| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -instcombine -S < %s | FileCheck %s |
| |
| define zeroext i1 @switch_ob_one_two_cases(i32 %arg) { |
| ; CHECK-LABEL: @switch_ob_one_two_cases( |
| ; CHECK-NEXT: bb: |
| ; CHECK-NEXT: [[TMP0:%.*]] = and i32 [[ARG:%.*]], -3 |
| ; CHECK-NEXT: [[TMP1:%.*]] = icmp eq i32 [[TMP0]], 0 |
| ; CHECK-NEXT: ret i1 [[TMP1]] |
| ; |
| bb: |
| switch i32 %arg, label %bb1 [ |
| i32 0, label %bb2 |
| i32 2, label %bb2 |
| ] |
| |
| bb1: |
| br label %bb2 |
| |
| bb2: |
| %i = phi i1 [ false, %bb1 ], [ true, %bb ], [ true, %bb ] |
| ret i1 %i |
| } |
| |
| define zeroext i1 @switch_ob_one_two_cases2(i32 %arg) { |
| ; CHECK-LABEL: @switch_ob_one_two_cases2( |
| ; CHECK-NEXT: [[I:%.*]] = icmp eq i32 [[ARG:%.*]], 7 |
| ; CHECK-NEXT: [[I1:%.*]] = icmp eq i32 [[ARG]], 11 |
| ; CHECK-NEXT: [[I2:%.*]] = or i1 [[I]], [[I1]] |
| ; CHECK-NEXT: ret i1 [[I2]] |
| ; |
| %i = icmp eq i32 %arg, 7 |
| %i1 = icmp eq i32 %arg, 11 |
| %i2 = or i1 %i, %i1 |
| ret i1 %i2 |
| } |