| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt < %s -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S | FileCheck %s |
| |
| @G = extern_weak global i32 |
| |
| ; PR3354 |
| ; Do not merge bb1 into the entry block, it might trap. |
| |
| define i32 @admiral(i32 %a, i32 %b) { |
| ; CHECK-LABEL: @admiral( |
| ; CHECK-NEXT: [[C:%.*]] = icmp sle i32 [[A:%.*]], [[B:%.*]] |
| ; CHECK-NEXT: br i1 [[C]], label [[COMMON_RET:%.*]], label [[BB1:%.*]] |
| ; CHECK: bb1: |
| ; CHECK-NEXT: [[D:%.*]] = icmp sgt i32 sdiv (i32 -32768, i32 ptrtoint (i32* @G to i32)), 0 |
| ; CHECK-NEXT: [[SPEC_SELECT:%.*]] = select i1 [[D]], i32 927, i32 42 |
| ; CHECK-NEXT: br label [[COMMON_RET]] |
| ; CHECK: common.ret: |
| ; CHECK-NEXT: [[COMMON_RET_OP:%.*]] = phi i32 [ 42, [[TMP0:%.*]] ], [ [[SPEC_SELECT]], [[BB1]] ] |
| ; CHECK-NEXT: ret i32 [[COMMON_RET_OP]] |
| ; |
| %c = icmp sle i32 %a, %b |
| br i1 %c, label %bb2, label %bb1 |
| bb1: |
| %d = icmp sgt i32 sdiv (i32 -32768, i32 ptrtoint (i32* @G to i32)), 0 |
| br i1 %d, label %bb6, label %bb2 |
| bb2: |
| ret i32 42 |
| bb6: |
| ret i32 927 |
| } |
| |
| define i32 @ackbar(i1 %c) { |
| ; CHECK-LABEL: @ackbar( |
| ; CHECK-NEXT: br i1 [[C:%.*]], label [[BB5:%.*]], label [[COMMON_RET:%.*]] |
| ; CHECK: bb5: |
| ; CHECK-NEXT: [[SPEC_SELECT:%.*]] = select i1 icmp sgt (i32 sdiv (i32 32767, i32 ptrtoint (i32* @G to i32)), i32 0), i32 42, i32 927 |
| ; CHECK-NEXT: br label [[COMMON_RET]] |
| ; CHECK: common.ret: |
| ; CHECK-NEXT: [[COMMON_RET_OP:%.*]] = phi i32 [ 42, [[TMP0:%.*]] ], [ [[SPEC_SELECT]], [[BB5]] ] |
| ; CHECK-NEXT: ret i32 [[COMMON_RET_OP]] |
| ; |
| br i1 %c, label %bb5, label %bb6 |
| bb5: |
| br i1 icmp sgt (i32 sdiv (i32 32767, i32 ptrtoint (i32* @G to i32)), i32 0), label %bb6, label %bb7 |
| bb6: |
| ret i32 42 |
| bb7: |
| ret i32 927 |
| } |
| |
| ; FP ops don't trap by default, so this is safe to hoist. |
| |
| define i32 @tarp(i1 %c) { |
| ; CHECK-LABEL: @tarp( |
| ; CHECK-NEXT: common.ret: |
| ; CHECK-NEXT: [[C_NOT:%.*]] = xor i1 [[C:%.*]], true |
| ; CHECK-NEXT: [[BRMERGE:%.*]] = or i1 [[C_NOT]], fcmp oeq (float fdiv (float 3.000000e+00, float sitofp (i32 ptrtoint (i32* @G to i32) to float)), float 1.000000e+00) |
| ; CHECK-NEXT: [[COMMON_RET_OP:%.*]] = select i1 [[BRMERGE]], i32 42, i32 927 |
| ; CHECK-NEXT: ret i32 [[COMMON_RET_OP]] |
| ; |
| br i1 %c, label %bb8, label %bb9 |
| bb8: |
| 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 |
| bb9: |
| ret i32 42 |
| bb10: |
| ret i32 927 |
| } |