derek.holloway
7502bf64a4
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73 lines
3.4 KiB
LLVM
73 lines
3.4 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py UTC_ARGS: --version 5
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; RUN: opt -passes='print<scalar-evolution>' -disable-output %s 2>&1 | FileCheck %s
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declare void @foo()
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; Tests with multiple guards for the same value and different values.
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define void @test_guard_order_b_then_c_and_d(ptr %a, ptr %b, ptr %c, ptr %d) {
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; CHECK-LABEL: 'test_guard_order_b_then_c_and_d'
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; CHECK-NEXT: Classifying expressions for: @test_guard_order_b_then_c_and_d
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; CHECK-NEXT: %iv = phi ptr [ %a, %entry ], [ %iv.next, %loop ]
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; CHECK-NEXT: --> {%a,+,1}<%loop> U: full-set S: full-set Exits: (-1 + (-1 * (ptrtoint ptr %a to i64)) + (ptrtoint ptr %b to i64) + %a) LoopDispositions: { %loop: Computable }
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; CHECK-NEXT: %iv.next = getelementptr i8, ptr %iv, i64 1
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; CHECK-NEXT: --> {(1 + %a),+,1}<%loop> U: full-set S: full-set Exits: ((-1 * (ptrtoint ptr %a to i64)) + (ptrtoint ptr %b to i64) + %a) LoopDispositions: { %loop: Computable }
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; CHECK-NEXT: Determining loop execution counts for: @test_guard_order_b_then_c_and_d
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; CHECK-NEXT: Loop %loop: backedge-taken count is (-1 + (-1 * (ptrtoint ptr %a to i64)) + (ptrtoint ptr %b to i64))
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; CHECK-NEXT: Loop %loop: constant max backedge-taken count is i64 -2
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; CHECK-NEXT: Loop %loop: symbolic max backedge-taken count is (-1 + (-1 * (ptrtoint ptr %a to i64)) + (ptrtoint ptr %b to i64))
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; CHECK-NEXT: Loop %loop: Trip multiple is 1
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;
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entry:
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%cmp.eq.b = icmp ne ptr %a, %b
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%cmp.eq.c = icmp ne ptr %a, %c
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%cmp.eq.d = icmp ne ptr %b, %d
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call void @llvm.assume(i1 %cmp.eq.b)
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call void @llvm.assume(i1 %cmp.eq.c)
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call void @llvm.assume(i1 %cmp.eq.d)
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br label %loop
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loop:
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%iv = phi ptr [ %a, %entry ], [ %iv.next, %loop ]
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%iv.next = getelementptr i8, ptr %iv, i64 1
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call void @foo()
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%ec = icmp eq ptr %iv.next, %b
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br i1 %ec, label %exit, label %loop
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exit:
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ret void
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}
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define void @test_guard_order_d_then_c_and_b(ptr %a, ptr %b, ptr %c, ptr %d) {
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; CHECK-LABEL: 'test_guard_order_d_then_c_and_b'
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; CHECK-NEXT: Classifying expressions for: @test_guard_order_d_then_c_and_b
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; CHECK-NEXT: %iv = phi ptr [ %a, %entry ], [ %iv.next, %loop ]
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; CHECK-NEXT: --> {%a,+,1}<%loop> U: full-set S: full-set Exits: (-1 + (-1 * (ptrtoint ptr %a to i64)) + (ptrtoint ptr %b to i64) + %a) LoopDispositions: { %loop: Computable }
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; CHECK-NEXT: %iv.next = getelementptr i8, ptr %iv, i64 1
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; CHECK-NEXT: --> {(1 + %a),+,1}<%loop> U: full-set S: full-set Exits: ((-1 * (ptrtoint ptr %a to i64)) + (ptrtoint ptr %b to i64) + %a) LoopDispositions: { %loop: Computable }
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; CHECK-NEXT: Determining loop execution counts for: @test_guard_order_d_then_c_and_b
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; CHECK-NEXT: Loop %loop: backedge-taken count is (-1 + (-1 * (ptrtoint ptr %a to i64)) + (ptrtoint ptr %b to i64))
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; CHECK-NEXT: Loop %loop: constant max backedge-taken count is i64 -2
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; CHECK-NEXT: Loop %loop: symbolic max backedge-taken count is (-1 + (-1 * (ptrtoint ptr %a to i64)) + (ptrtoint ptr %b to i64))
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; CHECK-NEXT: Loop %loop: Trip multiple is 1
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;
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entry:
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%cmp.eq.b = icmp ne ptr %a, %b
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%cmp.eq.c = icmp ne ptr %a, %c
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%cmp.eq.d = icmp ne ptr %b, %d
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call void @llvm.assume(i1 %cmp.eq.d)
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call void @llvm.assume(i1 %cmp.eq.c)
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call void @llvm.assume(i1 %cmp.eq.b)
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br label %loop
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loop:
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%iv = phi ptr [ %a, %entry ], [ %iv.next, %loop ]
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%iv.next = getelementptr i8, ptr %iv, i64 1
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call void @foo()
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%ec = icmp eq ptr %iv.next, %b
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br i1 %ec, label %exit, label %loop
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exit:
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ret void
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}
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