derek.holloway
7502bf64a4
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107 lines
3.2 KiB
LLVM
107 lines
3.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 6
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; RUN: opt -S -passes=fix-irreducible %s | FileCheck %s
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declare void @foo()
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define void @bar(i32 %0) {
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; CHECK-LABEL: define void @bar(
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; CHECK-SAME: i32 [[TMP0:%.*]]) {
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; CHECK-NEXT: [[ENTRY:.*:]]
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; CHECK-NEXT: br label %[[BB_1:.*]]
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; CHECK: [[BB_1]]:
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; CHECK-NEXT: [[V_0:%.*]] = icmp slt i32 [[TMP0]], 35
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; CHECK-NEXT: br i1 [[V_0]], label %[[BB_3:.*]], label %[[BB_2:.*]]
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; CHECK: [[BB_2]]:
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; CHECK-NEXT: [[V_1:%.*]] = icmp slt i32 [[TMP0]], 47
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; CHECK-NEXT: br label %[[IRR_GUARD:.*]]
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; CHECK: [[BB_3]]:
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; CHECK-NEXT: [[V_2:%.*]] = icmp eq i32 [[TMP0]], 0
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; CHECK-NEXT: br label %[[IRR_GUARD]]
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; CHECK: [[BB_4:.*]]:
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; CHECK-NEXT: br label %[[IRR_GUARD]]
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; CHECK: [[BB_5:.*]]:
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; CHECK-NEXT: [[V_4:%.*]] = icmp eq i32 [[V_3_MOVED:%.*]], 0
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; CHECK-NEXT: br i1 true, label %[[BB_6:.*]], label %[[BB_7:.*]]
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; CHECK: [[BB_6]]:
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; CHECK-NEXT: [[V_5:%.*]] = phi i32 [ [[V_3_MOVED]], %[[BB_5]] ], [ [[V_5_MOVED:%.*]], %[[IRR_GUARD1:.*]] ]
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; CHECK-NEXT: call void @foo()
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; CHECK-NEXT: br label %[[BB_4]]
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; CHECK: [[BB_7]]:
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; CHECK-NEXT: ret void
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; CHECK: [[IRR_GUARD]]:
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; CHECK-NEXT: [[V_5_MOVED]] = phi i32 [ poison, %[[BB_4]] ], [ poison, %[[BB_2]] ], [ 0, %[[BB_3]] ]
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; CHECK-NEXT: [[V_3_MOVED]] = phi i32 [ 0, %[[BB_4]] ], [ 1, %[[BB_2]] ], [ poison, %[[BB_3]] ]
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; CHECK-NEXT: [[GUARD_BB_5:%.*]] = phi i1 [ true, %[[BB_4]] ], [ true, %[[BB_2]] ], [ false, %[[BB_3]] ]
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; CHECK-NEXT: [[GUARD_BB_6:%.*]] = phi i1 [ false, %[[BB_4]] ], [ false, %[[BB_2]] ], [ [[V_2]], %[[BB_3]] ]
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; CHECK-NEXT: br i1 [[GUARD_BB_5]], label %[[BB_5]], label %[[IRR_GUARD1]]
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; CHECK: [[IRR_GUARD1]]:
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; CHECK-NEXT: br i1 [[GUARD_BB_6]], label %[[BB_6]], label %[[BB_4]]
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;
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entry:
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br label %bb.1
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bb.1:
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%v.0 = icmp slt i32 %0, 35
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br i1 %v.0, label %bb.3, label %bb.2
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bb.2:
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%v.1 = icmp slt i32 %0, 47
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br i1 %v.1, label %bb.5, label %bb.5
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bb.3:
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%v.2 = icmp eq i32 %0, 0
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br i1 %v.2, label %bb.6, label %bb.4
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bb.4:
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br label %bb.5
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bb.5:
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%v.3 = phi i32 [ 0, %bb.4 ], [ 1, %bb.2 ], [ 1, %bb.2 ]
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%v.4 = icmp eq i32 %v.3, 0
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br i1 true, label %bb.6, label %bb.7
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bb.6:
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%v.5 = phi i32 [ %v.3, %bb.5 ], [ 0, %bb.3 ]
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call void @foo()
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br label %bb.4
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bb.7:
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ret void
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}
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define void @baz(i1 %v.0, i1 %v.1) {
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; CHECK-LABEL: define void @baz(
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; CHECK-SAME: i1 [[V_0:%.*]], i1 [[V_1:%.*]]) {
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; CHECK-NEXT: [[ENTRY:.*:]]
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; CHECK-NEXT: br i1 [[V_0]], label %[[BB_1:.*]], label %[[BB_2:.*]]
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; CHECK: [[BB_1]]:
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; CHECK-NEXT: br label %[[IRR_GUARD:.*]]
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; CHECK: [[BB_2]]:
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; CHECK-NEXT: br label %[[IRR_GUARD]]
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; CHECK: [[BB_3:.*]]:
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; CHECK-NEXT: br label %[[BB_4:.*]]
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; CHECK: [[BB_4]]:
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; CHECK-NEXT: br label %[[IRR_GUARD]]
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; CHECK: [[IRR_GUARD]]:
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; CHECK-NEXT: [[GUARD_BB_3:%.*]] = phi i1 [ true, %[[BB_4]] ], [ true, %[[BB_2]] ], [ false, %[[BB_1]] ]
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; CHECK-NEXT: br i1 [[GUARD_BB_3]], label %[[BB_3]], label %[[BB_4]]
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;
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entry:
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br i1 %v.0, label %bb.1, label %bb.2
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bb.1:
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br label %bb.4
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bb.2:
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br i1 %v.1, label %bb.3, label %bb.3
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bb.3:
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br label %bb.4
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bb.4:
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br label %bb.3
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; required to trigger the issue.
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uselistorder label %bb.4, { 1, 0 }
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}
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