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