derek.holloway
7502bf64a4
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97 lines
2.4 KiB
LLVM
97 lines
2.4 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -passes=simplifycfg -simplifycfg-require-and-preserve-domtree < %s | FileCheck %s
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declare void @foo(i32)
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define void @br_undef_simple(i1 %arg) {
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; CHECK-LABEL: @br_undef_simple(
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; CHECK-NEXT: call void @foo(i32 0)
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; CHECK-NEXT: br i1 %arg, label [[IF:%.*]], label [[ELSE:%.*]]
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; CHECK: common.ret:
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; CHECK-NEXT: ret void
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; CHECK: if:
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; CHECK-NEXT: call void @foo(i32 1)
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; CHECK-NEXT: br label [[COMMON_RET:%.*]]
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; CHECK: else:
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; CHECK-NEXT: call void @foo(i32 2)
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; CHECK-NEXT: br label [[COMMON_RET]]
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;
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call void @foo(i32 0)
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br i1 %arg, label %if, label %else
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if:
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call void @foo(i32 1)
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ret void
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else:
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call void @foo(i32 2)
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ret void
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}
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define void @br_poison_simple() {
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; CHECK-LABEL: @br_poison_simple(
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; CHECK-NEXT: call void @foo(i32 0)
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; CHECK-NEXT: br i1 poison, label [[IF:%.*]], label [[ELSE:%.*]]
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; CHECK: common.ret:
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; CHECK-NEXT: ret void
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; CHECK: if:
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; CHECK-NEXT: call void @foo(i32 1)
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; CHECK-NEXT: br label [[COMMON_RET:%.*]]
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; CHECK: else:
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; CHECK-NEXT: call void @foo(i32 2)
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; CHECK-NEXT: br label [[COMMON_RET]]
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;
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call void @foo(i32 0)
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br i1 poison, label %if, label %else
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if:
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call void @foo(i32 1)
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ret void
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else:
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call void @foo(i32 2)
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ret void
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}
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define void @br_poison_succs_used(i32 %v) {
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; CHECK-LABEL: @br_poison_succs_used(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: switch i32 [[V:%.*]], label [[BR:%.*]] [
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; CHECK-NEXT: i32 1, label [[IF:%.*]]
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; CHECK-NEXT: i32 2, label [[ELSE:%.*]]
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; CHECK-NEXT: ]
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; CHECK: br:
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; CHECK-NEXT: call void @foo(i32 0)
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; CHECK-NEXT: br i1 poison, label [[IF]], label [[ELSE]]
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; CHECK: common.ret:
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; CHECK-NEXT: ret void
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; CHECK: if:
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; CHECK-NEXT: [[PHI1:%.*]] = phi i32 [ 1, [[BR]] ], [ 2, [[ENTRY:%.*]] ]
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; CHECK-NEXT: call void @foo(i32 [[PHI1]])
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; CHECK-NEXT: br label [[COMMON_RET:%.*]]
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; CHECK: else:
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; CHECK-NEXT: [[PHI2:%.*]] = phi i32 [ 3, [[BR]] ], [ 4, [[ENTRY]] ]
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; CHECK-NEXT: call void @foo(i32 [[PHI2]])
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; CHECK-NEXT: br label [[COMMON_RET]]
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;
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entry:
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switch i32 %v, label %br [
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i32 1, label %if
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i32 2, label %else
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]
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br:
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call void @foo(i32 0)
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br i1 poison, label %if, label %else
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if:
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%phi1 = phi i32 [ 1, %br ], [ 2, %entry ]
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call void @foo(i32 %phi1)
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ret void
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else:
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%phi2 = phi i32 [ 3, %br ], [ 4, %entry ]
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call void @foo(i32 %phi2)
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ret void
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}
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