133 lines
4.3 KiB
LLVM
133 lines
4.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -passes=indvars -S < %s | FileCheck %s
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declare i1 @cond()
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define void @test_01(i32 %x) {
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; CHECK-LABEL: @test_01(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br i1 true, label [[LOOP_1_PREHEADER:%.*]], label [[LOOP_2_PREHEADER:%.*]]
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; CHECK: loop.2.preheader:
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; CHECK-NEXT: br label [[LOOP_2:%.*]]
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; CHECK: loop.1.preheader:
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; CHECK-NEXT: br label [[LOOP_1:%.*]]
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; CHECK: loop.1:
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; CHECK-NEXT: [[IV_1:%.*]] = phi i32 [ [[IV_NEXT_1:%.*]], [[GUARDED_1:%.*]] ], [ 0, [[LOOP_1_PREHEADER]] ]
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; CHECK-NEXT: [[CHECK_1:%.*]] = icmp slt i32 [[IV_1]], [[X:%.*]]
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; CHECK-NEXT: br i1 [[CHECK_1]], label [[GUARDED_1]], label [[FAIL_LOOPEXIT:%.*]]
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; CHECK: guarded.1:
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; CHECK-NEXT: [[IV_NEXT_1]] = add nuw nsw i32 [[IV_1]], 1
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; CHECK-NEXT: [[LOOP_COND_1:%.*]] = call i1 @cond()
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; CHECK-NEXT: br i1 [[LOOP_COND_1]], label [[LOOP_1]], label [[EXIT_LOOPEXIT:%.*]]
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; CHECK: loop.2:
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; CHECK-NEXT: br i1 true, label [[GUARDED_2:%.*]], label [[FAIL_LOOPEXIT1:%.*]]
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; CHECK: guarded.2:
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; CHECK-NEXT: [[LOOP_COND_2:%.*]] = call i1 @cond()
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; CHECK-NEXT: br i1 [[LOOP_COND_2]], label [[LOOP_2]], label [[EXIT_LOOPEXIT2:%.*]]
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; CHECK: exit.loopexit:
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; CHECK-NEXT: br label [[EXIT:%.*]]
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; CHECK: exit.loopexit2:
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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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; CHECK: fail.loopexit:
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; CHECK-NEXT: br label [[FAIL:%.*]]
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; CHECK: fail.loopexit1:
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; CHECK-NEXT: br label [[FAIL]]
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; CHECK: fail:
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; CHECK-NEXT: unreachable
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;
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entry:
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br i1 true, label %loop.1, label %loop.2
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loop.1:
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%iv.1 = phi i32 [0, %entry], [%iv.next.1, %guarded.1]
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%check.1 = icmp slt i32 %iv.1, %x
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br i1 %check.1, label %guarded.1, label %fail
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guarded.1:
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%iv.next.1 = add i32 %iv.1, 1
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%loop.cond.1 = call i1 @cond()
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br i1 %loop.cond.1, label %loop.1, label %exit
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loop.2:
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%iv.2 = phi i32 [0, %entry], [%iv.next.2, %guarded.2]
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%check.2 = icmp slt i32 %iv.2, %x
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br i1 %check.2, label %guarded.2, label %fail
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guarded.2:
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%iv.next.2 = add i32 %iv.2, 1
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%loop.cond.2 = call i1 @cond()
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br i1 %loop.cond.2, label %loop.2, label %exit
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exit:
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ret void
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fail:
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unreachable
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}
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define void @test_02(i32 %x) {
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; CHECK-LABEL: @test_02(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br i1 false, label [[LOOP_1_PREHEADER:%.*]], label [[LOOP_2_PREHEADER:%.*]]
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; CHECK: loop.2.preheader:
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; CHECK-NEXT: br label [[LOOP_2:%.*]]
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; CHECK: loop.1.preheader:
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; CHECK-NEXT: br label [[LOOP_1:%.*]]
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; CHECK: loop.1:
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; CHECK-NEXT: br i1 true, label [[GUARDED_1:%.*]], label [[FAIL_LOOPEXIT:%.*]]
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; CHECK: guarded.1:
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; CHECK-NEXT: [[LOOP_COND_1:%.*]] = call i1 @cond()
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; CHECK-NEXT: br i1 [[LOOP_COND_1]], label [[LOOP_1]], label [[EXIT_LOOPEXIT:%.*]]
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; CHECK: loop.2:
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; CHECK-NEXT: [[IV_2:%.*]] = phi i32 [ [[IV_NEXT_2:%.*]], [[GUARDED_2:%.*]] ], [ 0, [[LOOP_2_PREHEADER]] ]
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; CHECK-NEXT: [[CHECK_2:%.*]] = icmp slt i32 [[IV_2]], [[X:%.*]]
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; CHECK-NEXT: br i1 [[CHECK_2]], label [[GUARDED_2]], label [[FAIL_LOOPEXIT1:%.*]]
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; CHECK: guarded.2:
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; CHECK-NEXT: [[IV_NEXT_2]] = add nuw nsw i32 [[IV_2]], 1
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; CHECK-NEXT: [[LOOP_COND_2:%.*]] = call i1 @cond()
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; CHECK-NEXT: br i1 [[LOOP_COND_2]], label [[LOOP_2]], label [[EXIT_LOOPEXIT2:%.*]]
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; CHECK: exit.loopexit:
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; CHECK-NEXT: br label [[EXIT:%.*]]
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; CHECK: exit.loopexit2:
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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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; CHECK: fail.loopexit:
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; CHECK-NEXT: br label [[FAIL:%.*]]
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; CHECK: fail.loopexit1:
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; CHECK-NEXT: br label [[FAIL]]
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; CHECK: fail:
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; CHECK-NEXT: unreachable
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;
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entry:
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br i1 false, label %loop.1, label %loop.2
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loop.1:
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%iv.1 = phi i32 [0, %entry], [%iv.next.1, %guarded.1]
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%check.1 = icmp slt i32 %iv.1, %x
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br i1 %check.1, label %guarded.1, label %fail
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guarded.1:
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%iv.next.1 = add i32 %iv.1, 1
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%loop.cond.1 = call i1 @cond()
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br i1 %loop.cond.1, label %loop.1, label %exit
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loop.2:
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%iv.2 = phi i32 [0, %entry], [%iv.next.2, %guarded.2]
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%check.2 = icmp slt i32 %iv.2, %x
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br i1 %check.2, label %guarded.2, label %fail
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guarded.2:
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%iv.next.2 = add i32 %iv.2, 1
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%loop.cond.2 = call i1 @cond()
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br i1 %loop.cond.2, label %loop.2, label %exit
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exit:
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ret void
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fail:
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unreachable
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}
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