| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 3 |
| ; RUN: opt -S -passes='require<profile-summary>,function(codegenprepare)' -mtriple=x86_64-unknown-unknown < %s | FileCheck %s |
| |
| ; Make sure the nneg flag is dropped when lshr and zext are interchanged. |
| define i8 @get(ptr %box, i32 %in) { |
| ; CHECK-LABEL: define i8 @get( |
| ; CHECK-SAME: ptr [[BOX:%.*]], i32 [[IN:%.*]]) { |
| ; CHECK-NEXT: [[PROMOTED:%.*]] = zext i32 [[IN]] to i64 |
| ; CHECK-NEXT: [[SHR:%.*]] = lshr i64 [[PROMOTED]], 24 |
| ; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i8, ptr [[BOX]], i64 [[SHR]] |
| ; CHECK-NEXT: [[RES:%.*]] = load i8, ptr [[ARRAYIDX]], align 1 |
| ; CHECK-NEXT: ret i8 [[RES]] |
| ; |
| %shr = lshr i32 %in, 24 |
| %idxprom = zext nneg i32 %shr to i64 |
| %arrayidx = getelementptr inbounds i8, ptr %box, i64 %idxprom |
| %res = load i8, ptr %arrayidx, align 1 |
| ret i8 %res |
| } |
