| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt -tut-simplifycfg -tut-simplifycfg-version=v1 -enable-new-pm=0 -S < %s | FileCheck %s |
| ; RUN: opt -tut-simplifycfg -tut-simplifycfg-version=v2 -enable-new-pm=0 -S < %s | FileCheck %s |
| ; RUN: opt -tut-simplifycfg -tut-simplifycfg-version=v3 -enable-new-pm=0 -S < %s | FileCheck %s |
| |
| define i32 @remove_dead_blocks() { |
| ; CHECK-LABEL: @remove_dead_blocks( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: ret i32 1 |
| ; CHECK-NEXT: } |
| ; |
| entry: |
| ret i32 1 |
| |
| bb.1: |
| ret i32 2 |
| |
| bb.2: |
| ret i32 3 |
| } |
| |
| define i32 @simp1() { |
| ; CHECK-LABEL: @simp1( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: ret i32 1 |
| ; CHECK: bb.1: |
| ; CHECK-NEXT: ret i32 2 |
| ; CHECK-NEXT: } |
| ; |
| entry: |
| ret i32 1 |
| |
| bb.1: |
| ret i32 2 |
| |
| bb.2: |
| br i1 undef, label %bb.1, label %bb.3 |
| |
| bb.3: |
| ret i32 3 |
| } |
| |
| define i32 @remove_dead_block_with_phi() { |
| ; CHECK-LABEL: @remove_dead_block_with_phi( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: br label [[BB_2:%.*]] |
| ; CHECK: bb.2: |
| ; CHECK-NEXT: ret i32 1 |
| ; CHECK-NEXT: } |
| ; |
| entry: |
| br label %bb.2 |
| |
| bb.1: |
| br label %bb.2 |
| |
| bb.2: |
| %rv = phi i32 [ 1, %entry ], [ 2, %bb.1 ] |
| ret i32 %rv |
| } |
| |
| define i32 @remove_dead_blocks_remaining_uses(i32 %a) { |
| ; CHECK-LABEL: @remove_dead_blocks_remaining_uses( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: ret i32 1 |
| ; CHECK-NEXT: } |
| ; |
| entry: |
| ret i32 1 |
| |
| bb.2: |
| ret i32 %res |
| |
| bb.1: |
| %res = add i32 %a, 10 |
| br label %bb.2 |
| } |
| |
| define i32 @remove_dead_blocks_remaining_uses2(i32 %a, i1 %cond) { |
| ; CHECK-LABEL: @remove_dead_blocks_remaining_uses2( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: ret i32 1 |
| ; CHECK: bb.2: |
| ; CHECK-NEXT: [[RES2:%.*]] = add i32 undef, 10 |
| ; CHECK-NEXT: [[RES3:%.*]] = mul i32 [[RES2]], undef |
| ; CHECK-NEXT: ret i32 [[RES3]] |
| ; CHECK: bb.3: |
| ; CHECK-NEXT: ret i32 undef |
| ; CHECK-NEXT: } |
| ; |
| entry: |
| ret i32 1 |
| |
| bb.2: |
| %res2 = add i32 %res, 10 |
| %res3 = mul i32 %res2, %res |
| ret i32 %res3 |
| |
| bb.3: |
| br label %bb.4 |
| |
| bb.4: |
| ret i32 %res |
| |
| bb.1: |
| %res = add i32 %a, 10 |
| br i1 %cond, label %bb.2, label %bb.3 |
| br label %bb.2 |
| } |