Home | History | Annotate | Download | only in LoopStrengthReduce
      1 ; RUN: opt -S -loop-reduce < %s | FileCheck %s
      2 target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
      3 target triple = "x86_64-pc-windows-msvc19.0.24215"
      4 
      5 define void @fn3() personality i32 (...)* @__CxxFrameHandler3 {
      6 entry:
      7   %call = invoke i32 @fn2()
      8           to label %for.cond.preheader unwind label %catch.dispatch2
      9 
     10 for.cond.preheader:                               ; preds = %entry
     11   br label %for.cond
     12 
     13 for.cond:                                         ; preds = %for.cond.preheader, %for.cond
     14   %b.0 = phi i32 [ %inc, %for.cond ], [ %call, %for.cond.preheader ]
     15   %inc = add nsw i32 %b.0, 1
     16   invoke void @fn1(i32 %inc)
     17           to label %for.cond unwind label %catch.dispatch
     18 
     19 ; CHECK:   %[[add:.*]] = add i32 %call, 1
     20 ; CHECK:   br label %for.cond
     21 
     22 ; CHECK: for.cond:                                         ; preds = %for.cond, %for.cond.preheader
     23 ; CHECK:   %[[lsr_iv:.*]] = phi i32 [ %lsr.iv.next, %for.cond ], [ %[[add]], %for.cond.preheader ]
     24 ; CHECK:   %[[lsr_iv_next:.*]] = add i32 %lsr.iv, 1
     25 ; CHECK:   invoke void @fn1(i32 %[[lsr_iv]])
     26 
     27 
     28 catch.dispatch:                                   ; preds = %for.cond
     29   %0 = catchswitch within none [label %catch] unwind label %catch.dispatch2
     30 
     31 catch:                                            ; preds = %catch.dispatch
     32   %1 = catchpad within %0 [i8* null, i32 64, i8* null]
     33   invoke void @_CxxThrowException(i8* null, i8* null) #2 [ "funclet"(token %1) ]
     34           to label %unreachable unwind label %catch.dispatch2
     35 
     36 catch.dispatch2:                                  ; preds = %catch.dispatch, %catch, %entry
     37   %a.0 = phi i32 [ undef, %entry ], [ %call, %catch ], [ %call, %catch.dispatch ]
     38   %2 = catchswitch within none [label %catch3] unwind to caller
     39 
     40 catch3:                                           ; preds = %catch.dispatch2
     41   %3 = catchpad within %2 [i8* null, i32 64, i8* null]
     42   call void @fn1(i32 %a.0) [ "funclet"(token %3) ]
     43   catchret from %3 to label %try.cont4
     44 
     45 try.cont4:                                        ; preds = %catch3
     46   ret void
     47 
     48 unreachable:                                      ; preds = %catch
     49   unreachable
     50 }
     51 
     52 declare i32 @fn2()
     53 
     54 declare i32 @__CxxFrameHandler3(...)
     55 
     56 declare void @fn1(i32)
     57 
     58 declare void @_CxxThrowException(i8*, i8*)
     59