| Florian Hahn | 0062441 | 2020-03-21 23:38:37 +0000 | [diff] [blame] | 1 | ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| 2 | ; RUN: opt < %s -sccp -S | FileCheck %s |
| 3 | |
| 4 | ; Test some XOR simplifications / range propagation. |
| 5 | define void@xor1(i1 %cmp) { |
| 6 | ; CHECK-LABEL: @xor1( |
| 7 | ; CHECK-NEXT: entry: |
| 8 | ; CHECK-NEXT: br i1 [[CMP:%.*]], label [[IF_TRUE:%.*]], label [[END:%.*]] |
| 9 | ; CHECK: if.true: |
| 10 | ; CHECK-NEXT: br label [[END]] |
| 11 | ; CHECK: end: |
| 12 | ; CHECK-NEXT: call void @use(i1 true) |
| 13 | ; CHECK-NEXT: call void @use(i1 false) |
| 14 | ; CHECK-NEXT: call void @use(i1 false) |
| 15 | ; CHECK-NEXT: call void @use(i1 true) |
| 16 | ; CHECK-NEXT: ret void |
| 17 | ; |
| 18 | entry: |
| 19 | br i1 %cmp, label %if.true, label %end |
| 20 | |
| 21 | if.true: |
| 22 | br label %end |
| 23 | |
| 24 | end: |
| 25 | %p = phi i32 [ 11, %entry ], [ 11, %if.true] |
| 26 | %xor.1 = xor i32 %p, %p |
| 27 | %c.1 = icmp eq i32 %xor.1, 0 |
| 28 | call void @use(i1 %c.1) |
| 29 | %c.2 = icmp eq i32 %xor.1, 10 |
| 30 | call void @use(i1 %c.2) |
| 31 | %xor.2 = xor i32 %p, 1 |
| 32 | %c.3 = icmp eq i32 %xor.2, 11 |
| 33 | call void @use(i1 %c.3) |
| 34 | %c.4 = icmp eq i32 %xor.2, 10 |
| 35 | call void @use(i1 %c.4) |
| 36 | ret void |
| 37 | } |
| 38 | |
| 39 | declare void @use(i1) |