| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -switch-to-lookup -S %s | FileCheck %s |
| ; RUN: opt -passes='simplify-cfg<switch-to-lookup>' -S %s | FileCheck %s |
| ; rdar://15268442 |
| |
| target datalayout = "e-p:64:64:64-S128-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f16:16:16-f32:32:32-f64:64:64-f128:128:128-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64" |
| target triple = "x86_64-apple-darwin12.0.0" |
| |
| define i3 @coveredswitch_test(i3 %input) { |
| ; CHECK-LABEL: @coveredswitch_test( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[SWITCH_TABLEIDX:%.*]] = sub i3 [[INPUT:%.*]], -4 |
| ; CHECK-NEXT: [[SWITCH_CAST:%.*]] = zext i3 [[SWITCH_TABLEIDX]] to i24 |
| ; CHECK-NEXT: [[SWITCH_SHIFTAMT:%.*]] = mul i24 [[SWITCH_CAST]], 3 |
| ; CHECK-NEXT: [[SWITCH_DOWNSHIFT:%.*]] = lshr i24 7507338, [[SWITCH_SHIFTAMT]] |
| ; CHECK-NEXT: [[SWITCH_MASKED:%.*]] = trunc i24 [[SWITCH_DOWNSHIFT]] to i3 |
| ; CHECK-NEXT: ret i3 [[SWITCH_MASKED]] |
| ; |
| entry: |
| switch i3 %input, label %bb8 [ |
| i3 0, label %bb7 |
| i3 1, label %bb |
| i3 2, label %bb3 |
| i3 3, label %bb4 |
| i3 4, label %bb5 |
| i3 5, label %bb6 |
| ] |
| |
| bb: ; preds = %entry |
| br label %bb8 |
| |
| bb3: ; preds = %entry |
| br label %bb8 |
| |
| bb4: ; preds = %entry |
| br label %bb8 |
| |
| bb5: ; preds = %entry |
| br label %bb8 |
| |
| bb6: ; preds = %entry |
| br label %bb8 |
| |
| bb7: ; preds = %entry |
| br label %bb8 |
| |
| bb8: ; preds = %bb7, %bb6, %bb5, %bb4, %bb3, %bb, %entry |
| %result = phi i3 [ 0, %bb7 ], [ 1, %bb6 ], [ 2, %bb5 ], [ 3, %bb4 ], [ 4, %bb3 ], [ 5, %bb ], [ 6, %entry ] |
| ret i3 %result |
| } |
