a7684940f0
We only need to remove non-TrueBB/non-FalseBB successors, and we only need to do that once. We don't need to insert any new edges, because no new successors will be added.
59 lines
1.7 KiB
LLVM
59 lines
1.7 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -simplifycfg -simplifycfg-require-and-preserve-domtree=1 < %s | FileCheck %s
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declare void @widget()
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declare void @baz(i8)
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declare void @snork()
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declare void @spam(i8)
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declare void @zot()
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define void @wombat(i64 %arg, i1 %arg1) {
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; CHECK-LABEL: @wombat(
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; CHECK-NEXT: bb:
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; CHECK-NEXT: [[COND:%.*]] = icmp eq i64 [[ARG:%.*]], 0
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; CHECK-NEXT: br i1 [[COND]], label [[BB4:%.*]], label [[BB2:%.*]]
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; CHECK: bb2:
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; CHECK-NEXT: call void @widget()
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; CHECK-NEXT: br label [[BB4]]
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; CHECK: bb4:
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; CHECK-NEXT: [[TMP:%.*]] = phi i8 [ 0, [[BB:%.*]] ], [ 1, [[BB2]] ]
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; CHECK-NEXT: call void @baz(i8 [[TMP]])
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; CHECK-NEXT: call void @snork()
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; CHECK-NEXT: call void @spam(i8 4)
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; CHECK-NEXT: ret void
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;
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bb:
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switch i64 %arg, label %bb2 [
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i64 0, label %bb3
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]
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bb2: ; preds = %bb
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call void @widget()
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br label %bb3
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bb3: ; preds = %bb2, %bb
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%tmp = phi i8 [ 0, %bb ], [ 1, %bb2 ]
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br label %bb4
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bb4: ; preds = %bb3
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call void @baz(i8 %tmp)
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%tmp5 = select i1 %arg1, i64 6, i64 3
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switch i64 %tmp5, label %bb7 [
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i64 1, label %bb6
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i64 0, label %bb8
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]
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bb6: ; preds = %bb4
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call void @zot()
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br label %bb8
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bb7: ; preds = %bb4
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call void @snork()
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br label %bb8
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bb8: ; preds = %bb7, %bb6, %bb4
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%tmp9 = phi i8 [ 2, %bb4 ], [ 3, %bb6 ], [ 4, %bb7 ]
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call void @spam(i8 %tmp9)
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ret void
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}
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