CHECK-NEXT: br label [[UNREACHABLE_EXIT:%.*]]
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; CHECK: loop.latch:
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; CHECK-NEXT: [[GEP:%.*]] = getelementptr i32, i32* [[PTR:%.*]], i32 [[IV]]
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; CHECK-NEXT: [[LV:%.*]] = load i32, i32* [[GEP]], align 4
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; CHECK-NEXT: [[ADD_1:%.*]] = add i32 [[LV]], [[I]]
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; CHECK-NEXT: [[SUM_NEXT]] = add i32 [[SUM]], [[ADD_1]]
|
|
; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i32 [[IV]], 1
|
|
; CHECK-NEXT: [[C_3:%.*]] = icmp ult i32 [[IV]], 1000
|
|
; CHECK-NEXT: br i1 [[C_3]], label [[LOOP_HEADER]], label [[EXIT:%.*]]
|
|
; CHECK: exit:
|
|
; CHECK-NEXT: [[SUM_NEXT_LCSSA:%.*]] = phi i32 [ [[SUM_NEXT]], [[LOOP_LATCH]] ]
|
|
; CHECK-NEXT: ret i32 [[SUM_NEXT_LCSSA]]
|
|
; CHECK: unreachable.exit:
|
|
; CHECK-NEXT: call void @foo()
|
|
; CHECK-NEXT: unreachable
|
|
;
|
|
entry:
|
|
br label %loop.header
|
|
|
|
loop.header:
|
|
%iv = phi i32 [ 1, %entry ], [ %iv.next, %loop.latch ]
|
|
%sum = phi i32 [ 0, %entry ], [ %sum.next, %loop.latch ]
|
|
%i = load i32, i32* %inv
|
|
%c.1 = icmp eq i32 %i, 20
|
|
br i1 %c.1, label %then, label %else
|
|
|
|
then:
|
|
store i32 %i, i32* %dst
|
|
br label %loop.latch
|
|
|
|
else:
|
|
br label %unreachable.exit
|
|
|
|
loop.latch:
|
|
%gep = getelementptr i32, i32* %ptr, i32 %iv
|
|
%lv = load i32, i32* %gep
|
|
%add.1 = add i32 %lv, %i
|
|
%sum.next = add i32 %sum, %add.1
|
|
%iv.next = add nuw nsw i32 %iv, 1
|
|
%c.3 = icmp ult i32 %iv, 1000
|
|
br i1 %c.3, label %loop.header, label %exit
|
|
|
|
exit:
|
|
ret i32 %sum.next
|
|
|
|
unreachable.exit:
|
|
call void @foo()
|
|
unreachable
|
|
}
|
|
|
|
declare i32 @llvm.experimental.deoptimize.i32(...)
|
|
|
|
define i32 @peel_with_deopt_exit(i32* %ptr, i32 %N, i32* %inv, i1 %c.1) {
|
|
; CHECK-LABEL: @peel_with_deopt_exit(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
|
|
; CHECK: loop.header:
|
|
; CHECK-NEXT: [[IV:%.*]] = phi i32 [ 1, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
|
|
; CHECK-NEXT: [[SUM:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[SUM_NEXT:%.*]], [[LOOP_LATCH]] ]
|
|
; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[DEOPT_EXIT:%.*]]
|
|
; CHECK: then:
|
|
; CHECK-NEXT: [[I:%.*]] = load i32, i32* [[INV:%.*]], align 4
|
|
; CHECK-NEXT: [[C_2:%.*]] = icmp ult i32 [[I]], 2
|
|
; CHECK-NEXT: br i1 [[C_2]], label [[LOOP_LATCH]], label [[DEOPT_EXIT]]
|
|
; CHECK: loop.latch:
|
|
; CHECK-NEXT: [[GEP:%.*]] = getelementptr i32, i32* [[PTR:%.*]], i32 [[IV]]
|
|
; CHECK-NEXT: [[LV:%.*]] = load i32, i32* [[GEP]], align 4
|
|
; CHECK-NEXT: [[SUM_NEXT]] = add i32 [[SUM]], [[LV]]
|
|
; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i32 [[IV]], 1
|
|
; CHECK-NEXT: [[C_3:%.*]] = icmp ult i32 [[IV]], 1000
|
|
; CHECK-NEXT: br i1 [[C_3]], label [[LOOP_HEADER]], label [[EXIT:%.*]]
|
|
; CHECK: exit:
|
|
; CHECK-NEXT: [[SUM_NEXT_LCSSA:%.*]] = phi i32 [ [[SUM_NEXT]], [[LOOP_LATCH]] ]
|
|
; CHECK-NEXT: ret i32 [[SUM_NEXT_LCSSA]]
|
|
; CHECK: deopt.exit:
|
|
; CHECK-NEXT: [[SUM_LCSSA:%.*]] = phi i32 [ [[SUM]], [[THEN]] ], [ [[SUM]], [[LOOP_HEADER]] ]
|
|
; CHECK-NEXT: [[RVAL:%.*]] = call i32 (...) @llvm.experimental.deoptimize.i32() [ "deopt"(i32 [[SUM_LCSSA]]) ]
|
|
; CHECK-NEXT: ret i32 [[RVAL]]
|
|
;
|
|
entry:
|
|
br label %loop.header
|
|
|
|
loop.header:
|
|
%iv = phi i32 [ 1, %entry ], [ %iv.next, %loop.latch ]
|
|
%sum = phi i32 [ 0, %entry ], [ %sum.next, %loop.latch ]
|
|
br i1 %c.1, label %then, label %deopt.exit
|
|
|
|
then:
|
|
%i = load i32, i32* %inv
|
|
%c.2 = icmp ult i32 %i, 2
|
|
br i1 %c.2, label %loop.latch, label %deopt.exit
|
|
|
|
loop.latch:
|
|
%gep = getelementptr i32, i32* %ptr, i32 %iv
|
|
%lv = load i32, i32* %gep
|
|
%sum.next = add i32 %sum, %lv
|
|
%iv.next = add nuw nsw i32 %iv, 1
|
|
%c.3 = icmp ult i32 %iv, 1000
|
|
br i1 %c.3, label %loop.header, label %exit
|
|
|
|
exit:
|
|
ret i32 %sum.next
|
|
|
|
deopt.exit:
|
|
%rval = call i32(...) @llvm.experimental.deoptimize.i32() [ "deopt"(i32 %sum) ]
|
|
ret i32 %rval
|
|
}
|
|
|
|
define i32 @do_not_peel_when_header_exiting(i32* %ptr, i32 %N, i32* %inv) {
|
|
; CHECK-LABEL: @do_not_peel_when_header_exiting(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
|
|
; CHECK: loop.header:
|
|
; CHECK-NEXT: [[IV:%.*]] = phi i32 [ 1, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
|
|
; CHECK-NEXT: [[SUM:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[SUM_NEXT:%.*]], [[LOOP_LATCH]] ]
|
|
; CHECK-NEXT: [[C_1:%.*]] = icmp ult i32 [[IV]], 1000
|
|
; CHECK-NEXT: br i1 [[C_1]], label [[THEN:%.*]], label [[EXIT:%.*]]
|
|
; CHECK: then:
|
|
; CHECK-NEXT: [[I:%.*]] = load i32, i32* [[INV:%.*]], align 4
|
|
; CHECK-NEXT: [[C_2:%.*]] = icmp ult i32 [[I]], 2
|
|
; CHECK-NEXT: br i1 [[C_2]], label [[LOOP_LATCH]], label [[UNREACHABLE_EXIT:%.*]]
|
|
; CHECK: loop.latch:
|
|
; CHECK-NEXT: [[GEP:%.*]] = getelementptr i32, i32* [[PTR:%.*]], i32 [[IV]]
|
|
; CHECK-NEXT: [[LV:%.*]] = load i32, i32* [[GEP]], align 4
|
|
; CHECK-NEXT: [[SUM_NEXT]] = add i32 [[SUM]], [[LV]]
|
|
; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i32 [[IV]], 1
|
|
; CHECK-NEXT: br label [[LOOP_HEADER]]
|
|
; CHECK: exit:
|
|
; CHECK-NEXT: [[SUM_LCSSA:%.*]] = phi i32 [ [[SUM]], [[LOOP_HEADER]] ]
|
|
; CHECK-NEXT: ret i32 [[SUM_LCSSA]]
|
|
; CHECK: unreachable.exit:
|
|
; CHECK-NEXT: call void @foo()
|
|
; CHECK-NEXT: unreachable
|
|
;
|
|
entry:
|
|
br label %loop.header
|
|
|
|
loop.header:
|
|
%iv = phi i32 [ 1, %entry ], [ %iv.next, %loop.latch ]
|
|
%sum = phi i32 [ 0, %entry ], [ %sum.next, %loop.latch ]
|
|
%c.1 = icmp ult i32 %iv, 1000
|
|
br i1 %c.1, label %then, label %exit
|
|
|
|
then:
|
|
%i = load i32, i32* %inv
|
|
%c.2 = icmp ult i32 %i, 2
|
|
br i1 %c.2, label %loop.latch, label %unreachable.exit
|
|
|
|
loop.latch:
|
|
%gep = getelementptr i32, i32* %ptr, i32 %iv
|
|
%lv = load i32, i32* %gep
|
|
%sum.next = add i32 %sum, %lv
|
|
%iv.next = add nuw nsw i32 %iv, 1
|
|
br label %loop.header
|
|
|
|
exit:
|
|
ret i32 %sum
|
|
|
|
unreachable.exit:
|
|
call void @foo()
|
|
unreachable
|
|
}
|
|
|
|
define i32 @do_not_peel_readonly_to_make_loads_derefenceable_but_does_not_control_exit(i32* %ptr, i32 %N, i32* %inv, i1 %c.1, i32 %N.2) {
|
|
; CHECK-LABEL: @do_not_peel_readonly_to_make_loads_derefenceable_but_does_not_control_exit(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
|
|
; CHECK: loop.header:
|
|
; CHECK-NEXT: [[IV:%.*]] = phi i32 [ 1, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
|
|
; CHECK-NEXT: [[SUM:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[SUM_NEXT:%.*]], [[LOOP_LATCH]] ]
|
|
; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[UNREACHABLE_EXIT:%.*]]
|
|
; CHECK: then:
|
|
; CHECK-NEXT: [[I:%.*]] = load i32, i32* [[INV:%.*]], align 4
|
|
; CHECK-NEXT: [[C_2:%.*]] = icmp ult i32 [[IV]], [[N_2:%.*]]
|
|
; CHECK-NEXT: br i1 [[C_2]], label [[LOOP_LATCH]], label [[UNREACHABLE_EXIT]]
|
|
; CHECK: loop.latch:
|
|
; CHECK-NEXT: [[GEP:%.*]] = getelementptr i32, i32* [[PTR:%.*]], i32 [[IV]]
|
|
; CHECK-NEXT: [[LV:%.*]] = load i32, i32* [[GEP]], align 4
|
|
; CHECK-NEXT: [[SUM_NEXT]] = add i32 [[SUM]], [[LV]]
|
|
; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i32 [[IV]], 1
|
|
; CHECK-NEXT: [[C_3:%.*]] = icmp ult i32 [[IV]], 1000
|
|
; CHECK-NEXT: br i1 [[C_3]], label [[LOOP_HEADER]], label [[EXIT:%.*]]
|
|
; CHECK: exit:
|
|
; CHECK-NEXT: [[SUM_NEXT_LCSSA:%.*]] = phi i32 [ [[SUM_NEXT]], [[LOOP_LATCH]] ]
|
|
; CHECK-NEXT: ret i32 [[SUM_NEXT_LCSSA]]
|
|
; CHECK: unreachable.exit:
|
|
; CHECK-NEXT: call void @foo()
|
|
; CHECK-NEXT: unreachable
|
|
;
|
|
entry:
|
|
br label %loop.header
|
|
|
|
loop.header:
|
|
%iv = phi i32 [ 1, %entry ], [ %iv.next, %loop.latch ]
|
|
%sum = phi i32 [ 0, %entry ], [ %sum.next, %loop.latch ]
|
|
br i1 %c.1, label %then, label %unreachable.exit
|
|
|
|
then:
|
|
%i = load i32, i32* %inv
|
|
%c.2 = icmp ult i32 %iv, %N.2
|
|
br i1 %c.2, label %loop.latch, label %unreachable.exit
|
|
|
|
loop.latch:
|
|
%gep = getelementptr i32, i32* %ptr, i32 %iv
|
|
%lv = load i32, i32* %gep
|
|
%sum.next = add i32 %sum, %lv
|
|
%iv.next = add nuw nsw i32 %iv, 1
|
|
%c.3 = icmp ult i32 %iv, 1000
|
|
br i1 %c.3, label %loop.header, label %exit
|
|
|
|
exit:
|
|
ret i32 %sum.next
|
|
|
|
unreachable.exit:
|
|
call void @foo()
|
|
unreachable
|
|
}
|
|
|
|
@glob = global i32 10
|
|
|
|
define i32 @do_not_peel_readonly_but_already_deref_glob(i32* %ptr, i32 %N, i1 %c.1) {
|
|
; CHECK-LABEL: @do_not_peel_readonly_but_already_deref_glob(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
|
|
; CHECK: loop.header:
|
|
; CHECK-NEXT: [[IV:%.*]] = phi i32 [ 1, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
|
|
; CHECK-NEXT: [[SUM:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[SUM_NEXT:%.*]], [[LOOP_LATCH]] ]
|
|
; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[UNREACHABLE_EXIT:%.*]]
|
|
; CHECK: then:
|
|
; CHECK-NEXT: [[I:%.*]] = load i32, i32* @glob, align 4
|
|
; CHECK-NEXT: [[C_2:%.*]] = icmp ult i32 [[I]], 2
|
|
; CHECK-NEXT: br i1 [[C_2]], label [[LOOP_LATCH]], label [[UNREACHABLE_EXIT]]
|
|
; CHECK: loop.latch:
|
|
; CHECK-NEXT: [[GEP:%.*]] = getelementptr i32, i32* [[PTR:%.*]], i32 [[IV]]
|
|
; CHECK-NEXT: [[LV:%.*]] = load i32, i32* [[GEP]], align 4
|
|
; CHECK-NEXT: [[SUM_NEXT]] = add i32 [[SUM]], [[LV]]
|
|
; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i32 [[IV]], 1
|
|
; CHECK-NEXT: [[C_3:%.*]] = icmp ult i32 [[IV]], 1000
|
|
; CHECK-NEXT: br i1 [[C_3]], label [[LOOP_HEADER]], label [[EXIT:%.*]]
|
|
; CHECK: exit:
|
|
; CHECK-NEXT: [[SUM_NEXT_LCSSA:%.*]] = phi i32 [ [[SUM_NEXT]], [[LOOP_LATCH]] ]
|
|
; CHECK-NEXT: ret i32 [[SUM_NEXT_LCSSA]]
|
|
; CHECK: unreachable.exit:
|
|
; CHECK-NEXT: call void @foo()
|
|
; CHECK-NEXT: unreachable
|
|
;
|
|
entry:
|
|
br label %loop.header
|
|
|
|
loop.header:
|
|
%iv = phi i32 [ 1, %entry ], [ %iv.next, %loop.latch ]
|
|
%sum = phi i32 [ 0, %entry ], [ %sum.next, %loop.latch ]
|
|
br i1 %c.1, label %then, label %unreachable.exit
|
|
|
|
then:
|
|
%i = load i32, i32* @glob
|
|
%c.2 = icmp ult i32 %i, 2
|
|
br i1 %c.2, label %loop.latch, label %unreachable.exit
|
|
|
|
loop.latch:
|
|
%gep = getelementptr i32, i32* %ptr, i32 %iv
|
|
%lv = load i32, i32* %gep
|
|
%sum.next = add i32 %sum, %lv
|
|
%iv.next = add nuw nsw i32 %iv, 1
|
|
%c.3 = icmp ult i32 %iv, 1000
|
|
br i1 %c.3, label %loop.header, label %exit
|
|
|
|
exit:
|
|
ret i32 %sum.next
|
|
|
|
unreachable.exit:
|
|
call void @foo()
|
|
unreachable
|
|
}
|