60 lines
2.6 KiB
LLVM
60 lines
2.6 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -loop-idiom -S %s | FileCheck %s
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define void @phi_insertion(i1 %c, i32* %ptr.start, i32* %ptr.end, i64 %offset) {
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; CHECK-LABEL: @phi_insertion(
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; CHECK-NEXT: bb5:
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; CHECK-NEXT: br i1 [[C:%.*]], label [[LOOP_0_PH:%.*]], label [[EXIT:%.*]]
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; CHECK: loop.0.ph:
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; CHECK-NEXT: br label [[LOOP_0:%.*]]
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; CHECK: loop.0:
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; CHECK-NEXT: [[IV_0:%.*]] = phi i32* [ [[IV_0_NEXT:%.*]], [[LOOP_0_LATCH:%.*]] ], [ [[PTR_START:%.*]], [[LOOP_0_PH]] ]
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; CHECK-NEXT: [[COND:%.*]] = icmp eq i32* [[IV_0]], [[PTR_END:%.*]]
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; CHECK-NEXT: br i1 [[COND]], label [[LOOP_1_PREHEADER:%.*]], label [[EXIT_LOOPEXIT:%.*]]
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; CHECK: loop.1.preheader:
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; CHECK-NEXT: br label [[LOOP_1:%.*]]
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; CHECK: loop.1:
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; CHECK-NEXT: [[PTR_1:%.*]] = getelementptr inbounds i32, i32* [[IV_0]], i64 0
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; CHECK-NEXT: [[LV:%.*]] = load i32, i32* [[PTR_1]], align 8
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; CHECK-NEXT: [[PTR_2:%.*]] = getelementptr inbounds i32, i32* [[IV_0]], i64 0
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; CHECK-NEXT: store i32 [[LV]], i32* [[PTR_2]], align 8
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; CHECK-NEXT: [[IV_1_NEXT:%.*]] = add nuw nsw i64 0, 1
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; CHECK-NEXT: [[EC:%.*]] = icmp eq i64 [[IV_1_NEXT]], 100
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; CHECK-NEXT: br i1 [[EC]], label [[LOOP_0_LATCH]], label [[LOOP_1]]
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; CHECK: loop.0.latch:
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; CHECK-NEXT: [[IV_0_NEXT]] = getelementptr inbounds i32, i32* [[IV_0]], i64 [[OFFSET:%.*]]
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; CHECK-NEXT: br label [[LOOP_0]]
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; CHECK: exit.loopexit:
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; CHECK-NEXT: br label [[EXIT]]
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; CHECK: exit:
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; CHECK-NEXT: ret void
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;
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bb5:
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br i1 %c, label %loop.0.ph, label %exit
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loop.0.ph: ; preds = %bb5
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br label %loop.0
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loop.0: ; preds = %loop.0.latch, %loop.0.ph
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%iv.0 = phi i32* [ %iv.0.next, %loop.0.latch ], [ %ptr.start, %loop.0.ph ]
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%cond = icmp eq i32* %iv.0, %ptr.end
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br i1 %cond, label %loop.1, label %exit
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loop.1: ; preds = %loop.1, %loop.0
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%iv.1 = phi i64 [ 0, %loop.0 ], [ %iv.1, %loop.1 ]
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%ptr.1 = getelementptr inbounds i32, i32* %iv.0, i64 %iv.1
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%lv = load i32, i32* %ptr.1, align 8
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%ptr.2 = getelementptr inbounds i32, i32* %iv.0, i64 %iv.1
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store i32 %lv, i32* %ptr.2, align 8
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%iv.1.next = add nuw nsw i64 %iv.1, 1
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%ec = icmp eq i64 %iv.1.next, 100
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br i1 %ec, label %loop.0.latch, label %loop.1
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loop.0.latch: ; preds = %loop.1
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%iv.0.next = getelementptr inbounds i32, i32* %iv.0, i64 %offset
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br label %loop.0
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exit: ; preds = %loop.0, %bb5
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ret void
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}
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