| Sanjay Patel | 20f02b2 | 2016-08-29 14:57:53 +0000 | [diff] [blame^] | 1 | ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| 2 | ; RUN: opt < %s -simplifycfg -S | FileCheck %s |
| 3 | |
| 4 | @G = extern_weak global i32 |
| 5 | |
| 6 | ; PR3354 |
| 7 | ; Do not merge bb1 into the entry block, it might trap. |
| 8 | |
| 9 | define i32 @admiral(i32 %a, i32 %b) { |
| 10 | ; CHECK-LABEL: @admiral( |
| 11 | ; CHECK-NEXT: [[C:%.*]] = icmp sle i32 %a, %b |
| 12 | ; CHECK-NEXT: br i1 [[C]], label %bb2, label %bb1 |
| 13 | ; CHECK: bb1: |
| 14 | ; CHECK-NEXT: [[D:%.*]] = icmp sgt i32 sdiv (i32 -32768, i32 ptrtoint (i32* @G to i32)), 0 |
| 15 | ; CHECK-NEXT: [[DOT:%.*]] = select i1 [[D]], i32 927, i32 42 |
| 16 | ; CHECK-NEXT: br label %bb2 |
| 17 | ; CHECK: bb2: |
| 18 | ; CHECK-NEXT: [[MERGE:%.*]] = phi i32 [ 42, %0 ], [ [[DOT]], %bb1 ] |
| 19 | ; CHECK-NEXT: ret i32 [[MERGE]] |
| 20 | ; |
| 21 | %c = icmp sle i32 %a, %b |
| 22 | br i1 %c, label %bb2, label %bb1 |
| 23 | bb1: |
| 24 | %d = icmp sgt i32 sdiv (i32 -32768, i32 ptrtoint (i32* @G to i32)), 0 |
| 25 | br i1 %d, label %bb6, label %bb2 |
| 26 | bb2: |
| 27 | ret i32 42 |
| 28 | bb6: |
| 29 | ret i32 927 |
| 30 | } |
| 31 | |
| 32 | define i32 @ackbar(i1 %c) { |
| 33 | ; CHECK-LABEL: @ackbar( |
| 34 | ; CHECK-NEXT: br i1 %c, label %bb5, label %bb6 |
| 35 | ; CHECK: bb5: |
| 36 | ; CHECK-NEXT: [[DOT:%.*]] = select i1 icmp sgt (i32 sdiv (i32 32767, i32 ptrtoint (i32* @G to i32)), i32 0), i32 42, i32 927 |
| 37 | ; CHECK-NEXT: br label %bb6 |
| 38 | ; CHECK: bb6: |
| 39 | ; CHECK-NEXT: [[MERGE:%.*]] = phi i32 [ 42, %0 ], [ [[DOT]], %bb5 ] |
| 40 | ; CHECK-NEXT: ret i32 [[MERGE]] |
| 41 | ; |
| 42 | br i1 %c, label %bb5, label %bb6 |
| 43 | bb5: |
| 44 | br i1 icmp sgt (i32 sdiv (i32 32767, i32 ptrtoint (i32* @G to i32)), i32 0), label %bb6, label %bb7 |
| 45 | bb6: |
| 46 | ret i32 42 |
| 47 | bb7: |
| 48 | ret i32 927 |
| 49 | } |
| 50 | |
| 51 | ; FIXME: FP ops don't trap by default, so this is safe to hoist. |
| 52 | |
| 53 | define i32 @tarp(i1 %c) { |
| 54 | ; CHECK-LABEL: @tarp( |
| 55 | ; CHECK-NEXT: br i1 %c, label %bb8, label %bb9 |
| 56 | ; CHECK: bb8: |
| 57 | ; CHECK-NEXT: [[DOT:%.*]] = select i1 fcmp oeq (float fdiv (float 3.000000e+00, float sitofp (i32 ptrtoint (i32* @G to i32) to float)), float 1.000000e+00), i32 42, i32 927 |
| 58 | ; CHECK-NEXT: br label %bb9 |
| 59 | ; CHECK: bb9: |
| 60 | ; CHECK-NEXT: [[MERGE:%.*]] = phi i32 [ 42, %0 ], [ [[DOT]], %bb8 ] |
| 61 | ; CHECK-NEXT: ret i32 [[MERGE]] |
| 62 | ; |
| 63 | br i1 %c, label %bb8, label %bb9 |
| 64 | bb8: |
| 65 | br i1 fcmp oeq (float fdiv (float 3.0, float sitofp (i32 ptrtoint (i32* @G to i32) to float)), float 1.0), label %bb9, label %bb10 |
| 66 | bb9: |
| 67 | ret i32 42 |
| 68 | bb10: |
| 69 | ret i32 927 |
| 70 | } |