1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5 2; RUN: opt < %s -passes=reassociate,instcombine -S | FileCheck %s 3 4; With shl->mul reassociation, we can see that this is (shl A, 9) * A 5define i32 @test(i32 %A) { 6; CHECK-LABEL: define i32 @test( 7; CHECK-SAME: i32 [[A:%.*]]) { 8; CHECK-NEXT: [[Y:%.*]] = shl i32 [[A]], 9 9; CHECK-NEXT: [[Z:%.*]] = mul i32 [[Y]], [[A]] 10; CHECK-NEXT: ret i32 [[Z]] 11; 12 %X = shl i32 %A, 5 ; <i32> [#uses=1] 13 %Y = shl i32 %A, 4 ; <i32> [#uses=1] 14 %Z = mul i32 %Y, %X ; <i32> [#uses=1] 15 ret i32 %Z 16} 17 18