252 lines
7.2 KiB
LLVM
252 lines
7.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -passes=constraint-elimination -S %s | FileCheck %s
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declare void @use(i1)
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declare void @llvm.assume(i1)
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define void @phi_loop_1(i8 %x) {
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; CHECK-LABEL: @phi_loop_1(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[C_0:%.*]] = icmp uge i8 [[X:%.*]], 10
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; CHECK-NEXT: br i1 [[C_0]], label [[LOOP:%.*]], label [[EXIT:%.*]]
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; CHECK: loop:
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; CHECK-NEXT: [[IV:%.*]] = phi i8 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ]
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; CHECK-NEXT: [[C_PHI:%.*]] = phi i1 [ false, [[ENTRY]] ], [ true, [[LOOP]] ]
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; CHECK-NEXT: call void @use(i1 true)
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; CHECK-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1
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; CHECK-NEXT: [[EC:%.*]] = icmp ult i8 [[IV_NEXT]], 3
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; CHECK-NEXT: br i1 [[EC]], label [[LOOP]], label [[LOOP_EXIT:%.*]]
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; CHECK: loop.exit:
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; CHECK-NEXT: call void @use(i1 [[C_PHI]])
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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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entry:
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%c.0 = icmp uge i8 %x, 10
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br i1 %c.0, label %loop, label %exit
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loop:
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%iv = phi i8 [ 0, %entry ], [ %iv.next, %loop ]
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%c.phi = phi i1 [ false, %entry ], [ %t.1, %loop ]
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%t.1 = icmp uge i8 %x, 8
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call void @use(i1 %t.1)
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%iv.next = add i8 %iv, 1
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%ec = icmp ult i8 %iv.next, 3
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br i1 %ec, label %loop, label %loop.exit
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loop.exit:
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call void @use(i1 %c.phi)
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br label %exit
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exit:
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ret void
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}
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define void @phi_loop_2(i8 %x) {
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; CHECK-LABEL: @phi_loop_2(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[C_0:%.*]] = icmp uge i8 [[X:%.*]], 10
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; CHECK-NEXT: br i1 [[C_0]], label [[LOOP_1_HEADER:%.*]], label [[EXIT:%.*]]
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; CHECK: loop.1.header:
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; CHECK-NEXT: [[C_PHI:%.*]] = phi i1 [ false, [[ENTRY:%.*]] ], [ true, [[LOOP_1_LATCH:%.*]] ]
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; CHECK-NEXT: br label [[LOOP_2:%.*]]
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; CHECK: loop.2:
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; CHECK-NEXT: [[IV:%.*]] = phi i8 [ 0, [[LOOP_1_HEADER]] ], [ [[IV_NEXT:%.*]], [[LOOP_2]] ]
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; CHECK-NEXT: call void @use(i1 true)
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; CHECK-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1
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; CHECK-NEXT: [[EC:%.*]] = icmp ult i8 [[IV_NEXT]], 3
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; CHECK-NEXT: br i1 [[EC]], label [[LOOP_2]], label [[LOOP_1_LATCH]]
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; CHECK: loop.1.latch:
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; CHECK-NEXT: br i1 false, label [[LOOP_1_HEADER]], label [[LOOP_1_EXIT:%.*]]
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; CHECK: loop.1.exit:
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; CHECK-NEXT: call void @use(i1 [[C_PHI]])
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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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entry:
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%c.0 = icmp uge i8 %x, 10
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br i1 %c.0, label %loop.1.header, label %exit
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loop.1.header:
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%c.phi = phi i1 [ false, %entry ], [ %t.1, %loop.1.latch ]
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br label %loop.2
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loop.2:
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%iv = phi i8 [ 0, %loop.1.header ], [ %iv.next, %loop.2 ]
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%t.1 = icmp uge i8 %x, 8
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call void @use(i1 %t.1)
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%iv.next = add i8 %iv, 1
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%ec = icmp ult i8 %iv.next, 3
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br i1 %ec, label %loop.2, label %loop.1.latch
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loop.1.latch:
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br i1 false, label %loop.1.header, label %loop.1.exit
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loop.1.exit:
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call void @use(i1 %c.phi)
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br label %exit
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exit:
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ret void
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}
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define void @phi_loop_3(i8 %x, i1 %c) {
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; CHECK-LABEL: @phi_loop_3(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[C_0:%.*]] = icmp uge i8 [[X:%.*]], 10
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; CHECK-NEXT: br i1 [[C_0]], label [[LOOP:%.*]], label [[EXIT:%.*]]
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; CHECK: loop:
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; CHECK-NEXT: [[IV:%.*]] = phi i8 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
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; CHECK-NEXT: [[C_PHI:%.*]] = phi i1 [ false, [[ENTRY]] ], [ true, [[LOOP_LATCH]] ]
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; CHECK-NEXT: br i1 [[C:%.*]], label [[LOOP_LATCH]], label [[LOOP_EXIT:%.*]]
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; CHECK: loop.latch:
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; CHECK-NEXT: call void @use(i1 true)
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; CHECK-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1
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; CHECK-NEXT: [[EC:%.*]] = icmp ult i8 [[IV_NEXT]], 3
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; CHECK-NEXT: br i1 [[EC]], label [[LOOP]], label [[LOOP_EXIT]]
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; CHECK: loop.exit:
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; CHECK-NEXT: call void @use(i1 [[C_PHI]])
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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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entry:
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%c.0 = icmp uge i8 %x, 10
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br i1 %c.0, label %loop, label %exit
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loop:
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%iv = phi i8 [ 0, %entry ], [ %iv.next, %loop.latch ]
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%c.phi = phi i1 [ false, %entry ], [ %t.1, %loop.latch ]
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br i1 %c, label %loop.latch, label %loop.exit
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loop.latch:
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%t.1 = icmp uge i8 %x, 8
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call void @use(i1 %t.1)
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%iv.next = add i8 %iv, 1
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%ec = icmp ult i8 %iv.next, 3
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br i1 %ec, label %loop, label %loop.exit
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loop.exit:
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call void @use(i1 %c.phi)
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br label %exit
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exit:
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ret void
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}
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define i1 @test_if_then_1(i8 %x) {
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; CHECK-LABEL: @test_if_then_1(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[CMP1:%.*]] = icmp sgt i8 [[X:%.*]], 1
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; CHECK-NEXT: br i1 [[CMP1]], label [[IF:%.*]], label [[JOIN:%.*]]
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; CHECK: if:
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; CHECK-NEXT: br label [[JOIN]]
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; CHECK: join:
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; CHECK-NEXT: [[PHI:%.*]] = phi i1 [ true, [[IF]] ], [ false, [[ENTRY:%.*]] ]
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; CHECK-NEXT: ret i1 [[PHI]]
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;
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entry:
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%cmp1 = icmp sgt i8 %x, 1
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br i1 %cmp1, label %if, label %join
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if:
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%cmp2 = icmp sgt i8 %x, 0
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br label %join
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join:
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%phi = phi i1 [ %cmp2, %if ], [ false, %entry ]
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ret i1 %phi
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}
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define i1 @test_if_then_2(i1 %c, i8 %x) {
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; CHECK-LABEL: @test_if_then_2(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br i1 [[C:%.*]], label [[IF:%.*]], label [[JOIN:%.*]]
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; CHECK: if:
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; CHECK-NEXT: [[CMP1:%.*]] = icmp sgt i8 [[X:%.*]], 1
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; CHECK-NEXT: call void @llvm.assume(i1 [[CMP1]])
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; CHECK-NEXT: br label [[JOIN]]
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; CHECK: join:
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; CHECK-NEXT: [[PHI:%.*]] = phi i1 [ true, [[IF]] ], [ false, [[ENTRY:%.*]] ]
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; CHECK-NEXT: ret i1 [[PHI]]
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;
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entry:
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%cmp2 = icmp sgt i8 %x, 0
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br i1 %c, label %if, label %join
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if:
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%cmp1 = icmp sgt i8 %x, 1
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call void @llvm.assume(i1 %cmp1)
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br label %join
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join:
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%phi = phi i1 [ %cmp2, %if ], [ false, %entry ]
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ret i1 %phi
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}
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define i1 @test_if_then_3(i1 %c.0, i8 %x) {
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; CHECK-LABEL: @test_if_then_3(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br i1 [[C_0:%.*]], label [[IF:%.*]], label [[JOIN:%.*]]
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; CHECK: if:
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; CHECK-NEXT: [[CMP1:%.*]] = icmp sgt i8 [[X:%.*]], 1
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; CHECK-NEXT: [[CMP2:%.*]] = icmp sgt i8 [[X]], 1
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; CHECK-NEXT: br i1 [[CMP1]], label [[THEN_1:%.*]], label [[JOIN]]
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; CHECK: then.1:
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; CHECK-NEXT: br label [[JOIN]]
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; CHECK: join:
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; CHECK-NEXT: [[PHI:%.*]] = phi i1 [ [[CMP2]], [[IF]] ], [ true, [[THEN_1]] ], [ false, [[ENTRY:%.*]] ]
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; CHECK-NEXT: ret i1 [[PHI]]
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;
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entry:
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br i1 %c.0, label %if, label %join
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if:
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%cmp1 = icmp sgt i8 %x, 1
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%cmp2 = icmp sgt i8 %x, 1
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br i1 %cmp1, label %then.1, label %join
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then.1:
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br label %join
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join:
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%phi = phi i1 [ %cmp2, %if ], [ %cmp2, %then.1 ], [ false, %entry ]
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ret i1 %phi
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}
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define i1 @test_if_then_4(i1 %c.0, i8 %x) {
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; CHECK-LABEL: @test_if_then_4(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br i1 [[C_0:%.*]], label [[IF:%.*]], label [[JOIN:%.*]]
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; CHECK: if:
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; CHECK-NEXT: [[CMP1:%.*]] = icmp sgt i8 [[X:%.*]], 1
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; CHECK-NEXT: br i1 [[CMP1]], label [[THEN_1:%.*]], label [[ELSE_1:%.*]]
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; CHECK: then.1:
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; CHECK-NEXT: br label [[JOIN]]
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; CHECK: else.1:
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; CHECK-NEXT: br label [[JOIN]]
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; CHECK: join:
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; CHECK-NEXT: [[PHI:%.*]] = phi i1 [ false, [[ELSE_1]] ], [ true, [[THEN_1]] ], [ false, [[ENTRY:%.*]] ]
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; CHECK-NEXT: ret i1 [[PHI]]
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;
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entry:
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br i1 %c.0, label %if, label %join
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if:
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%cmp1 = icmp sgt i8 %x, 1
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%cmp2 = icmp sgt i8 %x, 1
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br i1 %cmp1, label %then.1, label %else.1
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then.1:
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br label %join
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else.1:
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br label %join
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join:
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%phi = phi i1 [ %cmp2, %else.1 ], [ %cmp2, %then.1 ], [ false, %entry ]
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ret i1 %phi
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}
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