37 lines
1.8 KiB
LLVM
37 lines
1.8 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py UTC_ARGS: --version 2
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; RUN: opt < %s -disable-output "-passes=print<scalar-evolution>" 2>&1 | FileCheck %s
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define i64 @test64(i64 %a) {
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; CHECK-LABEL: 'test64'
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; CHECK-NEXT: Classifying expressions for: @test64
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; CHECK-NEXT: %add = shl i64 %a, 8
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; CHECK-NEXT: --> (256 * %a) U: [0,-255) S: [-9223372036854775808,9223372036854775553)
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; CHECK-NEXT: %shl = add i64 %add, 256
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; CHECK-NEXT: --> (256 + (256 * %a)) U: [0,-255) S: [-9223372036854775808,9223372036854775553)
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; CHECK-NEXT: %ashr = ashr exact i64 %shl, 8
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; CHECK-NEXT: --> (sext i56 (1 + (trunc i64 %a to i56)) to i64) U: [-36028797018963968,36028797018963968) S: [-36028797018963968,36028797018963968)
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; CHECK-NEXT: Determining loop execution counts for: @test64
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;
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%add = shl i64 %a, 8
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%shl = add i64 %add, 256
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%ashr = ashr exact i64 %shl, 8
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ret i64 %ashr
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}
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define i128 @test128(i128 %a) {
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; CHECK-LABEL: 'test128'
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; CHECK-NEXT: Classifying expressions for: @test128
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; CHECK-NEXT: %shl = shl i128 %a, 4
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; CHECK-NEXT: --> (16 * %a) U: [0,-15) S: [-170141183460469231731687303715884105728,170141183460469231731687303715884105713)
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; CHECK-NEXT: %add = add i128 %shl, -55
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; CHECK-NEXT: --> (-55 + (16 * %a)) U: [-55,-70) S: [170141183460469231731687303715884105673,170141183460469231731687303715884105658)
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; CHECK-NEXT: %ashr = ashr i128 %add, 4
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; CHECK-NEXT: --> (sext i124 (-4 + (trunc i128 %a to i124)) to i128) U: [-10633823966279326983230456482242756608,10633823966279326983230456482242756608) S: [-10633823966279326983230456482242756608,10633823966279326983230456482242756608)
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; CHECK-NEXT: Determining loop execution counts for: @test128
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;
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%shl = shl i128 %a, 4
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%add = add i128 %shl, -55
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%ashr = ashr i128 %add, 4
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ret i128 %ashr
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}
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