| Akira Hatanaka | 5c221ef | 2014-10-16 06:00:46 +0000 | [diff] [blame^] | 1 | ; RUN: opt < %s -instcombine -S | FileCheck %s |
| 2 | |
| 3 | target datalayout = "e-m:o-p:32:32-f64:32:64-v64:32:64-v128:32:128-a:0:32-n32-S32" |
| 4 | |
| 5 | ; CHECK-LABEL: define i32 @positive1 |
| 6 | ; CHECK: switch i32 |
| 7 | ; CHECK: i32 10, label |
| 8 | ; CHECK: i32 100, label |
| 9 | ; CHECK: i32 1001, label |
| 10 | |
| 11 | define i32 @positive1(i64 %a) { |
| 12 | entry: |
| 13 | %and = and i64 %a, 4294967295 |
| 14 | switch i64 %and, label %sw.default [ |
| 15 | i64 10, label %return |
| 16 | i64 100, label %sw.bb1 |
| 17 | i64 1001, label %sw.bb2 |
| 18 | ] |
| 19 | |
| 20 | sw.bb1: |
| 21 | br label %return |
| 22 | |
| 23 | sw.bb2: |
| 24 | br label %return |
| 25 | |
| 26 | sw.default: |
| 27 | br label %return |
| 28 | |
| 29 | return: |
| 30 | %retval.0 = phi i32 [ 24, %sw.default ], [ 123, %sw.bb2 ], [ 213, %sw.bb1 ], [ 231, %entry ] |
| 31 | ret i32 %retval.0 |
| 32 | } |
| 33 | |
| 34 | ; CHECK-LABEL: define i32 @negative1 |
| 35 | ; CHECK: switch i32 |
| 36 | ; CHECK: i32 -10, label |
| 37 | ; CHECK: i32 -100, label |
| 38 | ; CHECK: i32 -1001, label |
| 39 | |
| 40 | define i32 @negative1(i64 %a) { |
| 41 | entry: |
| 42 | %or = or i64 %a, -4294967296 |
| 43 | switch i64 %or, label %sw.default [ |
| 44 | i64 -10, label %return |
| 45 | i64 -100, label %sw.bb1 |
| 46 | i64 -1001, label %sw.bb2 |
| 47 | ] |
| 48 | |
| 49 | sw.bb1: |
| 50 | br label %return |
| 51 | |
| 52 | sw.bb2: |
| 53 | br label %return |
| 54 | |
| 55 | sw.default: |
| 56 | br label %return |
| 57 | |
| 58 | return: |
| 59 | %retval.0 = phi i32 [ 24, %sw.default ], [ 123, %sw.bb2 ], [ 213, %sw.bb1 ], [ 231, %entry ] |
| 60 | ret i32 %retval.0 |
| 61 | } |
| 62 | |
| 63 | ; Make sure truncating a constant int larger than 64-bit doesn't trigger an |
| 64 | ; assertion. |
| 65 | |
| 66 | ; CHECK-LABEL: define i32 @trunc72to68 |
| 67 | ; CHECK: switch i68 |
| 68 | ; CHECK: i68 10, label |
| 69 | ; CHECK: i68 100, label |
| 70 | ; CHECK: i68 1001, label |
| 71 | |
| 72 | define i32 @trunc72to68(i72 %a) { |
| 73 | entry: |
| 74 | %and = and i72 %a, 295147905179352825855 |
| 75 | switch i72 %and, label %sw.default [ |
| 76 | i72 10, label %return |
| 77 | i72 100, label %sw.bb1 |
| 78 | i72 1001, label %sw.bb2 |
| 79 | ] |
| 80 | |
| 81 | sw.bb1: |
| 82 | br label %return |
| 83 | |
| 84 | sw.bb2: |
| 85 | br label %return |
| 86 | |
| 87 | sw.default: |
| 88 | br label %return |
| 89 | |
| 90 | return: |
| 91 | %retval.0 = phi i32 [ 24, %sw.default ], [ 123, %sw.bb2 ], [ 213, %sw.bb1 ], [ 231, %entry ] |
| 92 | ret i32 %retval.0 |
| 93 | } |