forked from OSchip/llvm-project
56 lines
1.9 KiB
LLVM
56 lines
1.9 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
|
|
; RUN: opt -passes=loop-bound-split -S < %s | FileCheck %s
|
|
|
|
; LoopBoundSplit pass should fail to split this test's loop because the split
|
|
; condition is false in first iteration of the loop.
|
|
|
|
define i16 @main(i16 %qqq) {
|
|
; CHECK-LABEL: @main(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
|
|
; CHECK: for.body:
|
|
; CHECK-NEXT: [[T0:%.*]] = phi i16 [ 0, [[ENTRY:%.*]] ], [ [[T8:%.*]], [[CONT19:%.*]] ]
|
|
; CHECK-NEXT: [[T1:%.*]] = shl nuw nsw i16 [[T0]], 1
|
|
; CHECK-NEXT: [[T2:%.*]] = add i16 [[T1]], [[QQQ:%.*]]
|
|
; CHECK-NEXT: [[DOTNOT9:%.*]] = icmp ult i16 [[T2]], [[QQQ]]
|
|
; CHECK-NEXT: br i1 [[DOTNOT9]], label [[HANDLER_POINTER_OVERFLOW:%.*]], label [[CONT15_CRITEDGE:%.*]]
|
|
; CHECK: handler.pointer_overflow:
|
|
; CHECK-NEXT: call void @__ubsan_handle_pointer_overflow()
|
|
; CHECK-NEXT: br label [[CONT19]]
|
|
; CHECK: cont15.critedge:
|
|
; CHECK-NEXT: br label [[CONT19]]
|
|
; CHECK: cont19:
|
|
; CHECK-NEXT: [[T8]] = add nuw nsw i16 [[T0]], 1
|
|
; CHECK-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i16 [[T8]], 3
|
|
; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[FOR_COND_CLEANUP:%.*]], label [[FOR_BODY]]
|
|
; CHECK: for.cond.cleanup:
|
|
; CHECK-NEXT: ret i16 0
|
|
;
|
|
entry:
|
|
br label %for.body
|
|
|
|
for.body:
|
|
%t0 = phi i16 [ 0, %entry ], [ %t8, %cont19 ]
|
|
%t1 = shl nuw nsw i16 %t0, 1
|
|
%t2 = add i16 %t1, %qqq
|
|
%.not9 = icmp ult i16 %t2, %qqq
|
|
br i1 %.not9, label %handler.pointer_overflow, label %cont15.critedge
|
|
|
|
handler.pointer_overflow:
|
|
call void @__ubsan_handle_pointer_overflow()
|
|
br label %cont19
|
|
|
|
cont15.critedge:
|
|
br label %cont19
|
|
|
|
cont19:
|
|
%t8 = add nuw nsw i16 %t0, 1
|
|
%exitcond.not = icmp eq i16 %t8, 3
|
|
br i1 %exitcond.not, label %for.cond.cleanup, label %for.body
|
|
|
|
for.cond.cleanup:
|
|
ret i16 0
|
|
}
|
|
|
|
declare dso_local void @__ubsan_handle_pointer_overflow()
|