| ; RUN: opt -simplifycfg -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" |
| |
| ; CHECK-LABEL: define i3 @coveredswitch_test( |
| ; CHECK: entry: |
| ; CHECK-NEXT: sub i3 %input, -4 |
| ; CHECK-NEXT: zext i3 %switch.tableidx to i24 |
| ; CHECK-NEXT: mul i24 %switch.cast, 3 |
| ; CHECK-NEXT: lshr i24 7507338, %switch.shiftamt |
| ; CHECK-NEXT: trunc i24 %switch.downshift to i3 |
| ; CHECK-NEXT: ret i3 %switch.masked |
| |
| define i3 @coveredswitch_test(i3 %input) { |
| 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 |
| } |
