test/Transforms/LowerWidenableCondition/basic.ll

   1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
   2 ; RUN: opt -S -lower-widenable-condition < %s        | FileCheck %s
   3 ; RUN: opt -S -passes=lower-widenable-condition < %s | FileCheck %s
   4
   5 ; Basic test case: make sure that all widenable conditions turn into i1 true.
   6 define void @f_0(i1 %cond_0, i1 %cond_1) {
   7 ; CHECK-LABEL: @f_0(
   8 ; CHECK-NEXT:  entry:
   9 ; CHECK-NEXT:    [[EXIPLICIT_GUARD_COND:%.*]] = and i1 [[COND_0:%.*]], true
  10 ; CHECK-NEXT:    br i1 [[EXIPLICIT_GUARD_COND]], label [[GUARDED:%.*]], label [[DEOPT:%.*]]
  11 ; CHECK:       deopt:
  12 ; CHECK-NEXT:    unreachable
  13 ; CHECK:       guarded:
  14 ; CHECK-NEXT:    [[EXIPLICIT_GUARD_COND4:%.*]] = and i1 [[COND_1:%.*]], true
  15 ; CHECK-NEXT:    br i1 [[EXIPLICIT_GUARD_COND4]], label [[GUARDED1:%.*]], label [[DEOPT2:%.*]]
  16 ; CHECK:       deopt2:
  17 ; CHECK-NEXT:    unreachable
  18 ; CHECK:       guarded1:
  19 ; CHECK-NEXT:    ret void
  20 ;
  21 entry:
  22   %widenable_cond = call i1 @llvm.experimental.widenable.condition()
  23   %exiplicit_guard_cond = and i1 %cond_0, %widenable_cond
  24   br i1 %exiplicit_guard_cond, label %guarded, label %deopt
  25
  26 deopt:                                            ; preds = %entry
  27   unreachable
  28
  29 guarded:                                          ; preds = %entry
  30   %widenable_cond3 = call i1 @llvm.experimental.widenable.condition()
  31   %exiplicit_guard_cond4 = and i1 %cond_1, %widenable_cond3
  32   br i1 %exiplicit_guard_cond4, label %guarded1, label %deopt2
  33
  34 deopt2:                                           ; preds = %guarded
  35   unreachable
  36
  37 guarded1:                                         ; preds = %guarded
  38   ret void
  39 }
  40
  41 ; Function Attrs: inaccessiblememonly nounwind
  42 declare i1 @llvm.experimental.widenable.condition() #0
  43
  44 attributes #0 = { inaccessiblememonly nounwind }