1; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py 2; RUN: opt < %s "-passes=print<scalar-evolution>" -disable-output 2>&1 | FileCheck %s 3 4define i8 @test(i8 %x, i8 %y) { 5; CHECK-LABEL: 'test' 6; CHECK-NEXT: Classifying expressions for: @test 7; CHECK-NEXT: %udiv = udiv i8 %x, %y 8; CHECK-NEXT: --> (%x /u %y) U: full-set S: full-set 9; CHECK-NEXT: %res = mul i8 %udiv, %y 10; CHECK-NEXT: --> ((%x /u %y) * %y)<nuw> U: full-set S: full-set 11; CHECK-NEXT: Determining loop execution counts for: @test 12; 13 %udiv = udiv i8 %x, %y 14 %res = mul i8 %udiv, %y 15 ret i8 %res 16} 17 18define i8 @test2(i8 %x) { 19; CHECK-LABEL: 'test2' 20; CHECK-NEXT: Classifying expressions for: @test2 21; CHECK-NEXT: %udiv = udiv i8 %x, 2 22; CHECK-NEXT: --> (%x /u 2) U: [0,-128) S: [0,-128) 23; CHECK-NEXT: %res = mul i8 %udiv, 2 24; CHECK-NEXT: --> (2 * (%x /u 2))<nuw> U: [0,-1) S: [-128,127) 25; CHECK-NEXT: Determining loop execution counts for: @test2 26; 27 %udiv = udiv i8 %x, 2 28 %res = mul i8 %udiv, 2 29 ret i8 %res 30} 31 32define i8 @test3(i8 %x) { 33; CHECK-LABEL: 'test3' 34; CHECK-NEXT: Classifying expressions for: @test3 35; CHECK-NEXT: %udiv = udiv i8 %x, -128 36; CHECK-NEXT: --> (%x /u -128) U: [0,2) S: [0,2) 37; CHECK-NEXT: %res = mul i8 %udiv, -128 38; CHECK-NEXT: --> (-128 * (%x /u -128))<nuw><nsw> U: [0,-127) S: [-128,1) 39; CHECK-NEXT: Determining loop execution counts for: @test3 40; 41 %udiv = udiv i8 %x, 128 42 %res = mul i8 %udiv, 128 43 ret i8 %res 44} 45 46define i8 @test4(i8 %x) { 47; CHECK-LABEL: 'test4' 48; CHECK-NEXT: Classifying expressions for: @test4 49; CHECK-NEXT: %udiv = udiv i8 %x, -1 50; CHECK-NEXT: --> (%x /u -1) U: [0,2) S: [0,2) 51; CHECK-NEXT: %res = mul i8 %udiv, -1 52; CHECK-NEXT: --> (-1 * (%x /u -1))<nuw><nsw> U: [-1,1) S: [-1,1) 53; CHECK-NEXT: Determining loop execution counts for: @test4 54; 55 %udiv = udiv i8 %x, 255 56 %res = mul i8 %udiv, 255 57 ret i8 %res 58} 59 60define i8 @test5(i8 %x, i32 %y32) { 61; CHECK-LABEL: 'test5' 62; CHECK-NEXT: Classifying expressions for: @test5 63; CHECK-NEXT: %y = trunc i32 %y32 to i8 64; CHECK-NEXT: --> (trunc i32 %y32 to i8) U: full-set S: full-set 65; CHECK-NEXT: %udiv = udiv i8 %x, %y 66; CHECK-NEXT: --> (%x /u (trunc i32 %y32 to i8)) U: full-set S: full-set 67; CHECK-NEXT: %res = mul i8 %udiv, %y 68; CHECK-NEXT: --> ((trunc i32 %y32 to i8) * (%x /u (trunc i32 %y32 to i8)))<nuw> U: full-set S: full-set 69; CHECK-NEXT: Determining loop execution counts for: @test5 70; 71 %y = trunc i32 %y32 to i8 72 %udiv = udiv i8 %x, %y 73 %res = mul i8 %udiv, %y 74 ret i8 %res 75} 76