diff --git a/llvm/test/Analysis/ScalarEvolution/mul.ll b/llvm/test/Analysis/ScalarEvolution/mul.ll new file mode 100644 index 0000000000000..7505b6a8839cf --- /dev/null +++ b/llvm/test/Analysis/ScalarEvolution/mul.ll @@ -0,0 +1,58 @@ +; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py +; RUN: opt < %s "-passes=print" -disable-output 2>&1 | FileCheck %s + +define i8 @test(i8 %x, i8 %y) { +; CHECK-LABEL: 'test' +; CHECK-NEXT: Classifying expressions for: @test +; CHECK-NEXT: %udiv = udiv i8 %x, %y +; CHECK-NEXT: --> (%x /u %y) U: full-set S: full-set +; CHECK-NEXT: %res = mul i8 %udiv, %y +; CHECK-NEXT: --> ((%x /u %y) * %y) U: full-set S: full-set +; CHECK-NEXT: Determining loop execution counts for: @test +; + %udiv = udiv i8 %x, %y + %res = mul i8 %udiv, %y + ret i8 %res +} + +define i8 @test2(i8 %x) { +; CHECK-LABEL: 'test2' +; CHECK-NEXT: Classifying expressions for: @test2 +; CHECK-NEXT: %udiv = udiv i8 %x, 2 +; CHECK-NEXT: --> (%x /u 2) U: [0,-128) S: [0,-128) +; CHECK-NEXT: %res = mul i8 %udiv, 2 +; CHECK-NEXT: --> (2 * (%x /u 2)) U: [0,-1) S: [-128,127) +; CHECK-NEXT: Determining loop execution counts for: @test2 +; + %udiv = udiv i8 %x, 2 + %res = mul i8 %udiv, 2 + ret i8 %res +} + +define i8 @test3(i8 %x) { +; CHECK-LABEL: 'test3' +; CHECK-NEXT: Classifying expressions for: @test3 +; CHECK-NEXT: %udiv = udiv i8 %x, -128 +; CHECK-NEXT: --> (%x /u -128) U: [0,2) S: [0,2) +; CHECK-NEXT: %res = mul i8 %udiv, -128 +; CHECK-NEXT: --> (-128 * (%x /u -128)) U: [0,-127) S: [-128,1) +; CHECK-NEXT: Determining loop execution counts for: @test3 +; + %udiv = udiv i8 %x, 128 + %res = mul i8 %udiv, 128 + ret i8 %res +} + +define i8 @test4(i8 %x) { +; CHECK-LABEL: 'test4' +; CHECK-NEXT: Classifying expressions for: @test4 +; CHECK-NEXT: %udiv = udiv i8 %x, -1 +; CHECK-NEXT: --> (%x /u -1) U: [0,2) S: [0,2) +; CHECK-NEXT: %res = mul i8 %udiv, -1 +; CHECK-NEXT: --> (-1 * (%x /u -1)) U: [-1,1) S: [-1,1) +; CHECK-NEXT: Determining loop execution counts for: @test4 +; + %udiv = udiv i8 %x, 255 + %res = mul i8 %udiv, 255 + ret i8 %res +}