80 lines
2.4 KiB
LLVM
80 lines
2.4 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py
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; RUN: opt -analyze -scalar-evolution %s -enable-new-pm=0 | FileCheck %s
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; RUN: opt -passes='print<scalar-evolution>' -disable-output %s 2>&1 | FileCheck %s
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; Tests for PR47904.
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define void @test_trip_multiple_4(i32 %num) {
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; CHECK-LABEL: @test_trip_multiple_4
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; CHECK: Loop %for.body: backedge-taken count is (-1 + %num)
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; CHECK-NEXT: Loop %for.body: max backedge-taken count is -2
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; CHECK-NEXT: Loop %for.body: Predicated backedge-taken count is (-1 + %num)
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; CHECK: Loop %for.body: Trip multiple is 4
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;
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entry:
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%u = urem i32 %num, 4
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%cmp = icmp eq i32 %u, 0
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tail call void @llvm.assume(i1 %cmp)
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%cmp.1 = icmp uge i32 %num, 4
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tail call void @llvm.assume(i1 %cmp.1)
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br label %for.body
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for.body:
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%i.010 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
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%inc = add nuw nsw i32 %i.010, 1
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%cmp2 = icmp ult i32 %inc, %num
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br i1 %cmp2, label %for.body, label %exit
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exit:
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ret void
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}
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define void @test_trip_multiple_5(i32 %num) {
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; CHECK-LABEL: @test_trip_multiple_5
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; CHECK: Loop %for.body: backedge-taken count is (-1 + %num)
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; CHECK-NEXT: Loop %for.body: max backedge-taken count is -2
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; CHECK-NEXT: Loop %for.body: Predicated backedge-taken count is (-1 + %num)
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; CHECK: Loop %for.body: Trip multiple is 1
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;
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entry:
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%u = urem i32 %num, 5
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%cmp = icmp eq i32 %u, 0
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tail call void @llvm.assume(i1 %cmp)
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%cmp.1 = icmp uge i32 %num, 5
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tail call void @llvm.assume(i1 %cmp.1)
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br label %for.body
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for.body:
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%i.010 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
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%inc = add nuw nsw i32 %i.010, 1
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%cmp2 = icmp ult i32 %inc, %num
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br i1 %cmp2, label %for.body, label %exit
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exit:
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ret void
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}
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define void @test_trunc_operand_larger_than_urem_expr(i64 %N) {
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; CHECK-LABEL: @test_trunc_operand_larger_than_urem_expr
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; CHECK: Loop %for.body: backedge-taken count is (-1 + %N)
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; CHECK-NEXT: Loop %for.body: max backedge-taken count is -1
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; CHECK-NEXT: Loop %for.body: Predicated backedge-taken count is (-1 + %N)
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;
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entry:
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%conv = trunc i64 %N to i32
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%and = and i32 %conv, 1
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%cmp.pre = icmp eq i32 %and, 0
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br i1 %cmp.pre, label %for.body, label %exit
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for.body:
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%iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]
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%iv.next = add nuw nsw i64 %iv, 1
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%cmp.1 = icmp ne i64 %iv.next, %N
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br i1 %cmp.1, label %for.body, label %exit
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exit:
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ret void
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}
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declare void @llvm.assume(i1)
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