forked from OSchip/llvm-project
72 lines
2.7 KiB
LLVM
72 lines
2.7 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -loop-reduce -loop-unroll -unroll-runtime -verify-scev -verify-loop-lcssa < %s -S | FileCheck %s
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; Test case for PR43458. We check that we do properly invalidate LCSSA phi
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; users in SCEV. Run -loop-reduce first, so SCEV is already populated.
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define void @spam() {
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; CHECK-LABEL: @spam(
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; CHECK-NEXT: bb:
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; CHECK-NEXT: br label [[BB3:%.*]]
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; CHECK: bb3:
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; CHECK-NEXT: br i1 false, label [[BB9:%.*]], label [[BB5_PREHEADER:%.*]]
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; CHECK: bb5.preheader:
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; CHECK-NEXT: br label [[BB5:%.*]]
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; CHECK: bb5:
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; CHECK-NEXT: br label [[BB9]]
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; CHECK: bb9:
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; CHECK-NEXT: [[TMP10:%.*]] = phi i64 [ 0, [[BB3]] ], [ 5, [[BB5]] ]
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; CHECK-NEXT: [[TMP11:%.*]] = trunc i64 [[TMP10]] to i32
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; CHECK-NEXT: [[TMP21:%.*]] = sext i32 [[TMP11]] to i64
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; CHECK-NEXT: [[TMP22:%.*]] = icmp slt i64 0, [[TMP21]]
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; CHECK-NEXT: br i1 [[TMP22]], label [[BB24_PREHEADER:%.*]], label [[BB29:%.*]]
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; CHECK: bb24.preheader:
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; CHECK-NEXT: br label [[BB24:%.*]]
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; CHECK: bb24:
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; CHECK-NEXT: [[TMP25:%.*]] = phi i64 [ [[TMP26:%.*]], [[BB24]] ], [ 0, [[BB24_PREHEADER]] ]
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; CHECK-NEXT: [[TMP26]] = add nuw nsw i64 [[TMP25]], 1
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; CHECK-NEXT: [[TMP27:%.*]] = icmp slt i64 [[TMP26]], [[TMP21]]
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; CHECK-NEXT: br i1 [[TMP27]], label [[BB24]], label [[BB29_LOOPEXIT:%.*]]
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; CHECK: bb29.loopexit:
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; CHECK-NEXT: br label [[BB29]]
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; CHECK: bb29:
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; CHECK-NEXT: ret void
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;
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bb:
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br label %bb3
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bb3: ; preds = %bb9, %bb
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%pv1 = phi i64 [ 0, %bb ], [ %iv1, %bb9]
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%c1 = icmp eq i64 %pv1, 5
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br i1 %c1, label %bb9, label %bb5
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bb5: ; preds = %bb5, %bb3
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%pv = phi i64 [ 0, %bb3], [ %tmp6, %bb5]
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%tmp6 = add nsw i64 %pv, 1
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%cond = icmp eq i64 %tmp6, 5
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br i1 %cond, label %bb8, label %bb5
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bb8: ; preds = %bb5
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br label %bb9
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bb9: ; preds = %bb8, %bb3
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%tmp10 = phi i64 [ 0, %bb3 ], [ %tmp6, %bb8 ]
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%tmp11 = trunc i64 %tmp10 to i32
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%iv1 = add nsw i64 %pv1, 1
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br i1 false, label %bb3, label %bb20
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bb20: ; preds = %bb9
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%tmp21 = sext i32 %tmp11 to i64
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%tmp22 = icmp slt i64 0, %tmp21
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br i1 %tmp22, label %bb24, label %bb29
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bb24: ; preds = %bb24, %bb20
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%tmp25 = phi i64 [ %tmp26, %bb24 ], [ 0, %bb20 ]
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%tmp26 = add nuw nsw i64 %tmp25, 1
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%tmp27 = icmp slt i64 %tmp26, %tmp21
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br i1 %tmp27, label %bb24, label %bb29
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bb29: ; preds = %bb24, %bb20
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ret void
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}
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